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The role of Haldane's rule in sex allocation

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posted on 2023-05-16, 16:34 authored by Olsson, M, Madsen, T, Uller, T, Erik WapstraErik Wapstra, Ujvari, B
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.

History

Publication title

Evolution

Volume

59

Pagination

221-225

ISSN

0014-3820

Department/School

School of Natural Sciences

Publisher

Society Study of Evolution

Place of publication

USA

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the environmental sciences

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