Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add filters








Type of study
Year range
1.
Rev. bras. ciênc. vet ; 27(1): 3-6, jan./mar. 2020. ilus
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1491658

ABSTRACT

O interesse pelo estudo de animais silvestres vem crescendo consideravelmente nos últimos anos, seja em decorrência do riscode extinção ou visando o controle de doenças, especialmente as zoonoses. A ordem Rodentia apresenta o maior número deespécies da classe Mammalia. Apesar de ampla distribuição e importância, dados sobre sua anatomia vascular renal são escassosna literatura. O objetivo deste artigo é relatar o aparecimento de variação numérica na artéria renal esquerda em Sphiggurusvillosus com enfoque nas possibilidades de implicações clínico-cirúrgicas, como, anastomoses cirúrgicas, estudos imaginológicos,nefrectomias e planejamento pré-operatório para redução de riscos e complicações como hemorragia. O cadáver foi devidamenteformolizado no Laboratório de Ensino e Pesquisa em Morfologia de Animais Domésticos e Selvagens e posteriormente dissecado.O rim esquerdo apresentou três artérias renais, uma cranial, uma intermediaria e outra caudal, ambas posicionadas em nível de L2emergindo de forma impar lateralmente da aorta abdominal. A primeira artéria, mais cranial, apresentou 10,52 mm de comprimentoe se dirigiu diretamente para o hilo renal, emitindo ramo para adrenal, diafragma e musculatura sublombar. A segunda artéria,intermediária, mediu 7,77 mm, emitiu ramo cranial e caudal para o hilo renal e ramo ureteral. A terceira artéria, caudal, mediu10,11 mm e se dirigiu para o hilo renal. A veia renal esquerda era única e apresentou 9,25 mm de comprimento, posicionada emnível de L1. Este é o primeiro relato de artéria renal tripla em mamífero silvestre.


Interest in the study of wild animals has grown considerably in recent years, either due to the risk of extinction or to control diseases,especially zoonoses. The order Rodentia has the largest number of species in the Mammalia class. Despite its wide distributionand importance, data on its renal vascular anatomy are scarce in the literature. The aim of this paper is to report the appearanceof numerical variation in the left renal artery in porcupine focusing on the possibilities of clinical and surgical implications, suchas surgical anastomoses, imaging studies, nephrectomies and preoperative planning to reduce risks and complications such asbleeding. The animal was duly formalized in the Laboratory of Teaching and Research in Morphology of Domestic and Wild Animalsand subsequently dissected. The left kidney had three renal arteries, one cranial, one intermediate, and one caudal, both positionedat L2 level, emerging unevenly laterally from the abdominal aorta. The first more cranial artery was 10.52 mm long and directeddirectly into the renal hilum, emitting a branch to the adrenal, diaphragm and sub lumbar muscles. The second intermediate arterymeasured 7.77 mm, emitting a cranial and caudal branch to the renal hilum and ureteral branch. The third caudal artery measured10.11 mm and headed straight for the renal hilum. The left renal vein was unique, measured 9.25 mm long, and positioned at L1level. This is the first report of triple renal artery in wild mammals.


Subject(s)
Animals , Renal Artery/anatomy & histology , Porcupines/anatomy & histology , Porcupines/classification , Kidney/anatomy & histology
2.
Rev. biol. trop ; 62(4): 1481-1494, oct.-dic. 2014. graf, mapas, tab
Article in English | LILACS | ID: lil-753705

ABSTRACT

Land use changes by human activities have been the main causes of habitats and wildlife population degradation. In the Tehuantepec Isthmus in Oaxaca, the tropical habitat of the porcupine Sphiggurus mexicanus has been subject to vegetation and land use changes, causing its reduction and fragmentation. In this study, we estimated vegetation cover and land use (δn) change rates and assessed habitat availability and potential corridors for possible porcupine movements to avoid its isolation. In the study area, the type of vegetation with the most change rate value was the savanna (δn=-2.9), transformed into induced grasslands. Additionally, we have observed the porcupine (since 2011) in semi-deciduous (δn=-0.87) and tropical dry (δn=-0.89) forests that have been transformed in temporal agriculture and mesquite and induced grasslands. The vegetation inhabited by the porcupine resulted in recording a total of 64 plant species (44 trees, nine vines, seven herbs, four shrubs), of which the vine Bunchosia lanceolata showed the highest importance value (41.85) followed by the trees Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), and Enterolobium cyclocarpum (17.02). The habitat evaluation and potential corridor analysis showed that only 1 501.93ha could be considered as suitable habitats with optimum structural conditions (coverage, surface, and distances to transformed areas) to maintain viable populations of S. mexicanus, and 293.6ha as corridors. An increasing destruction of the porcupines’ habitat has been observed in the study area due to excessive logging, and actions for this species and its habitat conservation and management have to be taken urgently. Rev. Biol. Trop. 62 (4): 1481-1494. Epub 2014 December 01.


Los cambios de uso del suelo por actividades humanas, han sido de las principales causas de la degradación, reducción y fragmentación de los hábitats y poblaciones de fauna silvestre. En el Istmo de Tehuantepec, Oaxaca, el hábitat del puercoespín tropical Sphiggurus mexicanus, se encuentra sometido a cambios de cobertura vegetal y uso del suelo, que están causando la reducción y fragmentación de su hábitat. Debido a ello, estimamos las tasas de cambio de la cobertura vegetal y uso del suelo (δn), y evaluamos la disponibilidad del hábitat y de corredores vegetales potenciales para los posibles movimientos del puercoespín tropical y evitar su aislamiento. En el área de estudio el tipo de vegetación con mayor valor de tasa de cambio fue la sabana (δn=-2.9), transformado en pastizal inducido. Adicionalmente, observamos puercoespínes (desde 2011) en selva mediana subperennifolia (δn=-0.87) y selva baja caducifolia (δn=-0.89), los cuales han sido transformados en áreas de cultivo, selva baja espinosa y pastizal inducido. Caracterizamos la vegetación del hábitat del puercoespín, registrando un total de 64 especies vegetales (44 árboles, nueve bejucos, siete hierbas y cuatro arbustos), de los cuales, el bejuco Bunchosia lanceolata, presentó los valores más altos de importancia (41.85), seguidos por los árboles Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), y Enterolobium cyclocarpum (17.02). El análisis de evaluación de hábitat y corredores potenciales mostró que solo 1 501.93ha pueden considerarse como hábitats adecuados con condiciones estructurales (de cobertura, superficie y distancias a áreas transformadas) para mantener poblaciones viables de S. mexicanus; y 293.6ha como corredores. La destrucción del hábitat del puerco espín en el área de estudio está incrementándose por la tala excesiva, por lo tanto, es prioritario emprender acciones para la conservación y manejo del taxón y su hábitat.


Subject(s)
Animals , Ecosystem , Porcupines/classification , Conservation of Natural Resources , Mexico , Population Dynamics , Porcupines/physiology
SELECTION OF CITATIONS
SEARCH DETAIL