Gastric ulceration caused by genetically identified Anisakis simplex sensu stricto in a harbor porpoise from the Western Pacific stock.
Gastric ulceration caused by genetically identified Anisakis simplex sensu stricto in a harbor porpoise from the Western Pacific stock.
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由基因鉴定的西太平洋港湾鼠海豚中的单纯异尖线虫引起的胃溃疡。
DOI：
10.1016/j.parint.2021.102327
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发表时间：
2021
影响因子：
1.9
通讯作者：
Takashi F. Matsuishi
中科院分区：
文献类型：
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作者：
Hirotaka Katahira;Ayaka Matsuda;Azusa Banzai;Yuya Eguchi;Takashi F. Matsuishi
异尖线虫属是一组众所周知的线虫，寄生在鲸类动物作为最终宿主，并对它们的胃造成粘膜损伤。然而，几乎没有做过什么，以准确地确定回收的线虫从最终的主机，特别是在西太平洋地区，因为分类学上的混淆兄弟物种的歧视和从鲸目动物获得标本的困难。我们描述的遗传鉴定和组织病理学观察的结果，从一个溃疡病变和胃内容物的前胃的雌性港口江豚意外捕获的集网渔业在日本南部北海道。根据ITS rDNA序列分析结果，所有标本均为单纯异尖线虫（Anisakissimplexensustricto），溃疡直径约6.3mm，共感染线虫119条，以L3和L4期幼虫为主（95.0%）。组织学切片的特征为局部广泛性溃疡，寄生虫渗透到肌层外，导致周围粘膜增厚。
The genus Anisakis is a well-known group of nematodes that parasitize cetaceans as the final host and cause mucosal damage to their stomach. However, little has been done to precisely identify the nematodes recovered from the final hosts, especially in the Western Pacific, because of taxonomic confusion about the discrimination of sibling species and the difficulties of obtaining specimens from cetaceans. We describe the results of genetic identification and histopathological observations of specimens recovered from an ulcerated lesion and stomach contents in the forestomach of a female harbor porpoise accidentally caught by a set net fishery in Usujiri, southern Hokkaido, Japan. All the specimens arbitrarily collected from the lesion and stomach contents were identified asAnisakis simplexsensu stricto according to their ITS rDNA sequences.The size of the ulcer was approximately 6.3 mm in diameter and it was infected with 119 individual nematodes, mostly consisting of L3 and L4 stage larvae (95.0%). Histological sections were characterized by a locally extensive ulcer with the parasites penetrating into the muscularis externa that caused a thickening of the surrounding mucosa.