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Evaluating the effectiveness of fingerling stocking and ecological perspectives in enhancing fish harvest in a large tropical reservoir of Northern India

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Title Evaluating the effectiveness of fingerling stocking and ecological perspectives in enhancing fish harvest in a large tropical reservoir of Northern India
Not Available
 
Creator Absar Alam
Jeetendra Kumar
Uttam Kumar Sarkar
Dharm Nath Jha
Saket Kumar Srivastava
Vijay Kumar
Basanta Kumar Das
 
Subject Gangetic carp
Stocking
Rihand reservoir
Production potential
Enhancement
Management
India
 
Description Not Available
The present study evaluated the effectiveness of stocking the Gangetic carps, viz. Labeo
catla, Labeo rohita, and Cirrhinus mrigala, in a large tropical reservoir, Uttar Pradesh,
India. Time series data of 22 years (1998 to 2019) on fingerling stocking and fish harvest
were collected from the State Department of Fisheries, Govt of Uttar Pradesh. The average
annual stocking was 36 nos.ha−1 yr−1, and the fingerling stocking size was ranged between
10 and 90 mm total length (TL) with a mean of 30 mm TL. The average fish production
potential of the reservoir was estimated at 77.15 kg ha−1 yr−1. The analysis revealed that
fish yield from the reservoir progressively increased from 75.02 t to 297.39 t with a mean
of 148.82 ± 69.45 t. The regression analysis between the stocking density and yield of
stocked species showed an insignificant relation in the reservoir (R2 = 0.0873, p = 0.2495).
The percentage change in the production of stocked species in comparison with the previous
year was found to be negative for 12 years between 1998 and 2019 indicated an unstable
trend. The finding indicated that low stocking density, very small size at stocking, the
low conversion efficiency of the photosynthetic energy to fish (0.016%), and the dominance
of catfishes were the major causes for the low fish productivity. We suggest greater stocking
density of 500 fingerlings ha−
1 yr−1, stocking of fingerlings (> 100 mm TL), in situ
breeding and rearing in cages and pens, adoption of cage culture technology, and identification
and conservation of the breeding ground of the Gangetic carps to optimize the
management regime in utilizing the production potential of reservoirs vis-a-vis ensuring
livelihood security and sustainability of the fishers.
Keywords Gangetic carp · Stocking · Rihand reservoir · Production potentialNot Available
Not Available
 
Date 2021-08-11T06:36:50Z
2021-08-11T06:36:50Z
2021-01-05
 
Type Research Paper
 
Identifier Alam, A., Kumar, J., Sarkar, U. K., Jha, D. N., Srivastava, S. K., Kumar, V., & Das, B. K. (2021). Evaluating the effectiveness of fingerling stocking and ecological perspectives in enhancing fish harvest in a large tropical reservoir of Northern India. Environment, Development and Sustainability, 1-21.Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/54651
 
Language English
 
Relation Not Available;
 
Publisher Springer