Polyandry in dragon lizards: inbred paternal genotypes sire fewer offspring

Celine H Frere; Dani Chandrasoma; Martin J Whiting

doi:10.1002/ece3.1447

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Polyandry in dragon lizards: inbred paternal genotypes sire fewer offspring

Journal article

Open access

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Polyandry in dragon lizards: inbred paternal genotypes sire fewer offspring

Celine H Frere, Dani Chandrasoma and Martin J Whiting

Ecology and Evolution, Vol.5(8), pp.1686-1692

2015

DOI: https://doi.org/10.1002/ece3.1447

PMCID: PMC4409416

PMID: 25937911

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Abstract

cryptic female choice

genetic benefits

genotype reconstruction

GERUD

inbreeding

polyandry

reptile

sexual selection

sperm competition

Multiple mating in female animals is something of a paradox because it can either be risky (e.g., higher probability of disease transmission, social costs) or provide substantial fitness benefits (e.g., genetic bet hedging whereby the likeli- hood of reproductive failure is lowered). The genetic relatedness of parental units, particularly in lizards, has rarely been studied in the wild. Here, we examined levels of multiple paternity in Australia's largest agamid lizard, the eastern water dragon (Intellagama lesueurii), and determined whether male reproductive success is best explained by its heterozygosity coefficient or the extent to which it is related to the mother. Female polyandry was the norm: 2/ 22 clutches (9.2%) were sired by three or more fathers, 17/22 (77.2%) were sired by two fathers, and only 3/22 (13.6%) clutches were sired by one father. Moreover, we reconstructed the paternal genotypes for 18 known mother-off- spring clutches and found no evidence that females were favoring less related males or that less related males had higher fitness. However, males with greater heterozygosity sired more offspring. While the postcopulatory mechanisms underlying this pattern are not understood, female water dragons likely repre- sent another example of reproduction through cryptic means (sperm selection/ sperm competition) in a lizard, and through which they may ameliorate the effects of male-driven precopulatory sexual selection.

Details

Title: Polyandry in dragon lizards: inbred paternal genotypes sire fewer offspring
Authors: Celine H Frere (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Dani Chandrasoma (Author) - Macquarie University
Martin J Whiting (Author) - Macquarie University
Publication details: Ecology and Evolution, Vol.5(8), pp.1686-1692
Publisher: John Wiley & Sons Ltd.
Date published: 2015
DOI: 10.1002/ece3.1447
ISSN: 2045-7758
PMID: 25937911; PMC4409416
Copyright note: Copyright © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use,
Organisation Unit: School of Science and Engineering - Legacy; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449388102621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Ecology; Evolutionary Biology

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