DSpace Repository

Species Ddiversity, Seasonal Variation and Capture Method of Small cCetaceans on the West Coast of Sri Lanka

Show simple item record

dc.contributor.author Ilangakoon, A.D.
dc.contributor.author Ratnasooriya, W.D.
dc.contributor.author Miththapala, S.
dc.date.accessioned 2013-04-05T05:19:33Z
dc.date.available 2013-04-05T05:19:33Z
dc.date.issued 2000
dc.identifier.citation Ilangakoon, A.D., Ratnasooriya, W.D., & Miththapala, S. (2000). Species Ddiversity, Seasonal Variation and Capture Method of Small cCetaceans on the West Coast of Sri Lanka. Vidyodaya Journal of Science, 9, 37-51. en-US
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/986
dc.description.abstract Species diversity, seasonal variation and capture methods were examined, in small cetacean catches and offshore sightings at the fishing sites and adjacent waters of Beruwal a and Negombo, on the west coast of Sri Lanka. from May to October 1994. 325 and 263 individual specimens of 12 and 9 species of small cetaceans (Stenella longirostris, Stenella coeruleoalba; Stenella attenuata, Tursiops truncatus, Grampus griseus, Peponocephala electra, Pseudora crassidens, Feresa attenuata, Kogia breviceps, Kogia simus, Steno bredanensis, Lagenodelphis hosei) were recorded in the landings at Beruwala and Negombo respectively. Offshore sightings contained 114 and 565 individuals, of two species (Stenella longirostris, Tursiops truncatusi off Beruwala and Negombo respectively. Species diversity between sites was not significantly different for the catch but was significant for sightings, while diversity between catch and sightings at each site was significantly different. Seasonal variation was observed in peak catches but there was no clear seasonality for offshore sightings. Capture method did not differ significantly between sites indicating increased harpooning. Many species not sighted offshore were found in catches at both sites, indicating even deep sea stocks of small cetaceans are exposed to threat by fisheries. The finding that intentional harpooning is spreading both in area and extent should be noted and investigated further. en_US
dc.language.iso en en_US
dc.subject Small cetacean en_US
dc.subject Species diversity en_US
dc.subject Seasonal variation en_US
dc.subject Capture method en_US
dc.title Species Ddiversity, Seasonal Variation and Capture Method of Small cCetaceans on the West Coast of Sri Lanka en_US
dc.type Article en_US
dc.date.published 2000


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account