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 Naslov prispevka: Jenynsia lineata species complex, revision
UNREAD_POSTObjavljeno: 08. mar 2018 17:34 
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Fasura Amorim, P. (2018): Jenynsia lineata species complex, revision and new species description (Cyprinodontiformes: Anablepidae).

Jenynsia darwini Fasura Amorim, 2018
Journal of Fish Biology, Version of Record online: 7 MAR 2018.

http://onlinelibrary.wiley.com/doi/10.1 ... 13587/full

Abstract
The Jenynsia lineata species complex comprises J. lineata from Montevideo, Uruguay and Jenynsia multidentata, from coastal basins of Brazil, Uruguay and Argentina up to 1200 m a.s.l. Taxonomic divisions within this group were tested using three different species delimitation methods, which found the two existing names to be synonyms and revealed a new cryptic species. Jenynsia darwini sp. nov. is distinguished from all congeners by having a unique combination of character states, including the shape of the dorsal postcleithrum (three times higher than wide v. less than two times higher than wide) and female colour pattern in the half of the caudal peduncle with rows of chromatophores segmented in unaligned spots (v. aligned spots forming lines). The new species also differs from J. lineata by having 26 nucleotide substitutions in the mitochondrial gene cytochrome c oxidase I (coI). Phylogenetic analysis of the genus based on morphological characters proposed by previous studies corroborates monophyly of the subgenera Plesiojenynsia and Jenynsia, with the new species being allocated to the subgenus Jenynsia as the sister group of J. lineata.
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