The skipjack fishery in Eastern Indonesia: distinguishing the effects of increasing effort and deploying rumpon FADs on the stock

Rumpons, (fads) were widely deployed in Indonesia in the eighties. In the Halmahera area, rumpon increased cpue by 41% , landings of fish per ton of live bait increased by 24%, the consumption of diesel oil for tuna catches reduced by 46%, and profits increased from Rp 10 to 60 million by boat per year1. Tuna aggregation around rumpon increased catchability by more than 40% compared to free swimming tuna. The Halmahera skipjack fishery was assessed by combining catch and effort data from rumpon and pre-rumpon areas of the fishery, and showed that controlled effort could increase landings of approximately 15,000 t per year. Tagging data show that the Halmahera skipjack fishery is probably supported by a local unit stock. Philippine rumpons (payaos) were fished with small mesh purse seine and ring nets fishing small sized tunas 12-35 cm fl (40-50% of landings) and caused recruitment overfishing. Indonesian rumpons were fished with pole-and-line causing neither recruitment nor growth overfishing.

Keyword(s)

Attracting techniques, Catch/effort, Economics, Fishery management, Overfishing, Stock assessment, Tuna fisheries, Article Geographic Terms: ISEW, Indonesia

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Monintja DR, Mathews CP (2000). The skipjack fishery in Eastern Indonesia: distinguishing the effects of increasing effort and deploying rumpon FADs on the stock. Pêche thonière et dispositifs de concentration de poissons, Caribbean-Martinique, 15-19 Oct 1999. https://archimer.ifremer.fr/doc/00042/15320/

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