Phenotypic integration and conserved covariance structure in calopterygid damselflies

Journal of Evolutionary Biology
F Eroukhmanoff, Erik I Svensson

Abstract

By comparing the phenotypic (P) variance-covariance matrices between closely related taxa or conspecific populations, one can study the outcome of the interplay between selection and developmental constraints in phenotypic evolution. Shared patterns of phenotypic integration are also of interest and might result from similarities in either selection or developmental pathways. We compared P-matrices and phenotypic integration indices between populations and species of the damselfly genus Calopteryx. P(max)-comparisons between parapatric C. splendens populations revealed stronger conserved phenotypic covariance structure than P(max)-comparisons between species, suggesting that divergence in its early stages proceeds along phenotypic lines of least resistance. Within- and among-population correlations in C. splendens were highly concordant, in further support of initial divergence along P(max). Despite some similarities in overall phenotypic integration between C. splendens and C. virgo, these two species only had several P-matrix eigenvectors in common, indicating that after reproductive isolation, divergence has proceeded against P(max).

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May 30, 2013·BMC Evolutionary Biology·M Julian CaleyEdward T Game
Jun 11, 2011·Journal of Evolutionary Biology·S HarrisL B Pettersson
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Oct 3, 2018·Frontiers in Zoology·Svetlana Milošević-ZlatanovićNataša Tomašević Kolarov
Aug 17, 2021·Evolution; International Journal of Organic Evolution·Sabrina RenaudAnne-Béatrice Dufour

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