Authors: REVELL, L. J.¹; MAHLER, D. L.²; SWEENEY, J. R.³; SOBOTKA, M.⁴; FANCHER, V. E.⁴; LOSOS, J.B.²

Source: Journal of Evolutionary Biology, Volume 23, Number 2, February 2010 , pp. 407-421(15)

Publisher: Wiley-Blackwell

Abstract:

The pattern of genetic variances and covariances among characters, summarized in the additive genetic variance-covariance matrix, G, determines how a population will respond to linear natural selection. However, G itself also evolves in response to selection. In particular, we expect that, over time, G will evolve correspondence with the pattern of multivariate nonlinear natural selection. In this study, we substitute the phenotypic variance-covariance matrix (P) for G to determine if the pattern of multivariate nonlinear selection in a natural population of Anolis cristatellus, an arboreal lizard from Puerto Rico, has influenced the evolution of genetic variances and covariances in this species. Although results varied among our estimates of P and fitness, and among our analytic techniques, we find significant evidence for congruence between nonlinear selection and P, suggesting that natural selection may have influenced the evolution of genetic constraint in this species.

Keywords: Anolis; correlational selection; genetic constraint; G-matrix; natural selection; P-matrix

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1420-9101.2009.01911.x

Affiliations: 1: National Evolutionary Synthesis Center, Duke University, Durham, NC, USA 2: Museum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA 3: Department of Biology, University of Missouri, St. Louis, MO, USA 4: Biology Department, Washington University in St. Louis, St. Louis, MO, USA

Publication date: 2010-02-01

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