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Gastric ulceration caused by genetically identified Anisakis simplex sensu stricto in a harbor porpoise from the Western Pacific stock
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| Title: | Gastric ulceration caused by genetically identified Anisakis simplex sensu stricto in a harbor porpoise from the Western Pacific stock |
| Authors: | Katahira, Hirotaka Browse this author →KAKEN DB | | Matsuda, Ayaka Browse this author | | Banzai, Azusa Browse this author | | Eguchi, Yuya Browse this author | | Matsuishi, Takashi F. Browse this author →KAKEN DB |
| Keywords: | Harbor porpoise | | Anisakis simplex sensu stricto | | Genetic identification | | Histopathology |
| Issue Date: | Aug-2021 |
| Publisher: | Elsevier |
| Journal Title: | Parasitology international |
| Volume: | 83 |
| Start Page: | 102327 |
| Publisher DOI: | 10.1016/j.parint.2021.102327 |
| Abstract: | 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 as Anisakis simplex sensu 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. |
| Rights: | This manuscript version is made available under the CC-BY-NC-ND 4.0 license. | | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/86758 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松石 隆
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