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Mating system variation and morph fluctuations in a polymorphic lizard

Olsson, Mats ; Healey, Mo ; Wapstra, Erik ; Schwartz, Tonia ; LeBas, Natasha and Uller, Tobias LU (2007) In Molecular Ecology 16(24). p.5307-5315
Abstract
In polymorphic male painted dragon lizards (Ctenophorus pictus), red males win staged contests for females over yellow males, and yellow males have greater success in staged sperm competition trials than red males. This predicts different reproductive strategies in the wild with red males being more coercive or better mate guarders than yellow males. Yellow males would be expected to sire more offspring per copulation and have a greater proportion of offspring from clutches with mixed paternity. However, here we show using microsatellites that the frequency of mixed paternity in the wild is low (< 20% on average across years), that all morphs on average have the same number of offspring sired per year, and that mating system variation... (More)
In polymorphic male painted dragon lizards (Ctenophorus pictus), red males win staged contests for females over yellow males, and yellow males have greater success in staged sperm competition trials than red males. This predicts different reproductive strategies in the wild with red males being more coercive or better mate guarders than yellow males. Yellow males would be expected to sire more offspring per copulation and have a greater proportion of offspring from clutches with mixed paternity. However, here we show using microsatellites that the frequency of mixed paternity in the wild is low (< 20% on average across years), that all morphs on average have the same number of offspring sired per year, and that mating system variation (polyandry vs. monandry) is strongly correlated with perch density on male territories. Furthermore, a logistic regression on male successful vs. unsuccessful mate acquisition showed that red males were under negative selection when they dominated the population, which suggests ongoing frequency dependent selection on male colouration. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Molecular Ecology
volume
16
issue
24
pages
5307 - 5315
publisher
Wiley-Blackwell
external identifiers
  • scopus:37249080672
ISSN
0962-1083
DOI
10.1111/j.1365-294X.2007.03578.x
language
English
LU publication?
no
id
5c8cc36a-80bf-476d-b084-47f4e0db5455 (old id 4731516)
date added to LUP
2016-04-01 11:44:33
date last changed
2022-04-20 21:08:46
@article{5c8cc36a-80bf-476d-b084-47f4e0db5455,
  abstract     = {{In polymorphic male painted dragon lizards (Ctenophorus pictus), red males win staged contests for females over yellow males, and yellow males have greater success in staged sperm competition trials than red males. This predicts different reproductive strategies in the wild with red males being more coercive or better mate guarders than yellow males. Yellow males would be expected to sire more offspring per copulation and have a greater proportion of offspring from clutches with mixed paternity. However, here we show using microsatellites that the frequency of mixed paternity in the wild is low (&lt; 20% on average across years), that all morphs on average have the same number of offspring sired per year, and that mating system variation (polyandry vs. monandry) is strongly correlated with perch density on male territories. Furthermore, a logistic regression on male successful vs. unsuccessful mate acquisition showed that red males were under negative selection when they dominated the population, which suggests ongoing frequency dependent selection on male colouration.}},
  author       = {{Olsson, Mats and Healey, Mo and Wapstra, Erik and Schwartz, Tonia and LeBas, Natasha and Uller, Tobias}},
  issn         = {{0962-1083}},
  language     = {{eng}},
  number       = {{24}},
  pages        = {{5307--5315}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Molecular Ecology}},
  title        = {{Mating system variation and morph fluctuations in a polymorphic lizard}},
  url          = {{http://dx.doi.org/10.1111/j.1365-294X.2007.03578.x}},
  doi          = {{10.1111/j.1365-294X.2007.03578.x}},
  volume       = {{16}},
  year         = {{2007}},
}