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- W2897099452 abstract "Heritable variation in, and genetic correlations among, traits determine the response of multivariate phenotypes to natural selection. However, as traits develop over ontogeny, patterns of genetic (co)variation and integration captured by the G matrix may also change. Despite this, few studies have investigated how genetic parameters underpinning multivariate phenotypes change as animals pass through major life history stages. Here, using a self-fertilizing hermaphroditic fish species, mangrove rivulus (Kryptolebias marmoratus), we test the hypothesis that G changes from hatching through reproductive maturation. We also test Cheverud's conjecture by asking whether phenotypic patterns provide an acceptable surrogate for patterns of genetic (co)variation within and across ontogenetic stages. For a set of morphological traits linked to locomotor (jumping) performance, we find that the overall level of genetic integration (as measured by the mean-squared correlation across all traits) does not change significantly over ontogeny. However, we also find evidence that some trait-specific genetic variances and pairwise genetic correlations do change. Ontogenetic changes in G indicate the presence of genetic variance for developmental processes themselves, while also suggesting that any genetic constraints on morphological evolution may be age-dependent. Phenotypic correlations closely resembled genetic correlations at each stage in ontogeny. Thus, our results are consistent with the premise that-at least under common environment conditions-phenotypic correlations can be a good substitute for genetic correlations in studies of multivariate developmental evolution." @default.
- W2897099452 created "2018-10-26" @default.
- W2897099452 creator A5022667948 @default.
- W2897099452 creator A5038669428 @default.
- W2897099452 creator A5063752272 @default.
- W2897099452 creator A5071157834 @default.
- W2897099452 date "2018-10-16" @default.
- W2897099452 modified "2023-10-10" @default.
- W2897099452 title "Development of G: a test in an amphibious fish" @default.
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- W2897099452 doi "https://doi.org/10.1038/s41437-018-0152-4" @default.
- W2897099452 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6461753" @default.
- W2897099452 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30327484" @default.
- W2897099452 hasPublicationYear "2018" @default.
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