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Relationship between fish size and otolith size of four deep-sea fishes from the Western Bay of Bengal, India

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Title Relationship between fish size and otolith size of four deep-sea fishes from the Western Bay of Bengal, India
 
Creator Bheemeswararao, K
Kumar, K V Aneesh
Kingston, S David
Jawahar, P
Dharmakar, P
Manjebrayakath, H
 
Subject Deep-sea fishes
Indian water
Morphometry
Otolith
Western Bay of Bengal
 
Description 179-184
The present study provides the otolith morphology and morphometric relationships with fish size of four deep-sea fishes
(Parascombrops pellucidus Alcock, 1889, Alepocephalus blanfordii Alcock, 1892, Lamprogrammus niger Alcock, 1891,
Pterygotrigla hemisticta (Temminck & Schlegel, 1843)) collected from western Bay of Bengal during March 2020. Among
these, the equations were derived for the first time for three species (P. pellucidus, A. blanfordii, L. niger). Sampling was
done as a part of deep-sea exploratory survey of FORV Sagar Sampada along the deeper shelf regions of the Bay of Bengal
at a depth range of 200 – 1000 m using high-speed demersal trawl (HSDT-CV). The numerical relations established using
regression between fish size (TL) and various otolith morphometric measurements (otolith length (OL), otolith height (OH),
otolith weight (OWe), otolith area (OA) and otolith perimeter (OP)) can be used to predict the prey size in food and feeding
studies for studying the food web dynamics of less-studied deep-sea fishes. LWR of the otolith of selected species showed a
negative allometric growth (t-test, p < 0.5). The higher r2 value (> 0.70) obtained for the relationship between fish size (TL)
and various otolith morphometric measurements indicates the robustness of the model. The representative images of otoliths
of these fishes will be helpful to the taxonomists for the species confirmation and reconstruction of past species assemblages
in the palaeontological studies.
 
Date 2022-07-01T11:39:58Z
2022-07-01T11:39:58Z
2022-02
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/60019
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJMS Vol.51(02) [February 2022]