Title: Signature of selection on the rhodopsin gene in the marine radiation of American seven-spined gobies (Gobiidae, Gobiosomatini)
Authors: Larmuseau, Maarten ×
Vanhove, Maarten
Huyse, Tine
Volckaert, Filip
Decorte, Ronny #
Issue Date: 2011
Publisher: Birkhäuser
Series Title: Journal of Evolutionary Biology vol:24 issue:7 pages:1618-1625
Abstract: In comparison to terrestrial and freshwater ecosystems, information about speciation modes and the role of selection in marine environments is scarce. Recent studies have indicated that spectral adaptation could play an important role in the diversification of marine species flocks. Natural selection influences specific amino acids (AAs) which are involved in the spectral tuning mechanism of visual pigment genes. To study the wider occurrence and the characteristics of spectral adaptation in marine radiations, a reinterpretation of the rhodopsin (RH1) data of American seven-spined gobies (genus Elacatinus; Gobiidae; Teleostei) was carried out. Reanalysis revealed that some AAs, which are well-known in the literature as spectral tuning sites, are variable in Elacatinus. Those crucial AA substitutions originated polyphyletically, indicating convergent evolution within the genus Elacatinus. Moreover, statistical tests based on the dN/dS ratio detected selection in several phylogenetic lineages and at specific AAs. Many of these AAs were previously shown to be under selection in other marine radiations. Therefore, the current phylogenetic approach provided an extended list of AAs that are probably involved in spectral tuning, and which should be validated by mutagenic experiments.
ISSN: 1010-061X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Human Genetics - miscellaneous
Laboratory for Animal Biodiversity and Systematics (-)
Ecology, Evolution and Biodiversity Conservation Section
Forensic Biomedical Sciences
× corresponding author
# (joint) last author

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