Fisheries Agencies and Marine Biodiversity

Marine and Coastal Fisheries

Pop-up satellite archival tags (n = 31) were deployed on Yellowfin Tuna Thunnus albacares in the Gulf of Mexico for periods ranging from 14 to 95 d. Differences in diel vertical behavior were assessed by comparing time spent at temperature relative to the surface temperature ( T). Pooled samples revealed that 31% of darkness hours, 20% of twilight hours, and 12% of daylight hours were spent in ...

Marine and Coastal Fisheries

—The ability of fish to submerge after discarding is often used as a proxy for survival, but this practice underestimates total discard mortality because delayed mortality is overlooked. Fishery managers need a way to link ‘‘sink or swim’’ indicators, or variables observed during capture and release, with delayed mortality rates. We conducted a cage study of red snapper Lutjanus campechanus off...

Fisheries and Marine Service Yuci

Chinese Marine Capture Fisheries

This contribution reviews the development of Chinese marine fisheries and fleet structure since the founding of the People’s Republic of China (‘China,’ excluding Hong Kong, Macao, and Taiwan) in 1949, up to the present, with emphasis on the type and quality of underlying statistical information, especially on landings. Our main purpose is to provide a basis for evaluating the credibility of re...

Electrofishing in Marine Fisheries

Electrofishing exploits the effects of electric fields on the target species to aid their capture. The challenge is to design the gear so that the electric field is strong enough to stimulate the target species and make it available for capture, while minimising any adverse effects on other species. Larger fish are more likely to be affected by an electric field than smaller fish, because for a...