Open Access Repository

The role of Handane's rule in sex allocation


Downloads per month over past year

Olsson, M, Madsen, T, Uller, T, Wapstra, E and Ujvari, B 2005 , 'The role of Handane's rule in sex allocation' , Evolution, vol. 59, no. 1 , pp. 221-225 , doi: 10.1111/j.0014-3820.2005.tb00908.x.

[img] PDF
2005_Olsson_et_...pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.


Sex allocation theory predicts that parents should bias their reproductive investments toward the offspring
sex generating the greatest fitness return. When females are the heterogametic sex (e.g., ZW in butterflies, some
lizards, and birds), production of daughters is associated with an increased risk of offspring inviability due to the
expression of paternal, detrimental recessives on the Z chromosome. Thus, daughters should primarily be produced
when mating with partners of high genetic quality. When female sand lizards (Lacerta agilis) mate with genetically
superior males, exhibiting high MHC Class I polymorphism, offspring sex ratios are biased towards daughters, possibly
due to recruitment of more Z-carrying oocytes when females have assessed the genetic quality of their partners. If
our study has general applicability across taxa, it predicts taxon-specific sex allocation effects depending on which
sex is the heterogametic one.

Item Type: Article
Authors/Creators:Olsson, M and Madsen, T and Uller, T and Wapstra, E and Ujvari, B
Keywords: Heterogamety, MHC polymorphism, sex ratio adjustment, sex-specific mortality (daughters)
Journal or Publication Title: Evolution
ISSN: 0014-3820
DOI / ID Number: 10.1111/j.0014-3820.2005.tb00908.x
Additional Information:

The definitive version is available at

Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page