Age‐dependent genetic effects on a secondary sexual trait in male Alpine ibex, Capra ibex

@article{vonHardenberg2007AgedependentGE,
  title={Age‐dependent genetic effects on a secondary sexual trait in male Alpine ibex, Capra ibex},
  author={Achaz von Hardenberg and Bruno Bassano and Marco Festa‐Bianchet and Gordon Luikart and Paolo Lanfranchi and David W. Coltman},
  journal={Molecular Ecology},
  year={2007},
  volume={16}
}
Secondary sexual traits, such as horns in ungulates, may be good indicators of genetic quality because they are costly to develop. Genetic effects on such traits may be revealed by examining correlations between multilocus heterozygosity (MLH) and trait value. Correlations between MLH and fitness traits, termed heterozygosity–fitness correlations (HFC), may reflect inbreeding depression or associative overdominance of neutral microsatellite loci with loci directly affecting fitness traits. We… 
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The genome‐wideheterozygosity effect seems to explain the observed heterozygosity‐fitness correlation in the alpine marmot, with significant correlations between heterozygosities calculated across single locus or across two sets of eight loci.
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It is shown that HFC studies do not generally reveal patterns predicted by population genetic theory, and are of small effect, and future studies should use more genetic marker data and utilize sampling designs that shed more light on the biological mechanisms that may modulate the strength of association.
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Compared the horn growth patterns in male European mouflon Ovis aries musimon living in different habitats, it is suggested that the differences in the expression of sexually selected traits in the study populations may be influenced by environmental conditions.
Exploring Heterozygosity-Survival Correlations in a Wild Songbird Population: Contrasting Effects between Juvenile and Adult Stages
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Stochastic factors experienced during the first year of life in this long-distance migratory species may have swamped a relationship between heterozygosity and survival up to recruitment.
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TLDR
The purpose of the study was to determine, if there are heterozygosityfitness correlations in the fly Drosophila littoralis and what the mechanism behind possible correlations is and what happens to genetic variation in populations of small size.
Low heterozygosity at microsatellite markers in Iberian red deer with small antlers.
TLDR
It is found that males with very small antlers had lower levels of heterozygosity than those with bigger antlers (significant effect in an analysis of variance, P = 0.011), with implications for red deer evolution and management.
A strong genetic footprint of the re‐introduction history of Alpine ibex (Capra ibex ibex)
TLDR
Overall, a strong footprint of re‐introduction events on contemporary genetic structure is detected, with re‐ Introduction history explaining a substantial part of the genetic differentiation among populations.
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