Morphometric variation of the Herichthys bartoni (Bean, 1892) species group (Teleostei: Cichlidae): How many species comprise H. labridens (Pellegrin, 1903)?

Autor: Omar Mejía, Fabián Pérez-Miranda, Yatzil León-Romero, Eduardo Soto-Galera, Efraín de Luna
Jazyk: angličtina
Předmět:
Zdroj: Neotropical Ichthyology, Vol 13, Iss 1, Pp 61-76
Druh dokumentu: article
ISSN: 1982-0224
DOI: 10.1590/1982-0224-20140067
Popis: Cichlids of the tribe Heroini have long been a source of taxonomical conflict. In particular, the species included in the Herichthys bartoni group have failed to be recovered as monophyletic in different molecular studies. In this paper we use traditional and geometric morphometrics to evaluate morphological variation in the species included in the H. bartoni complex in order to evaluate the number of species it contains. An update of a previously published DNA barcoding study suggests the existence of three genetic clusters that included the six recognized species analyzed in this study, none of them recovered as monophyletic. On the other hand, geometric morphometrics arise as a useful tool to discriminate species due that traditional morphometrics showed a high overlap in the characters analyzed that prevents the proposal of diagnostic characters.
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