Please use this identifier to cite or link to this item:
Title: The Quantitative Genetics of Incipient Speciation: Heritability and Genetic Correlations of Skeletal Traits in Populations of Diverging 'Favia Fragum' Ecomorphs
Contributor(s): Carlon, David B (author); Budd, Ann F (author); Lippe, Catherine (author); Andrew, Rose  (author)orcid 
Publication Date: 2011
Open Access: Yes
DOI: 10.1111/j.1558-5646.2011.01389.xOpen Access Link
Handle Link:
Abstract: Recent speciation events provide potential opportunities to understand the microevolution of reproductive isolation. We used a marker-based approach and a common garden to estimate the additive genetic variation in skeletal traits in a system of two ecomorphs within the coral species 'Favia fragum': a Tall ecomorph that is a seagrass specialist, and a Short ecomorph that is most abundant on coral reefs. Considering both ecomorphs, we found significant narrow-sense heritability ('h'²) in a suite of measurements that define corallite architecture, and could partition additive and nonadditive variation for some traits. We found positive genetic correlations for homologous height and length measurements among different types of vertical plates (costosepta) within corallites, but negative correlations between height and length within, as well as between costosepta. Within ecomorphs, 'h'² estimates were generally lower, compared to the combined ecomorph analysis. Marker-based estimates of 'h'² were comparable to broad-sense heritability ('H') obtained from parent offspring regressions in a common garden for most traits, and similar genetic co-variance matrices for common garden and wild populations may indicate relatively small G × E interactions. The patterns of additive genetic variation in this system invite hypotheses of divergent selection or genetic drift as potential evolutionary drivers of reproductive isolation.
Publication Type: Journal Article
Source of Publication: Evolution, 65(12), p. 3428-3447
Publisher: Wiley-Blackwell Publishing Ltd
Place of Publication: United Kingdom
ISSN: 1558-5646
Field of Research (FOR): 060301 Animal Systematics and Taxonomy
060504 Microbial Ecology
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Statistics to Oct 2018: Visitors: 364
Views: 365
Downloads: 0
Appears in Collections:Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record


checked on Nov 26, 2018

Page view(s)

checked on Feb 6, 2019
Google Media

Google ScholarTM



Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.