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Genetic variation i...
Genetic variation in nuclear and mitochondrial markers supports a large sex difference in lifetime reproductive skew in a lekking species
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- Widemo, Fredrik (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vilt, fisk och miljö,Department of Wildlife, Fish and Environmental Studies
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(creator_code:org_t)
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- 2014-09-03
- 2014
- Engelska.
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Ingår i: Ecology and Evolution. - : Wiley. - 2045-7758. ; 4, s. 3626-3632
- Relaterad länk:
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https://onlinelibrar...
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https://res.slu.se/i...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sex differences in skews of vertebrate lifetime reproductive success are difficult to measure directly. Evolutionary histories of differential skew should be detectable in the genome. For example, male-biased skew should reduce variation in the biparentally inherited genome relative to the maternally inherited genome. We tested this approach in lek-breeding ruff (Class Aves, Philomachus pugnax) by comparing genetic variation of nuclear microsatellites ((n); biparental) versus mitochondrial D-loop sequences ((m); maternal), and conversion to comparable nuclear (N-e) and female (N-ef) effective population size using published ranges of mutation rates for each marker (). We provide a Bayesian method to calculate N-e ((n)=4N(en)) and N-ef ((m)=2N(efm)) using 95% credible intervals (CI) of (n) and (m) as informative priors, and accounting for uncertainty in . In 96 male ruffs from one population, N-e was 97% (79-100%) lower than expected under random mating in an ideal population, where N-e:N-ef=2. This substantially lower autosomal variation represents the first genomic support of strong male reproductive skew in a lekking species.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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