IMPORTANCE OF FUNGI IN THE DIET OF GAMMARUS-PULEX AND ASELLUS-AQUATICUS .1. FEEDING STRATEGIES
IMPORTANCE OF FUNGI IN THE DIET OF GAMMARUS-PULEX AND ASELLUS-AQUATICUS .1. FEEDING STRATEGIES
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DOI：
10.1007/bf00321203
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发表时间：
1993-02-01
期刊：
影响因子：
2.7
通讯作者：
CALOW, P
中科院分区：
文献类型：
--
作者：
GRACA, MAS;MALTBY, L;CALOW, P
本文研究了真菌在淡水食蟹钩虾和水生石螺的营养生物学中的重要性。对饲养试验中使用的叶片的检查表明，而A。aquaticus在叶面刮伤，G.蚤类会咬穿树叶。这两个物种区分真菌菌丝体，真菌殖民和非殖民叶材料，但，虽然A。aquaticus选择性地消耗真菌菌丝，G.蚤状蚤优先取食叶类物质。真菌似乎是A.水生生物量与饵料选择呈正相关。相比之下，对于G.真菌作为叶材料的改性剂似乎更重要。然而，没有显着的相关性之间的食物偏好和任何测量的叶修改。
The importance of fungi in the trophic biology of the freshwater detritivores Gammarus pulex and Asellus aquaticus was investigated. Inspection of leaves used in feeding trials indicated that whereas A. aquaticus scrapes at the leaf surface, G. pulex bites through the leaf material. Both species discriminated between fungal mycelia, fungally colonized and uncolonized leaf material but, although A. aquaticus selectively consumed fungal mycelia, G. pulex fed preferentially on leaf material. Fungi appear to be an important food source for A. aquaticus and selection of food material was positively correlated with fungal biomass. In contrast, for G. pulex, fungi appear to be more important as modifiers of leaf material. However, no significant correlations were found between food preference and any of the leaf modifications measured.