Social biology of the wood-feeding cockroach genus Salganea (Dictyoptera, Blaberidae, Panesthiinae): did ovoviviparity prevent the evolution of eusociality in the lineage?
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Recent phylogenetic studies indicating that termites are eusocial cockroaches closely related to the genus Cryptocercus have generated fresh interest in wood-feeding Blattaria. Here we summarize the social biology of the wood-feeding genus Salganea (Blaberidae: Panesthiinae). As in Cryptocercus, Salganea exhibits long term, biparental care that includes the defense and feeding of young nymphs. Unlike Cryptocercus, however, Salganea is iteroparous: most studied species reproduce periodically over their lifetime. These divergent reproductive strategies are likely related to parental costs associated with their differing reproductive modes: Cryptocercus is oviparous, while Salganea is ovoviviparous. The pattern of parental investment associated with ovoviviparous reproduction may be one reason why Salganea and other ovoviviparous wood-feeding cockroach lineages did not evolve eusociality.
- Social biology of the wood-feeding cockroach genus Salganea (Dictyoptera, Blaberidae, Panesthiinae): did ovoviviparity prevent the evolution of eusociality in the lineage?
Volume 55, Issue 2 , pp 107-114
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- SP Birkhäuser Verlag Basel
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- parental care
- Author Affiliations
- 1. Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
- 2. Faculty of Liberal Arts, The Open University of Japan, Wakaba 2-11, Mihama-ku, Chiba, 261-8586, Japan
- 3. Department of Entomology, North Carolina State University, Raleigh, NC, 27695-7613, USA