Distribution, abundance and biology of unicorn cod, Bregmaceros mcclellandi in the deep scattering layers of Indian Exclusive Economic Zone

Reghu, R and Balachandran, K and Menon, N G and Vivekanandan, E and Chakraborty, S K and Devadoss, P (1996) Distribution, abundance and biology of unicorn cod, Bregmaceros mcclellandi in the deep scattering layers of Indian Exclusive Economic Zone. In: Proceedings of the Second workshop on scientific results of FORV Sagar Sampada, 15-17 February 1994, Kochi.

[img]
Preview
PDF
231Kb

Abstract

In the deep scattering layer (DSL) the fishes have accounted for 5.4 % of the total (numerical) biomass. Juvenile fish belonging to different families were the most abundant component followed by Vinciguerria, myctophids, leptocephali, stomiforms, and unicorn cod. The "unicorn cod is represented by a single species, Bregmaceros mcclellandi (2.4%) in the total fish biomass. It occurred in 52 stations out of 445 IKMT stations. During day time the average number per haul was 21 where as in night hauls it was 29. The resource was fairly abundant along the northwest coast within the depth belt of 200 m. Biological studies on the size composition, feeding habits, and reproductive biology of the species were also carried out. The length ranged from 10-65 mm. The major diet consists of copepods, euphausiids, cheatognaths, ostracods and decapod larvae. Invariably the feeding intensity was low. The catch was composed of mostly females in maturity stages IV-V. The species spawns only once in a year. The fecundity ranged from 530 - 980 in fishes of 42 - 50 mm in total length.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Distribution; abundance; biology; unicorn cod; Bregmaceros mcclellandi; Indian EEZ
Subjects:Demersal Fishes
Divisions:CMFRI-Cochin > Marine Capture > Demersal Fisheries
ID Code:5204
Deposited By:Arun Surendran
Deposited On:20 Oct 2010 12:28
Last Modified:20 Oct 2010 12:28

Repository Staff Only: item control page