Indian Efforts on the Inventorization of Marine Mammal Species for their Conservation and Management

Jayasankar, P and Anoop, B and Rajagopalan, M and Yousuf, K S S M and Reynold, P and Krishnakumar, P K and Afsal, V V and Anoop, A K (2009) Indian Efforts on the Inventorization of Marine Mammal Species for their Conservation and Management. Asian Fisheries Science, 22 . pp. 143-155.

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Abstract

The present study is the first attempt to use molecular tools for identification of marine mammals in India. The objective was to develop a database of genetic sequences for future marine mammal research in addition to confirming the species identity of cetaceans and dugongs using a molecular approach. Partial sequencing of mitochondrial DNA loci was carried out in accidentally caught/stranded specimens of Spinner dolphin (Stenella longirostris), Pantropical spotted dolphin/bridled dolphin (Stenella attenuata), Bottlenose dolphin (Tursiops aduncus), Long-beaked common dolphin (Delphinus capensis), Indopacific humpbacked dolphin (Sousa chinensis), Risso’s dolphin (Grampus griseus), Finless porpoise (Neophocaena phocaenoides), Sperm whale (Physeter macrocephalus), Blue whale (Balaenoptera musculus), Bryde’s whale (Balaenoptera edeni) and Dugong (Dugong dugon). Molecular identification of species was done by phylogenetic reconstruction of the sequences using portals GenBank and DNA Surveillance. Apart from ratifying their morphological identification, the analysis was able to distinguish specimens that otherwise, could not have been identified using conventional approaches. Phylogenetic analysis of the Sousa-Stenella-Tursiops-Delphinus group indicated more or less robust monophyly for all species in this complex, except Delphinus capensis. A sister-group relationship for Sperm whales and Baleen whales was evident, that would place the former closer to the latter than to any other group of toothed whales.

Item Type:Article
Uncontrolled Keywords:Marine Mammal Species; Conservation; Management
Subjects:Marine Fisheries > Conservation
Marine Mammals
Divisions:CMFRI-Cochin > Fishery Extension
ID Code:5695
Deposited By:Arun Surendran
Deposited On:26 Oct 2010 15:01
Last Modified:14 Nov 2011 15:53

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