First study on infestation of Excorallana berbicensis (Isopoda: Corallanidae) on six fishes in a reservoir in Brazilian Amazon during dry and rainy seasons
First study on infestation of Excorallana berbicensis (Isopoda: Corallanidae) on six fishes in a reservoir in Brazilian Amazon during dry and rainy seasons
复制标题
DOI：
10.3856/vol43-issue5-fulltext-13
复制
发表时间：
2015-11-01
影响因子：
1
通讯作者：
Tavares-Dias, Marcos
中科院分区：
文献类型：
--
作者：
Gentil-Vasconcelos, Huann Carllo;Tavares-Dias, Marcos
我们分析了在巴西北方阿拉瓜里河流域的一个水库中，在旱季和雨季期间，Excorallana berbicensis对Acestrorhynchus falcirostris，Escheiosus ucayalensis，Geophagus proximus，Hemiodus unimaculatus，Psectrogaster falcata和Serrasalmus gibbus的侵扰水平。对镰形叶甲而言，E.在雨季，柏威夏的数量较多。对于所有研究的物种，寄生虫流行的高峰是在一个月的降雨量最高的，有两个高峰的寄生虫丰度：一个在一个月的降雨量最高的，另一个在一个月的过渡从雨季到旱季。在这些宿主中，约70%的E. berbicensis标本是在雨季采集的。宿主的身体状况也没有受到任何季节性影响。尽管在季节性降雨量的差异，有没有在透明度，浊度，pH值，电导率，温度和溶解氧水平在水中的波动，由于这些参数的稳定性在这个人工亚马逊生态系统的季节性周期的调查。这是第一份关于E.与鱼有关的柏柏西水母。
We analyzed the infestation levels of Excorallana berbicensis on Acestrorhynchus falcirostris, Ageneiosus ucayalensis, Geophagus proximus, Hemiodus unimaculatus, Psectrogaster falcata and Serrasalmus gibbus in a reservoir in the Araguari River basin, northern Brazil, during the dry and rainy seasons. For P. falcata, the infestation levels due to E. berbicensis were greater during the rainy season. For all the species studied, the peak parasite prevalence was in the month of highest rainfall levels and there were two peaks of parasite abundance: one in the month with highest rainfall level and the other in the month of transition from the rainy season to the dry season. In these hosts, around 70% of the E. berbicensis specimens were collected during the rainy season. The body conditions of the hosts also did not suffer any seasonal influence. Despite the differences in seasonal rainfall levels, there was no fluctuation in transparency, turbidity, pH, electric conductivity, temperature and dissolved oxygen levels in the water, due to the stability of these parameters during the seasonal cycle investigated in this artificial Amazon ecosystem. This was the first report on the seasonality of infestation by E. berbicensis associated with fish.