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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2019, Vol. 7, Issue 4, Part E

Food and feeding aspect of Irrawaddy dolphin Orcaella brevirostris (Owen in gray, 1866) related to fish abundance


Author(s): Naing Win and Si Si Hla Bu

Abstract: Food and feeding aspects of the Irrawaddy dolphin Orcaella brevirostris (Owen in Gray,1866) was conducted from March 2009 till April 2010, along the Dolphin Protected Area (PA), a segment of Ayeyawady River, stretching from Mingun to Kyaukmyaung, approximately 74 km stretch of water way. Investigation of fish fauna to access the feeds and feeding behaviour of the dolphins revealed a total of 47 fish species confined to 7 orders, 18 families. Fishes of the order Siluriformes (787.22 kg), and Cypriniformes (700.12 kg) were the abundant relative to the whole catch. The lowest weight represented by Osteoglossiformes with 38.19 kg. The stomach contents of dolphins and incidents of the fish remains indicated that dolphins took the soft body parts of the larger species and discarding the harder head region. A total weight of fishes landed in eight villages recorded was highest, from Myayzun, followed by Sein Pan Gone and Hmaw Oo while Zee Gone and Ywa Thar village presented the lowest weight. On seasonal concern, the highest weight of landed fish was 1154.198 kg in March whereas the lowest in December in 2009 year. In 2010 year, the highest weight was recorded in November (3989.312 kg) whereas the lowest in April (198.37 kg).

Pages: 321-326  |  343 Views  15 Downloads

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How to cite this article:
Naing Win, Si Si Hla Bu. Food and feeding aspect of Irrawaddy dolphin Orcaella brevirostris (Owen in gray, 1866) related to fish abundance. Int J Fish Aquat Stud 2019;7(4):321-326.
International Journal of Fisheries and Aquatic Studies