CATCH AND SIZE OF BULLET AND FRIGATE TUNA CAUGHT BY USING DRIFTING GILLNET IN INDIAN OCEAN OF INDONESIA BASED AT CILACAP FISHING PORT
Abstract: Pelagic fishes such
as bullet and frigate tuna in the Indian Ocean were caught in Indian Ocean of
Indonesian jurisdiction using various fishing gears including, drifting gillnet
and landed in various fishing port in along coastal of west Sumatera (Banda
Aceh, Pariaman, Bungus/Padang and Painan) as well as south Java, Bali and
Nusatenggara (Muarabaru/Jakarta, Pelabuhanratu, Cilacap, Kedonganan, Benoa). In
Cilacap, tuna drifting gillnet fishery is fishing bullet and frigate tuna as by
product. The current work describes the catch and size distribution of bullet
tuna (Auxis rochei Risso, 1810) and frigate tuna (Auxis thazard Lacepède, 1800)
caught by drifting gillnet based at Cilacap Fishing Port. Data and information
obtained through catch monitoring, port sampling and landing report of Cilacap
Fishing Port 2011 as well as from Capture Fisheries Statistics of Indonesia
2010. The catch estimation of bullet and frigate tuna on drifting gillnet
fishery is about 3.220 and 47.346 tons respectively. The catch rate of drifting
gillnets on the frigate tuna was 0.364 mt/trip in 2006 decreased to 0.054 mt/trip
in 2011 (decreased average 17% per year). The catch rate of drifting gillnets
on the bullet tuna was also decreased from 0.178 mt/trip in 2006 to 0.013 mt/
trip in 2011. The FL of bullet and frigate tuna ranged respectively between
16-39cm and 25-46cm. Both species were mostly caught by drifting gillnet in
adult size condition.
Keywords: Catch and size
distribution; bullet and frigate tuna; drifting gillnet; Indian Ocean; Cilacap
fishing port
Author: Agustinus Anung
Widodo, Fayakun Satria
Journal Code: jpperikanangg130027
