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Candidate gene poly...
Candidate gene polymorphisms are linked to dispersive and migratory behaviour : Searching for a mechanism behind the "paradox of the great speciators"
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- Estandia, Andrea (författare)
- Univ Oxford, Edward Grey Inst Field Ornithol, Dept Biol, Oxford, England.
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- Sendell-Price, Ashley T. (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Univ Oxford, Edward Grey Inst Field Ornithol, Dept Biol, Oxford, England
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- Oatley, Graeme (författare)
- Univ Otago, Dept Zool, Dunedin, New Zealand.
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- Robertson, Fiona (författare)
- Univ Otago, Dept Zool, Dunedin, New Zealand.
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- Potvin, Dominique (författare)
- Univ Sunshine Coast, Sch Sci Technol & Engn, Petrie, Qld, Australia.
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- Massaro, Melanie (författare)
- Charles Sturt Univ, Gulbali Inst, Albury, NSW, Australia.;Charles Sturt Univ, Sch Agr Environm & Vet Sci, Albury, NSW, Australia.
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- Robertson, Bruce C. (författare)
- Univ Otago, Dept Zool, Dunedin, New Zealand.
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- Clegg, Sonya M. (författare)
- Univ Oxford, Edward Grey Inst Field Ornithol, Dept Biol, Oxford, England.;Griffith Univ, Ctr Planetary Hlth & Food Secur, Brisbane, Qld, Australia.
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Univ Oxford, Edward Grey Inst Field Ornithol, Dept Biol, Oxford, England Institutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)
- John Wiley & Sons, 2023
- 2023
- Engelska.
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Ingår i: Journal of Evolutionary Biology. - : John Wiley & Sons. - 1010-061X .- 1420-9101. ; 36:10, s. 1503-1516
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Abstract
Ämnesord
Stäng
- The “paradox of the great speciators” has puzzled evolutionary biologists for over half a century. A great speciator requires excellent dispersal propensity to explain its occurrence on multiple islands, but reduced dispersal ability to explain its high number of subspecies. A rapid reduction in dispersal ability is often invoked to solve this apparent paradox, but a proximate mechanism has not been identified yet. Here, we explored the role of six genes linked to migration and animal personality differences (CREB1, CLOCK, ADCYAP1, NPAS2, DRD4, and SERT) in 20 South Pacific populations of silvereye (Zosterops lateralis) that range from highly sedentary to partially migratory, to determine if genetic variation is associated with dispersal propensity and migration. We detected genetic associations in three of the six genes: (i) in a partial migrant population, migrant individuals had longer microsatellite alleles at the CLOCK gene compared to resident individuals from the same population; (ii) CREB1 displayed longer average microsatellite allele lengths in recently colonized island populations (<200 years), compared to evolutionarily older populations. Bayesian broken stick regression models supported a reduction in CREB1 length with time since colonization; and (iii) like CREB1, DRD4 showed differences in polymorphisms between recent and old colonizations but a larger sample is needed to confirm. ADCYAP1, SERT, and NPAS2 were variable but that variation was not associated with dispersal propensity. The association of genetic variants at three genes with migration and dispersal ability in silvereyes provides the impetus for further exploration of genetic mechanisms underlying dispersal shifts, and the prospect of resolving a long‐running evolutionary paradox through a genetic lens.
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)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Nyckelord
- ADCYAP1
- CLOCK
- CREB1
- dispersal
- diversification
- DRD4
- great speciator
- islands
- NPAS2
- Zosterops lateralis
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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