期刊
ECOLOGICAL ENTOMOLOGY
卷 35, 期 3, 页码 352-359出版社
WILEY
DOI: 10.1111/j.1365-2311.2010.01187.x
关键词
Body size; co-evolution; nest usurpation; Polistes; social parasitism; social wasps
类别
2. We studied host-parasite pairs of Polistes wasps in which the fighting equipment of the parasite's body allows it to enter the host colony. 3. We searched for host morphological traits related to fighting ability that could be considered counter-adaptations. As a host-parasite co-evolutionary arms race can only occur where the two lineages co-exist, we compared morphological traits of hosts belonging to populations with or without parasite pressure. We report that host foundresses belonging to populations under strong parasite pressure have a larger body size than those belonging to populations without parasite pressure. 4. Behavioural experiments carried out to test if an increase in host body size is useful to oppose parasite usurpation show that large body size foundresses exhibit a greater ability of nest defence.
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