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首页> 外文期刊>Parasitology >Temporal changes in growth, condition and trophic niche in juvenile Cyprinus carpio infected with a non-native parasite
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Temporal changes in growth, condition and trophic niche in juvenile Cyprinus carpio infected with a non-native parasite

机译：感染了非原生寄生虫的鲤鱼的生长，状况和营养位的时间变化

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摘要

In host-parasite relationships, parasite prevalence and abundance can vary over time, potentially impacting how hosts are affected by infection. Here, the pathology, growth, condition and diet of a juvenile Cyprinus carpio cohort infected with the non-native cestode Bothriocephalus acheilognathi was measured in October 2012 (end of their first summer of life), April 2013 (end of first winter) and October 2013 (end of second summer). Pathology revealed consistent impacts, including severe compression and architectural modification of the intestine. At the end of the first summer, there was no difference in lengths and condition of the infected and uninfected fish. However, at the end of the winter period, the condition of infected fish was significantly reduced and by the end of their second summer, the infected fish were significantly smaller and remained in significantly reduced condition. Their diets were significantly different over time; infected fish consumed significantly higher proportions of food items <53 mu m than uninfected individuals, a likely consequence of impaired functional traits due to infection. Thus, the sub-lethal impacts of this parasite, namely changes in histopathology, growth and trophic niche were dependent on time and/or age of the fish.
机译：在寄主与寄生虫之间的关系中，寄生虫的患病率和丰度会随时间变化，从而可能会影响寄主感染的方式。在这里，分别于2012年10月（生命的第一个夏天结束），2013年4月（第一个冬天的结束）和10月测量了感染了非原生种马尾Both的青少年鲤鱼队列的病理，生长，状况和饮食。 2013（第二个夏天结束）。病理学显示出一致的影响，包括肠道的严重压迫和结构改变。在第一个夏天结束时，受感染和未感染鱼的长度和状况没有差异。然而，在冬季结束时，受感染鱼的状况明显减轻，到第二个夏天结束时，受感染鱼明显变小，并保持明显减少的状态。随着时间的推移，他们的饮食差异显着。与未感染的个体相比，被感染的鱼类消耗的食物<53微米的比例要高得多，这很可能是由于感染导致功能性状受损的结果。因此，该寄生虫的亚致死影响，即组织病理学，生长和营养位的变化取决于鱼的时间和/或年龄。

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