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Effects of natural ...
Effects of natural and sexual selection on adaptive population divergence and premating isolation in a damselfly.
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- Svensson, Erik (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science
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- Eroukhmanoff, Fabrice (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science
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- Friberg, Magne (författare)
- Stockholms universitet,Zoologiska institutionen,Evolutionär Ekologi
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(creator_code:org_t)
- The Society for the Study of Evolution, 2006
- 2006
- Engelska.
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Ingår i: Evolution. - : The Society for the Study of Evolution. - 0014-3820 .- 1558-5646. ; 60:6, s. 1242-53
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- The relative strength of different types of directional selection has seldom been compared directly in natural populations. A recent meta-analysis of phenotypic selection studies in natural populations suggested that directional sexual selection may be stronger in magnitude than directional natural selection, although this pattern may have partly been confounded by the different time scales over which selection was estimated. Knowledge about the strength of different types of selection is of general interest for understanding how selective forces affect adaptive population divergence and how they may influence speciation. We studied divergent selection on morphology in parapatric, natural damselfly (Calopteryx splendens) populations. Sexual selection was stronger than natural selection measured on the same traits, irrespective of the time scale over which sexual selection was measured. Visualization of the fitness surfaces indicated that population divergence in overall morphology is more strongly influenced by divergent sexual selection rather than natural selection. Courtship success of experimental immigrant males was lower than that of resident males, indicating incipient sexual isolation between these populations. We conclude that current and strong sexual selection promotes adaptive population divergence in this species and that premating sexual isolation may have arisen as a correlated response to divergent sexual selection. Our results highlight the importance of sexual selection, rather than natural selection in the adaptive radiation of odonates, and supports previous suggestions that divergent sexual selection promotes speciation in this group.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- adaptive ridge
- direct selection
- divergence-with-gene flow
- fitness valley
- indirect selection
- parapatry
- plasticity
- Ethology and behavioural ecology
- Etologi och beteendeekologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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