Comparative ecology of Gammarus pulex (L.) and Asellus aquaticus (L.) II: fungal preferences
Comparative ecology of Gammarus pulex (L.) and Asellus aquaticus (L.) II: fungal preferences
复制标题
Gammarus pulex (L.) 和 Asellus Aquaticus (L.) II 的比较生态学：真菌偏好
作者：
M. Graça;L. Maltby;P. Calow
本文通过分析 Gammarus pulex 和 Asellus Aquaticus 的食物偏好，继续探索它们的生态位分化。这两个物种的个体对不同真菌物种定殖的叶盘进行了区分，并对长管孢菌和路邓Heliscus lugdunensis表现出强烈的偏好。真菌偏好与田间真菌的相对丰度不相关，而且群体内的食物偏好存在相当大的差异——无论是个体之间还是同一个人随时间的推移。所有四个研究种群的动物之间的生态位重叠度很高，并且没有证据表明来自同域和异域种群的动物的潜在营养位存在差异。
This paper continues to explore niche differentiation in Gammarus pulex and Asellus aquaticus by analysis of their food preferences. Individuals from both species discriminated between leaf discs colonized by different fungal species and exhibited strong preferences for Anguillospora longissima and Heliscus lugdunensis. Fungal preferences were not correlated with the relative abundance of fungi in the field and there was considerable intra-population variability in food preferences — both between individuals and for the same individual through time. Niche overlap between animals from all four study populations was high and there was no evidence of differences in the potential trophic niches of animals from sympatric and allopatric populations.