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Shaken not stirred: A molecular contribution to the systematics of genus Mugil (Teleostei, Mugilidae)
Author(s) -
HERAS Sandra,
MALTAGLIATI Ferruccio,
FERNÁNDEZ Maria Victoria,
ROLDÁN María Inés
Publication year - 2016
Publication title -
integrative zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 34
ISSN - 1749-4877
DOI - 10.1111/1749-4877.12173
Subject(s) - mugil , biology , monophyly , lineage (genetic) , genus , zoology , phylogenetic tree , molecular phylogenetics , species complex , systematics , taxon , evolutionary biology , ecology , taxonomy (biology) , clade , fishery , genetics , gene , fish <actinopterygii>
With this work we addressed some molecular systematic issues within the Mugil cephalus species complex. Particular attention was paid to the debated situations of: (i) Mugil liza , occurring in partial sympatry with Mugil cephalus in the northwestern Atlantic, and (ii) Mugil platanus , considered by some authors a synonymy of the former species and distributed in the southwestern Atlantic. We sequenced 79 individuals of a 465‐bp portion of the mitochondrial control region (CR) from 8 western Atlantic and 2 Mediterranean localities. In addition, all CR sequences available from GenBank for the studied taxa were added to our dataset, for a total of 323 individuals. Overall, 229 haplotypes corresponding to 8 divergent monophyletic lineages were detected. Results of phylogenetic analyses were consistent with the occurrence of past speciation events producing the observed lineages. Of these lineages, 7 correspond to cryptic species and one is constituted by M. liza and M. platanus . As a matter of fact, these 2 taxa constitute a single lineage within the M. cephalus species complex. However, individuals of M. liza/M. platanus lineage analyzed by means of the 18 mitochondrial markers available in GenBank exhibited a degree of genetic diversity consistent with highly divergent populations. Of the 8 lineages detected, the Mediterraean one (type locality) corresponds to M. cephalus ; the lineage M. liza/M. platanus should be named M. liza , under the priority principle, and the left 6 lineages need formal description.