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Proceedings of the Zoological Society

, Volume 67, Issue 1, pp 33–37 | Cite as

Diet Composition and Intensity of Feeding of Tenualosa ilisha (Hamilton, 1822) Occurring in the Northern Bay of Bengal, India

  • Sachinandan Dutta
  • Sourav Maity
  • Subhra Bikash Bhattacharyya
  • Jetendra Kumar Sundaray
  • Sugata Hazra
Research Article

Abstract

Feeding intensity and diet composition of Hilsa Shad (Tenualosa ilisha) from Northern Bay of Bengal were studied between June 2010 and March 2011. The stomach contents of 320 fishes were analyzed from the northern part of the Bay of Bengal to understand the food items of this species. The major constituents of food are organic debris (26.06 ± 5.19 % SD), diatoms (31.22 ± 11.97 % SD), other algae (12.41 ± 2.62 % SD), and crustaceans (3.50 ± 1.28 % SD). The most abundant species of diatoms were Coscinodiscus, Pleurosigma, Bacillaria, Nitzschia, Biddulphia, Diatoma and Asterionella. The stomach of Hilsa was found to be almost empty during June to October while it was almost full during November to March. Significant positive correlation among feeding intensity, chlorophyll-A concentration and salinity of the ambient water indicated that feeding in T. ilisha is influenced by a number of factors. Strong positive correlation between percentage occurrence of diatoms and intensity of feeding indicated their preference for diatom–food.

Keywords

Hilsa Shad Diatoms Stomach content Plankton feeder Physico-chemical factors 

Notes

Acknowledgments

We would like to thank the Indian National Center for Ocean Information Services (INCOIS), Ministry of Earth Science, Government of India for funding the Potential Fishing Zone Validation Project. We also thanks to the field staff Bidhan Chandra Das and all fishermen for their help in sample collection. Special thanks to Abhra Chanda for his kind help to improve the quality of the manuscript.

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Copyright information

© Zoological Society, Kolkata, India 2013

Authors and Affiliations

  • Sachinandan Dutta
    • 1
  • Sourav Maity
    • 1
    • 3
  • Subhra Bikash Bhattacharyya
    • 2
  • Jetendra Kumar Sundaray
    • 2
  • Sugata Hazra
    • 1
  1. 1.School of Oceanographic StudiesJadavpur UniversityKolkataIndia
  2. 2.Kakdwip Research Centre of CIBAKakdwipIndia
  3. 3.Indian National Centre for Ocean Information ServicesHyderabadIndia

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