Evolutionary importance of parental care performance, food resources, and direct and indirect genetic effects in a burying beetle

Claudia M Rauter, A. J. Moore

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Indirect genetic effects (IGE) of parental care performance and the direct-indirect covariance contribute substantially to total heritability in domesticated and laboratory mammals. For animals from natural populations empirical estimates of IGE are sparse. Thus, despite recent models relating IGE to evolution, evolutionary interpretations of IGE are limited. To address this deficit, we used a reciprocal cross-fostering breeding design to estimate environmental influences, direct and indirect genetic effects, and direct-indirect genetic covariances in the burying beetle Nicrophorus pustulatus to determine the evolutionary importance of IGE arising from variation in parental care performance. Carrion size positively affected adult mass and time on carrion, but had no effect on total development time. Males were slightly larger than females. For both mass and development, independent of these environmental influences, direct and indirect genetic effects were of moderate magnitude. Total genetic effects explained 36-50% of the phenotypic variance in mass and size and 27-37% of phenotypic variance in development time. Direct-indirect genetic covariances were zero or close to zero. Thus, for both mass and development time, the response to natural selection arising from environmental variation may be accelerated by the presence of IGE in N. pustulatus. The generality of this pattern and the evolutionary significance of IGE arising from parental care awaits further study of natural populations.

Original languageEnglish (US)
Pages (from-to)407-417
Number of pages11
JournalJournal of Evolutionary Biology
Volume15
Issue number3
DOIs
StatePublished - May 27 2002

Fingerprint

parental care
Beetles
beetle
Coleoptera
Food
food
resource
Foster Home Care
Genetic Selection
genetic covariance
carrion
dead animals
Population
Breeding
Mammals
phenotypic variation
genetic effect
Nicrophorus
reciprocal crosses
heritability

Keywords

  • Direct-indirect genetic covariance
  • Heritability
  • Indirect genetic effects
  • Maternal effects
  • Parental care
  • Reciprocal cross-fostering

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

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abstract = "Indirect genetic effects (IGE) of parental care performance and the direct-indirect covariance contribute substantially to total heritability in domesticated and laboratory mammals. For animals from natural populations empirical estimates of IGE are sparse. Thus, despite recent models relating IGE to evolution, evolutionary interpretations of IGE are limited. To address this deficit, we used a reciprocal cross-fostering breeding design to estimate environmental influences, direct and indirect genetic effects, and direct-indirect genetic covariances in the burying beetle Nicrophorus pustulatus to determine the evolutionary importance of IGE arising from variation in parental care performance. Carrion size positively affected adult mass and time on carrion, but had no effect on total development time. Males were slightly larger than females. For both mass and development, independent of these environmental influences, direct and indirect genetic effects were of moderate magnitude. Total genetic effects explained 36-50{\%} of the phenotypic variance in mass and size and 27-37{\%} of phenotypic variance in development time. Direct-indirect genetic covariances were zero or close to zero. Thus, for both mass and development time, the response to natural selection arising from environmental variation may be accelerated by the presence of IGE in N. pustulatus. The generality of this pattern and the evolutionary significance of IGE arising from parental care awaits further study of natural populations.",
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