TY - JOUR
T1 - Interplay between reproduction and age selective harvesting
T2 - A case study of Hilsa (Tenualosa ilisha) fish at Sundarban estuary of northern Bay of Bengal, India
AU - Jana, Debaldev
AU - Dutta, Sachinandan
AU - Samanta, G. P.
N1 - Funding Information:
The authors are grateful to the anonymous referees and Prof. Lansun Chen (Editor-in-Chief) for their careful reading, valuable comments and helpful suggestions, which have helped them to improve the presentation of this work significantly. The second author humbly acknowledge the Science and Engineering Research Board, Department of Science and Technology, Government of India for providing the National Post-Doctoral fellowship (File number: PDF/2016/000640), for conducting the present study.
Publisher Copyright:
© 2019 World Scientific Publishing Company.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - New offspring due to sexual reproduction is not an instantaneous process from its birth, it takes time to be sexually mature. On the other hand, harvesting of commercially profitable fish population before the perfect size or weight is reached is not only a commercial loss but also risks the extinction of the population. Now, we discuss the issue of Ganges-Brahmaputra-Meghna basin, northern Bay of Bengal for the age-selective harvesting of Hilsa shad (Tenualosa ilisha) which lays eggs after its sexual maturation. Harvesting of hilsa before its sexual maturation risks its extinction and due to lamer body weight, it is not a commercially profitable policy. This is a reality of Sundarban estuary for hilsa fish harvesting, therefore, biologically and economically both India and Bangladesh are facing several problems. Empirical data of Frasergunje Fishing Harbor shows a clear picture as the supporting document of this mathematical problem.
AB - New offspring due to sexual reproduction is not an instantaneous process from its birth, it takes time to be sexually mature. On the other hand, harvesting of commercially profitable fish population before the perfect size or weight is reached is not only a commercial loss but also risks the extinction of the population. Now, we discuss the issue of Ganges-Brahmaputra-Meghna basin, northern Bay of Bengal for the age-selective harvesting of Hilsa shad (Tenualosa ilisha) which lays eggs after its sexual maturation. Harvesting of hilsa before its sexual maturation risks its extinction and due to lamer body weight, it is not a commercially profitable policy. This is a reality of Sundarban estuary for hilsa fish harvesting, therefore, biologically and economically both India and Bangladesh are facing several problems. Empirical data of Frasergunje Fishing Harbor shows a clear picture as the supporting document of this mathematical problem.
KW - age selective harvesting
KW - bionomic equilibrium
KW - extinction risk
KW - Maturation delay
KW - MSY
KW - optimal harvesting
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U2 - 10.1142/S1793524519500232
DO - 10.1142/S1793524519500232
M3 - Article
AN - SCOPUS:85061278262
SN - 1793-5245
VL - 12
JO - International Journal of Biomathematics
JF - International Journal of Biomathematics
IS - 2
M1 - 1950023
ER -