Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka
March 8-9, 2011, BANGKOK, THAILAND Sri Lanka, in the northern Indian Ocean island, has a relatively narrow continental shelf and an abundance of cetacean fauna in her waters. A few vessel surveys have produced data on cetacean occurrence off the east and west coast but no similar data exists for the...
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ftkyotouniv:oai:repository.kulib.kyoto-u.ac.jp:2433/154047 2023-05-15T15:36:23+02:00 Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka ILANGAKOON, ANOUKCHIKA D. 2012-02 application/pdf http://hdl.handle.net/2433/154047 eng eng Graduate school of Informatics, Kyoto University http://hdl.handle.net/2433/154047 Proceedings of the 7th International Symposium on SEASTAR2000 and Asian Bio-logging Science (The 11th SEASTAR2000 workshop) 23 28 Cetaceans sighting frequency species richness feeding aggregations Sri Lanka Conference Paper 2012 ftkyotouniv 2020-01-10T00:12:43Z March 8-9, 2011, BANGKOK, THAILAND Sri Lanka, in the northern Indian Ocean island, has a relatively narrow continental shelf and an abundance of cetacean fauna in her waters. A few vessel surveys have produced data on cetacean occurrence off the east and west coast but no similar data exists for the south. To fill this data gap vessel-based transects were carried out in 2008/2009 off a selected segment of the south coast. A high sighting rate was recorded and nine species were documented: Balaenoptera musculus, Balaenoptera brydei, Physeter macrocephalus, Stenella longirostris, Tursiops truncates, Pseudorca crassidens, Feresa attenuata, Orcinus orca and Globicephala macrorhynchus. Significantly the first scientifically documented sighting of O. orca anywhere in Sri Lanka's waters was recorded. Additionally blue whale feeding aggregations including mother-calf pairs were documented off southern Sri Lanka in the Austral summer. Mixed species associations involving five species of cetaceans were also recorded. The coastal waters off southern Sri Lanka are therefore an important cetacean habitat with high diversity and mixing of coastal and usually pelagic species. The implications of the importance of the area for blue whales also warrants further study and more detailed studies are recommended to generate data that can inform future management and conservation decisions. Conference Object Balaenoptera musculus Blue whale Orca Orcinus orca Physeter macrocephalus Ocean Island Kyoto University Research Information Repository (KURENAI) Austral Indian |
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Kyoto University Research Information Repository (KURENAI) |
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ftkyotouniv |
language |
English |
topic |
Cetaceans sighting frequency species richness feeding aggregations Sri Lanka |
spellingShingle |
Cetaceans sighting frequency species richness feeding aggregations Sri Lanka ILANGAKOON, ANOUKCHIKA D. Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
topic_facet |
Cetaceans sighting frequency species richness feeding aggregations Sri Lanka |
description |
March 8-9, 2011, BANGKOK, THAILAND Sri Lanka, in the northern Indian Ocean island, has a relatively narrow continental shelf and an abundance of cetacean fauna in her waters. A few vessel surveys have produced data on cetacean occurrence off the east and west coast but no similar data exists for the south. To fill this data gap vessel-based transects were carried out in 2008/2009 off a selected segment of the south coast. A high sighting rate was recorded and nine species were documented: Balaenoptera musculus, Balaenoptera brydei, Physeter macrocephalus, Stenella longirostris, Tursiops truncates, Pseudorca crassidens, Feresa attenuata, Orcinus orca and Globicephala macrorhynchus. Significantly the first scientifically documented sighting of O. orca anywhere in Sri Lanka's waters was recorded. Additionally blue whale feeding aggregations including mother-calf pairs were documented off southern Sri Lanka in the Austral summer. Mixed species associations involving five species of cetaceans were also recorded. The coastal waters off southern Sri Lanka are therefore an important cetacean habitat with high diversity and mixing of coastal and usually pelagic species. The implications of the importance of the area for blue whales also warrants further study and more detailed studies are recommended to generate data that can inform future management and conservation decisions. |
format |
Conference Object |
author |
ILANGAKOON, ANOUKCHIKA D. |
author_facet |
ILANGAKOON, ANOUKCHIKA D. |
author_sort |
ILANGAKOON, ANOUKCHIKA D. |
title |
Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
title_short |
Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
title_full |
Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
title_fullStr |
Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
title_full_unstemmed |
Cetacean Diversity and Mixed-Species Associations off Southern Sri Lanka |
title_sort |
cetacean diversity and mixed-species associations off southern sri lanka |
publisher |
Graduate school of Informatics, Kyoto University |
publishDate |
2012 |
url |
http://hdl.handle.net/2433/154047 |
geographic |
Austral Indian |
geographic_facet |
Austral Indian |
genre |
Balaenoptera musculus Blue whale Orca Orcinus orca Physeter macrocephalus Ocean Island |
genre_facet |
Balaenoptera musculus Blue whale Orca Orcinus orca Physeter macrocephalus Ocean Island |
op_relation |
http://hdl.handle.net/2433/154047 Proceedings of the 7th International Symposium on SEASTAR2000 and Asian Bio-logging Science (The 11th SEASTAR2000 workshop) 23 28 |
_version_ |
1766366727603486720 |