• Publications
  • Influence
Comparing G: multivariate analysis of genetic variation in multiple populations
TLDR
A cohesive and general analytical framework for the comparative analysis of G is presented that incorporates and extends current methods with a strong geometrical basis, and describes the application of random skewers, common subspace analysis, the 4th-order genetic covariance tensor and the decomposition of the multivariate breeders equation within a Bayesian framework. Expand
Studying phenotypic evolution using multivariate quantitative genetics
  • K. McGuigan
  • Biology, Medicine
  • Molecular ecology
  • 1 April 2006
TLDR
Current uses of G, the matrix of additive genetic variances and covariances, and problems with the application of these approaches are discussed, and avenues for future research are identified. Expand
ADAPTATION OF RAINBOW FISH TO LAKE AND STREAM HABITATS
TLDR
Replication of muscle and Ucrit phenotypes across same habitat populations within and/or among species was suggestive of adaptation, but the common garden experiment did not confirm a genetic basis to these associations. Expand
Phylogenetic relationships and historical biogeography of melanotaeniid fishes in Australia and New Guinea
Phylogenetic analysis of melanotaeniid mtDNA cytochrome b and tRNA Pro-control region sequence is broadly consistent with the current taxonomy. However, the molecular phylogeny supports the elevationExpand
CRYPTIC GENETIC VARIATION AND BODY SIZE EVOLUTION IN THREESPINE STICKLEBACK
TLDR
It is concluded that oceanic populations harbor the standing genetic variation necessary for the evolution of body size, but that this variation only becomes available to selection upon colonization of a new habitat. Expand
Evolution of sarcomeric myosin heavy chain genes: evidence from fish.
TLDR
The results were consistent with the hypothesis that a multigene family encoded MYH proteins in the ancestral chordate, one gene ancestral to human MYH16 and its homologues and another ancestral to all other vertebrate sarcomeric MYH genes. Expand
The Depletion of Genetic Variance by Sexual Selection
TLDR
It is shown that condition-dependent expression is not sufficient to maintain genetic variance available to sexual selection in multiple male sexually selected traits, and a lack of genetic variance in male traits in the direction of sexual selection may represent a general feature of sexually selected systems, even in the presence of condition- dependent trait expression. Expand
Natural selection stops the evolution of male attractiveness
TLDR
It is demonstrated that a multivariate male trait preferred by Drosophila serrata females can respond to selection and results in the maintenance of male mating success, and suggests that sexual selection is unlikely to cause divergence among natural populations without a concomitant change in natural selection. Expand
An addition to the rainbowfish (Melanotaeniidae) fauna of North Queensland
TLDR
A new Melanotaeniid species is described from 28 specimens collected from the Johnstone River, north Queensland, which has a distinctive colour pattern with a blue-black mid-lateral band and orange margins on vertical scale rows. Expand
Phenotypic Divergence along Lines of Genetic Variance
TLDR
The results suggest that hydrodynamic adaptation in rainbow fish was not directionally constrained by the dominant eigenvector of G, and empirical studies are likely to overestimate the potential for the major eigenvectors of G to directionally constrain adaptive evolution. Expand
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