No seasonal sex-ratio shift despite sex-specific fitness returns of hatching date in a lizard with genotypic sex determination.

Journal article

Sex allocation theory predicts that mothers should adjust their sex-specific reproductive investment in relation to the predicted fitness returns from sons versus daughters. Sex allocation theory has proved to be successful in some invertebrate taxa but data on vertebrates often fail to show the predicted shift in sex ratio or sex-specific resource investment. This is likely to be partly explained by simplistic assumptions of vertebrate life-history and mechanistic constraints, but also becau...

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Authors: Uller, T; Olsson, M

• Publication status: Published
• Journal: Evolution; international journal of organic evolution
• Volume: 60
• Issue: 10
• Pages: 2131-2136
• Publication date: 2006-10-01
• DOI: 10.1111/j.0014-3820.2006.tb01850.x
• EISSN: 1558-5646
• ISSN: 0014-3820
• Language: English
• Keywords: Reproduction; Seasons; Adaptation, Physiological; Sex Determination Processes; Sex Characteristics; Animals; Female; Male; Sex Ratio; Lizards; Biological Evolution; Genotype