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Mutualists and anta...
Mutualists and antagonists mediate frequency-dependent selection on floral display
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- Toräng, Per (författare)
- Uppsala universitet,Ekologisk botanik
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Ehrlén, Johan (författare)
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- Ågren, Jon (författare)
- Uppsala universitet,Ekologisk botanik
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(creator_code:org_t)
- Wiley, 2008
- 2008
- Engelska.
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Ingår i: Ecology. - : Wiley. - 0012-9658 .- 1939-9170. ; 89:6, s. 1564-1572
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Theory predicts that, with conflicting selection pressures mediated by mutualists and antagonists, alternative reproductive strategies can be maintained by negative frequency-dependent selection if it results in rare-morph advantage. We combined field experiments and surveys of natural populations to determine whether selection on. oral display is frequency dependent in the self-incompatible herb Primula farinosa, which is polymorphic for inflorescence height and occurs in a short-scaped and a long-scaped morph. Among short-scaped plants, both pollination success, quantified as initiation of fruits and seeds, and seed predation were positively correlated with the relative frequency of the long-scaped morph. The relative strength of these effects and the direction of the resulting frequency-dependent selection on scape morph varied among years and populations. The results suggest that both mutualists and antagonists may mediate frequency-dependent selection and that frequency dependence may vary from positive to negative with rare-morph advantage, depending on the relative strength of these interactions.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- alternative reproductive strategies
- facilitation
- floral display
- frequency-dependent selection
- genetic diversity
- pollination
- positive interactions
- predation
- Primula farinosa
- Sweden
- Terrestrial ecology
- Terrestrisk ekologi
- Ecological Botany
- Ekologisk botanik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Ecology
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