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Tytuł pozycji:

Individual repeatability and heritability of divorce in a wild population.

Tytuł :
Individual repeatability and heritability of divorce in a wild population.
Autorzy :
Germain RR; School of Biological Sciences, University of Aberdeen, Aberdeen, UK .
Wolak ME; School of Biological Sciences, University of Aberdeen, Aberdeen, UK .
Reid JM; School of Biological Sciences, University of Aberdeen, Aberdeen, UK.
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Źródło :
Biology letters [Biol Lett] 2018 Jun; Vol. 14 (6).
Typ publikacji :
Journal Article; Research Support, Non-U.S. Gov't
Język :
English
Imprint Name(s) :
Original Publication: London : The Royal Society, 2005-
MeSH Terms :
Genetic Variation*
Pair Bond*
Sexual Behavior, Animal*
Sparrows/*genetics
Animals ; Biological Evolution ; Female ; Male ; Quantitative Trait, Heritable ; Sex Characteristics ; Sparrows/physiology
References :
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Contributed Indexing :
Keywords: indirect genetic effects*; mating system evolution*; quantitative genetics*; social monogamy*
Molecular Sequence :
figshare 10.6084/m9.figshare.c.4111487
Entry Date(s) :
Date Created: 20180615 Date Completed: 20190827 Latest Revision: 20190827
Update Code :
20210623
PubMed Central ID :
PMC6030595
DOI :
10.1098/rsbl.2018.0061
PMID :
29899127
Czasopismo naukowe
Understanding micro-evolutionary responses of mating systems to contemporary selection requires estimating sex-specific additive genetic variances and cross-sex genetic covariances in key reproductive strategy traits. One key trait comprises the occurrence of divorce versus mate fidelity across sequential reproductive attempts. If divorce represents an evolving behavioural strategy that responds to selection it must have non-zero individual repeatability and heritability, but quantitative estimates from wild populations are scarce. We used 39 years of individual breeding records and pedigree data from free-living song sparrows ( Melospiza melodia ) to quantify sex-specific permanent individual and additive genetic variances, and hence estimate repeatability and heritability, in liability for divorce. We estimated moderate repeatability among females, but little repeatability among males. Estimates of additive genetic variance were small in both sexes, and the cross-sex genetic covariance was close to zero. Consequently, the total heritability was small but likely non-zero, indicating low potential for micro-evolutionary response to selection. Rapid micro-evolutionary change of divorce rate, therefore, appears unlikely, even if there were substantial fitness benefits of divorce and resulting selection.
(© 2018 The Author(s).)

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