Mitochondrial gene sequences useful for species identification of western North Atlantic Ocean sharks

Molecular-based approaches for shark species identification have been driven largely by issues specific to the fishery. In an effort to establish a more comprehensive identification data set, we investigated DNA sequence variation of a 1.4-kb region from the mitochondrial genome covering partial seq...

Full description

Bibliographic Details
Main Authors: Greig, Thomas W., Moore, M. Katherine, Woodley, Cheryl M., Quattro, Joseph M.
Format: Article in Journal/Newspaper
Language:English
Published: 2005
Subjects:
Biology
Ecology
Fisheries
North Atlantic
Online Access:http://hdl.handle.net/1834/26214
Description
Summary:Molecular-based approaches for shark species identification have been driven largely by issues specific to the fishery. In an effort to establish a more comprehensive identification data set, we investigated DNA sequence variation of a 1.4-kb region from the mitochondrial genome covering partial sequences from the 12S rDNA, 16S rDNA, and the complete valine tRNA from 35 shark species from the Atlantic fishery. Generally, within-species variability was low in relation to interspecific divergence because species haloptypes formed monophyletic groups. Phylogeneticanalyses resolved ordinal relationships among Carcharhiniformes and Lamniformes, and revealed supportfor the families Sphyrnidae and Triakidae (within Carcharhiniformes) and Lamnidae and Alopidae (withinLamniformes). The combination of limited intraspecific variability and sufficient between-species divergenceindicates that this locus is suitable for species identification.

Similar Items