GEPHE SUMMARY
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Gephebase Gene
Entry Status
Published
GepheID
GP00000776
Main curator
Courtier
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Other Lake Victoria cichlids - shallow waters
Trait State in Taxon B
Neochromis greenwoodi/omnicaeruleus - deep waters
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
-
Synonyms
-
Rank
no rank
Lineage
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eoglossocephalai; Clupeocephala; Euteleosteomorpha; Neoteleostei; Eurypterygia; Ctenosquamata; Acanthomorphata; Euacanthomorphacea; Percomorphaceae; Ovalentaria; Cichlomorphae; Cichliformes; Cichlidae
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
-
Synonyms
Neochromis greenwoodi Seehausen & Bouton, 1998
Rank
species
Lineage
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Eurypterygia; Ctenosquamata; Acanthomorphata; Euacanthomorphacea; Percomorphaceae; Ovalentaria; Cichlomorphae; Cichliformes; Cichlidae; African cichlids; Pseudocrenilabrinae; Haplochromini; Neochromis
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Generic Gene Name
OPN1LW
Synonyms
RCP
String
Sequence Similarities
Belongs to the G-protein coupled receptor 1 family. Opsin subfamily.
GO - Molecular Function
GO:0008020 : G protein-coupled photoreceptor activity
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GO - Biological Process
GO:0007165 : signal transduction
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GO - Cellular Component
GO:0005887 : integral component of plasma membrane
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Presumptive Null
Molecular Type
Aberration Type
SNP Coding Change
Nonsynonymous
Molecular Details of the Mutation
Candidate mutations are CS180A and/or I277C (human LWS/MWS numbering)
Experimental Evidence
Taxon A | Taxon B | Position | |
---|---|---|---|
Codon | - | - | - |
Amino-acid | - | - | - |
Main Reference
Authors
Terai Y; Seehausen O; Sasaki T; Takahashi K; Mizoiri S; Sugawara T; Sato T; Watanabe M; et al.
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Abstract
Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular gene level to our knowledge. Here we demonstrate parallel evolution in two cichlid genera under strong divergent selection in a gene that affects both. Strong divergent natural selection fixed opsin proteins with different predicted light absorbance properties at opposite ends of an environmental gradient. By expressing them and measuring absorbance, we show that the reciprocal fixation adapts populations to divergent light environments. The divergent evolution of the visual system coincides with divergence in male breeding coloration, consistent with incipient ecological by-product speciation.
Additional References
RELATED GEPHE
Related Genes
Related Haplotypes
EXTERNAL LINKS
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