Fernández Maria V, Brugni Norma L, Viozzi Gustavo P, Semenas Liliana
Laboratorio de Parasitología, INIBIOMA (CONICET-Universidad Nacional del Comahue). Quintral 1250, (8400) Bariloche, Argentina.
J Parasitol. 2010 Dec;96(6):1066-71. doi: 10.1645/GE-2380.1. Epub 2010 Aug 16.
Galaxias maculatus (small puyen) is an abundant native fish distributed in lakes and rivers of the Patagonia, and it is the frequent prey of other fishes, fish-eating birds, and mammals. Previous studies have shown that it is parasitized by 33 metazoan species and that the richness and composition of the parasite communities vary between lakes. The aim of the present work was to analyze the relationship between the composition of fish assemblages and the helminth component community structure of G. maculatus . Ten environmentally similar, small, shallow lakes, belonging to the Nahuel Huapi Lake basin, were chosen because of the differences in the native fish assemblages. Parasite community structure in G. maculatus varied according to the fish assemblage of each lake. The presence of the piscivorous fish Percichthys trucha regularly produced variations in the composition and richness at the component and infracommunity levels, as well as the percentage of autogenic parasite species in G. maculatus .
黄斑南乳鱼（小型普延鱼）是一种分布于巴塔哥尼亚湖泊和河流中的数量丰富的本地鱼类，它是其他鱼类、食鱼鸟类和哺乳动物经常捕食的对象。先前的研究表明，它受到33种后生动物物种的寄生，并且寄生虫群落的丰富度和组成在不同湖泊之间存在差异。本研究的目的是分析鱼类群落组成与黄斑南乳鱼蠕虫组成群落结构之间的关系。由于本地鱼类群落存在差异，因此选择了纳韦尔瓦皮湖流域内10个环境相似的小型浅水湖泊。黄斑南乳鱼的寄生虫群落结构因每个湖泊的鱼类群落而异。肉食性鱼类特氏鲈的存在经常导致黄斑南乳鱼在组成群落和亚群落水平上的组成和丰富度以及自生寄生虫物种百分比发生变化。
