里海海豹肠道组织中[具体名称未给出]的形态学和分子鉴定及其组织病理学效应
Morphological and molecular identification of , and its histopathological effect on the intestinal tissue of a Caspian seal ().
作者信息
Omidzahir Sh, Sayyad Shirazi A, Hosseini S M
机构信息
Department of Marine Biology, Faculty of Marine Sciences, University of Mazandaran, Babolsar, Iran.
Caspian Seal Rehabilitation and Research Center, Ashooradeh Island, Iran.
出版信息
Iran J Vet Res. 2020 Fall;21(4):308-313.
BACKGROUND
is a parasite from the Acanthocephala phylum with worldwide distribution. parasites are found in pinnipeds as their definitive host.
AIMS
This study aimed to investigate the morphological and molecular characteristics of , and its histopathological effect on the intestinal tissue of .
METHODS
A severe infection was observed in the small intestine of a juvenile male Caspian seal (). The morphological descriptions were done using light microscopy, and scanning electron microscopy (SEM). The molecular diagnosis was performed using partial sequences of internal transcribed spacer 1 (ITS1) and 5.8S ribosomal RNA () gene.
RESULTS
According to the results, the specimens were identified as The histopathological inspection of intestinal tissue revealed lesions in epithelial cells, mucosa, submucosa and muscle layers, destruction of intestinal glands, and infiltration of inflammatory cells.
CONCLUSION
Presence of such a severe infection in one of the individual Caspian seals can suggest the possibility of morbidity among other seals in the landlocked Caspian Sea. Thus, further research on their parasite infections is required for understating the status of the Caspian seal population and conserving this endangered species.
背景
是一种来自棘头虫门的寄生虫，分布于世界各地。在鳍足类动物中发现该寄生虫作为其终末宿主。
目的
本研究旨在调查的形态学和分子特征，及其对肠道组织的组织病理学影响。
方法
在一只幼年雄性里海海豹的小肠中观察到严重感染。使用光学显微镜和扫描电子显微镜（SEM）进行形态学描述。使用内部转录间隔区1（ITS1）和5.8S核糖体RNA（）基因的部分序列进行分子诊断。
结果
根据结果，标本被鉴定为。肠道组织的组织病理学检查显示上皮细胞、黏膜、黏膜下层和肌肉层有病变，肠腺破坏，炎性细胞浸润。
结论
在一只里海海豹个体中存在如此严重的感染表明在内陆里海的其他海豹中可能存在发病情况。因此，需要对它们的寄生虫感染进行进一步研究，以了解里海海豹种群的状况并保护这种濒危物种。
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