Journal of Environment and Sociobiology

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Monthly Variations in Feeding Intensity and Food Spectrum of Tilapia niloticus (Linneaus) in Relation to Biological Indices


Affiliations
1 Dept. of Fishery Biology & Resources Management, West Bengal University of Animal and Fishery Sciences, 5, Budherhat Road, Panchasayar, Koikata-700094, India
     

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Dynamics of biological indices such as relative condition factor, Gastrosomatic index (GaSI) and Hepatosomalic index (HSI) as well as food spectrum of Tilapia niloiiciis was monitored for a period of one year in fishes procured from Nadia and, North and South 24 Parganas districts of West Bengal. A significant variation (P < 0.01) was observed in GaSI and HSI values among males and females. The GaSI was found to be positively correlated with feeding intensity and HSI. Blue green algae, green algae and decayed organic matter constituted the major components of food items in different months exhibiting wide variations.

Keywords

Tilapia Itiloticiis, Condition Factor, Feeding Intensity, Food Spectrum.
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  • Monthly Variations in Feeding Intensity and Food Spectrum of Tilapia niloticus (Linneaus) in Relation to Biological Indices

Abstract Views: 309  |  PDF Views: 0

Authors

A. Dey
Dept. of Fishery Biology & Resources Management, West Bengal University of Animal and Fishery Sciences, 5, Budherhat Road, Panchasayar, Koikata-700094, India
S. K. Das
Dept. of Fishery Biology & Resources Management, West Bengal University of Animal and Fishery Sciences, 5, Budherhat Road, Panchasayar, Koikata-700094, India

Abstract


Dynamics of biological indices such as relative condition factor, Gastrosomatic index (GaSI) and Hepatosomalic index (HSI) as well as food spectrum of Tilapia niloiiciis was monitored for a period of one year in fishes procured from Nadia and, North and South 24 Parganas districts of West Bengal. A significant variation (P < 0.01) was observed in GaSI and HSI values among males and females. The GaSI was found to be positively correlated with feeding intensity and HSI. Blue green algae, green algae and decayed organic matter constituted the major components of food items in different months exhibiting wide variations.

Keywords


Tilapia Itiloticiis, Condition Factor, Feeding Intensity, Food Spectrum.