在巴西北海岸搁浅的矮抹香鲸Kogia sima （Owen, 1866）身上发现与八角虫科线虫感染相关的胃病变

IF 2 3区医学 Q3 ECOLOGY

International Journal for Parasitology-Parasites and Wildlife Pub Date : 2024-12-04 DOI:10.1016/j.ijppaw.2024.101028

Gisele C.C. Seade , David F. Conga , Tiago S. Santos , Marcio O. Moura , Diana M. de Farias , Lana O. Silva , Alexandra F. Costa , Tayanna M. Amaral , Maura M. de Souza , Renata Emin-Lima , Alessandra Scofield , Gabriela Riet-Correa , Valíria D. Cerqueira , Pedro S. Bezerra Júnior

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引用次数: 0

摘要

本研究旨在描述巴西北部帕尔州东北海岸搁浅的矮抹香鲸（Kogia sima）标本中与不同线虫寄生有关的胃病变。从一头搁浅在巴西帕尔州humait海滩上的侏儒抹香鲸身上采集了蠕虫标本和胃组织样本。胃可见糜烂和溃疡，粘膜被纤维蛋白坏死物质覆盖，其中含有细菌和主要由多形核细胞组成的炎症浸润。粘膜下层也可见肉芽肿，以中心坏死出血为特征，并可见线虫横切面。对拟terranova属四期幼虫、异尖蝽属四期幼虫和paggiae Skrjabinisakis成虫进行了形态鉴定。分子和系统发育分析证实了paggiae成虫cox2 mtDNA基因部分序列的同源性。本研究有助于我们了解不同的八角线虫在巴西北部地区的分布和与这些线虫相关的胃病变，并扩大了对巴西北部地区首次记录的这种水生哺乳动物的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Gastric lesions associated with the infection of Anisakidae nematodes in a dwarf sperm whale Kogia sima (Owen, 1866) stranded in the north coast of Brazil

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Gastric lesions associated with the infection of Anisakidae nematodes in a dwarf sperm whale Kogia sima (Owen, 1866) stranded in the north coast of Brazil

The present study aimed to describe gastric lesions associated with parasitism by different nematodes of the family Anisakidae in a stranded specimen of dwarf sperm whale (Kogia sima) on the northeast coast of the State of Pará, northern Brazil. Specimens of helminths and samples of stomach tissue were collected from a dwarf sperm whale, stranded on Humaitá beach, State of Pará, Brazil. Stomach showed areas of erosion and ulcers, with the mucosa covered by fibrinonecrotic material containing bacteria and inflammatory infiltrate predominantly comprising polymorphonuclear cells. Granulomas were also found in the submucosa, characterized by central areas of necrosis and hemorrhage, and cross sections of nematodes were observed. Fourth-stage larvae of the genus Pseudoterranova, two morphotypes of fourth-stage larvae of the genus Anisakis and adult specimens of Skrjabinisakis paggiae were morphologically identified. Molecular and phylogenetic analyzes confirmed the identity of the partial sequences of the cox2 mtDNA gene for adult specimens of S. paggiae. This study contributes to our understanding of the distribution of different of anisakids in K. sima and about the gastric lesions associated with these nematodes, in addition to expanding the knowledge about the occurrence of this aquatic mammal recorded for the first time in the northern region of Brazil.

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来源期刊

International Journal for Parasitology-Parasites and Wildlife Medicine-Infectious Diseases

CiteScore

3.80

自引率

5.60%

发文量

113

审稿时长

45 days

期刊介绍： The International Journal for Parasitology: Parasites and Wildlife (IJP-PAW) publishes the results of original research on parasites of all wildlife, invertebrate and vertebrate. This includes free-ranging, wild populations, as well as captive wildlife, semi-domesticated species (e.g. reindeer) and farmed populations of recently domesticated or wild-captured species (e.g. cultured fishes). Articles on all aspects of wildlife parasitology are welcomed including taxonomy, biodiversity and distribution, ecology and epidemiology, population biology and host-parasite relationships. The impact of parasites on the health and conservation of wildlife is seen as an important area covered by the journal especially the potential role of environmental factors, for example climate. Also important to the journal is ''one health'' and the nature of interactions between wildlife, people and domestic animals, including disease emergence and zoonoses.