Programa de Pós-graduação em Biodiversidade Tropical- PPGBio, Universidade Federal do Amapá - UNIFAP, Macapá, AP, Brasil.
Universidade do Estado do Amapá - UEAP, Macapá, AP, Brasil.
Rev Bras Parasitol Vet. 2024 Oct 7;33(3):e012724. doi: 10.1590/S1984-29612024063. eCollection 2024.
This study provides the first report of metazoan parasites in Crenicichla strigata. From 31 hosts caught in the Jari River basin, in the eastern Amazon region of Brazil, a total of 1454 parasites were collected: Sciadicleithrum araguariensis, Sciadicleithrum joanae, Sciadicleithrum satanopercae, Posthodiplostomum sp., Genarchella genarchella, Contracaecum sp., Spirocamallanus peraccuratus, Acarina gen. sp. and Dolops geayi. However, the community was dominated by the three species of Sciadicleithrum (Monogenea) and there was similar presence of parasites in the larval and adult stages. The total prevalence was 100% and each of the hosts was parasitized by two or three species, which presented random dispersion. Brillouin diversity, parasite species richness, Berger-Parker dominance index and evenness were low. There was positive correlation between the abundance of Posthodiplostomum sp. the hosts' length, while the abundance of S. peraccuratus showed negative correlation with the body weight of fish. The abundance of S. araguariensis, S. joanae and S. satanopercae showed negative correlation with the hosts' length. The parasite community of C. strigata was characterized by low diversity, low richness, low intensity and low abundance of species.
本研究首次报道了亚马逊河东部贾里河流域的锯盖鱼蚤属寄生虫。从 31 条采集到的锯盖鱼中，共采集到 1454 条寄生虫：阿拉瓜里锯盖鱼蚤、若娜锯盖鱼蚤、撒旦锯盖鱼蚤、后双盘吸虫、瘤胃线虫、异双盘吸虫、短尾旋口线虫、节肢动物属的螨虫和多鳞盘尾线虫。然而，群落主要由三种锯盖鱼蚤（单殖吸虫）组成，幼虫和成虫阶段的寄生虫存在相似的存在。总流行率为 100%，每个宿主被两种或三种寄生虫寄生，呈随机分布。布里渊多样性、寄生虫物种丰富度、伯杰-帕克优势指数和均匀度均较低。后双盘吸虫的丰度与宿主的长度呈正相关，而短尾旋口线虫的丰度与鱼体重量呈负相关。阿拉瓜里锯盖鱼蚤、若娜锯盖鱼蚤和撒旦锯盖鱼蚤的丰度与宿主的长度呈负相关。锯盖鱼的寄生虫群落特征为多样性低、物种丰富度低、强度低、丰度低。
