Evaluation of by-catch discarded fishes during tiger prawn (Penaeus monodon) seed collection in Indian Sundarbans: implication for sustainable management

Document Type : Primary Research paper


1 Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata-700019, West Bengal, India.

2 Department of Zoology, University of Calcutta.

3 West Bengal Biodiversity Board(Department of Environment, Govt. of West Bengal)

4 Department of Zoology, University of Calcutta


Bycatch and discards are the serious problems of the fishing industry driving the reduction of resources and have a negative impact on biodiversity. The diverse biota of the largest delta, mangrove forest Sundarbans is utilized to a large extent as food and livelihood by the stakeholders. Tiger prawn seed collection is a key resource supply of the livelihood for Indian Sundarbans people. In course of the seed collection, assorted samples of non-target juveniles of fish species are destroyed as by-catch due to non -selective fishing gears and push nets. A total of 17 individuals, containing seven orders, ten families, were characterized. The diversity of the fish species ranged between 2.45 and 2.73 with corresponding evenness of 0.93 and 0.98. Among the fish species, the dominant species was Stolephorus dubiosus while Pseudapocryptes elongatus had the lowest abundance in the samples revealed through the non-metric multidimensional scaling (NMDS). Station Kantamari, assessed a most extreme number of prawn seed assortment during July - September, followed by Gosaba and Golabari. This study underscores the need to embrace suitable bycatch decrease gadgets in shrimp fishery, in addition, the requirement of fisheries the board guidelines in request to secure the non-target assets.