Universidade Federal do Amapá (UNIFAP), Programa de Pós-Graduação em Biodiversidade Tropical, Departamento de Ciências Biológicas e da Saúde, Rodovia Juscelino Kubitschek Km 2, 68903-419 Macapá, AP, Brazil.
Universidade do Estado do Amapá (UEAP), Avenida Presidente Vargas, 650, 68900-070 Macapá, AP, Brazil.
An Acad Bras Cienc. 2024 Jul 29;96(suppl 1):e20231253. doi: 10.1590/0001-3765202420231253. eCollection 2024.
Fish parasites are an important part of aquatic biodiversity and knowing these species and their interactions with their hosts helps in monitoring the aquatic biota. The present study investigated the ectoparasite crustacean fauna of ten fish species from the upper Araguari River, in the state of Amapá, northern Brazil. A total of 508 fish were collected and analyzed from July to November 2014, of which 82.6% (109) were parasitized by one or more crustacean ectoparasite species. In the ten host fish species, a total of 308 ectoparasite specimens were collected, from 12 taxa, such as Argulus multicolor Stekhoven, 1937, Argulus spinulosus Silva, 1980, Argulus sp.1, Argulus sp.2, Argulus sp.3, Dipteropeltis sp., Dipteropeltis hirundo Calman, 1912, Dolops bidentata Bouvier, 1899, Dolops striata Bouvier, 1899 (Argulidae), Braga fluviatilis Richardson, 1911, Braga amapaensis Thatcher, 1996 (Cymothoidae) and Excorallana berbicensis Boone, 1918 (Corallanidae). Higher levels of prevalence and abundance were recorded for Hoplias aimara (Valenciennes, 1847) and Tometes trilobatus Valenciennes, 1850, respectively. These ectoparasites were found in the fins, integument, mouth, and anus of the host fish. Argulus sp.2 and D. bidentata were the most abundant parasites (65.1%), and had the highest species richness. This study registered 36 novel host-parasite interactions, and thus represents a new record for all host species here examined.
鱼类寄生虫是水生生物多样性的重要组成部分，了解这些物种及其与宿主的相互作用有助于监测水生生物群。本研究调查了巴西北部阿马帕州上阿拉瓜里河的十种鱼类的外寄生虫甲壳动物群。2014 年 7 月至 11 月共采集和分析了 508 条鱼，其中 82.6%（109 条）被一种或多种甲壳类外寄生虫寄生。在十种宿主鱼类中，共采集到 308 个外寄生虫标本，来自 12 个分类群，如彩色鱼虱（Argulus multicolor Stekhoven，1937）、刺鱼虱（Argulus spinulosus Silva，1980）、鱼虱 1 号（Argulus sp.1）、鱼虱 2 号（Argulus sp.2）、鱼虱 3 号（Argulus sp.3）、双翅目幼虫（Dipteropeltis sp.）、燕鱼虱（Dipteropeltis hirundo Calman，1912）、双齿鱼虱（Dolops bidentata Bouvier，1899）、条纹鱼虱（Dolops striata Bouvier，1899）（鱼虱科）、福氏白鲳（Braga fluviatilis Richardson，1911）、阿马帕氏白鲳（Braga amapaensis Thatcher，1996）（Cymothoidae）和博氏棘鱼虱（Excorallana berbicensis Boone，1918）（棘鱼虱科）。Hoplias aimara（Valenciennes，1847）和 Tometes trilobatus Valenciennes，1850 的患病率和丰度较高。这些寄生虫在宿主鱼的鳍、鳞片、口腔和肛门中被发现。鱼虱 2 号和双齿鱼虱是最丰富的寄生虫（65.1%），具有最高的物种丰富度。本研究记录了 36 种新的宿主-寄生虫相互作用，因此代表了所有被检查的宿主物种的新记录。
