Parallel amino acid replacements in the rhodopsins of the rockfishes (Sebastes spp.) associated with shifts in habitat depth

Sivasundar, Arjun; Palumbi, S.R. (2010). Parallel amino acid replacements in the rhodopsins of the rockfishes (Sebastes spp.) associated with shifts in habitat depth. Journal of Evolutionary Biology, 23(6), pp. 1159-1169. Basel: Wiley 10.1111/j.1420-9101.2010.01977.x

Full text not available from this repository. (Request a copy)

Among various groups of fishes, a shift in peak wavelength sensitivity has been correlated with changes in their photic environments. The genus Sebastes is a radiation of marine fish species that inhabit a wide range of depths from intertidal to over 600 m. We examined 32 species of Sebastes for evidence of adaptive amino acid substitution at the rhodopsin gene. Fourteen amino acid positions were variable among these species. Maximum likelihood analyses identify several of these to be targets of positive selection. None of these correspond to previously identified critical amino acid sites, yet they may in fact be functionally important. The occurrence of independent parallel changes at certain amino acid positions reinforces this idea. Reconstruction of habitat depths of ancestral nodes in the phylogeny suggests that shallow habitats have been colonized independently in different lineages. The evolution of rhodopsin appears to be associated with changes in depth, with accelerated evolution in lineages that have had large changes in depth.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)

UniBE Contributor:

Sivasundar, Arjun

ISSN:

1010-061X

ISBN:

1010-061X

Publisher:

Wiley

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:17

Last Modified:

18 Mar 2014 23:21

Publisher DOI:

10.1111/j.1420-9101.2010.01977.x

Web of Science ID:

000277710100005

URI:

https://boris.unibe.ch/id/eprint/5262 (FactScience: 209998)

Actions (login required)

Edit item Edit item
Provide Feedback