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首页> 外文期刊>Journal of Fish Diseases >Naturally occurring lesions and micro-organisms in two species of free-living sharks: the spiny dogfish, Squalus acanthias L., and the smooth dogfish, Mustelus canis (Mitchill), from the north-western Atlantic
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Naturally occurring lesions and micro-organisms in two species of free-living sharks: the spiny dogfish, Squalus acanthias L., and the smooth dogfish, Mustelus canis (Mitchill), from the north-western Atlantic

机译：两种自由生存的鲨鱼的自然发生的病变和微生物：多刺的鲨鱼（Squalus acanthias L.）和光滑的鳕鱼（Muschillus canis（Mitchill）），来自西北大西洋

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摘要

Twenty-three smooth dogfish, Mustelus canis L., and 20 spiny dogfish, Squalus acanthias (Mitchill), were examined for the presence of diseases. Sharks were collected from the north-western Atlantic between April and September 2000. Major organs were sampled for histopathology and bacterial cultures were taken from kidneys. Macroscopic lesions were infrequent and included intestinal cestodiasis and gastric and dermal erosions. Microscopic lesions were common in both shark species. Mustelus canis had numerous degenerative lesions involving the pancreatic ducts, seminiferous tubules and coronary vessels. The most frequent lesions in S. acanthias were parasitic and included pancreatic nematodiasis and biliary myxosporeosis. Additionally, both species had focal meningitis, encephalitis, dermatitis, gastritis, enteritis and glomerulomesangial thickening. Microscopic parasites included intestinal coccidiosis, unclassified gastric and testicular protozoa, skeletal muscle and renal tubular myxosporeans, a branchial trichodinid ciliate, olfactory and branchial trematodes, gastrointestinal cestodes and larval nematodes. Shewanella putrefaciens, Photobacterium sp., Vibrio sp., Pseudomonas sp. and Alteromonas sp. were isolated from kidneys of nine sharks. The role of the above lesions in the natural mortality and morbidity of the two shark species is unknown. The finding that apparently healthy sharks can harbour potentially debilitating lesions warrants the inclusion of histopathological studies in the management and conservation of sharks.
机译：检查了二十三条光滑的fish鱼（Mustelus canis L.）和二十只有刺的fish鱼（Squalus acanthias（Mitchill））是否存在疾病。 2000年4月至2000年9月之间，从西北大西洋采集鲨鱼。对主要器官进行了组织病理学采样，并从肾脏采集了细菌培养物。肉眼可见的病变很少见，包括肠粘膜炎，胃和皮肤糜烂。两种鲨鱼种类中常见的是微观损伤。犬鼬有许多退化性病变，涉及胰管，生精小管和冠状血管。棘皮棘皮病中最常见的病变是寄生虫，包括胰腺线虫病和胆道粘液性孢子病。另外，这两个物种都患有局灶性脑膜炎，脑炎，皮炎，胃炎，肠炎和肾小球膜小球膜增厚。显微镜下的寄生虫包括肠球虫病，未分类的胃和睾丸原生动物，骨骼肌和肾小管粘虫孢子，分支纤毛虫，纤毛，嗅和分支吸虫，胃肠道虫和幼虫线虫。希瓦氏菌，光杆菌属，弧菌属，假单胞菌属。和Alteromonas sp。从九只鲨鱼的肾脏中分离出来。上述损害在这两种鲨鱼物种的自然死亡率和发病率中的作用尚不清楚。显然健康的鲨鱼可能带有可能使人衰弱的病变的发现，将组织病理学研究纳入了鲨鱼的管理和保护之中。

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