Indian Journal of Geo-Marine Sciences

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Length-Weight Relationship and Condition Factor of Four Poorly Known Deep-Sea Demersal Finfishes From Indian Eez


Affiliations
1 Department of Fisheries Biology and Resource Management, Fisheries College and Research Institute, Tamilnadu Dr. J. Jayalalithaa Fisheries University, Thoothukudi, Tamilnadu – 628 008, India
2 Centre for Marine Living Resources and Ecology (CMLRE), Govt of India, Kochi, Kerala – 682 508, India
3 Department of Aquaculture, Sacred Heart College (Autonomous), Cochin, Kerala – 682 013, India
 

Length-Weight Relationships (LWRs) and condition factor (K) were estimated for four deep-sea fish species belonging to four families from the Southeastern Arabian Sea and Western Bay of Bengal of the Indian Exclusive Economic Zone (EEZ). The specimens of Lamprogrammus brunswigi (Ophidiidae), Alepocephalus blanfordii (Alepocephaliformes), Parascombrops pellucidus (Synagropidae) and Pterigotrigla hemisticta (Triglidae) were collected using a high-speed demersal trawl II (HSDT II, crustacean version) and an EXPO-model trawl onboard FORV Sagar Sampada during March 2020. The b values ranged from 2.97 to 3.34 and the coefficient of variation (r2) ranged from 0.92 to 0.95. P. hemisticta showed negative allometric growth, and the remaining three species showed positive allometric growth. The condition factor was found to be high for P. hemisticta (1.108) compared to P. pellucidus (0.453), A. blanfordii (0.257), and L. brunswigi (0.082).

Keywords

Condition factor, Deep-sea fishes, Indian EEZ, Length-weight relationship
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  • Length-Weight Relationship and Condition Factor of Four Poorly Known Deep-Sea Demersal Finfishes From Indian Eez

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Authors

K. Bheemeswararao
Department of Fisheries Biology and Resource Management, Fisheries College and Research Institute, Tamilnadu Dr. J. Jayalalithaa Fisheries University, Thoothukudi, Tamilnadu – 628 008, India
D. Nihal
Centre for Marine Living Resources and Ecology (CMLRE), Govt of India, Kochi, Kerala – 682 508, India
K. V. Aneesh Kumar
Department of Aquaculture, Sacred Heart College (Autonomous), Cochin, Kerala – 682 013, India
R. Rajeev
Centre for Marine Living Resources and Ecology (CMLRE), Govt of India, Kochi, Kerala – 682 508, India
H. Manjebrayakath
Centre for Marine Living Resources and Ecology (CMLRE), Govt of India, Kochi, Kerala – 682 508, India

Abstract


Length-Weight Relationships (LWRs) and condition factor (K) were estimated for four deep-sea fish species belonging to four families from the Southeastern Arabian Sea and Western Bay of Bengal of the Indian Exclusive Economic Zone (EEZ). The specimens of Lamprogrammus brunswigi (Ophidiidae), Alepocephalus blanfordii (Alepocephaliformes), Parascombrops pellucidus (Synagropidae) and Pterigotrigla hemisticta (Triglidae) were collected using a high-speed demersal trawl II (HSDT II, crustacean version) and an EXPO-model trawl onboard FORV Sagar Sampada during March 2020. The b values ranged from 2.97 to 3.34 and the coefficient of variation (r2) ranged from 0.92 to 0.95. P. hemisticta showed negative allometric growth, and the remaining three species showed positive allometric growth. The condition factor was found to be high for P. hemisticta (1.108) compared to P. pellucidus (0.453), A. blanfordii (0.257), and L. brunswigi (0.082).

Keywords


Condition factor, Deep-sea fishes, Indian EEZ, Length-weight relationship

References