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首页> 外文期刊>Folia parasitologica >Seasonal occurrence and microhabitat specificity of Paradiplozoon ichthyoxanthon Avenant-Oldewage in Avenant-Oldewage et al., 2014 (Monogenea: Diplozoidae) infecting Labeobarbus aeneus (Burchell) (Teleostei: Cyprinidae) from the Vaal Dam, South Africa: water quality and host size as determining factors?
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Seasonal occurrence and microhabitat specificity of Paradiplozoon ichthyoxanthon Avenant-Oldewage in Avenant-Oldewage et al., 2014 (Monogenea: Diplozoidae) infecting Labeobarbus aeneus (Burchell) (Teleostei: Cyprinidae) from the Vaal Dam, South Africa: water quality and host size as determining factors?

机译：Avenant-Oldewage等人（2014年，Monogenea：Diplozoidae）的副对虾鱼腥黄腐病的季节性发生和微生境特异性感染了南非瓦尔瓦尔大坝的Labeobarbus aeneus（Burchell）（Teleostei：Cyprinidae）：水质和宿主大小确定因素？

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This is the first study detailing the microhabitat specificity of the monogenean parasite, Paradiplozoon ichthyoxanthon Avenant-Oldewage in Avenant-Oldewage et al., 2014. Samples of the monogenean were collected from the gills of the smallmouth yellowfish Labeobarbus aeneus (Burchell) from the Vaal Dam, South Africa, over four seasons with the use of gill nets. Host condition factor fluctuated between the different seasons, with the highest values recorded in summer. Adults and diporpas of P. ichthyoxanthon were found in all four seasons. Adult parasites predominantly infect the first gill arch, whereas diporpas were found on the second and fourth arches. In utero eggs were also found throughout the sampling seasons and their number negatively correlated with the condition factor of the host. The occurrence of adults and diporpas of P. ichthyoxanthon correlated with the size of the host but not the condition factor. Water quality of the study site also had little correlational relationship with the occurrence of the parasites and fluctuations were related to season. The main factor that may drive the microhabitat specificity of P. ichthyoxanthon is the flow of water over the surfaces of the gills and chances of the parasites becoming dislodged. Size of the attachment organs has also been shown to play a role in this specificity, because smaller attachment structures favour stronger holdfast to areas where flow might be stronger compared to larger attachment structures.
机译：这是第一项详细研究单属寄生虫的寄生虫的微生境特异性的研究，Avenant-Oldewage等人在2014年对单双生寄生虫ichthyoxanthon Avenant-Oldewage进行了研究。南非大坝，在四个季节内使用刺网。寄主条件因子在不同季节之间波动，夏季最高。在四个季节中均发现了鱼鳞ox的成虫和成虫。成虫寄生虫主要感染第一个g弓，而第二个和第四个弓形虫则发现了迪波帕斯。在整个采样季节中，子宫内的卵也被发现，并且卵的数量与宿主的条件因子呈负相关。鱼鳞疫霉菌成虫和成虫的发生与宿主的大小有关，但与条件因素无关。研究地点的水质也与寄生虫的发生几乎没有相关关系，并且波动与季节有关。可能导致鱼腥黄腐菌的微生境特异性的主要因素是water表面上的水流以及寄生虫被驱除的可能性。附着器官的大小也已显示出对这种特异性的作用，因为较小的附着结构有利于与较大附着结构相比流动性较强的区域保持牢固。

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