Prevalence of musculoskeletal disorders in the lower limbs among artisanal fisherwomen / shellfish gatherers of Brazil / Prevalência de distúrbios musculoesqueléticos nos membros inferiores de pescadoras artesanais/marisqueiras do Brasil

Introduction: Small-scale fishing is responsible for at least 40% of the fish consumed in the world. In Brazil, the worker in this sector is the artisanal fisherman, who accounts for one in every 200 Brazilians. Artisanal fishing is part of the informal economy; therefore, the pathologies that affect these fishermen are invisible in the country's official statistics. Musculoskeletal disorders represent a major socioeconomic and public health problem, but their prevalence is little known among non-formal workers. Objective: to estimate the prevalence of musculoskeletal disorders (MSDs) in the lower limbs and to verify the associated factors among artisanal fishermen/ fisherwomen from Saubara, Bahia, Brazil. Methodology: a cross-sectional study, using the Nordic Musculoskeletal Questionnaire (NMQ), the Brazilian version of the Job Content Questionnaire (JCQ) and a questionnaire about physical demands, were used to collect information in a random sample of artisanal fishermen/shellfish gatherers, in 2013. Results: the prevalence of MSDs in lower limbs in the sample was 65.5% (n=137). The prevalence of MSDs in the thigh/knee segment, leg and ankle/foot were 48.7% (n=92), 47.7% (n=95) and 38.1% (n=72), respectively. There was also a high frequency of obesity, poor education, low wages, early age at onset of labor, and excessive workload. Factors such as age, smoking, physical demands, working time, absence of breaks and having had a previous job were associated with MSDs in the lower limbs. Conclusion: the high prevalence of MSDs in lower limbs in female artisanal fishermen indicates the need to develop strategies for prevention, diagnosis and reporting of these diseases.

Introdução: a pesca em pequena escala é responsável por pelo menos 40% do pescado consumido no mundo e, no Brasil, o trabalhador desse setor é o pescador artesanal, que contabiliza um a cada 200 brasileiros. Por se tratar de uma atividade da economia informal, as patologias que afetam esses pescadores são praticamente invisíveis nas estatísticas oficiais do país. Nesse contexto, os distúrbios musculoesqueléticos representam um grande problema socioeconômico e de saúde pública, mas sua prevalência é pouco conhecida entre trabalhadores não formais. Objetivo: estimar a prevalência de distúrbios musculoesqueléticos nos membros inferiores e fatores associados, em pescadores artesanais/marisqueiras de Saubara, Bahia, Brasil. Metodologia: trata-se de um estudo transversal, utilizando o Nordic Musculoskeletal Questionnaire, a versão brasileira do Job Content Questionnaire e um questionário sobre demandas físicas, para a coleta de informações em uma amostra aleatória de pescadores artesanais/marisqueiras, ocorrida em 2013. Resultados: a prevalência de distúrbios musculoesqueléticos em membros inferiores na amostra foi de 65,5% (n=137); a prevalência no segmento coxa/joelho, perna e tornozelo/pé foi de 48,7% (n=92), 47,7% (n=95) e 38,1% (n=72), respectivamente. Observaram-se também alta frequência de obesidade, baixa escolaridade, baixos salários, idade precoce para o início do trabalho e carga horária excessiva. Fatores como idade, tabagismo, demandas físicas, tempo de trabalho, ausência de pausas e trabalho anterior, estavam associados aos referidos distúrbios. Conclusão: A alta prevalência de distúrbios musculoesqueléticos dos membros inferiores em pescadoras artesanais indica a necessidade de desenvolver estratégias de prevenção, diagnóstico e notificação dessas doenças

Anafilaxia à lapa: um caso clínico raro / Limpet anaphylaxis: a rare case

A lapa (Patella vulgata) é um molusco frequentemente encontrado em regiões costeiras com clima quente. A alergia alimentar à lapa é muito rara, com poucos casos descritos na literatura. Os autores descrevem um caso de anafilaxia à lapa, com evidência de reação de hipersensibilidade do tipo I, através de IgE específica positiva à lapa, tanto com métodos in vivo, como in vitro.

Limpet (Patella vulgata) is a mollusk mainly found in warm coastal regions. Limpet allergy is considered rare, and few cases can be found in the literature. We describe a clinical case of limpet anaphylaxis, including in vitro and in vivo evidence of IgE mechanism involvement.

Analysis of the pollution status of paralytic shellfish poisons in shellfish sold in Hainan Province, 2018-2021 / 中国热带医学

@#Abstract: Objective　To investigate the pollution of paralytic shellfish poisons (PSP) in shellfish sold in Hainan Province from 2018 to 2021. Methods　From 2018 to 2021, the content of 10 paralytic shellfish poisons including saxitoxin (STX), neosaxitoxin (neoSTX), gonyautoxins 1 (GTX1), gonyautoxins 2 (GTX2), gonyautoxins 3 (GTX3), gonyautoxins 4 (GTX4), gonyautoxins 5 (GTX5), decarbamoylsaxitoxin (dcSTX), decarbamoylgonyau toxins 2 (dcGTX2) and decarbamoylgonyau toxins 3 (dcGTX3) in 7 kinds of shellfish commonly sold in 13 cities and counties in Hainan province was analyzed. Results　The detection rate of PSP in 360 shellfish samples was 10.3%. Among them, the highest detection rate of STX was 5.83%, followed by GTX2 detection rate of 4.17%; the detection rate of neoSTX and GTX3 were both 1.67%; the detection rate of GTX1 was 1.39%. None of the five PSP, GTX4, GTX5, dcSTX, dcGTX2 and dcGTX3, were detected. Four types of PSP were detected in fanscallops, two were detected in oysters, mussels and Scapharca subcrenata, only one was detected in scallops, and no toxin contamination was detected in clams and razor clams. A single sample of fanscallops detected a maximum of 4 PSP, and a single sample of oysters, scallops, mussels and Scapharca subcrenata detected a maximum of 1 PSP. The equivalence of PSP in all samples was ND-155.6 μg/kg.The annual detection rate of PSP from high to low was: 20.0% in 2020, 15.6% in 2019, 5.3% in 2018, and 2.0% in 2021, and none of the samples tested exceeded the standard. Continuously detectable STX in 2018-2020, all PSP that could be detected in 2018 were STX. In 2019, in addition to STX detected in scallops and Scapharca subcrenata, neoSTX was also detected in oysters, mussels and Scapharca subcrenata. In 2020, PSP was only detected from scallops, and GTX2 could be detected in all positive specimens, while 5 STX, 5 GTX1 and 6 GTX3 were detected. Only GTX2 detected from scallops in 2021. STX was detected in shellfish sold in 12 cities and counties, GTX2 can be detected in 10 cities and counties, neoSTX can be detected in 5 cities and counties, GTX1 and GTX2 were detected in 4 cities and counties respectively. Shellfish sold in Wenchang and Lingshui markets can detect 5 types of PSP. Conclusion　Some types of shellfish on the market in Hainan are contaminated with some kind of PSP pollution risks, and it is necessary to strengthen the supervision of PSP in marketed shellfish.

Paralytic shellfish poisoning contamination status and dietary exposure assessment in coastal cities of China / 预防医学

@#Paralytic shellfish poisoning contamination is a threat to human health. Based on review of research articles pertaining to paralytic shellfish poisoning contamination in shellfishes and assessment of dietary exposure to paralytic shellfish poisoning in coastal cities of China from 2007 to 2022, the article describes the status of paralytic shellfish poisoning contamination, influencing factors and dietary exposure assessment in different sea areas of China (Bohai Sea, Huanghai Sea, East China Sea and South China Sea), and the relatively high-level contamination of paralytic shellfish poisoning in shellfishes is found to strongly correlate with red tides caused by season and water temperature in the Bohai Sea and South China Sea areas. Acute exposure assessment based on point estimate model is commonly used for assessment of dietary exposure to paralytic shellfish poisoning, and the risk of human dietary exposure to paralytic shellfish poisoning is within the acceptable range in most areas. Intensified monitoring of paralytic shellfish poisoning contamination in shellfishes and full consideration of parameters like processing factor during dietary exposure assessment are required in the future to allow more precise results.

Bacterial community associated with Pyrodinium bahamense var. compressum during late exponential growth phase based on 16S rRNA gene sequence analysis

Aims@#Pyrodinium bahamense var. compressum is one of the principal causal agents of harmful algal blooms (HABs) in the coastal waters of Sabah, Malaysia. Seafood and aquaculture products tainted with lethal concentrations of the principal neurotoxin, saxitoxin, have been implicated in mortality and morbidity. The bacteria-algae association may play a key role in paralytic shellfish toxin (PST) production during a toxic bloom event. The production of PST during a harmful bloom is unclear and research on the bacterial diversity associated with Sabah P. bahamense is scarce. The present study examined the cultivable bacteria diversity associated with P. bahamense through 16S ribosomal RNA (rRNA) gene sequence analysis.@*Methodology and results@#The V3-V4 region of the 16S rRNA gene sequence was amplified and used to identify bacterial populations associated with P. bahamense var. compressum. A total of 62 isolates were successfully isolated, belonging to three different phyla, which were Proteobacteria; 55 (89%), Bacteroidetes; 6 (10%) and Actinobacteria; 1 (1%). Out of 55 Proteobacteria, 27 isolates were gamma-Proteobacteria (Marinobacter salsuginis) and 28 of the isolates were alpha-Proteobacteria; Mameliella atlantica (13), Roseibium denhamense (10) and Roseibium hamelinense (5). The remaining bacteria isolates from the phyla Bacteroidetes and Actinobacteria were identified as Muricauda lutimaris (6) and Micrococcus luteus (1), respectively.@*Conclusion, significance and impact of study@#The analysis of the bacterial 16S rRNA gene revealed multiple bacterial taxa associated with the toxic P. bahamense var. compressum bloom. The findings of the present work will pave the way for further studies aimed at isolating and characterizing genes involved in the saxitoxin biosynthesis in the associated bacteria.

Toxinas Algales en el Mar Argentino: nuevos hallazgos, nuevos desafíos / Algal Toxins in the Argentine Sea: new findings, new challenges

Resumen Las floraciones de algas nocivas son un problema cada vez más frecuente a nivel mundial que ocasiona severos daños sobre la salud pública, pérdidas económicas en acuicultura, perjuicios al turismo y episodios de mortalidad de poblaciones naturales de peces, aves y mamíferos marinos. Las toxinas son producidas por el fitoplancton y se acumulan en moluscos bivalvos que se alimentan por filtración del agua siendo estos los principales vectores de intoxicación humana. En el Mar Argentino, se han reportado toxinas marinas de origen microalgal asociadas con cuatro síndromes de intoxicación por moluscos. Los síndromes más graves por su extensión, frecuencia, toxicidad y organismos afectados, son los originados por el dinoflagelado Alexandrium cate-nella responsable de la Intoxicación Paralizante por Moluscos la cual ha ocasionado numerosas muertes humanas. Seguidamente, la más leve, en cuanto a gravedad y frecuencia, ha sido la Intoxicación Diarreica por Moluscos. En contraste, el ácido domoico, conocido como toxina amnésica de moluscos, no ha producido hasta ahora intoxicaciones humanas. Recientemente, se amplió el rango de toxinas para la región al registrarse las toxinas y los dinoflagelados productores de la Intoxicación Azaspirácidos por Moluscos. Además, se han detectado las potencialmente tóxicas Yessotoxinas y Espirolidos, cuyos mecanismos de acción y toxicidad están siendo aún evaluados a nivel mundial. Estas toxinas emergentes para la región, representan un riesgo potencial para la salud e inconvenientes socioeconómicos por el cierre de los sitios de explotación de moluscos. Ciertamente presentan un nuevo desafío, pues la detección y cuantificación sólo puede realizarse por medio de métodos basados en HPLC - espectrometría de masas, lo cual dificulta el monitoreo en laboratorios regionales en el país. La herramienta clave de manejo es la prevención, a través de políticas, regulaciones y sistemas de monitoreo y control de cada grupo de toxinas. A través de estas mejoras, se anticipa que no sólo disminuirá el número de afectados por estas intoxicaciones, si no que se podrán realizar vedas más eficientes, asegurando un equilibrio que proteja tanto la salud pública como el desarrollo de la industria pesquera.

Abstract Harmful algal blooms are an increasingly common problem worldwide, causing severe damage to public health, economic losses in aquaculture, damage to tourism and mortality events of natural populations of fish, birds and marine mammals. The toxins are produced by phytoplankton and accumulated in bivalve molluscs that feed on water filtration, being these main vectors of human intoxication. In the Argentine Sea marine toxins of microalgal origin have been reported associated with four shellfish poisoning syn-dromes. The most serious due to their extension, frequency, toxicity and affected organisms are those caused by the dinoflagellate Alexandrium catenella responsible for the Paralytic shellfish poisoning that has caused numerous human deaths. Then, the mildest, in severity and frequency, is the Diarrhetic shellfish poisoning. In contrast, domoic acid, known as Amnesic shellfish toxin, has not produced human intoxications yet. Recently, toxins and dinoflagellate species causing Azaspiracid shellfish poisoning have been re-corded, expanding the range of toxins for the region. In addition, the potentially toxic Yessotoxins and Spirolides have been detected, whose mechanism of action and toxicity is still being evaluated worldwide. These emerging toxins represent a potential risk to public health and socioeconomic activities due to the eventual closure of mollusc exploitation sites. They certainly present a new challenge, since detection and quantification can only be carried out using methods based on HPLC - mass spectrometry, which makes monitor-ing in regional laboratories difficult. Prevention through policies, regulations, and monitoring and control systems of each toxin group is the key management tool. These preventive measures are expected to contribute to reducing the number of poisonings and to ap-plying more efficient fisheries closures, ensuring a balance that protects both public health and the development of the fishing industry.

Mulheres e mariscagem: invenções de si no (in)mundo mangue / Women and shellfish picking: inventions of themselves in the (un)clean mangrove forest / Mujeres y colecta de mariscos: invenciones de sí mismas en el (in)mundo mangle

O artigo decorre de uma pesquisa articulada ao projeto de extensão Fortalecimento Sociopolítico das Marisqueiras de Sergipe, parte do Programa de Educação Ambiental com Comunidades Costeiras. A pesquisa faz-se processo de habitação coletiva em defesa de territórios de vida tradicionais e da vida das mulheres marisqueiras, que veem seus territórios existenciais cotidianamente ameaçados por empreendimentos do grande capital. Inspiradas na etnografia e na cartografia, miramos nos processos de invenção da vida cotidiana das mulheres no mundo mangue. A perspectiva é pesquisar com marisqueiras, conhecer seus modos de vida e formas de resistência, que se tecem num território híbrido entre cidade, campo e mangue. Acompanhamos a construção do movimento social Mulheres Marisqueiras de Sergipe e, com ele, de redes de cuidado e ajuda mútua, invenções de si e de mundos correlatos, ampliando em ato sentidos para a categoria mulher e para o trabalho artesanal.

The present study is based on a research linked to the extension program project of Sociopolitical Empowerment of Shellfish Picker Women in the state of Sergipe, a stage of the Environmental Education Program for Coastal Communities. The project aims to empower the Movement of Shellfish Picker Women from Sergipe. The research is a process of collective habitation in defense of traditional living territories and the shellfish pickers’s lives, who see, daily, their existential territories threatened by large capital enterprises. Inspired by ethnography and cartography, we focused on the processes of invention of women’s daily life in the mangrove forest. The perspective is to research about shellfish picker women, learn about their lifestyle and ways of resistance, which are woven in a hybrid territory involving city, countryside and mangrove forest. We followed the construction of the social movement and, added to it, networks of care and mutual help, inventions of themselves and related worlds, broadening the meanings of the woman category and the handicraft work.

El trabajo resulta de una investigación articulada al proyecto de extensión "Fortalecimiento sociopolítico de las colectoras de mariscos de Sergipe, parte del Programa de Educación Ambiental con Comunidades Costeras". El objetivo del proyecto es fortalecer el Movimiento de las Colectoras de Mariscos de Sergipe. La investigación se hace proceso de habitación colectiva en defensa de territorios de vida tradicionales y de la vida de las mujeres marisqueras que ven sus territorios existenciales cotidianamente amenazados por emprendimientos del gran capital. Inspiradas en la etnografía y en la cartografía miramos los procesos de invención de la vida cotidiana de las mujeres en el mundo mangle. Acompañamos la construcción del movimiento social y, con él, de redes de cuidado y ayuda mutua, invenciones de sí mismas y de mundos correlatos, ampliando sentidos para la categoría mujer y para el trabajo artesanal.

Fatores associados com os distúrbios musculoesqueléticos em pescadoras artesanais/marisqueiras em Saubara, Bahia, Brasil / Factors associated with musculoskeletal disorders in artisanal fisherwomen/shellfish gatherers in Saubara, Bahia, Brazil

Resumo O presente artigo tem como objetivo identificar os fatores associados com os distúrbios musculoesqueléticos (DME) em pescoço/ombro e membros superiores distais em pescadoras artesanais/marisqueiras em Saubara, Bahia, Brasil. Trata-se de um estudo de corte transversal realizado com 209 pescadoras artesanais/marisqueiras. Foram utilizados para este estudo a versão brasileira do questionário de conteúdo do trabalho e do questionário nórdico e um questionário das demandas físicas para o trabalho. As análises multivariadas foram feitas de acordo com os principais fatores de risco para DME. Algumas demandas físicas agrupadas, nas etapas da coleta dos mariscos e na cata, se associaram, respectivamente, com DME em pescoço ou ombro [Razão de Prevalência - RP: 1,28 (IC95%: 1,09-1,49)] e DME em membros superiores distais [RP: 1,38 (IC95%: 1,05-1,83)], no modelo final ajustado. As RP ajustadas para DME em membros superiores distais foram de 1,26 (IC95%: 1,07-1,47), de acordo com as horas diárias dedicadas ao trabalho como marisqueira, e 0,74 (IC95%: 0,57-0,96) de acordo com o desenvolvimento de outro trabalho atualmente. O modo em que é desenvolvido o trabalho da marisqueira é importante para ocorrência dos DME.

Abstract This article aims to identify the factors associated with musculoskeletal disorders (MSDs) in the neck/shoulder and distal upper limb in artisanal fisher/shellfish gatherers in Saubara, Bahia, Brazil. This cross-sectional epidemiological study was conducted with shellfish gatherers. The Brazilian version of the Job Content Questionnaire (JCQ), the Nordic Musculoskeletal Questionnaire (NMQ), and a questionnaire containing physical demands adapted to the labour of shellfish gatherers were used in this study. Factor analysis was performed to aggregate the physical demands. Multivariate analyses were performed according to the risk factors for MSDs in the neck or shoulder and MSDs in the distal upper limb. For MSDs in the neck or shoulders, a prevalence ratio (PR) of 1.28 (95% confidence interval [95% CI]: 1.09-1.49) was found, according to the aggregate physical demands. For MSDs in the distal upper limb, the PRs were as follows: 1.26 (95% CI: 1.07-1.47) according to the daily hours devoted to work as shellfish gatherers, 0.74 (95% CI: 0.57-0.96) according to the development of other current work and 1.38 (95% CI: 1.05-1.83) according to the aggregate physical demands. The activities performed by shellfish gatherers contribute to the occurrence of MSDs.

Determination of PSP Toxins in Moroccan Shellfish by MBA, HPLC and RBA Methods: Links to Causative Phytoplankton Alexandrium minutum

Paralytic shellfish poisoning (PSP) toxins are secondary metabolites of the toxic species of phytoplankton. The consumption of shellfish accumulating these toxins can cause neurological symptoms and even death. Within the framework of the surveillance program of seafood safety along the Moroccan littoral environment established by National Institute of Fisheries Research (INRH), a study of PST was conducted from 2004 to 2016 in south Moroccan’s shellfish, mussels from south Agadir region and Razor Shell from Dakhla bay. The surveillance was carried out bi-monthly or weekly using the AOAC official method of analysis (AOAC 959.08) mouse bioassay (MBA). In parallel, monitoring of toxic phytoplankton in water was conducted. With the aim to determine the shellfish toxin profile, ion-pair high-performance liquid chromatography with post-column derivatisation and fluorescence detection (HPLC-FD) was performed. The Receptor Binding Assay (RBA) also was used for determination of total toxicity of PSP toxins in Agadir’s mussels.In both regions, the analysis of seawater revealed the presence of the toxic algae Alexandrium spp during toxics events. Along the coast of Agadir, PSP toxins in shellfish were associated with the presence of Alexandrium cf. minutum in seawater. These toxic events were widely distributed in time and space and mainly detected during the summer and fall seasons. In some samples concentrations exceeded the sanitary threshold (ST) of 800 ?g eq STX /kg. HPLC analysis revealed that Saxitoxin and Gonyautoxins dominated the toxin profile. The comparison between different methods showed a strong uphill (positive) linear relationship, with a coefficient correlation of r=0.79 between MBA and HPLC and r = 0.809 between MBA and RBA

Uso de monensina sódica en el cultiva de camarón marino Litopenaeus vannamei para el tratamiento de gregarinas en la Cooperativa Fauna Silvestre, Bahía de Jiquilisco: en asocio con Cooperativa Fauna Silvestre / Use of monensin sodium in the cultivation of marine shrimp Litopenaeus vannamei for the treatment of gregarines in Cooperativa Fauna Silvestre, Bahía de Jiquilisco: in association with Cooperativa Fauna Silvestre

Este proyecto estuvo orientado a evaluar el efecto del producto veterinario Monensina Sódica, un anticoccídico utilizado actualmente en el cultivo de camarón marino de la especie Litopennaeus vannamei para el tratamiento de la parasitósis por gregarinas. Durante la investigación se identificó la presencia de gregarinas en los estanques de la Cooperativa Fauna Silvestre; se estableció el porcentaje de la población infectada por gregarinas y se determinó el grado de afectación que presenta el cultivo, información que permitió seleccionar el estanque donde se instalaron tres japas, cada una con una dimensión de tres metros de largo por un metro y medio de ancho y un metro de profundidad; en cada japa se colocaron 100 camarones procedentes del mismo estanque. La aplicación del tratamiento fue por un periodo de 5 días, el cual consistió en evaluar el efecto de dos tratamientos con dosis de 8 y 10 gramos de Monensina Sódica por cada kilogramo de alimento que se suministra por separado a los camarones de las japas uno y dos; el tercer grupo de camarones será la japa testigo en el estudio. Posteriormente se evaluó el crecimiento de los camarones tratados durante un ciclo de cultivo y se comparó con los camarones que no recibieron tratamiento. Las muestras de camarón tomadas en campo fueron trasladadas en bolsas con agua y oxígeno hacia el laboratorio del Centro Regional MEGATEC La Unión, donde fueron procesadas mediante el método de análisis en fresco, método que permitió identificar el grado de infestación del parásito que se aloja en el intestino del camarón. Las muestras se tomaron antes y después de iniciar el tratamiento con Monensina Sódica. Durante la toma y procesamiento de las muestras se contó con la participación de estudiantes del Técnico en Manejo Integrado de Recursos Costero Marinos, con la finalidad de fortalecer sus capacidades mediante la aplicación de procedimiento, para detectar de forma temprana la presencia de Gregarinas en los cultivos de camarón marino.

This project was aimed at evaluating the effect of the veterinary product Monensin Sodium, an anticoccidic currently used in the culture of marine shrimp of the Litopennaeus vannamei species for the treatment of gregarine parasitosis. During the investigation, the presence of gregarines was identified in the ponds of the Cooperativa Fauna Silvestre; The percentage of the population infected by gregarines was established and the degree of affectation presented by the crop was determined, information that allowed selecting the pond where three japas were installed, each one with a dimension of three meters long by one and a half meters of width and a meter deep; 100 shrimp from the same pond were placed in each japa. The application of the treatment was for a period of 5 days, which consisted of evaluating the effect of two treatments with doses of 8 and 10 grams of Monensin sodium for each kilogram of food that is supplied separately to the shrimp of japas one and one. two; the third group of shrimp will be the control japa in the study. Subsequently, the growth of the treated shrimp was evaluated during a culture cycle and compared with the shrimp that did not receive treatment. The shrimp samples taken in the field were transferred in bags with water and oxygen to the laboratory of ITCA-FEPADE MEGATEC La Unión, where they were processed using the fresh analysis method, a method that allowed identifying the degree of infestation of the parasite that is housed in the intestine of the shrimp. The samples were taken before and after starting the treatment with Monensin sodium. During the taking and processing of the samples, students from the Technician in Integrated Management of Coastal Marine Resources participated, in order to strengthen their capacities through the application of a procedure to detect early the presence of Gregarines in crops. of marine shrimp.

Development of A High Performance Liquid Chromatography-Tandem Mass Spectrometry Method for Determination of Lipophilic Toxins in Marine Shellfishes and Edible Safety Evaluation / 分析化学

In view of the present situation that edible marine shellfishes are combinedly contaminated by different kinds of lipophilic toxins, common lipophilic shellfish toxins in marine shellfishes were simultaneously detected by liquid chromatography-tandem mass spectrometry, and the safety risk of commercial marine shellfish was evaluated using the risk assessment method based on combined contamination of various toxins. Under the optimum conditions, satisfactory recoveries (63. 3％ - 88. 8％ ), precision ( relative standard deviations RSD≤14. 5％ ) and sensitivity (limit of detection in the range of 0. 5-2. 7 ng / g) of the method were achieved for all the analytes. Among the 105 commercially available shellfish samples, 42. 86％ of the samples had at least a kind of toxin. The highest average content was 47. 6 μg / kg of DTX1, which was the most serious contaminant for marine shellfishes. The total Expose Risk Index (∑ERI) was calculated based on Tolerable Daily Intake (TDI) and Acute Reference Dose (ARfD) of each toxin to evaluate the safety risk of commercial marine shellfish. The results showed that the ratio of commercially available marine shellfish with safety risk was 19. 05％ and the food safety risk of scallop was the highest. In summary, a new method based on the combined contamination of lipophilic shellfish toxins was successfully developed for risk assessment of the commercial marine shellfish. The proposed method is more harsh compared with the European Food Safety Authority (EFSA) regulation and can make shellfish consumers better to avoid the risk of poisoning.

Shellfish/crustacean oral allergy syndrome among national service pre-enlistees in Singapore

BACKGROUND: All Singaporean males undergo medical screening prior to compulsory military service. A history of possible food allergy may require referral to a specialist Allergy clinic to ensure that special dietary needs can be taken into account during field training and deployment. OBJECTIVE: To study the pattern of food allergy among pre-enlistees who were referred to a specialist allergy clinic to work up suspected food allergy. METHODS: Retrospective study of all pre-enlistees registered in the Clinical Immunology/Allergy New Case Registry referred to the Allergy Clinic from 1 August 2015 to 31 May 2016 for suspected food allergy. RESULTS: One hundred twenty pre-enlistees reporting food allergy symptoms other than rash alone were referred to the Allergy Clinic during the study period. Of these, 77 (64.2%) had food allergy. Among those with food allergy, mean age was 19.1 ± 1.5 years. They comprised predominantly Chinese (66.2%) and Malays (20.8%). The most commonly reported foods were shellfish/crustaceans (78%), peanut (15.6%), and egg (6.5%). Self-limiting oral allergy syndrome, OAS (itchy lips and throat with/without lip angioedema) was the most common manifestation (n = 33, 42.9%) followed by anaphylaxis (n = 23, 29.9%). Majority of OAS was from shellfish/crustacean (90.6%); of which shrimp (30.3%), crab (15.2%), and lobster (3.0%) were the most common. Mild childhood asthma (69.7%), allergic rhinitis (6.3%), and eczema (6.1%) were the most common atopic conditions among individuals with shellfish/crustacean OAS. This pattern was similar for shellfish/crustacean anaphylaxis. Skin prick tests were most commonly positive for shrimp (OAS 87.1% vs. anaphylaxis 100%), crab (OAS 95.8% vs. 90.9%), and lobster (OAS 91.7% vs. 63.6%). CONCLUSION: OAS to shellfish/crustaceans was more common than anaphylaxis among this study population of young males referred for food allergy symptoms other than rash alone.

Utility of Droplet Digital PCR Assay for Quantitative Detection of Norovirus in Shellfish, from Production to Consumption in Guangxi, China / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>Shellfish are recognized as important vehicles of norovirus-associated gastroenteritis. The present study aimed to monitor norovirus contamination in oysters along the farm-to-fork continuum in Guangxi, a major oyster production area in Southwestern China.</p><p><b>METHODS</b>Oyster samples were collected monthly from farms, markets, and restaurants, from January to December 2016. Norovirus was detected and quantified by one-step reverse transcription-droplet digital polymerase chain reaction (RT-ddPCR).</p><p><b>RESULTS</b>A total of 480 oyster samples were collected and tested for norovirus genogroups I and II. Norovirus was detected in 20.7% of samples, with genogroup II predominating. No significant difference was observed in norovirus prevalence among different sampling sites. The norovirus levels varied widely, with a geometric mean of 19,300 copies/g in digestive glands. Both norovirus prevalence and viral loads showed obvious seasonality, with a strong winter bias.</p><p><b>CONCLUSION</b>This study provides a systematic analysis of norovirus contamination 'from the farm to the fork' in Guangxi. RT-ddPCR can be a useful tool for detection and quantification of low amounts of norovirus in the presence of inhibitors found particularly in foodstuffs. This approach will contribute to the development of strategies for controlling and reducing the risk of human illness resulting from shellfish consumption.</p>

Systematic Review of Heavy Metal Concentrations in Fish and Shellfish in Korea / 이화의대지

OBJECTIVES: Heavy metals ingested through the consumption of aquatic products can accumulate in the human body over the long-term and cause various health problems. This study aims to present comprehensive data on the amount of heavy metals found in fish and shellfish in Korea using a systematic review of studies that report on that issue. METHODS: The study used the following databases: PubMed, Korean Studies Information Service System, and Research Information Sharing Service. The search terms for PubMed included fish OR shellfish OR seafood AND mercury OR cadmium OR lead OR heavy metal AND Korea. The search terms for Korean Studies Information Service System and Research Information Sharing Service included eoryu sueun, eoryu kadeumyum, eoryu nab, eoryu jung-geumsog, paeryu sueun, paeryu kadeumyum, paeryu nab, paeryu jung-geumsog, eopaeryu sueun, eopaeryu kadeumyum, eopaeryu nab, and eopaeryu jung-geumsog. RESULTS: A total of 32 articles were selected for review. The total mercury, lead, and cadmium concentrations in fish and shellfish reported in each of the articles are summarized, as are the species of fish and shellfish with relatively high concentrations of heavy metals. Total mercury concentrations tended to be higher in predatory fish species, such as sharks, billfishes, and tuna, while lead and cadmium concentrations tended to be higher in shellfish. CONCLUSION: This paper is the first to report a comprehensive summary of the concentrations of heavy metals in fish and shellfish. This data could be used as evidence to protect Koreans from exposure to heavy metals due to the consumption of highly polluted aquatic products.

Artisanal fisherwomen/shellfish gatherers: analyzing the impact of upper limb functioning and disability on health-related quality of life / Pescadoras artesanais/marisqueiras: análise do impacto da funcionalidade e incapacidade de membros superiores sobre a qualidade de vida relacionada com a saúde

Abstract The aim is to analyze upper limb functioning and disability, and its association with health-related quality of life among artisanal fisherwomen from Bahia, Brazil. Cross-sectional epidemiological study was conducted with a sample of 209 fisherwomen. Structured questionnaires were used for socio-demographic and comorbidity information, as well as the instruments Disabilities of the Arm, Shoulder and Hand (DASH) and Short-Form Healthy Survey (SF-36) respectively, to evaluate the upper limbs and health-related quality of life. The results demonstrated that the presence of musculoskeletal disorders in the upper limbs directly affects the values of the DASH instrument and the SF-36v01 questionnaire scores, while also generating a negative correlation between the DASH and SF-36v01. The varying functioning abilities, pain and social aspects negatively affect upper limb function, and the daily activities and work of fisherwomen. The presence of chronic disease and the absence of intervention and rehabilitation for these professionals, that could produces, in a long-term, cases of disability.

Resumo O objetivo foi analisar a incapacidade e a funcionalidade de membros superiores e verificar sua associação com a qualidade de vida relacionada com a saúde de pescadoras artesanais da Bahia, Brasil. Estudo epidemiológico, de corte transversal, envolvendo uma amostra de 209 pescadoras artesanais. Foram utilizados questionários estruturados para informações sociodemográficas e comorbidades e os instrumentos Disabilities of the Arm, Shoulder and Hand (DASH) e Medical Outcomes Study 36-Item Short-Form Healthy Survey (SF-36), para, respectivamente, avaliação dos membros superiores e qualidade de vida relacionada com a saúde. Os resultados encontrados demonstram que a presença de distúrbios musculoesqueléticos (DME) em membros superiores afeta diretamente os valores do instrumento DASH e os escores do SF-36v01, bem como a correlação negativa encontrada entre o DASH e os domínios do SF-36v01. As variáveis capacidade funcional, dor e aspectos sociais afetam negativamente a funcionalidade de membros superiores e as atividades do cotidiano e do trabalho de pescadoras artesanais. A presença de doença crônica e a ausência de intervenção e reabilitação desses profissionais geram, a longo prazo, casos de incapacidade.

Determination of tetrodotoxin in nassarius and shellfish by hydrophilic liquid chromatography-tandem mass spectrometer coupled with dispersive solid phase extraction / 中国食品卫生杂志

Objective In order to analyze of poisoning causes,a new method was established utilizing hydrophilic liquid chromatography-tandem triple quadrupole mass spectrometer (HILIC-MS/MS) coupled with dispersive solid phase extraction for rapid qualitative and quantitative analysis of tetrodotoxin in nassarius and shellfish.Methods Sample (1.0 g) was extracted with 0.1％ acetic acid in boiling water bath,purified by dispersive solid phase extraction with 50 mg hydrophilic-lipophilic balance (HLB),5 mg graphitized carbon black (GCB) and protein precipitation with acetonitrile,and then filtered through a polytetrafluoroethylene (PTFE) membrane.The analytes were separated on a HILIC column,and detected in selected reaction monitoring (SRM) mode via positive electrospray ionization.The matrix matching and external standard method was used for quantification.Results Tetrodotoxin showed good linearity in the concentration range between 2.0 and 40.0 ng/ml,the correlation coefficient was higher than 0.999.The detection limit of tetrodotoxin in seafood was 10.0 pg/kg.The rates of recovery varied between 74.2％ and 87.9％ with relative standard deviations from 2.3％ to 9.1％ at spiked concentrations of 25,100 and 200 pg/kg.The proposed method was applied in the detection of tetrodotoxin in shellfish and nassarius from coastal cities of Zhejiang Province.Conclusion The method was accurate,fast,easy to operate,which could meet the requirements of public health emergency testing or routine testing.

Risk assessment of cadmium exposure in shellfish in Guangdong Province / 中国食品卫生杂志

Objective To investigate the content of cadmium in shellfish in Guangdong Province and make dietary exposure assessment of cadmium in shellfish.Methods The shellfish samples were collected from Pearl River Delta,Eastern and Western Guangdong Province using random sampling method.Point assessment method was used to evaluate the exposure of dietary cadmium intake from shellfish.The risk of dietary cadmium exposure from shellfish were evaluated.Results Three hundred and seven samples were included in the analysis.The median concentration of cadmium in shellfish was 0.630 mg/kg and the exceeding standard rate was 23.8％ (73/307).The exceeding standard rates in Eastern Guangdong,Western Guangdong and Pearl River Delta were 19.4％ (13/67),23.5％ (16/68),and 25.6％ (44/172),respectively.The corresponding median concentration of cadmium were 0.530,0.806 and 0.853 mg/kg,and the difference was not statistically significant (x2 =0.94,P ＞ 0.05).The average (P50) and high level (P97.5) daily intake of cadmium from shellfish by the total survey population was 0.957 μg/d,and 4.511 μg/d,respectively.The monthly intake of cadmium associated with shellfish calculated from average and P97.5 exposure doses accounted for 1.91％ and 9.02％ of PTMI,respectively.Conclusion The cadmium content of some shellfish in Guangdong Province exceeded the standard.However,the cadmium intake from shellfish by the survey population was not high.

Assessment of Fish and Shellfish Consumption of Coastal Barangays along the Marilao-Meycauayan-Obando River System (MMORS), Philippines

Introduction Fishes and shellfish not only contribute to food and nutrition security but also to the livelihood of coastal communities in the Philippines. However, some fishing grounds are contaminated and health advisories against seafood consumption are issued, which may negatively affect the fishing communities’ livelihood. This study aimed to assess fish and shellfish consumption of households living in selected coastal barangays of the Marilao-Meycauayan-Obando River System ( MMORS). The food systems framework was applied whereby fish and shellfish consumption and livelihoods were viewed as part of a larger food system. Methods: The study was conducted in five barangays of the MMORS. A total of 110 household respondents were selected based on systematic random sampling. Key informants were interviewed to determine fish farm production and distribution. The final questionnaire included questions on socio-demographic information, household consumption information on frequency of consumption of fishes and shellfishes, sources of produce, fish and shellfish preparation and cooking methods, and perceptions on the fish produce in the area. Data were encoded and tabulated while qualitative data were analysed using thematic analysis. Results: Fishes and shellfishes are grown in earth-diked fish ponds using river water or harvested along the river system. No post-harvest processing is done and harvests are directly sold in fish markets within the area or nearby towns depending on the price and size of harvests. Fish consumption in both areas is affected by taste, tradition, price, nutritional value, age, gender and intra-household roles, and is found to be higher compared to national levels in the Philippines. Conclusion: The feedback of health and nutrition advisories which are based on food consumption patterns to other food outcomes like livelihoods and ecological health were included in this study. Based on the findings, it is suggested that appropriate interventions should be implemented to balance food system outcomes.

Diagnóstico del impacto generado por la mortalidad en el cultivo de camarón marino en granjas del sector El Zompopero, San Hilario, municipio de Jiquilísco, departamento de Usulután: en vínculo con cooperativas de San Hilario / Diagnosis of the impact generated by mortality in the farming of Marine Shrimp in the Zompopero sector, San Hilario, a community of Jiquilísco, department of Usulután in connection with cooperatives of San Hilario

El sector El Zompopero ubicado en la Bahía de Jiquilisco Usulután, es un núcleo productivo integrado por cinco cooperativas que se dedican al cultivo de camarón blanco de la especie Litopenaeus vannamei. Los miembros que integran las cooperativas son familias desmovilizadas de la guerra civil de El Salvador, a quienes se les repartieron tierras en esta zona costera como estrategia de reinserción a la vida productiva. Cuentan con un total de 21 estanques de tierra, que cubren un área de cultivo de 84.3 hectáreas y realizan tres ciclos de cultivo de camarón al año. Actualmente este sector productivo enfrenta serios problemas debido a la alta mortalidad que se registra en cada ciclo productivo. Por esta razón, la Escuela de Ciencias del Mar del Centro Regional MEGATEC La Unión realizó un proyecto de investigación aplicada para diagnosticar las principales causas que generan la mortalidad en los cultivos, así como el impacto económico y social que perciben las familias que se dedican a la producción de camarón. A través del diagnóstico se identificaron 5 causas externas y 15 internas que afectaron la producción en las granjas camaroneras en el año 2014. Las causas están asociadas al manejo del cultivo y a las condiciones de infraestructura de los estanques en las cooperativas.

The El Zompopero sector, located in the Bahía of Jiquilisco, Usulután, is a productive nucleus made up of five cooperatives that are dedicated to the white shrimp farming of the Litopenaeus vannamei species. The members that make up the cooperatives are families demobilized from the civil war in El Salvador, to whom land was distributed in this coastal area as a strategy for reintegration into productive life. They have a total of 21 earthen ponds, which cover a cultivation area of ​​84.3 hectares and carry out three shrimp farming cycles per year. Currently this productive sector faces serious problems due to the high mortality that is recorded in each productive cycle. For this reason, the Escuela de Ciencias del Mar, ITCA-FEPADE MEGATEC La Unión carried out an applied research project to diagnose the main causes that generate mortality in crops, as well as the economic and social impact perceived by families that are dedicated to shrimp production. Through the diagnosis, 5 external and 15 internal causes were identified that affected production in shrimp farms in 2014. The causes are associated with the management of the crop and the infrastructure conditions of the ponds in the cooperatives.

Evaluación del crecimiento y la sobrevivencia de ostra japonesa (Cassostrea gigas) en cultivos desarrollados en Meanguera del Golfo, departamento de La Unión, El Salvador / evaluation of growth and survival of japanese oyster (Cassostrea gigas) in crops grown in Meanguera del Golfo, department of La Unión, El Salvador

La Escuela Especializada en Ingeniería ITCA-FEPADE Centro Regional MEGATEC La Unión, a través de la carrera "Técnico en Manejo Integrado de Recursos Costero Marinos, con especialidad en Acuicultura y Pesquería" y en coordinación con el Centro de Desa- rrollo de la Pesca y la Acuicultura (CENDEPESCA), se desarrolló el proyecto de investigación aplicada para determinar el crecimiento y sobre vivencia en cultivos de Ostra Japonesa, con la finalidad de buscar y proponer alternativas de cultivo a los productores acuícolas del municipio de Meanguera del Golfo, departamento de La Unión. Para la implementación de este proyecto de investigación, se realizó una siembra de 7,000 semillas de ostras, que fueron colocadas suspendidas en la columna de agua de un sistema de cultivo constituido por un Long Line y linternas de 5 pisos cada una. Al final del periodo de cultivo se cosecharon organismos con tamaño promedio de 5.5 cm, con una sobre vivencia del 7%. El mayor depredador encontrado fue el caracol (Cymatium wiegmanni) y el rango de temperaturas durante este periodo de cultivo fue de 30.1 y 30.5 °C.

The Specialized School in Engineering ITCA-FEPADE, regional Centre MEGATEC in La Unión, through its career "Technician in Integrated Control Coastal marine resources, with an aquaculture and fishery emphasis" and in conjunction with The Development of Fishing and Aquaculture Center (CENDEPESCA), implemented an applied research project to determine the growth and survival in Japanese oyster farming so as to find and propose farming alternatives to aquaculture producers from the municipality of Meanguera del Golfo, departamento de la Unión. To implement this research project, 7,000 oysters were farmed and placed hanging from the water column of a farming system made up of a Long line and flashlights of 5 levels each. By the end of the farming period, organisms with an average size of 5.5 cm were harvested with a 7% survival chance. The main oyster predator found was the (Cymatium wiegmanni) snail, and the temperature range during the farming period was between 30.1 and 30.5 °C.