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    Assessing the geographical distribution of carnivorous and planktivorous fishes in the western Bay of Bengal

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    Date
    2023
    Author
    Vijith, V.
    Anil, A.C.
    Shankar, D.
    Antony, S.P.
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    Abstract
    There is a clear distinction in the feeding habits of fishes between the northeastern and southeastern Arabian Sea (west coast of India) � the north is carnivorous, and the south is planktivorous �, but such a distinction is not available for the western Bay of Bengal (BoB; comprising the east coast of India and the coasts of Sri Lanka and Bangladesh).We address this question by using publicly available landing data of finfishes for the four Indian states (Tamil Nadu, Andhra Pradesh, Odisha, and West Bengal) located along the western boundary of the BoB.Our analysis shows that the southwestern BoB is rich in fisheries and is more planktivorous compared to the northwestern BoB, which is more carnivorous.North-south variability exists even within the group of fishes such as anchovies and carangids.The meagre landing information for Sri Lanka and Bangladesh suggests that they show planktivorous and carnivorous characteristics of the southwestern and northwestern BoB, respectively.We show that monthly data and clarity on where the fish were caught are necessary to link the climatic conditions to the fishery along the western BoB.The landings on the Arabian-Sea and Gulf-of-Mannar part of the Tamil Nadu coast must be separated from the landings on its BoB coast.This separation can not be done with existing landing data and should be the first step in analysing fisheries data from the western BoB.The challenges in delineating the distribution of finfishes using available data illustrated here deliver guidance for future data collection and analysis at higher spatial and temporal scales for sustainable fisheries resource management in the region.
    URI
    https://doi.org/10.1016/J.ECOINF.2022.101961
    https://drs.nio.org/drs/handle/2264/8925
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