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Dietary Preference of Gammarus pulex and Asellus aquaticus during a Laboratory Breeding Programme for Ecotoxicological Studies

机译:在生态毒理学研究实验室育种计划中,γ细豆和水生小球藻的饮食偏好

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摘要

An investigation was undertaken to establish if Gammarus pulex and Asellus aquaticus preferred a diet of unconditioned, artificially or naturally conditioned alder leaves (Alnus glutinosa). Standardised, 24 hour ex situ feeding assays were undertakenwith both species to determine their food preference. The results showed that A. aquaticus ate more leaf material compared to G. pulex (Z 23.909, P 0.001) when exposed to all three test variables. Also, both G. pulex and A. aquaticus demonstrated a preference for naturally conditioned leaves compared to the other two variables, with unconditioned leaves proving the least popular food option for both macroinvertebrates (Z 18.803, P < 0.001). However, both species ate varying amounts of all the leaf treatments (Z 136.399, P < 0.001). Subsequently, the author outlined a feeding methodology for natural alder leaf conditioning that could be used during a laboratory breeding programme.
机译:进行了一项调查,以确定Gammarus pulex和Asellus aquaticus是否偏爱无条件,人工或自然条件的al木(Alnus glutinosa)饮食。对这两种物种进行了标准化的24小时异地饲养试验,以确定它们的食物偏好。结果表明,当暴露于所有三个测试变量时,水生曲霉比水曲霉的叶片材料更多(Z 23.909,P 0.001)。而且,与其他两个变量相比,G。pulex和A. aquaticus均显示出对自然条件下的叶片的偏爱,而非条件下的叶片被证明是两种大型无脊椎动物中最受欢迎的食物选择(Z 18.803,P <0.001)。但是,这两种物种对所有叶片处理的摄入量都不同(Z 136.399,P <0.001)。随后,作者概述了可以在实验室育种计划中使用的天然al木叶调理的喂养方法。

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