ENVIRONMENTAL CONDITIONS AFFECT THE MAGNITUDE OF INBREEDING DEPRESSION IN SURVIVAL OF DARWIN'S FINCHES

@article{Keller2002ENVIRONMENTALCA,
  title={ENVIRONMENTAL CONDITIONS AFFECT THE MAGNITUDE OF INBREEDING DEPRESSION IN SURVIVAL OF DARWIN'S FINCHES},
  author={Lukas F. Keller and Peter R. Grant and Barbara Rosemary Grant and Kenneth Petren},
  journal={Evolution},
  year={2002},
  volume={56}
}
Abstract Understanding the fitness consequences of inbreeding (inbreeding depression) is of importance to evolutionary and conservation biology. There is ample evidence for inbreeding depression in captivity, and data from wild populations are accumulating. However, we still lack a good quantitative understanding of inbreeding depression and what influences its magnitude in natural populations. Specifically, the relationship between the magnitude of inbreeding depression and environmental… Expand
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The Environmental Dependence of Inbreeding Depression in a Wild Bird Population
TLDR
It is suggested that inbreeding-by-environment interactions may be substantial in wild populations, when measured across relevant environmental contrasts, although their detection for single traits may require very large samples, or high rates of inbreeding. Expand
Inbreeding and inbreeding depression of early life traits in a cooperative mammal
TLDR
This research provides a rare investigation into inbreeding in a cooperative mammal, revealing high levels of inbreeding, considerable negative consequences and complex interactions with the social environment. Expand
Effects of inbreeding and parental incubation on captive breeding success in Hawaiian crows
TLDR
It is shown that the negative effects of inbreeding on reproductive success should be accounted for even in benign captive environments where survival is maximized and suggests that parental incubation should be favored over artificial incubation in avian captive breeding programs. Expand
INBREEDING AND INTERBREEDING IN DARWIN'S FINCHES
TLDR
It is found that relative fitness of inbred finches is less than one in the 1991 cohorts of both species, and hybridization may enhance fitness to different degrees by counteracting the effects of inbreeding depression, by other additive and nonadditive genetic effects, and by producing phenotypes well suited to exploit particular ecological conditions. Expand
Inbreeding and its avoidance in a wild bird population
TLDR
This thesis demonstrates that inbreeding has deleterious effects on a wild population of birds, occurring throughout an individual’s life, and is of varying strength across environments, and shows that the variation in the strength of inbreeding depression varies across environments. Expand
Inbreeding depression across the lifespan in a wild mammal population
TLDR
Investigating inbreeding depression in a range of life history traits and fitness in a wild population of red deer in Scotland using individual inbreeding coefficients derived from dense Single-Nucleotide Polymorphism (SNP) data finds associations between Fgrm and annual breeding success in both sexes, and between maternal inbreeding coefficient and offspring survival. Expand
Inbreeding depression along a life‐history continuum in the great tit
TLDR
Analysis of the effects of close inbreeding, based on observations of mating between relatives, in a large, free‐living noninsular great tit (Parus major) population monitored over 41’years, shows that inbreeding depression acts independently at each life‐history stage in this population, and suggests that estimates of the fitness costs of inbreeding must focus on the entire life cycle. Expand
Interactive effects of environmental stress and inbreeding on reproductive traits in a wild bird population.
TLDR
Examining the joint effects of inbreeding and environmental stress on four fitness traits that are known to be affected by the inbreeding level of adult birds found that inbreeding depression interacted with environmental stress to reduce hatching success in the nests of inbred females during periods of rain. Expand
Multilocus heterozygosity and inbreeding depression in an insular house sparrow metapopulation
TLDR
H is a good predictor for F in this metapopulation of house sparrows in northern Norway, and an increase in F is likely to be associated with a general increase in the level of homozygosity on loci across the genome, which has severe fitness consequences. Expand
Inbreeding in red-cockaded woodpeckers: Effects of natal dispersal distance and territory location
TLDR
It is demonstrated that inbreeding depression significantly elevated extinction risk in red-cockaded woodpecker populations, and lowering interterritorial distances can be viewed as a valuable conservation tool. Expand
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