Adult survival selection in relation to multilocus heterozygosity and body size in a tropical bird species, the Zenaida dove, Zenaida aurita

Cézilly, Frank; Quinard, Aurélie; Motreuil, Sébastien; Pradel, Roger

doi:10.1007/s00442-015-3466-4

Cited by 9 publications

(10 citation statements)

References 83 publications

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“…In addition to body mass, heterozygosity also positively influenced the survival of female Black Grouse. This is similar to the findings of many other studies where genome-wide heterozygosity and heterozygosity at specific loci have been associated with increased survival in some vertebrate species [mammals (Banks et al 2010;Forcada and Hoffman 2014); fish (Evans et al 2010); birds (Worley et al 2010;Cézilly et al 2016)]. Similar to body size, the relationship between survival and heterozygosity has been mainly found in juveniles (e.g.…”

Section: Discussion Heterozygosity and Fitnesssupporting

confidence: 90%

“…Similar to body size, the relationship between survival and heterozygosity has been mainly found in juveniles (e.g. Bean et al 2004;AcevedoWhitehouse et al 2006;Cohas et al 2009), but there is growing evidence that these effects continue throughout adulthood (Velando et al 2015;Cézilly et al 2016). We do not have data directly linking individual chick mortality and heterozygosity, but it is likely to be significant because of the strong relationship between inbreeding depression and chick mass (Soulsbury et al 2011), which in itself is a major determinant of chick survival (Ludwig et al 2010).…”

Section: Discussion Heterozygosity and Fitnessmentioning

confidence: 99%

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Viability selection creates negative heterozygosity–fitness correlations in female Black Grouse Lyrurus tetrix

Soulsbury

Lebigre

2017

J Ornithol

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There is widespread interest in the relationship between individual genetic diversity and fitness-related traits (heterozygosity-fitness correlations; HFCs). Most studies have found weak continuous increases of fitness with increasing heterozygosity, while negative HFCs have rarely been reported. Negative HFCs are expected in cases of outbreeding depression, but outbreeding is rare in natural populations. Negative HFCs may also arise through viability selection acting on low heterozygosity individuals at an early stage producing a skew in the heterozygosity distribution. We tested this idea using survival and clutch parameters (egg mass, egg volume, chick mass, clutch size) in female Black Grouse Lyrurus tetrix and carried out simulations to determine how survival selection may impact the HFCs measured using clutch parameters. We show that survival is positively related to both individual heterozygosity and female body mass. There was a positive effect of body mass on all clutch parameters, but the selective mortality of females with both low heterozygosity and low body mass led to overrepresentation of high heterozygosity-low body mass females and hence a negative relationship between egg volume and heterozygosity. Using simulated data, we show that survival selection acting on both low body mass and low heterozygosity leads to a skew in the quality of breeding females, resulting in negative HFCs with egg volume. Our results indicate that survival selection can strongly influence the strength and direction of any HFCs that occur later in life and that only an integration of all aspects of individual reproductive investment and reproductive success can enable us to fully understand how heterozygosity can shape individual fitness.Keywords Inbreeding Á Outbreeding Á Neutral loci Á Selective mortality Á Genetic diversity Zusammenfassung Selektion auf Ü berlebensfähigkeit führt bei weiblichen Birkhühnern Lyrurus tetrix zu negativen HFC-Werten

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Section: Discussion Heterozygosity and Fitnesssupporting

confidence: 90%

Section: Discussion Heterozygosity and Fitnessmentioning

confidence: 99%

Viability selection creates negative heterozygosity–fitness correlations in female Black Grouse Lyrurus tetrix

Soulsbury

Lebigre

2017

J Ornithol

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“…Genetic theories of sexual selection predict that most ornamental secondary sexual traits provide reliable indication of the genetic quality of their bearers (Brown , Fromhage et al ). Although direct relationships between coloration and genome‐wide heterozygosity or level of inbreeding have been evidenced in birds (García‐Navas et al , Bolund et al , Ferrer et al ) and neutral locus heterozygosity is known to influence adult survival in our species (Cézilly et al ), we found only moderate evidence for a relationship between plumage coloration and individual heterozygosity in the Zenaida dove. However, ornaments could be linked to other aspects of genetic quality such as MHC diversity (von Schantz et al , Grahn , Dunn et al , Whittingham et al ).…”

Section: Discussioncontrasting

confidence: 78%

Reduced sexual dichromatism, mutual ornamentation, and individual quality in the monogamous Zenaida dove Zenaida aurita

Quinard

Cézilly

Motreuil

et al. 2016

Journal of Avian Biology

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Although variation in plumage coloration is known to occur both between and within sexes, its study remains limited to a few bird families. The Zenaida dove Zenaida aurita is a socially monogamous tropical columbid bird species, characterized by an overall cinnamon‐brownish plumage and structural colorations on the head and neck. The species has been described as sexually dichromatic for plumage, although color differences between males and females are not obvious in the field. We investigated variation in the presumably melanin‐based color of the crown, mantle, breast, and belly, in the iridescent dark‐blue streaks on the head, and in the symmetric iridescent patches on the neck, over the whole spectrum visible to birds. Further, unlike most previous studies, we assessed covariation between plumage color and phenotypic traits in both males and females in relation to the putative signaling function of ornaments. Zenaida doves appeared to be slightly sexually dichromatic for the hue of pigment‐based colored areas, with males being on average more reddish than females. However, this difference was not discernible when considering the avian visual system. Conversely, although the reflectance spectra of iridescent plumage did not significantly differ between sexes in brightness, chroma or spectral position of the peaks, color discrimination analyses showed that individuals should be able to perceive between‐ or within‐sex differences in the color of the iridescent patch. In addition, several color parameters of brown and iridescent feathers were significantly related to territorial status, body condition, wing chord, and, albeit weakly, to individual multilocus heterozygosity. Overall, our results thus suggest that plumage color might be a reliable signal of quality in individuals of both sexes in this species. Further studies are needed to test the potential implication of plumage coloration in mate choice and mating patterns in the Zenaida dove.

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“…Variation in inbreeding, and thus individual heterozygosity, is of particular interest for its relevance to questions related to kin selection, dispersal and conservation, among many others. In the last decade, molecular ecologists have strived to examine inbreeding in natural populations through the use of heterozygosity–fitness correlations (HFCs), utilizing multiple genetic markers to obtain heterozygosity estimates for individuals, and then correlating these metrics to traits of interest such as survival (e.g., Cézilly, Quinard, Motreuil, & Pradel, ) or reproduction (e.g., Townsend & Jamieson, ; Velando, Barros, & Moran, ). Recent analyses utilizing neutral markers, especially microsatellites (e.g., Velando et al., ) or genomewide SNPs (e.g., Huisman, Kruuk, Ellis, Clutton‐Brock, & Pemberton, ), have detected HFCs in a variety of contexts, although a systematic review of HFCs across 61 species found that relationships tend to be weak, albeit with wide variation in reported effect sizes (Chapman, Nakagawa, Coltman, Slate, & Sheldon, ).…”

Section: Introductionmentioning

confidence: 99%

“…C ezilly, Quinard, Motreuil, & Pradel, 2015) or reproduction (e.g., Townsend & Jamieson, 2013;Velando, Barros, & Moran, 2015).…”

mentioning

confidence: 99%

Population demography and heterozygosity–fitness correlations in natural guppy populations: An examination using sexually selected fitness traits

et al. 2017

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Heterozygosity-fitness correlations (HFCs) have been examined in a wide diversity of contexts, and the results are often used to infer the role of inbreeding in natural populations. Although population demography, reflected in population-level genetic parameters such as allelic diversity or identity disequilibrium, is expected to play a role in the emergence and detectability of HFCs, direct comparisons of variation in HFCs across many populations of the same species, with different genetic histories, are rare. Here, we examined the relationship between individual microsatellite heterozygosity and a range of sexually selected traits in 660 male guppies from 22 natural populations in Trinidad. Similar to previous studies, observed HFCs were weak overall. However, variation in HFCs among populations was high for some traits (although these variances were not statistically different from zero). Population-level genetic parameters, specifically genetic diversity levels (number of alleles, observed/expected heterozygosity) and measures of identity disequilibrium (g2 and heterozygosity-heterozygosity correlations), were not associated with variation in population-level HFCs. This latter result indicates that these metrics do not necessarily provide a reliable predictor of HFC effect sizes across populations. Importantly, diversity and identity disequilibrium statistics were not correlated, providing empirical evidence that these metrics capture different essential characteristics of populations. A complex genetic architecture likely underpins multiple fitness traits, including those associated with male fitness, which may have reduced our ability to detect HFCs in guppy populations. Further advances in this field would benefit from additional research to determine the demographic contexts in which HFCs are most likely to occur.

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Adult survival selection in relation to multilocus heterozygosity and body size in a tropical bird species, the Zenaida dove, Zenaida aurita

Cited by 9 publications

References 83 publications

Viability selection creates negative heterozygosity–fitness correlations in female Black Grouse Lyrurus tetrix

Viability selection creates negative heterozygosity–fitness correlations in female Black Grouse Lyrurus tetrix

Reduced sexual dichromatism, mutual ornamentation, and individual quality in the monogamous Zenaida dove Zenaida aurita

Population demography and heterozygosity–fitness correlations in natural guppy populations: An examination using sexually selected fitness traits

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