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首页> 外文期刊>Journal of Parasitology >HOST, MACROHABITAT, AND MICROHABITAT SPECIFICITY IN THE GILL PARASITE AFRODIPLOZOON POLYCOTYLEUS (MONOGENEA)
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HOST, MACROHABITAT, AND MICROHABITAT SPECIFICITY IN THE GILL PARASITE AFRODIPLOZOON POLYCOTYLEUS (MONOGENEA)

机译：ILL虫草磷灰石多菌种（MONOGENEA）中的寄主，宏生境和微生境比值

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摘要

Studies on species of Monogenea have shown that these parasites often infect only a specific host species, genus, or family, and that they attach only to specific sites within hosts. Few studies, however, examine habitat specificity across host and habitat scales. In this study, we focused on host, macrohabitat, and microhabitat specificity in the monogenean diplozoon Afrodiplozoon polycotyleus, a gill parasite of African cyprinid fishes, Barbus spp. We first compared the occurrence of A. polycotyleus among 4 species of Barbus from a single location in the Mpanga River of western Uganda; Barbus neumayeri was the only species infected with the parasite. We then quantified parasite prevalence and mean abundance in B. neumayeri from a series of river and swamp sites in the same drainage, looking for environmental predictors of diplozoon prevalence and abundance over a broad habitat scale. The prevalence and mean abundance of A. polycotyleus on gills of B. neumayeri was highest in the hypoxic swamp habitat, followed by the intermittent stream sites, and faster flowing river sites. Parasite prevalence and mean abundance across habitats were negatively related to both water current and dissolved oxygen concentration. Within hosts, A. polycotyleus was strongly specific among hemibranchs in poorly oxygenated water and was found on arch 2, hemibranch 4 most frequently.
机译：对Monogenea物种的研究表明，这些寄生虫通常仅感染特定的宿主物种，属或科，并且仅附着于宿主内的特定位点。然而，很少有研究在宿主和生境尺度上研究生境特异性。在这项研究中，我们重点研究了单双生双足动物Afrodiplozoon polycotyleus，一种非洲鲤科鱼类g的寄生虫，Barbus spp中的寄主，大生境和微生境特异性。我们首先比较了乌干达西部姆潘加河中单个地点的4种Barbus种中A. polycotyleus的发生情况。 Barbus neumayeri是唯一被寄生虫感染的物种。然后，我们对来自同一河流中一系列河流和沼泽地中的新芽孢杆菌的寄生虫患病率和平均丰度进行了定量分析，以寻找在广泛栖息地范围内双足动物患病率和丰度的环境预测指标。在低氧沼泽生境中，新芽孢杆菌g的多形芽孢杆菌的患病率和平均丰度最高，其次是断续的溪流部位和流动较快的河流部位。跨生境的寄生虫流行率和平均丰度与水流和溶解氧浓度均呈负相关。在寄主内部，多叶拟南芥在低氧的水中的半分支中具有很强的特异性，最常在第2弓，第4分支中发现。

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