Rivault C, Cloarec A
Ethologie-Evolution-Ecologie, Universite de Rennes 1-C.N.R.S. U.M.R. 6552
Anim Behav. 1998 Jan;55(1):177-84. doi: 10.1006/anbe.1997.0628.
Behavioural experiments on gregariousness in larval German cockroaches, Blattella germanica (L.), confirmed that this species deposits an aggregation pheromone by body contact. Choice tests with groups of larvae indicated that they were preferentially attracted to papers conditioned by the odour of their conspecifics, although they were able to aggregate on clean paper in the absence of cockroach odour. Individual larvae were able to recognize the odour of their own population or strain in the absence of conspecifics. The odour was produced and perceived by larvae at all developmental stages. We report, for the first time, experiments comparing the relative attractiveness of odours of strains from different locations: larval cockroaches were able to discriminate and recognize the odour of members of their own strain. Our results showed that different strains have variations of a specific odour. All experimental strains had similar discriminatory capacities and all preferred the odour of their own strain. When larvae were presented with a choice between odours from two unfamiliar strains, they appeared to avoid these odours. Copyright 1998 The Association for the Study of Animal Behaviour.
对德国小蠊（Blattella germanica (L.)）幼虫群居行为的实验证实，该物种通过身体接触分泌聚集信息素。对幼虫群体进行的选择测试表明，它们优先被同种个体气味处理过的纸张所吸引，不过在没有蟑螂气味的情况下，它们也能聚集在干净的纸张上。单个幼虫在没有同种个体的情况下，能够识别自身种群或品系的气味。所有发育阶段的幼虫都会产生并感知这种气味。我们首次报告了比较不同地点品系气味相对吸引力的实验：幼虫能够区分并识别自身品系成员的气味。我们的结果表明，不同品系具有特定气味的差异。所有实验品系都具有相似的辨别能力，并且都更喜欢自身品系的气味。当给幼虫提供来自两种不熟悉品系的气味供其选择时，它们似乎会避开这些气味。版权所有1998年动物行为研究协会。
