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Type: Journal article
Title: Extended alloparental care in the almost solitary bee Exoneurella eremophila (Hymenoptera: Apidae)
Author: Hogendoorn, K.
Watiniasih, N.
Schwarz, Q.
Citation: Behavioral Ecology and Sociobiology, 2001; 50(3):275-282
Publisher: Springer
Issue Date: 2001
ISSN: 0340-5443
Statement of
Katja Hogendoorn, Ni Watiniasih, Michael P. Schwarz
Abstract: The possibility of extending brood care via the overlapping presence of relatively short lived adults could generate advantages that may have been among the selective forces at the origin of eusociality. In this paper we provide evidence for extended brood care through sib-rearing in the arid-zone allodapine bee, Exoneurella eremophila. Solitary females of the overwintered generation generally die before all their offspring have become independent. In a relatively high proportion of nests, a newly eclosed female invests in her siblings while producing her own offspring in the maternal nest. The sex ratio of the first offspring produced by the overwintered female is highly female biased, but the overall sex ratio of the brood is unbiased. This finding supports the prediction of Bull's 'insurance by protogyny' model of a female bias in the first-produced offspring as a strategy by the mother to ensure extended brood care.
Keywords: Assured fitness returns
sex ratio
Rights: © Springer-Verlag 2001
DOI: 10.1007/s002650100357
Appears in Collections:Aurora harvest 6
Wine Science publications

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