Recent sightings of marine mammals in Andaman Islands, India

This study reports opportunistic sightings of marine mammals between August 2013 and January 2014 in the Andaman region.  Seven sightings were recorded during this period out of which one was of a Dugong, which is significant considering its small population size in India and limited data on its distribution and abundance.  The rest were 24 dolphins ( Tursiops sp.).  Four sightings were of the same pod of dolphins on different days at the same location.  Two sightings occurred during regular coral reef monitoring survey and the other five during fishery resource survey by trawling operations.  These sightings are of great significance as there is a lack of studies on marine mammals from the region.  Sighting records are useful for understanding aggregation site, behaviour, habits and habitat and residency patterns and provide important information for conservation of marine mammals.

[1]  S. Venu,et al.  Diversity of Marine Mammals of India—Status, Threats, Conservation Strategies and Future Scope of Research , 2015 .

[2]  T. Alcoverro,et al.  Long-Term Occupancy Trends in a Data-Poor Dugong Population in the Andaman and Nicobar Archipelago , 2013, PloS one.

[3]  R. Jeyabaskaran,et al.  Marine Mammal Species of India , 2012 .

[4]  L. Bejder,et al.  Identification of a resident community of bottlenose dolphins (Tursiops spp.) in the Swan-Canning Estuary, Western Australian, using behavioural information , 2012 .

[5]  Chandra Salgado-Kent,et al.  Identification of a resident community of Bottlenose dolphins ('Tursiops aduncus') in the Swan Canning Riverpark, Western Australia, using behavioural information , 2012 .

[6]  R. Jeyabaskaran,et al.  Occurrence of Killer whale Orcinus orca in Andaman waters , 2011 .

[7]  Ecological studies on the Dugong dugon of the Andaman and Nicobar Islands: A step to species conservation , 2011 .

[8]  E. Vermeulen,et al.  Residency Patterns, Abundance, and Social Composition of Bottlenose Dolphins (Tursiops truncatus) in Bahía San Antonio, Patagonia, Argentina , 2009 .

[9]  Vardhan Patankar,et al.  First underwater sighting and preliminary behavioural observations of Dugongs (Dugong dugon) in the wild from Indian waters, Andaman Islands. , 2009 .

[10]  Vivekanandan,et al.  Molecular Identification of Delphinids and Finless Porpoise (Cetacea) from the Arabian Sea and Bay of Bengal , 2008 .

[11]  M. Webber,et al.  Marine Mammals of the World: A Comprehensive Guide to Their Identification , 2007 .

[12]  D. Lusseau,et al.  Quantifying the influence of sociality on population structure in bottlenose dolphins. , 2006, The Journal of animal ecology.

[13]  Rob Lott GROUP SIZE, SOCIAL ASSOCIATIONS AND RESIDENT PATTERNS OF BOTTLENOSE DOLPHINS (Tursiops truncatus) IN CARDIGAN BAY, WALES. , 2004 .

[14]  P. Hale,et al.  Comparative morphology and distribution of the aduncus and truncatus forms of bottlenose dolphin Tursiops in the Indian and Western Pacific Oceans , 2000 .

[15]  Mark Carwardine Whales, Dolphins and Porpoises , 1992 .

[16]  L. Ballance 13 – Residence Patterns, Group Organization, and Surfacing Associations of Bottlenose Dolphins in Kino Bay, Gulf of California, Mexico , 1990 .

[17]  R W S,et al.  COMPARATIVE MORPHOLOGY. , 1886, Science.