Tuesday, July 31, 2007

Skipjack tuna fact sheet

Katsuwonus pelamis | Skipjack tuna

The skipjack tuna is a migratory species distributed in waters between 14.7° C and 30° C, but absent in the Black Sea and the Eastern Mediterranean. Skipjack tunas are epipelagic and rarely found at depths exceeding 260 m and 15° C. The general time for spawning is between the beginning of autumn and spring, though it may be year-round near the regions around the Equator. Fertility changes with body size, with the number of eggs per season in females ranging from 80, 000 to 2,000,000. The skipjack tuna is the most caught species in tuna the fishing industry in the world, including in the Azores. They normally appear in Azorean waters between July and October, but can stay until December. 


Length: 

Maximum: 1.11 m
Azores about 50 cm
Breeding size: 40 - 55 cm (age about 1.5 years)

Weight: 
Average 23.5 - 32.5 kg
Maximum: 34.5 kg
Azores: about 4 kg

Diet: small fish, crustaceans, cephalopods and other molluscs

Longevity: 6 - 12 years

Conservation status: Least concern. Currently there is no evidence that the population in the Atlantic is being affected negatively by the fisheries. 


In other languages
Portuguese: Bonito
Spanish: Listado/rayado/bonito
French: Bonite à ventre rayé
Italian: Tonnetto striato
German: Echte Bonito
Dutch: Echte bonito
Swedish: Bonit
Norwegian: Bukstripet bonitt
Danish: - 
Finnish: Boniitti
Polish: Bonito/ryba
RussianПолосатый тунец

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