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巴西东北部芒尼姆河流域拟鳄鱧属 cf. affinis（鱧形目，鱧科）和巴西石斧鱼（慈鲷目，慈鲷科）的线虫动物区系。

Nematofauna of Bryconops cf. affinis (Characiformes, Iguanodectidae) and Saxatilia brasiliensis (Cichliformes, Cichlidae) from the Munim River basin, Northeastern Brazil.

机构信息

Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil.

Programa de Pós-graduação em Ciência Animal, Universidade Estadual do Maranhão - UEMA, São Luís, MA, Brasil.

出版信息

Rev Bras Parasitol Vet. 2024 Sep 16;33(3):e011224. doi: 10.1590/S1984-29612024051. eCollection 2024.

DOI:10.1590/S1984-29612024051
PMID:39292069
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11452063/
Abstract

Populations of freshwater species have been declining rapidly and species are becoming extinct. Thus, understanding freshwater species distribution, trends and patterns is required. The Munim River basin is situated in a region with a phytogeographic interface between the Amazon and Cerrado biomes. Although the Munim basin ichthyofauna is currently relatively well-known, data on its helminth fauna is scarce. The present study aimed to characterize the nematofauna of Bryconops cf. affinis (Günther) and Saxatilia brasiliensis (Bloch) from two different localities in the middle section of the Munim River, and thus to contribute to the knowledge of biodiversity in this region. Specimens of Bryconops cf. affinis were parasitized with the nematodes Procamallanus (Spirocamallanus) krameri (Petter, 1974) and "Porrocaecum-like" species (larvae) in both localities. Saxatilia brasiliensis presented the nematodes P. (S.) krameri, Pseudoproleptus sp. (larvae), Cucullanus sp. and Procamallanus sp. (larvae). Procamallanus (S.) krameri was found parasitizing S. brasiliensis only from the Feio stream. Morphometric data and parasitological parameters are given. The present study provides the first record of nematodes for B. cf. affinis and for S. brasiliensis contributing to the knowledge of the helminth fauna of freshwater fishes from locations that have not yet been studied, such as the Munim River basin.

摘要

淡水物种的数量迅速减少，物种正在灭绝。因此，需要了解淡水物种的分布、趋势和模式。Munim 河流域位于亚马逊和塞拉多生物群落之间的植物地理界面的一个区域。尽管 Munim 流域的鱼类区系目前相对较为知名，但有关其寄生虫区系的数据却很少。本研究旨在描述来自 Munim 河中段两个不同地点的 Bryconops cf. affinis (Günther) 和 Saxatilia brasiliensis (Bloch) 的线虫区系，从而为该地区的生物多样性知识做出贡献。在两个地点，Bryconops cf. affinis 标本都被寄生了线虫 Procamallanus (Spirocamallanus) krameri (Petter, 1974) 和“Porrocaecum-like”物种（幼虫）。Saxatilia brasiliensis 则呈现出 P. (S.) krameri、Pseudoproleptus sp. (幼虫)、Cucullanus sp. 和 Procamallanus sp. (幼虫) 等线虫。只有在 Feio 溪流中才发现 P. (S.) krameri 寄生在 S. brasiliensis 身上。给出了形态计量学数据和寄生虫学参数。本研究首次记录了 Bryconops cf. affinis 和 S. brasiliensis 的线虫，为尚未研究过的 Munim 河流域等地区的淡水鱼类寄生虫区系提供了新的认识。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/3d83731868c6/rbpv-33-3-e011224-g05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/e0252925ab46/rbpv-33-3-e011224-g01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/a50f7d8c7010/rbpv-33-3-e011224-g02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/346d162bac5e/rbpv-33-3-e011224-g03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/f2802fd5c61a/rbpv-33-3-e011224-g04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/3d83731868c6/rbpv-33-3-e011224-g05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/e0252925ab46/rbpv-33-3-e011224-g01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/a50f7d8c7010/rbpv-33-3-e011224-g02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/346d162bac5e/rbpv-33-3-e011224-g03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/f2802fd5c61a/rbpv-33-3-e011224-g04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/92da/11452063/3d83731868c6/rbpv-33-3-e011224-g05.jpg

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Mitogenomic phylogenies suggest the resurrection of the subfamily Porrocaecinae and provide insights into the systematics of the superfamily Ascaridoidea (Nematoda: Ascaridomorpha), with the description of a new species of Porrocaecum.线粒体基因组系统发育表明 Porrocaecinae 亚科的复活，并为 Ascaridoidea 超科（线虫纲：Ascaridomorpha）的系统发育提供了见解，描述了一新种 Porrocaecum。
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