The opsin repertoire of Jenynsia onca: a new perspective on gene duplication and divergence in livebearers.

ABSTRACT:

Background

Jenynsia onca, commonly known as the one sided livebearer, is a member of the family Anablepidae. The opsin gene repertoires of J. onca's close relatives, the four-eyed fish (Anableps anableps) and the guppy (Poecilia reticulata), have been characterized and each found to include one unique LWS opsin. Currently, the relationship among LWS paralogs and orthologs in these species are unclear, making it difficult to test the hypotheses that link vision to morphology or life history traits. The phylogenetic signal appears to have been disrupted by gene conversion. Here we have sequenced the opsin genes of J. onca in order to resolve these relationships.

Findings

We identified nine visual opsins; LWS S180r, LWS S180, LWS P180, SWS1, SWS2A, SWS2B, RH1, RH2-1, and RH2-2.

SUBMITTER: Windsor DJ 

PROVIDER: S-EPMC2732921 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature