Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species

The phenotypic variance–covariance matrix (P) describes the multivariate distribution of a population in phenotypic space, providing direct insight into the appropriateness of measured traits within the context of multicollinearity (i.e., do they describe any significant variance that is independent...

Full description

Bibliographic Details
Main Authors:	Bertram, Susan M, Fitzsimmons, Lauren P, McAuley, Emily M, Rundle, Howard D, Gorelick, Root
Format:	Online
Language:	English
Published:	Blackwell Publishing Ltd 2012
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3297187/

id	pubmed-3297187
recordtype	oai_dc
spelling	pubmed-32971872012-03-09 Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species Bertram, Susan M Fitzsimmons, Lauren P McAuley, Emily M Rundle, Howard D Gorelick, Root Original Research The phenotypic variance–covariance matrix (P) describes the multivariate distribution of a population in phenotypic space, providing direct insight into the appropriateness of measured traits within the context of multicollinearity (i.e., do they describe any significant variance that is independent of other traits), and whether trait covariances restrict the combinations of phenotypes available to selection. Given the importance of P, it is therefore surprising that phenotypic covariances are seldom jointly analyzed and that the dimensionality of P has rarely been investigated in a rigorous statistical framework. Here, we used a repeated measures approach to quantify P separately for populations of four cricket species using seven acoustic signaling traits thought to enhance mate attraction. P was of full or almost full dimensionality in all four species, indicating that all traits conveyed some information that was independent of the other traits, and that phenotypic trait covariances do not constrain the combinations of signaling traits available to selection. P also differed significantly among species, although the dominant axis of phenotypic variation (pmax) was largely shared among three of the species (Acheta domesticus, Gryllus assimilis, G. texensis), but different in the fourth (G. veletis). In G. veletis and A. domesticus, but not G. assimilis and G. texensis, pmax was correlated with body size, while pmax was not correlated with residual mass (a condition measure) in any of the species. This study reveals the importance of jointly analyzing phenotypic traits. Blackwell Publishing Ltd 2012-01 /pmc/articles/PMC3297187/ /pubmed/22408735 http://dx.doi.org/10.1002/ece3.76 Text en © 2011 The Authors. Published by Blackwell Publishing Ltd. http://creativecommons.org/licenses/by/2.5/ This is an open access article under the terms of the Creative Commons Attribution Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Bertram, Susan M Fitzsimmons, Lauren P McAuley, Emily M Rundle, Howard D Gorelick, Root
spellingShingle	Bertram, Susan M Fitzsimmons, Lauren P McAuley, Emily M Rundle, Howard D Gorelick, Root Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
author_facet	Bertram, Susan M Fitzsimmons, Lauren P McAuley, Emily M Rundle, Howard D Gorelick, Root
author_sort	Bertram, Susan M
title	Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
title_short	Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
title_full	Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
title_fullStr	Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
title_full_unstemmed	Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
title_sort	phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species
description	The phenotypic variance–covariance matrix (P) describes the multivariate distribution of a population in phenotypic space, providing direct insight into the appropriateness of measured traits within the context of multicollinearity (i.e., do they describe any significant variance that is independent of other traits), and whether trait covariances restrict the combinations of phenotypes available to selection. Given the importance of P, it is therefore surprising that phenotypic covariances are seldom jointly analyzed and that the dimensionality of P has rarely been investigated in a rigorous statistical framework. Here, we used a repeated measures approach to quantify P separately for populations of four cricket species using seven acoustic signaling traits thought to enhance mate attraction. P was of full or almost full dimensionality in all four species, indicating that all traits conveyed some information that was independent of the other traits, and that phenotypic trait covariances do not constrain the combinations of signaling traits available to selection. P also differed significantly among species, although the dominant axis of phenotypic variation (pmax) was largely shared among three of the species (Acheta domesticus, Gryllus assimilis, G. texensis), but different in the fourth (G. veletis). In G. veletis and A. domesticus, but not G. assimilis and G. texensis, pmax was correlated with body size, while pmax was not correlated with residual mass (a condition measure) in any of the species. This study reveals the importance of jointly analyzing phenotypic traits.
publisher	Blackwell Publishing Ltd
publishDate	2012
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3297187/
_version_	1611511504415227904

Phenotypic covariance structure and its divergence for acoustic mate attraction signals among four cricket species

Similar Items