Aphyosemion pamaense, a new killifish species (Cyprinodontiformes: Nothobranchiidae) from Cameroon

Publication Type:Journal Article
Year of Publication:2013
Authors:J. - F. Agnèse, Legros, O. , Cazaux, B. , Estivals, G.
Date Published:14-Jun-2013
Type of Article:research article
Keywords:karyotype, molecular phylogeny, sex-chromosomes, Systematics, Taxonomy

Aphyosemion pamaense sp. nov. is described from the Pama River, a small tributary of the Nyong, in the surroundings of Pama, Cameroon. It belongs to the subgenus Chromaphyosemion Radda, 1971 and is distinguished from its relatives by a unique/diagnostic combination of characters: orange unpaired fins, an anal fin without spots, an orange throat and purple to blue-grey flanks. The new species is also genetically differentiated from all the other Chromaphyosemion species as revealed by mtDNA (cytochrome b) analysis and characterised by a unique karyotype showing tentative sex chromosomes with 2n=35 chromosomes in males versus 2n=36 in females.

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