Abstract:
:Sex ratio evolution relies on genetic variation in either the phenotypic traits that influence sex ratios or sex-determining mechanisms. However, consistent variation among females in offspring sex ratio is rarely investigated. Here, we show that female painted dragons (Ctenophorus pictus) have highly repeatable sex ratios among clutches within years. A consistent effect of female identity could represent stable phenotypic differences among females or genetic variation in sex-determining mechanisms. Sex ratios were not correlated with female size, body condition or coloration. Furthermore, sex ratios were not influenced by incubation temperature. However, the variation among females resulted in female-biased mean population sex ratios at hatching both within and among years.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Uller T,Mott B,Odierna G,Olsson Mdoi
10.1098/rsbl.2006.0526subject
Has Abstractpub_date
2006-12-22 00:00:00pages
569-72issue
4eissn
1744-9561issn
1744-957Xpii
36825W24X4G14007journal_volume
2pub_type
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