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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Directional selection effects on patterns of phenotypic (co)variation in wild populations

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Author(s):
Assis, A. P. A. ; Patton, J. L. ; Hubbe, A. ; Marroig, G.
Total Authors: 4
Document type: Journal article
Source: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES; v. 283, n. 1843 NOV 30 2016.
Web of Science Citations: 5
Abstract

Phenotypic (co)variation is a prerequisite for evolutionary change, and understanding how (co)variation evolves is of crucial importance to the biological sciences. Theoretical models predict that under directional selection, phenotypic (co)variation should evolve in step with the underlying adaptive landscape, increasing the degree of correlation among co-selected traits as well as the amount of genetic variance in the direction of selection. Whether either of these outcomes occurs in natural populations is an open question and thus an important gap in evolutionary theory. Here, we documented changes in the phenotypic (co)variation structure in two separate natural populations in each of two chipmunk species (Tamias alpinus and T. speciosus) undergoing directional selection. In populations where selection was strongest (those of T. alpinus), we observed changes, at least for one population, in phenotypic (co)variation that matched theoretical expectations, namely an increase of both phenotypic integration and (co)variance in the direction of selection and a re-alignment of the major axis of variation with the selection gradient. (AU)

FAPESP's process: 12/00852-4 - Study of morphological changes and evolutionary processes in the mammal community of the Grinnell project
Grantee:Ana Paula Aprígio Assis
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 12/24937-9 - Xenarthran (Mammalia) cranial evolution: modularity and its evolutionary consequences on the morphological diversification
Grantee:Alex Christian Rohrig Hubbe
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 11/14295-7 - Modularity and its evolutionary consequences
Grantee:Gabriel Henrique Marroig Zambonato
Support Opportunities: Research Projects - Thematic Grants