Reassessment of the extinction risk status of the ponytail palm Beaucarnea inermis / Reevaluación del riesgo de extinción de la pata de elefante Beaucarnea inermis

Abstract Beaucarnea inermis is an endemic species from Northeast Mexico, in the states of San Luis Potosí and Tamaulipas. It is appreciated as an ornamental plant, so its populations are subject to the poaching of individuals for illegal trade. Previous studies determined that their populations have been affected due to the disturbance since the incidence of anthropogenic activities affects the viability of the species. Here we determine the current conservation status of B. inermis and identify their main risk factor by performing an extinction risk assessment based on the Annex II "Method for Evaluation of Risk of Extinction of Plants in Mexico". We studied 10 populations of B. inermis from protected and non-protected areas in San Luis Potosí and Tamaulipas. We considered the MER criteria: A) geographical distribution characteristics, B) habitat characteristics, C) intrinsic biological vulnerability, and D) impact of human activity. Using field and analyzed data, the MER assessment gives 1.91 points that confirm B. inermis is correctly classified as an Endangered species. The natural protected areas where the species occurs represent cores for its protection; however, the surface of these areas may not be sufficient without biological corridors that connect them.

Resumen Beaucarnea inermis es una especie endémica del Noroeste de México distribuida en los estados de San Luis Potosí y Tamaulipas. Es apreciada como planta ornamental, por lo que sus poblaciones están sujetas al saqueo de individuos para su comercialización ilegal. En trabajos anteriores se determinó que sus poblaciones han sido afectadas debido al disturbio por la incidencia de actividades antrópicas que afectan su viabilidad. En la presente contribución se determina el nivel de riesgo de B. inermis con base en el Anexo Normativo II "Método de Evaluación de Riesgo de Extinción de Plantas en México". Se estudiaron 10 poblaciones de B. inermis en San Luis Potosí y Tamaulipas, tanto en áreas naturales protegidas como en sitios no protegidos. Los criterios MER considerados fueron: A) características de la distribución geográfica, B) características del hábitat, C) vulnerabilidad biológica intrínseca y D) impacto de la actividad humana. El análisis MER arroja un valor de 1.91 que, confirma a B. inermis dentro de la categoría de Amenazada. Las áreas naturales protegidas donde se distribuye la especie funcionan como núcleos de protección, sin embargo, su superficie puede no ser suficiente sin la presencia de corredores biológicos que las conecten.

Estrategias de afrontamiento ante la crisis sanitaria: un estudio comparativo en enfermeros de costa y sierra ecuatoriana / Coping strategies in the face of the health crisis: A comparative study in nurses from the Ecuadorian coast and highlands

Se realizó una encuesta transversal de dos muestras separadas por conveniencia de enero a marzo de 2021 a fin de comparar la prevalencia de percepción de riesgo e identificar diferentes estrategias de afrontamiento en enfermeros de la costa y la sierra ecuatoriana. Las muestras incluyeron dos grupos de profesionales de enfermería para un total de 518. El 49,0% (n= 254) de los participantes laboraban en la sierra ecuatoriana y el 50,8% (n= 263) prestaban sus servicios en la costa ecuatoriana. Muestreados provenientes de varias clínicas, tanto en la costa como en la sierra ecuatoriana, fueron abordados aleatoriamente por el entrevistador para participar en el estudio. Se examinaron y compararon los resultados de las pruebas de las tres muestras. Los grupos se eligieron en función de la conveniencia del muestreo y la supuesta conciencia de los factores de riesgo de COVID-19. En cuanto a la percepción de riesgo, su prevalencia es significativamente mayor para las enfermeras de la costa que las de la sierra. Las enfermeras que prefieren trabajar en equipo durante la crisis sanitaria tenían probabilidades alrededor de 0,30 más bajas, lo que puede interpretarse como un factor protector. Respecto al miedo al contagio no se hallaron diferencias entre enfermeras de la costa o la sierra(AU)

A cross-sectional survey of two samples separated by convenience was carried out from January to March 2021 to compare the prevalence of risk perception and identify different coping strategies in nurses from the Ecuadorian coast and highlands. The samples included two groups of nursing professionals for a total of 518. 49.0% (n= 254) of the participants worked in the Ecuadorian highlands and 50.8% (n= 263) provided their services on the ecuadorian coast. Samples from various clinics, both on the coast and in the Ecuadorian highlands, were randomly approached by the interviewer to participate in the study. The test results of the three samples were examined and compared. Groups were chosen based on sampling convenience and presumed awareness of COVID-19 risk factors. Regarding the perception of risk, its prevalence is significantly higher for nurses from the coast than those from the mountains. Nurses who prefer to work in a team during the health crisis had probabilities around 0.30 lower, which can be interpreted as a protective factor. Regarding the fear of contagion, no differences were found between nurses from the coast or the mountains(AU)

Assessment of knowledge, attitude and practice on family planning among women of reproductive age at hospitals and clinic centers in the rural Western Sierra Leone

Informed decisions about one's sexual and reproductive health can be made through family planning. Women of reproductive age in rural Sierra Leone's Western area were asked to participate in a survey to determine their attitudes and knowledge toward family planning and the use of contraceptives. A descriptive cross-sectional study survey was conducted in the Western Area Rural of Sierra Leone. Females in the range of 15 to 49 years old were included in the study. The research was conducted from November 2021 to December 2021. Using a pre-designed and pretested questionnaire, 180 women were assessed for their knowledge, attitudes, and practices regarding family planning. According to the study, all participants knew about family planning, but only 68.3% had used contraceptives. There were more than half who learned about it from the media. The study found that 95% of participants had a positive attitude towards contraceptives. Most commonly, contraceptives used were oral pills (31.6), injections (21.1%), implants (19.1%), lactational amenorrhea (13.8%), condoms (8.8%), and intrauterine devices (5%). In our study, the most common reasons given by participants for not using contraceptives were; not willing to disclose 52.6%, a desire for a child 19.2%, fear of side effects 15.7%, currently pregnant 8.7%, and against religious beliefs 3.5%. The study shows that even if people are aware and educated about contraceptives, they may not use them. Educating and motivating people and improving access to family planning services are still necessary to improve the effectiveness and appropriateness of contraceptive use and halt the population growth trend. (Afr J Reprod Health 2022; 26 [6]:15-21).

Factores de riesgo en población rural andina con COVID-19: un estudio de cohorte retrospectivo / Risk factors in rural Andean population with COVID-19: a retrospective cohort study

Resumen Objetivo: Determinar los factores de riesgo en adultos con COVID-19 en población rural andina durante 2020. Métodos: En este estudio de cohorte retrospectivo multicéntrico, incluimos a 184 pacientes adultos (≥18 años) con pruebas serológicas y moleculares para CO VID-19 de tres hospitales de la sierra peruana (Ancash y Apurímac) incluidos con sospecha clínica entre abril y junio. Se utilizó análisis descriptivos y regresión logística univariable para explorar los factores de riesgo asociados a los pacientes con COVID-19. Resultados: Del total de pacientes, 14 (7.6%) tuvieron SARS-CoV-2. En los pacientes infectados 12 (85.7%) fueron varones con promedio de edad de 47.3±21 años. Las comorbilidades estuvieron presentes en cerca de la tercera parte de pacientes, siendo la hipertensión y diabetes las más frecuentes (ambas 14.3%), y la sinto matología más frecuentes fueron fiebre y cefalea (57.2%). La regresión univariable mostró mayores probabilidades de infección con SARS-CoV-2 en la población rural andina asociada con la edad avanzada (OR: 1.1 IC95% 0.7-1.8; p=0,019), comorbilidades previas (OR: 1.7, IC95% 0.32-9.39; p=0,006), y sintomatología previa (OR: 49.8, IC95% 5.6-436.9; p=0,0011). Conclusiones: Los posibles factores de riesgo como la edad avanzada, las comorbilidades y sintomatología previas están relacionados con el desarrollo de CO VID-19 en población rural andina de Perú.

Abstract Objective: To determine the risk factors in adults with COVID-19 in the rural Andean population during 2020. Methods: This multicenter retrospective cohort study included 184 adult patients (≥18 years) with COVID-19's serological and molecular tests from three Hospitals in the Peruvian mountains (Ancash and Apurímac) included with clinical suspicion between April and June. Descriptive analysis and univariate logistic regression were used to explore the risk factors associated with patients with COVID-19. Results: Of total of patients, 14 (7.6%) had a SARS-CoV-2. In infected patients 12 (85.7%) were men with an average age of 47.3±21 years. Comorbidities were present in about a third of patients, with hypertension and diabetes being the most frequent (both 14.3%), and the most frequent symptoms were fever and hea dache (57.2%). Univariate regression showed higher probabilities of infection with SARS-CoV-2 in the rural Andean population associated with advanced age (OR: 1.1 95% CI 0.7 - 1.8; p = 0.019), previous comorbidities (OR: 1.7, 95%CI 0.32 - 9.39; p = 0.006), and previous symptoms (OR: 49.8, 95%CI 5.6 - 436.9; p = 0.0011). Conclusions: Possible risk factors such as advanced age, comorbidities and previous symptoms are related to the development of COVID-19 in the rural Andean population of Peru.

Fauna silvestre con valor de uso en la Reserva de la Biosfera Sierra de Huautla, Morelos, México / Wild fauna with use value in the Biosphere Reserve Sierra de Huautla, Morelos, Mexico

Resumen El objetivo de este trabajo fue sistematizar las especies apropiadas, formas de apropiación y valores de uso asignados a la fauna silvestre en comunidades de la Reserva de la Biosfera Sierra de Huautla, México, mediante un análisis documental y trabajo de campo. Se registraron 46 especies con valor de uso pertenecientes a 31 familias. La clase con mayor número de especies apropiadas son las aves (42.5%), seguidas de los mamíferos (34%). El 64% de las especies se apropian con fines alimentarios y el 38.3% se utilizan para el tratamiento de enfermedades en la medicina tradicional. Otros usos son adornos, amuletos, elaboración de herramientas y como animal de compañía. La apropiación de fauna silvestre se realiza por medio de la cacería, la recolección y la pesca. Las armas de fuego como la escopeta es el principal instrumento para la cacería. También se utilizan perros, machetes, resorteras, tarrayas, anzuelos, nudos corredizos y se capturan manualmente. La apropiación puede ser una actividad oportunista u organizada por medio de las arreadas, espiadas, lampareadas, campeadas, acorralamiento y recolección manual. La apropiación de fauna silvestre es una actividad culturalmente arraigada en las comunidades de la reserva. Sin embargo, el análisis de la relación sociedad-fauna en la región es limitado, por lo que es necesario generar información que promueva el manejo sostenible del recurso faunístico.

Abstract The aims of this paper were the systematization of appropriated species, appropriation forms and assigned use values of wildlife species in the Biosphere Reserve of the Sierra de Huautla, Mexico, by means of documentary analysis and field work. We recorded 46 species with use value pertaining to 31 families. Birds accounted for the highest number of appropriated species (42.5%), followed by mammals (34%). Of the total species, 64% are appropriated for alimentary purposes and are used in the treatment of diseases in traditional medicine. Others are used as ornaments, talismans, in tool manufacture and as pet animals. Wildlife appropriation is achieved by hunting, collection and fishing. Fire arms such as shotguns are the main instrument used in hunting. Dogs, machetes, slingshots, nets, hooks, slipknots, are also used, or they are captured by hand. Appropriation can be an opportunistic or organized activity by means of "arreadas" (herding), "espiadas" (opportunistic observation), "lampareadas" (spotlighting), "campeadas" (scouring), "acorralamiento" (cornering) and manual collection. Wildlife appropriation is a culturally rooted activity in the reserve communities. Nevertheless, the analysis of the relationship society-fauna in the region is limited and this is why the generation of information that may enable a sustainable management of the faunistic resource is necessary.

Floristic composition and potential invasiveness of alien herbaceous plants in Western Mexico / Composición florística y potencial de invasión de plantas herbáceas exóticas en el occidente de México

Abstract Introduction: Numbers of alien plant species are rising around the globe, but not all of them become invasive. Whereas introductions have been documented for several decades in some regions of the world, knowledge on alien species in Western Mexico is limited. Here, we study roadside vegetation along an elevational gradient, which includes a protected area. Objective: We analysed the floristic composition of herbaceous alien species, their distribution patterns, and their relationship with various environmental factors. A relative importance value index (IVI) identified the most important and, therefore, probably invasive taxa. Methods: During 2017 and 2018, roadside vegetation was documented with 4-6 transects every 300 altitudinal meters, from 0 to 2 100 m, for a total of 37 transects. Each transect consisted of five 1 m² plots. All herbaceous species were registered and alien taxa identified. A cluster analysis distinguished grouping of species based on elevation. The potentially invasive species were identified by their IVI, based on the sum of relative frequency and density values. The influence of environmental variables was analysed with a canonical correspondence analysis. Results: Most alien species were grasses; other families were represented by one or two species. The species were grouped into three main clusters. The first group included rare species, the second consisted of species restricted to higher altitudes, and the third group were tropical taxa with a distribution from sea level to medium altitudes. The most important potentially invasive species were: Urochloa maxima, Melinis repens, Eragrostis ciliaris and Cynodon dactylon, all African grasses introduced for grazing. The IVI of the species was related to tree cover, leaf litter depth and surface stone cover for some species and, for others, to soil compaction, distance to major roads and elevation. Conclusions: The alien ruderal species clustered according to the general climate (temperate vs. tropical). Grasses of African origin are of highest concern as invasive species. Although most introductions are related to human disturbance, each species becomes dominant under certain environmental conditions. Thus, management programs must be specifically adjusted to each individual invasive alien.

Resumen Introducción: El número de especies de plantas exóticas está aumentando en todo el mundo, pero no todas las especies se convierten en invasoras. Si bien para algunas regiones la introducción de especies se ha documentado durante varias décadas, para el occidente de México los conocimientos sobre especies exóticas son escasos. Aquí, estudiamos la vegetación de los bordes de las carreteras a lo largo de un gradiente altitudinal en una región que incluye un área protegida. Objetivos: Estudiamos la composición florística de las herbáceas exóticas, sus patrones de distribución y su relación con diversos factores ambientales. El índice de valor de importancia (IVI) de las especies identificó las especies más importantes, y por lo tanto probablemente invasoras. Métodos: Durante el 2017 y 2018 se documentó la vegetación del borde de la carretera con 4-6 transectos en cada nivel de elevación de 300 m, de 0 a 2 100 m, para un total de 37. Cada transecto constó de cinco parcelas de 1 m². Se registraron todas las especies herbáceas y se identificaron las especies introducidas. Un análisis de agrupamiento identificó los grupos de especies basado en sus patrones de distribución relacionadas con la elevación. Las especies potencialmente invasoras se identificaron por su IVI, basado en la suma de la frecuencia relativa y la densidad relativa. La influencia de las variables ambientales fue estudiada mediante un análisis de correspondencia canónica. Resultados: La mayoría de las especies exóticas fueron pastos, otras familias estuvieron representadas por una o dos especies. Las especies formaron tres grupos principales. El primero incluyó especies raras; el segundo las especies distribuidas principalmente en elevaciones altas, y el tercero incluyó los taxones con una distribución desde el nivel del mar hasta elevaciones medias. Las especies más importantes y potencialmente invasoras fueron: Urochloa maxima, Melinis repens, Eragrostis ciliaris y Cynodon dactylon, todas gramíneas africanas introducidas como forraje para el ganado. El IVI de las especies se relacionó con la cobertura de árboles, profundidad de hojarasca y con pedregosidad para algunas especies, y para otras con la compactación del suelo, la distancia a carreteras (federales) y elevación. Conclusiones: Las especies ruderales exóticas se agruparon según el clima general (templado vs. tropical). Las gramíneas de origen africano son las que más preocupan como especies invasoras. Aunque la mayoría de las introducciones están relacionadas con las alteraciones humanas, cada especie se vuelve dominante en determinadas condiciones ambientales. Por ello, los programas de manejo deben ajustarse específicamente a cada especie exótica invasora.

Instrumental piezoeléctrico comparado con sierra convencional en cirugía ortognática / Piezoelectric bone surgery compared to conventional saw in orthognathic surgery

RESUMEN: Introducción: La utilización de instrumental piezoeléctrico en cirugía ortognática ha ido en aumento con el fin de minimizar el riesgo de daño a tejidos blandos en comparación al uso de sierra convencional. Sin embargo, aún existe incertidumbre respecto a las complicaciones asociadas a cada instrumental. Métodos: Realizamos una búsqueda en Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante el cribado de múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, analizamos los datos de los estudios primarios, realizamos un meta análisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. Resultados y conclusiones: Identificamos cuatro revisiones sistemáticas que en conjunto incluyeron 10 estudios primarios, de los cuales, cuatro corresponden a ensayos aleatorizados. Concluimos que el uso de instrumental piezoeléctrico en comparación con la sierra convencional podría disminuir el riesgo de daño nervioso grave y disminuir el sangrado grave (>500 mL), pero la certeza de la evidencia es baja. Por otra parte, el uso de instrumental piezoeléctrico podría presentar poca o nula diferencia en el dolor postoperatorio, pero la certeza de la evidencia es baja. Finalmente no es posible establecer con claridad si el uso de instrumental piezoeléctrico disminuye la pérdida de sangre intraoperatoria (variable continua), la inflamación postoperatoria o el tiempo operatorio, ya que la certeza de la evidencia existente ha sido evaluada como muy baja.

ABSTRACT: Introduction: The use of piezoelectric bone surgery in orthognathic surgery has been increasing to minimize the risk of soft tissue damage compared to conventional saws. However, there is still uncertainty regarding the complications associated with each instrument. Methods: We searched in Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed primary studies' data, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. Results and conclusions: We identified four systematic reviews that included 10 primary studies, four of which corresponded to randomized trials. We conclude that the use of piezoelectric instrumentation compared to the conventional saw may reduce the risk of severe nerve damage and decrease severe bleeding (>500 mL), but the certainty of the evidence is low. On the other hand, the use of piezoelectric bone surgery may make little or no difference in postoperative pain, but the certainty of the evidence is low. Finally, we are uncertain whether piezoelectric bone surgery reduces intraoperative blood loss (continuous variable), postoperative inflammation, and operative time, as the certainty of the evidence has been assessed as very low.

Feeding habits of the fishes Euthynnus lineatus and Scomberomorus sierra (Perciformes: Scombridae) in the Eastern Tropical Pacific / Hábitos alimentarios de los peces Euthynnus lineatus y Scomberomorus sierra (Perciformes: Scombridae) en el Pacífico Tropical Oriental

Introduction: Black skipjack, Euthynnus lineatus, and Pacific sierra, Scomberomorus sierra, are of great economic importance in the small-scale fishery of the Tropical Eastern Pacific and in particular in the study area. Objectives: The objectives of the present study were to assess the diet components of E. lineatus and S. sierra, as well as to evaluate the niche width, trophic level, and trophic overlap between the two species, by size and season. Methods: Biological samples were obtained weekly from small-scale fishery catches in Bahía de Acapulco, Mexico. The E. lineatus sampling period occurred from October 2016 to October 2017, whereas S. sierra was sampled from October 2016 to June 2018. The Prey-specific Index of Relative Importance (% PSIRI) was used to evaluate the importance of each prey item in the diet of the predator. Levin´s index (Bi) was used as a measure of niche width. The Morisita-Horn index was used to evaluate diet overlap by size (juveniles or adults), by season (dry or wet), and between the two species. The trophic level (TL) of predators was calculated using the Cortés´ method. Results: A total of 262 E. lineatus stomachs were analyzed (42 % were empty and 58 % contained food) and a total of 209 S. sierra stomachs were analyzed (74.6 % were empty and 25.3 % contained food). Of the total E. lineatus specimens sampled, 107 were juveniles and 155 were adults. Black skipjack juveniles fed on five food items and adults fed on 13 food items. Of the total S. sierra specimens sampled, 75 were juveniles and 134 were adults. Pacific sierra juveniles and adults fed on five food items. The diet of the two species comprised fish, mollusks, and crustaceans. The two species showed narrow niche width. The diet of juvenile and adult E. lineatus presented differences with growth, contrary to what was observed for juveniles and adults of S. sierra. There were no significant differences in diet by season for both species. The trophic overlap obtained between the two species was low. The trophic level calculated for both species indicated that are tertiary consumers. Conclusions: Black skipjack and Pacific sierra are tertiary predators and present a specialist behavior, feeding mainly on fish from the families Engraulidae and Clupeidae. Although a degree of similarity in the dietary food components of these species was observed, there was not a high degree of interspecific competition for food.

Introducción: El barrilete negro, Euthynnus lineatus, y la sierra del Pacífico, Scomberomorus sierra, son peces que presentan gran importancia económica en la pesca artesanal del Pacífico Tropical Oriental y de manera particular en el área de estudio. Objetivos: Los objetivos del presente trabajo son determinar los componentes alimentarios de la dieta de E. lineatus y S. sierra, así como determinar la amplitud del nicho, el nivel trófico y el traslape trófico entre ambas especies, por tallas y por temporada climática. Métodos: Las muestras biológicas se obtuvieron semanalmente de las capturas realizadas por las pesquerías de pequeña escala llevadas a cabo en la Bahía de Acapulco. El periodo de muestreo de E. lineatus se realizó desde octubre 2016 hasta octubre 2017, mientras que el de S. sierra de octubre 2016 hasta junio 2018. El Índice de Importancia Relativa Específica de la Presa (% PSIRI) se usó para evaluar la importancia de cada ítem presa en la dieta del depredador; el índice de Levin (Bi) se usó como una medida de la amplitud del nicho; el índice de Morisita-Horn se usó para evaluar el traslape entre las dietas por talla (juveniles y adultos), por temporada climática (seca y lluviosa) y entre las dos especies. El nivel trófico (TL) de los depredadores fue calculado usando el método de Cortés. Resultados: Se analizaron en total 262 estómagos de E. lineatus (42 % vacíos y 58 % con alimento) y 209 estómagos de S. sierra (74.6 % vacíos y 25.3 % con alimento). Del total de organismos muestreados de E. lineatus, 107 se consideraron organismos jóvenes y 155 adultos. Los jóvenes de barrilete se alimentaron de 5 ítems alimentarios y los adultos se alimentaron de 13. En el caso de S. sierra, 75 organismos se consideraron jóvenes y 134 adultos. Los jóvenes y adultos de sierra se alimentaron de cinco ítems alimentarios. La dieta de ambas especies se compone por peces, moluscos y crustáceos. Las dos especies presentaron una amplitud del nicho trófico estrecho. La dieta de jóvenes y adultos de E. lineatus presentó diferencias alimentarias de acuerdo con su crecimiento, contrario a lo observado entre jóvenes y adultos de S. sierra. Entre temporadas climáticas, la dieta no presentó variaciones significativas en ambas especies. Asimismo, el valor de traslape trófico obtenido entre ambas especies fue bajo. El nivel trófico determinado para ambas especies indicó que son consumidores terciarios. Conclusiones: El barrilete negro Euthynnus lineatus y la sierra del Pacifico Scomberomorus sierra son depredadores terciarios y presentan un comportamiento especialista, principalmente sobre peces de las familias Engraulidae y Clupeidae. Aunque se observó una similitud en los componentes alimentarios de estas especies, no existe un alto grado de competencia interespecífica por el alimento.

Conocimiento etnobotánico sobre el uso de plantas medicinales en la Sierra Negra de Puebla, México / Ethnobotanical knowledge on the use of medicinal plants in the Sierra Negra de Puebla, Mexico

Medicinal plants are very useful for man and is the result of the experience that has accumulated for generations. The aim of the study was to obtain information on the use of medicinal plants used in indigenous communities of the Sierra Negra de Puebla, Mexico. A semi-structured interview was applied to 635 people; 79.5% women and 20.5% men. The use of 43 species divided into 21 families was reported. The most used families were Asteraceae (8 spp.), Lamiaceae (4 spp.) And Rutaceae (4 spp.), The species with higher frequency and use value were Matricaria recutita and Mentha piperita, the main affections treated were; stomach pain, cough and flu. The leaves were the most used (55%) the main form of preparation (30.2%) was maceration, most (65%) grow the plants in orchards. In indigenous communities, women have a preponderant role in the use of medicinal plants.

Las plantas medicinales son de gran utilidad para el hombre y es resultado de la experiencia que ha acumulado por generaciones. El objetivo del estudio fue obtener información sobre el uso de las plantas medicinales utilizadas en comunidades indígenas de la Sierra Negra de Puebla, México. Se aplicó una entrevista semiestructurada a 635 personas; 79.5% mujeres y 20.5% hombres. Se reportó el uso de 43 especies divididas en 21 familias. Las familias más utilizadas fueron Asteraceae (8 spp.), Lamiaceae (4 spp.) y Rutaceae (4 spp.), las especies con mayor frecuencia y valor de uso fueron Matricaria recutita y Mentha piperita, las principales afecciones tratadas fueron; dolor estomacal, tos y gripa. Las hojas fueron la parte más utilizada (55%) la principal forma de preparación (30.2%) fue maceración, la mayoría (65%) cultiva las plantas en huertos. En comunidades indígenas la mujer tiene un papel preponderante en el uso de las plantas medicinales.

A century of onchocerciasis in Sierra Leone

In 1926, Blacklock first described onchocerciasis (OV) transmission by black fly, Simulium damnosum in Sierra Leone. In the 1950-1960's, high OV prevalence was demonstrated along the rivers and the existence of black flies nationwide except around the capital and the coastal plain of Bonthe. In 1957, control efforts started with insecticides along the river breeding sites. In 1974, the Onchocerciasis Control Programme focusing on vector control was launched, extending to Sierra Leone in the 1980s. From 1995, the African Programme for Onchocerciasis Control commenced community-directed treatment with ivermectin (CDTI) in hyper- [microfilaridermia (mf) prevalence≥40%] and meso- (nodule prevalence 20%-39%) sites. To be effective programme, coverage among the eligible population over five years of age needed be at least 80%. In the mid-1990s, the rebel war stopped vector control and effective CDTI was not established until 2006. Baseline data using skin snips from 39 sentinel villages found the average OV mf prevalence was 53.1% (28.9 mf/snip). From October 2008, albendazole was added in phases to CDTI for all communities in all 14 districts for lymphatic filariasis (LF) elimination. In 2010, after five rounds of effective MDA, OV mf prevalence was 21.1% (8.29 mf/snip). Males had higher prevalence and density than females in both studies. Since then, OV control (acknowledging transmission continues) has transitioned to OV elimination assuming transmission can be interrupted once mf prevalence is less than 5%. In 2017, a rapid assessment was integrated into LF-Transmission Assessment Survey and independently in 8 and 4 districts respectively, designed by the Survey Sample Builder. Children aged 5-9 years were randomly selected from 177 clusters and tested by OV-16 (Rapid Diagnostic Tests, SD BIOLINE) using finger-prick blood samples. Overall, 17 441 children participated and 347 (2.0%) were positive (M: 2.4% versus F: 1.6%) (P10%). The LF- Transmission Assessment Survey sampling methodology does not take cognizance of black fly breeding sites, but did demonstrate ongoing transmission and another 4-5 rounds were advisable. A technical advisory committee has been established with representation from international experts to help plan for accreditation of onchocerciasis elimination around 2025.

Next-generation Sequencing Study of Pathogens in Serum from Patients with Febrile Jaundice in Sierra Leone / 生物医学与环境科学（英文）

OBJECTIVE@#People in Western Africa suffer greatly from febrile jaundice, which is caused by a variety of pathogens. However, yellow fever virus (YFV) is the only pathogen under surveillance in Sierra Leone owing to the undeveloped medical and public health system there. Most of the results of YFV identification are negative. Elucidation of the pathogen spectrum is required to reduce the prevalence of febrile jaundice.@*METHODS@#In the present study, we used Ion Torrent semiconductor sequencing to profile the pathogen spectrum in archived YFV-negative sera from 96 patients in Sierra Leone who presented with unexplained febrile jaundice.@*RESULTS@#The most frequently identified sequencing reads belonged to the following pathogens: cytomegalovirus (89.58%), Epstein-Barr virus (55.21%), hepatitis C virus (34.38%), rhinovirus (28.13%), hepatitis A virus (20.83%), coxsackievirus (10.42%), Ebola virus (8.33%), hepatitis E virus (8.33%), lyssavirus (4.17%), leptospirosis (4.17%), chikungunya virus (2.08%), Crimean-Congo hemorrhagic fever virus (1.04%), and hepatitis B virus (1.04%).@*CONCLUSION@#The distribution of sequencing reads suggests a broader spectrum of pathogens for consideration in clinical diagnostics and epidemiological surveillance in Sierra Leone.

Depredación del borrego Ovis canadensis (Artiodactila: Bovidae) y el venado bura Odocoileus hemionus (Artiodactila: Cervidae) por Puma concolor (Carnivora: Felidae) en Coahuila, México / Predation of bighorn sheep, Ovis canadensis (Artiodactila: Bovidae) and mule deer, Odocoileus hemionus (Artiodactila: Cervidae) by Puma concolor (Carnivora: Felidae) in Coahuila, México

Resumen Pequeñas y aisladas poblaciones de borrego cimarrón (Ovis canadensis; especie sujeta a protección especial) son susceptibles a la depredación en hábitat simpátrico con venado bura. Entender las causas específicas de muerte y supervivencia es importante para el desarrollo de estrategias de conservación para el borrego cimarrón y otros ungulados que comparten el mismo hábitat, tal como el venado bura (Odocoileus hemionus). El objetivo de este estudio fue evaluar la tasa de depredación por puma (Puma concolor) en el borrego cimarrón y compararla con la del venado bura, para conocer la selección de presa del puma entre estas dos especies en un mismo hábitat, así como el impacto que podría tener en las poblaciones. Se plantea la hipótesis de que el puma como depredador oportunista no discrimina entre especies de ungulados simpátricos generando mayor impacto a la especie de menor densidad. Evaluamos la tasa de depredación por puma en 12 borregos cimarrones (10 hembras, 2 machos) y de 10 hembras adultas de venado bura con radio collares a través de micromorts y se comparó por medio una prueba de Wilcoxon, más la estimación de densidades de borrego y venados. Encontramos resultados similares en la causa específica de muerte por puma y supervivencia en ambas especies; 88 % (8/9) muertes debido a depredación por puma en borrego cimarrón con una tasa de supervivencia mensual promedio de 0.79 y una tasa mensual de depredación que va del rango 0.17-0.30. En venado bura la depredación debido a puma fue 83 % (5/6) con una tasa de supervivencia mensual promedio de 0.86 y una tasa de depredación por puma mensual en el rangos 0.10-0.25. Sin embargo, al comparar con la tasa de depredación por puma encontramos una diferencia significativa (Z = 1.826; df = 6; P = 0.05) siendo el borrego cimarrón la presa más selecta. En este estudio se concluye que el puma seleccionó a la presa de menor densidad (borrego cimarrón) y por ende la más impactada en un hábitat simpátrico con venado bura.(AU)

Abstract Small and isolated populations of bighorn sheep are vulnerable to predation by mountain lion in habitat sympatric with mule deer. Understanding the specific causes of death and survival is important for the development of conservation strategies for bighorn sheep and other ungulates that share the same habitat, such as mule deer. We evaluated and compared the rate of predation by puma in 12 bighorn sheep (10 females, two males) and 10 adult females of mule deer with radio collars through measure risk program (micromorts). The impact of predation in both populations of herbivores is evaluated through the estimation of densities of sheep and mule deer. 88 % (8/9) deaths by puma in bighorn sheep with an average monthly survival rate of 0.79 and predation rates due to puma range from 0.17 to 0.30. In mule deer predation due to puma was 83 % (5/6) with an average monthly survival rate of 0.86 and predation rates due to puma range from 0.10 to 0.25, however when comparing the mountain lion depredation rate we found a significant difference between species (Z = 1.826, df = 6, P = 0.05). The density in mule deer was 9x more that bighorn. The bighorn sheep being the prey most selected and the one most affected as the population with the lowest density.(AU)

Impactos por cambio de uso de suelo en las áreas naturales protegidas de la región central de la Sierra Madre Oriental, México / Impact of land use cover change on protected natural areas in central region of Sierra Madre Oriental, Mexico

Resumen Los cambios en el uso de suelo y la cubierta vegetal, derivados de la expansión y extensión de асtividades antrópicas, generan impactos negativos en la biodiversidad y la provisión de servicios ecosistémicos, y contribuyen significativamente en los procesos de cambio climatico a nivel regional. Las Áreas Naturales Protegidas (ANP) representan un instrumento de política pública para hacer frente a las tendencias de cambio y transformación de los ecosistemas, además de permitir la conservación de los recursos. El objetivo de este estudio fue determinar el impacto potencial del cambio en el uso de suelo y la cobertura vegetal de las ANP de la región сеntral de la Sierra Madre Orientai (SMO), en México, a través del análisis espacial y la simulación de escenarios de cambio potencial. Se usaron imágenes satelitales para elaborar mapas de cambio en coberturas vegetales, entre los años 1989, 2000 y 2005, y con base en un conjunto de variables biofísicas y socioeconómicas, se simuló un escenario de cambio al 2025. Se determinó que la tasa de cambio de las cubiertas vegetales de la SMO en el periodo estudiado fue de 0.54 % en selvas, 0.22 % en bosques y 0.23 % en matorrales; y en las ANP fue de 0.34 % y 0.60 % para selvas y bosques, respectivamente. En este lapso se perdieron 1 578.26 ha de selvas, bosques y matorrales, al interior de las ANP. De mantenerse las tendencias actuales de cambio en el uso de la tierra, otras 4 542.17 ha estarán en riesgo de perderse en un futuro cercano. Los resultados indican que las ANP estudiadas están sometidas a presiones de cambio en el uso de la tierra, que amenazan la conservación del patrimonio natural que resguardan, por 10 que deberían rediseñarse las estrategias de manejo y monito reo a corto y mediano plazo.

Abstract Land use cover change, resulting from the expansion and extension of human activities, generates negative impact on biodiversity and the provision of ecosystem services, as well as contributing significantly to climate change processes at a regional level. Natural Protected Areas (NPA) represent a public policy instrument to address the trends of change and ecosystem transformation, while allowing the conservation of resources. The objective of this study was to determine the potential impact of the processes involved in land use cover change on the NPA as part of the central region at the Sierra Madre Oriental (SMO) in Mexico by using the special analysis and the scenery simulation of potential change. Satellite imagery was used to determine the changes in natural vegetation cover between 1989, 2000 and 2005 and, using a set of biophysical and socioeconomic variables, a change scenario was simulated for 2025. This study found that the rate of change of vegetation cover at the SMO over the research period was 0.54 % in tropical forests, 0.22 % in forests and 0.23 % in scrublands, while those in NPA were 0.34 % and 0.60 % in tropical forests and forests respectively; 1 578.26 ha of tropical semi-deciduous temperate forest and scrublands were lost from the NPA. If the current land use trends change continues, another 4 542.17 ha are likely to be modified in the future. These results indicate that NPA under study are subject to the pressures of land use change that threaten the natural heritage under protection and that, therefore, management strategies and monitoring need to be redesigned in the short and medium term.

Normalización sin transición: la dimensión territorial del proceso de paz en la Zona Veredal de Transición y Normalización (ZVTN) de La Macarena / Normalization without Transition. Territorial Dimension of the Peace Process in the Transitional Village Zones of Normalization (ZVTN) of Sierra de la Macarena

Resumen En la Sierra de la Macarena se ubican tres de las 26 Zonas Veredales Transitorias de Normalización (ZVTN), dispuestas en los acuerdos de la Habana como lugares para concretar el cese bilateral y definitivo de hostilidades. Las Zonas han supuesto el espacio para el desarme y reincorporación a la vida civil de los combatientes de las FARC- EP. Una de tales Zonas se encuentra en inmediaciones de los llanos del Yarí en el poblado de Playa Rica. La historia de este territorio da cuenta de los conflictos propios de la colonización del piedemonte amazónico y de los impactos de la guerra civil. La adecuación de la Zona Veredal ha significado para las comunidades de la región la posibilidad de hallar cierta presencia del estado central que, sin su tradicional carácter contrainsurgente, ha sido objeto de crecientes movilizaciones sociales. Sin embargo, la incapacidad institucional para reconocer la historia organizativa y social de El Yarí, el pesado aparato burocrático que ralentiza la implementación de los acuerdos, así como los vacíos de poder que la disidencia de la guerrilla pretende copar, han implicado que en la Zona Veredal confluya un escenario social de normalización sin transición.

Abstract In the Sierra de la Macarena 3 out of the 26 Transitional Village Zones of Normalization (ZVTN) are located, as it was arranged in the agreements of Havana as places to put an end to bilateral and definitive cessation of hostilities. The Zones have represented a space for disarmament and reintegration into the civilian life of the combatants of FARC - EP. One of such zones is located in the immediate vicinity of Yari plains, in the town of Playa Rica. The history of this area provides the conflicts of colonization of the Amazon Foothill and the impacts of the civil war. The adequacy of the Village Zone, for the communities of the region, has meant the possibility of finding some presence of the central State that, without its traditional counterinsurgency character, has been the subject of growing social mobilizations. However, the institutional inability to recognize the organizational and social history of the El Yari, the heavy bureaucratic apparatus that slows down the implementation of the agreements, as well as the power vacuum that the dissidence of the guerrilla aims to copy, have implied that in the Village Zone merge a social scenario of normalization without transition.

Distribución geográfica y hábitat de la familia Trochilidae (Aves) en el estado de Guerrero, México / Geographical distribution and habitat of Trochilidae (Aves) in the state of Guerrero, Mexico

ResumenLa distribución y abundancia de la familia Trochillidae generalmente estan influenciadas por la floración y fenología de las plantas de las que se alimentan, principalmente en bosques primarios, por lo que los cambios en la cobertura de la vegetación pueden afectar a sus poblaciones. Se analizó la distribución geográfica y se caracterizó el hábitat para 22 especies residentes de colibríes presentes en el estado de Guerrero con base en el uso de suelo y vegetación de INEGI Serie IV (2007-2010). Los modelos de distribución se generaron con ayuda del Algoritmo Genético para la Producción de Conjuntos de Reglas (GARP), usando los registros históricos de colecciones científicas y trabajo de campo (2001-2009), en combinación con variables climáticas y topográficas. De las 22 especies modeladas, seis son endémicas a México, mismo número de especies que se encuentran en alguna categoría de riesgo. La mayor concentración potencial de la riqueza (14-20 especies), endemismo (5-6 especies) y especies en riesgo de colibríes (5-6 especies) está en la provincia biótica de la Sierra Madre del Sur. No obstante, la distribución potencial de la mayor parte de los colibríes se presenta en ambientes alterados o agroecosistemas resultado de los cambios en el uso del suelo. Solo en el caso de Campylopterus hemileucurus, Lamprolaima rhami y Heliomaster longisrostris, su distribución potencial es mayor en áreas de vegetación primaria. Las áreas de mayor concentración de colibríes no corresponden con las Áreas de Importancia para la Conservación de las Aves en Guerrero, lo que confirma que pese a su diversidad y su extrema popularidad, desde la perspectiva conservacionista los colibríes han recibido relativamente poca atención.

AbstractThe distribution and abundance of species of Trochillidae family is usually influenced by the flowering and phenology of plants used as a feeding source, mainly in primary forest, so that changes in vegetation cover could impact their populations. We analyzed and characterized the geographical distribution and habitat for 22 species of resident hummingbirds in the state of Guerrero using the vegetation and the land use map of INEGI Series IV (2007-2010). Distribution models were generated with the Genetic Algorithm for Rule Set Production (GARP), using historical records of scientific collections and fieldwork (2001-2009), in combination with climatic and topographic variables. Of the 22 modeled species, six are endemic to Mexico, the same number of species found in a risk category. The highest concentration with regards to richness (14-20 species), endemism (5-6 species) and number of threatened species of hummingbirds (5-6 species) occurred in the biotic province of Sierra Madre del Sur. However, the potential distribution of most of the hummingbirds occurred in disturbed sites or agroecosystems, as a result of changes in land-use. For Campylopterus hemileucurus, Lamprolaima rhami and Heliomaster longisrostris, their potential distribution was highest in areas of primary vegetation. Areas of high hummingbirds presence do not coincide with the Important Bird Areas proposed for bird conservation in Guerrero, considering that, despite its diversity and its extreme popularity, from the conservation perspective hummingbirds have received relatively little attention. Rev. Biol. Trop. 64 (1): 363-376. Epub 2016 March 01.

The Ebola-countering Operations in Sierra Leone Between UK and China and their implications:a comparative analysis / 军事医学

The UK Ebola-countering Operation in Sierra Leone from September 2014 to November 2015 called Operation Gritrock and its countermeasures were briefly introduced , such as the national strategy , aero-maritime deployment , self medical support , base-oriented training and international cooperation .A comparative analysis was made of operations of the same type between the UK and China in terms of mission-orientation, command and control , deployment timeline , past experience, deployment routes, logistics and assistance effects.Four implications for China′s military function construction in future international disaster relief operations were also summarized at the strategic , operational and tactical levels .

Evaluation of Heavy Metals Pollution of Surface Water from Arroyo San Ignacio in the Sierra Tarahumara, Mexico.

The aim of this work was to evaluate the metals content in surface water of Arroyo San Ignacio (San Ignacio stream) and its main tributary, which are located in a priority ecological region of Mexico. For this study, these streams were divided in three sampling zones establishing thirty two sampling sites. Al, As, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn were measured. Some physicochemical parameters were also evaluated. Results indicated significant difference (P≤0.05) in pH, electrical conductivity, total solids, Ca, K, Na, and Mg levels for the three zones but no differences in heavy metals contents were found. Results were compared with Mexican and international standards and showed that seven metals (Al, Fe, Ni, Mn, Cr, Pb and Cd) exceeded drinking water standards. This pollution is mainly due to increased anthropogenic activities in the region and will likely worsen in the future due to unsustainable practice of discharging wastes into the streams.

Pharmaceutical administration for anti-ebola outbreak mission of chinese military medical aid team in sierra leone / 中国药学杂志

OBJECTIVE: To summarize lessons of the medicine provision and management learned from the anti-Ebola outbreak mission in Sierra Leone executed by Chinese military medical aid team. METHODS: Summarizing the medicine preparing, shipping, storage and management procedure during the whole task period from 16 Sep, 2014 to 21 Mar, 2015. Anlyzing lessons and knowledge we have learned from the mission. RESULTS: According to the local health system situation and currently outbreak characters, the pharmaceutical group of the Chinese military medical aid team have prepared almost all types and dosages of medicines needed for the whole mission. Through feasible transportation pathway including cold chain, medicines were shipped to destination safely. Classified storage, detailed management and sorting system insured the high quality of the medicine distribution. CONCLUSION: The effective provision and scientific management of the pharmaceutical support of military medical aid team have made a good model for the emergency medical aid action abroad. The experiences we have obtained from this mission may be useful for the future performing of similar major overseas task of Chinese military.

Fertility status, Degradation Rate and Vulnerability Potential of Soils of Sowa Chiefdom in Southern Sierra Leone.

The present research was undertaken to study the fertility status of physicochemical properties and assess the degradation rate and vulnerability potential of soils of Sowa Chiefdom and suggest best management practices. Thirty-two composite samples from 0-20 and 20-40 cm were collected at fifteen locations and studied. The soils exhibited an irregular trend in particle size distribution with high proportion of sand in decreasing trend of sandy loam > sandy clay loam > loamy sand > sandy clay > clay. The soils were slightly acidic to moderately acidic in soil reaction (soil pH) with low to high organic carbon, medium to high nitrogen and low to high phosphorus. The content of exchangeable Ca2+ was medium to high, exchangeable Mg2+ was high, exchangeable Na+ was low to high and exchangeable K+ was low. The level of exchangeable acidity was low although the pH was slight to moderately acidic. The effective CEC values were within themedium to high range and the base saturation was high, thus indicating the potential availability of basic elements in the soils. The organic carbon, total nitrogen, available phosphorus, exchangeable Ca and Mg and base saturation were neither degraded nor vulnerable to degradation and therefore better soil quality indicators while exchangeable K was extremely degraded and highly vulnerable to degradation and therefore a poor soil quality indicator. The texture, soil pH, exchangeable Na and effective CEC showed moderate rate of degradation and vulnerability and these might be good soil quality indicators in the long term if the recommended soil management strategies are adopted.

Ecología reproductiva de Geobatrachus walkeri (Anura: Srabomantidae) / Reproductive ecology of Geobatrachus walkeri (Anura: Strabomantidae)

Geobatrachus walkeri is a frog that belongs to a monotypic genus and is endemic to the Sierra Nevada de Santa Marta, Colombia. The species inhabits different microhabitats between 2 000 to 3 500m altitude, including the leaf litter of a pine plantation. To understand its reproductive ecology, we conducted eight frog samplings, covering the rainy and dry seasons, and two habitat types (secondary native forest and pine plantation) during 2010-2011. For this study, we also included data obtained from five previous similar samplings undertaken during 2008-2009. The pine leaf litter was the main microhabitat where frogs were found; we heard choruses of six-ten calling males during all sampled months, and observed the frogs having diurnal and nocturnal activity. Regardless of the year of study, the population consisted of neonates recruited several times of the year, a large number of juveniles with a wide range of body sizes, and fewer adults with a narrower range of body size. The histological analyses of the gonads showed that the size at maturity was near 18mm SVL for males and females, and those adult males and females were reproductive active during all sampling months, suggesting a continuous reproductive activity pattern. However, during the dry season, the seminiferous tubules showed a drastically diminished spermatic epithelium although containing abundant luminal spermatozoa, which suggest a reduction in the sperm production at the end of this season. Similarly, frogs of all age categories were significantly more abundant during the early dry season, whereas were significantly less abundant with the advancement of the dryness suggesting that the intensity of the dry season could temporally stop the activity and reproduction of this population.

Geobatrachus walkeri es una rana que pertenece a un género monotípico y es endémica de la Sierra Nevada de Santa Marta, Colombia. La especie habita en diferentes microhábitats entre los 2 000 y 3 500m de altitud, incluyendo la hojarasca de una plantación de pinos. Para entender su ecología reproductiva se realizaron ocho muestreos de individuos, que abarcaron las estaciones de lluvias y de sequía y dos tipos de hábitats (bosque secundario y plantación de pino) durante 2010-2011. También se incluyeron los datos de cinco muestreos similares obtenidos previamente durante el período 2008-2009. El principal microhábitat donde las ranas se encontraron fue la hoja-rasca de pino, allí escuchamos coros de seis-diez machos durante todos los meses muestreados, y observamos que las ranas tienen actividad diurna y nocturna. Sin importar el año de estudio, la población se compone de neonatos reclutados en varios meses del año, un gran número de juveniles con un amplio rango de tamaños corporales, y un menor número de adultos con un rango más reducido de tamaño corporal. Los análisis histológicos de las gónadas mostraron que el tamaño a la madurez se adquiere cerca de los 18mm LRC para machos y hembras, y que los machos y hembras adultos fueron reproductivos durante todo el muestreo, lo que sugiere un patrón continuo de actividad reproductiva. Sin embargo, durante la estación seca, los túbulos seminíferos presentan un epitelio espermático drásticamente disminuido, aunque contienen abundantes espermatozoides luminales, lo que sugiere una reducción en la producción de espermatozoides en el final de la estación seca. Del mismo modo, las ranas de todas las categorías de edad fueron significativamente más abundantes durante el inicio de la estación seca, mientras que fueron significativamente menos abundantes con el avance de la sequedad, lo que sugiere que una mayor intensidad de la temporada de sequía podría detener temporalmente la actividad y la reproducción en esta población.