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Taxonomic assessment of sharks, rays and guitarfishes (Chondrichthyes: Elasmobranchii) from south-eastern Arabia, using the NADH dehydrogenase subunit 2 (NADH2) gene
- Source :
- Zoological Journal of the Linnean Society. 176:399-442
- Publication Year :
- 2015
- Publisher :
- Oxford University Press (OUP), 2015.
-
Abstract
- An 829-bp fragment of the NADH dehydrogenase subunit 2 (NADH2) gene was used to assess the taxonomic status of 1487 elasmobranch specimens, representing 52 putative species. Strong evidence was found for the existence of an undescribed Echinorhinus species and for cryptic speciation within Rhynchobatus djiddensis. The results also provide strong molecular support for the existence of two previously reported, but undescribed, guitarfish species. Potential, but less conclusive, cryptic lineage diversification was also noted in Carcharhinus leucas, Loxodon macrorhinus, Iago omanensis and Gymnura poecilura. A complex situation was found in the genus Himantura, with potentially three distinct lineages evident, one of which is probably an undescribed species, in the H. gerrardi complex. One dasyatid specimen could not be identified, but appears to be closely related to Dasyatis ushiei, while Himantura leoparda and Carcharhinus longimanus are reported from Oman for the first time. The results of the present study also reinforce previously reported geographical divisions within certain putative species, which has important implications for fishery management and conservation. © 2015 The Linnean Society of London
- Subjects :
- 0106 biological sciences
0301 basic medicine
biology
Zoology
Rhynchobatus djiddensis
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Iago omanensis
03 medical and health sciences
Carcharhinus longimanus
030104 developmental biology
Elasmobranchii
Guitarfish
Carcharhinus
Animal Science and Zoology
Loxodon macrorhinus
Himantura
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 00244082
- Volume :
- 176
- Database :
- OpenAIRE
- Journal :
- Zoological Journal of the Linnean Society
- Accession number :
- edsair.doi...........87777380d1a70c6ac0bf397ac0d1a883