People use fish to meet their needs. Fish utilization and economic activities in the neritic tuna’s fishery system at Pasongsongan were an effort achieve social welfare. However, uncertainty surrounding caused a risk fishermen's income stability. Those are conducted this research identify elements of social-ecological tuna fisheries assess based on daily prices. Identification followed framewor...

Large pelagic fish live on the water surface in groups. Skipjack tuna (Katsuwonus pelamis), yellowfin (Thunnus albacares), mackerel (Euthynnus affinis), (Scomberomous guttatus) are species of fishes that mainly catches by fishermen using purse seines. This study aims to determine length and weight large Idi Rayeuk best fishing season. research was conducted one month. Fish samples were collecte...

Abstract Euthynnus (family Scombridae) is a genus of marine pelagic fish species with worldwide distribution that comprises three allopatric species: E. alletteratus , affinis and lineatus . All them targeted by artisanal commercial fisheries. We analyzed 263 individuals from Atlantic Pacific Oceans using two genetic markers, the mtDNA Control Region (350 bp) nuclear calmodulin (341 bp). The re...

Quality changes of Eastern little tuna (Euthynnus affinis) slices treatedwith caffeic or tannic acid (0.2 g kg 1) and the control during 15 days of refrigerated storage in air or under modified atmospheric packaging (MAP: 60% CO2, 35% N2, 5% O2) were studied. Tannic acid exhibited a greater preventive effect on metmyoglobin (metMb) formation and lipid oxidation than did caffeic acid (P < 0.05)....