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dc.contributor.authorKotiaho, Janne
dc.date.accessioned2021-03-17T08:54:08Z
dc.date.available2021-03-17T08:54:08Z
dc.date.issued1997
dc.identifier.isbn978-951-39-8352-9
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/74668
dc.description.abstractThere are two major theories of sexual selection that both assume female choice of a costly male trait. They differ in respect to how they consider the costs of a trait; Fisherian self-reinforcing theory of sexual selection assumes no condition dependence of the costs, while viability indicator or handicap theory is based on the condition dependent costs of male trait. This thesis concentrates on sexual selection and especially on costs of male sexual signalling. As a study object I have used the wolf spider Hygrolycosa rubrofasciata, in which males court females with an audible drumming signal. The studies were mainly conducted in laboratory but there is also some field data presented. Females of the species actively prefer to mate with the most actively drumming males. Male drumming activity is dependent on male phenotypic condition and it is positively related to male viability. Drumming may serve as a honest indicator of viability since it provokes costs on the drumming males. More actively drumming males suffer increased mortality. This mortality may be due to energetically highly expensive drumming. There is also a possibility for direct predation costs on more actively drumming males. Especially large males suffered high energetic expenditure per mass unit. Under harsh conditions larger males seem to be better surviving suggesting that larger males may have more resources to use than smaller males. This study provides convincing empirical evidence that an viability indicator process based on costly male traits reflecting heritable viability and thus genetic benefits for offspring is involved in the evolution of sexual selection through female choice.en
dc.relation.ispartofseriesBiological Research Reports from the University of Jyväskylä
dc.relation.haspart<b>Artikkeli I:</b> Kotiaho, J. S., Alatalo, R. V., Parri, S., & Mappes, J. (1996). Sexual selection in a wolf spider: male drumming activity, body size and viability. <i>Evolution, 50(5), 1977-1981.</i> DOI: <a href="https://doi.org/10.1111/j.1558-5646.1996.tb03584.x"target="_blank">10.1111/j.1558-5646.1996.tb03584.x </a>
dc.relation.haspart<b>Artikkeli II:</b> Mappes, J., Alatalo, R. V., Kotiaho, J. S., & Parri, S. (1996). Viability costs of condition-dependent sexual male display in a drumming wolf spider. <i>Proceedings of the Royal Society of London, B, 263, 785-789.</i> DOI: <a href="https://doi.org/10.1098/rspb.1996.0117"target="_blank">10.1098/rspb.1996.0117 </a>
dc.relation.haspart<b>Artikkeli III:</b> Kotiaho, J., Alatalo, R. V., Mappes, J., & Parri, S. (1997). Field and laboratory measurements of male sexual signalling and condition in a wolf spider. <i>Manuscript.</i>
dc.relation.haspart<b>Artikkeli IV:</b> Kotiaho, J. S., Alatalo, R. V., Mappes, J., Nielsen, M. G., Parri, S., & Ana, R. (1998). Energetic costs of size and sexual signalling in a wolf spider. <i>Proceedings of the Royal Society of London, ser. B, 265, 2203-09.</i> DOI: <a href="https://doi.org/10.1098/rspb.1998.0560"target="_blank">10.1098/rspb.1998.0560 </a>
dc.relation.haspart<b>Artikkeli V:</b> Mappes, J., Rivero, A., Parri, S., Kotiaho, J. S., & Alatalo, R. V. (1998). Male mating success and risk of predation in a wolf spider: a balance between sexual and natural selection?. <i>Journal of Animal Ecology, 67, 287-291.</i> DOI: <a href="https://doi.org/10.1046/j.1365-2656.1998.00192.x"target="_blank">10.1046/j.1365-2656.1998.00192.x </a>
dc.subjecteläimet
dc.subjecteläinten käyttäytyminen
dc.subjecthämähäkit
dc.subjectrummuttava susihämähäkki
dc.subjectsukupuolielämä
dc.titleSexual selection and costs of sexual signalling in a wolf spider
dc.typeDiss.
dc.identifier.urnURN:ISBN:978-951-39-8352-9
dc.date.digitised2021


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Näytä suppeat kuvailutiedot