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Feeding and reproductive behaviour of the river catfish Rita rita (Hamilton, 1822) in the river Ganga

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Title Feeding and reproductive behaviour of the river catfish Rita rita (Hamilton, 1822) in the river Ganga
Not Available
 
Creator ABSAR ALAM,
KRIPAL DATT JOSHI
SHYAMAL CHANDRA SUKLA DAS
 
Subject Condition factor, Gonado-somatic index, Maturity, Relative gut length
 
Description Not Available
In the present study, data on food and feeding habits, sex ratio, condition factor, fecundity, maturity stages and
Gonado-somatic index (GSI) of Rita rita were assessed. Samples were collected from the landings centre located on the bank of river Ganga at Allahabad from October 2013 to September 2014. An overall sex ratio (M/F) of 1:0.99 observed was statistically non-significant. Molluscs (49.52% by volume), detritus (41.49%), insects (0.87%) and other miscellaneous food items formed the food of R. rita. In addition to the occurrence of the various food items, small pieces of polythene were found in 3.3% of the total stomachs examined. Food intake was observed to be reduced during the spawning months. However, the condition factor >1 suggested the species to be in good condition throughout the year in both the males and females.The mean relative gut length recorded was 1.6. Fecundity ranged from 21, 066 to 2, 49, 828 with a mean of 79,893 ova. Gonado-somatic index (GSI) was 0.41 to 6.71% and 0.21 to 1.48% for females and males, respectively. Highest monthly GSI in males and females was recorded in the month of July. Higher individual values of GSI along with presence of mature and maturing fishes encountered in the months, May to September showed that R.rita has multiple and prolonged breeding period from May to September with a peak between July and September.
ICAR-Central Inland Fisheries Research Institute
 
Date 2021-08-05T07:25:18Z
2021-08-05T07:25:18Z
June-2016
 
Type Research Paper
 
Identifier 13. Alam, A; Das, S. C. S. and Joshi, K. D., 2016, Feeding and reproductive behaviour of the river catfish Rita rita (Hamilton, 1822) in the river Ganga, India. Indian Journal of Animal Sciences, 86 (6): 736–740
Print ISSN: 0367-8318
http://krishi.icar.gov.in/jspui/handle/123456789/53214
 
Language English
 
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Publisher Not Available