ELEFAN Based Population Dynamics of Bombay Duck, Harpadon nehereus Inhabiting the Marine Waters of the West Coast of India

DOI: 10.18805/ijar.B-3867    | Article Id: B-3867 | Page : 1042-1048
Citation :- ELEFAN Based Population Dynamics of Bombay Duck, Harpadon nehereus Inhabiting the Marine Waters of the West Coast of India.Indian Journal Of Animal Research.2020.(54):1042-1048
Fofandi Mahendrakumar, D., Prathibha Rohit fofandimahendra@gmail.com
Address : Central Marine Fisheries Research Institute, Veraval Regional Centre of ICAR-CMFRI, Matsyabhavan, Veraval 362 265, Gujarat, India. 
Submitted Date : 26-06-2019
Accepted Date : 15-10-2019


We studied ELEFAN based population parameters from length-frequency data for Harpadon nehereus collected from different landing centres along the west coast of India. We analyzed the size structure and estimated growth parameters, recruitment, mortality and exploitation rate using FiSAT-II software. The asymptotic length (Lµ = 366 mm), growth coefficient (K = 0.98 year-1), total mortality (Z=3.32 year-1), natural mortality (M=1.6375 year-1), fishing mortality (F=1.6825 year-1), growth performance index (Ø = 3.12) and exploitation ratio (E = 0.51) were worked out for the species. The exploitation ratios were computed as Emax= 0.661, E10= 0.568, E50= 0.345. The length at first capture (Lc50) was estimated at 163.44 mm. The present value of E was found close to appropriate fishing pressure on the stock and a further increase of fishing pressure is not recommended.


Asymptotic Length Bombay duck Population dynamics Recruitment Pattern Y/R


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