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In the parthenogenetic ant Platythyrea punctata policing behaviour is not expected on relatedness grounds as workers are normally clonemates and thus equally related to all offspring in the colony. Nevertheless, colonies usually contain only a single reproductive and other workers that begin to lay eggs are attacked by their nestmates (‘policing’). We found that those individuals that most actively...
The reproductive biology of social Hymenoptera is characterized by lifelong sperm storage by queens and sperm limitation in males. Both sexes are therefore expected to be especially choosy about their mating partners. In particular, sexuals should avoid sibmating because of the resulting risk of producing sterile diploid male offspring. Colonies of the ant Leptothorax gredleri are specialists of patchy...
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