alexa Phylogenetic relationships among families of Gadiformes (Teleostei, Paracanthopterygii) based on nuclear and mitochondrial data.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): RoaVarn A, Ort G

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Abstract Phylogenetic hypotheses among Gadiformes fishes at the suborder, family, and subfamily levels are controversial. To address this problem, we analyze nuclear and mitochondrial DNA (mtDNA) sequences for the most extensive taxonomic sampling compiled to date, representing all of the recognized families and subfamilies in the order (except the monotypic family Lyconidae). Our study sampled 117 species from 46 genera, comprising around 20\% of the species described for the order (more than 60\% of all genera in the order) and produced 2740 bp of DNA sequence data for each species. Our analysis was successful in confirming the monophyly of Gadiformes and most of the proposed families for the order, but alternative hypotheses of sister-group relationships among families were poorly resolved. Our results are consistent with dividing Gadiformes into 12 families in three suborders, Muraenolepidoidei, Macrouroidei, and Gadoidei. Muraenolepidoidei contains the single family Muraenolepididae. The suborder Macrouroidei includes at least three families: Macrouridae, Macruronidae and Steindachneriidae. Macrouridae is deeply divided into two well-supported subfamilies: Macrourinae and Bathygadinae, suggesting that Bathygadinae may be ranked at the family level. The suborder Gadoidei includes the families: Merlucciidae, Melanonidae, Euclichthyidae, Gadidae, Ranicipitidae, and Bregmacerotidae. Additionally, Trachyrincinae could be ranked at family level including two subfamilies: Trachyrincinae and Macrouroidinae within Gadoidei. Further taxonomic sampling and sequencing efforts are needed in order to corroborate these relationships. This article was published in Mol Phylogenet Evol and referenced in Journal of Antivirals & Antiretrovirals

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