Early nest emergence of females parasitised by Strepsiptera in protandrous bees (Hymenoptera Andrenidae)

Autor:	Jan Batelka, Jakub Straka, Katerina Rezkova, Lukáš Kratochvíl
Rok vydání:	2011
Předmět:	Strepsiptera Andrena biology Ecology Andrenidae fungi Hymenoptera Mass provisioning biology.organism_classification Nest Stylops Animal Science and Zoology Ecology Evolution Behavior and Systematics Stylopidae
Zdroj:	Ethology Ecology & Evolution. 23:97-109
ISSN:	1828-7131 0394-9370
DOI:	10.1080/03949370.2011.554880
Popis:	Stylopised (= parasitised by Strepsiptera Stylopidae) imagoes of Andrena (Hymenoptera Andrenidae) bees are known to exhibit intersexual morphology. Until now, their abnormal morphology has been thought to result from undernourishment of parasitised larvae during development. This hypothesis, however, dos not fit to mass provisioning Hymenoptera. We hypothesised that induced changes in the suite of morphological characters might be a consequence of manipulation of sex-specific behavioural traits by a strepsipteran parasite. Thus, the masculinised morphology of stylopised females might be connected with shifts in their sexual behaviour. Here, we tested the effect of Stylops (Strepsiptera Stylopidae) infection on the timing of spring nest emergence in Andrena bees, where males generally emerged conspicuously earlier than conspecific females. We used two independent data samplings – pan trapping and direct observation – to avoid possible bias caused by one of the methods. In accordance with our hypothesis, we...
Databáze:	OpenAIRE
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