Article,

Evidence for a chemical arms race between cuckoo wasps of the genus Hedychrum and their distantly related host apoid wasps

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BMC Ecology and Evolution, 22 (1): 138-- (2022)
DOI: 10.1186/s12862-022-02093-8

Abstract

Brood parasites can exert strong selection pressure on their hosts. Many brood parasites escape their detection by mimicking sensory cues of their hosts. However, there is little evidence whether or not the hosts are able to escape the parasites’ mimicry by changing these cues. We addressed this question by analyzing cuticular hydrocarbon (CHC) profiles of Cerceris and Philanthus wasps and their brood parasites, cuckoo wasps mimicking the CHC profiles of their hosts. Some of these hosts use hydrocarbons to preserve their prey against fungal infestation and thus, they cannot significantly change their CHC composition in response to chemical mimicry by Hedychrum brood parasites.

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