Welcome to Spiderlab Aarhus University - Trine Bilde's lab
Evolution of Cooperative Societies – Mating System Evolution – Animal Behaviour
A main aim of our research group is to understand the evolution of group-living and cooperation using social spiders as model system. The social spiders are unique among group living animals, as the transition to permanent sociality is associated with strong inbreeding and highly female-biased sex ratios. Our research aims to understand 1) the ecology and evolution of sociality, 2) reproductive division of labour and conflict resolution, and 3) population consequences of inbreeding. Our research is mainly performed on the genus Stegodyphus that contains both social and subsocial (pre-social) spiders, which makes it ideal for comparative studies. We do field work in South Africa, Nambia, India and Israel.
We study the evolution of polyandrous mating systems and post-copulatory sexual selection for indirect genetic benefits in subsocial Stegodyphus spiders.
We also study sexual selection and male-female co-evolution in the nursery web spider Pisaura mirabilis, where males offer nuptial gifts to females during courtship and mating.
Grinsted L, Pruitt JN, Settepani V, Bilde T. 2013. Individual personalities shape task differentiation in a social spider. Proc R Soc B 280: 20131407
Majer M., Svenning JC., Bilde T. 2013. Habitat productivity constrains the distribution of social spiders across continents -- case study of the genus Stegodyphus. Frontiers in Zoology.10:9.
Grinsted L., Bilde T. 2013. Effects of within-colony competition on body size asymmetries and reproductive skew in a social spider. Journal of Evolutionary Biology. DOI: 10.1111/jeb.12072
Tuni C., Berger-Tal R. 2012. High mortality and female-biased operational sex ratio result in low encounter rates and moderate polyandry in a spider. Biological Journal of the Linnean Society 107: 910-919.
Grinsted L., Agnarsson I., Bilde T. 2012. Subsocial behaviour and brood adoption in mixed-species colonies of two theridiid spiders. Naturwissenschaften doi: 10.1007/s00114-012-0983-4
Albo, MJ, Toft, S., Bilde, T. 2012. Female spiders ignore condition-dependent information from nuptial gift wrapping when choosing mates. Animal Behaviour 84:907-912
Tuni C., Berger-Tal R. 2012. Male preference and female cues: males
assess female sexual maturity and mating status in a web-building
spider. Behavioral Ecology doi: 10.1093/beheco/ars001
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