Lifespan, longevity, and ageing
provided by AnAge articles
Maximum longevity: 9 years (wild)
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- Joao Pedro de Magalhaes
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- de Magalhaes, J. P.
Geelvintuna
(
Afrikaans
)
provided by wikipedia AF
Die Geelvintuna (Thunnus albacares), 'n roofvis, is 'n lid van die Tuna-familie en kom voor aan die hele kuslyn van Suid-Afrika, en wêreldwyd in tropiese, sub-tropiese en matige waters. In Engels staan die vis bekend as die Yellowfin Tuna of Tunny. Die Geelvintuna is 'n uiters gewilde sportvis.
Identifikasie
Die vis is torpedovormig, donkerblou aan die bokant en 'n sylangse geel streep skei die bokant van die silwerkleurige pens. Die vis het geel rugvinne terwyl die rug- en anale vinne sekelvormig word met ouderdom. Vertikale wit strepe of vlekke is sigbaar op die pens van 'n vis wat pas gevang is. Die massa van 'n volwasse geelvintuna wissel van 40 tot 100 kg.
Gewoontes
Hulle is aflandig verspreid maar is al van die kus af gevang (Rooikranz naby Kaapstad en Robberg naby Plettenbergbaai) wanneer die toestande gunstig was. Die vis verkies water van 17 tot 27 °C, en jag veral op pelagiese vis en pylinkvis.
Sien ook
Bronne
Eksterne skakel
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Geelvintuna: Brief Summary
(
Afrikaans
)
provided by wikipedia AF
Die Geelvintuna (Thunnus albacares), 'n roofvis, is 'n lid van die Tuna-familie en kom voor aan die hele kuslyn van Suid-Afrika, en wêreldwyd in tropiese, sub-tropiese en matige waters. In Engels staan die vis bekend as die Yellowfin Tuna of Tunny. Die Geelvintuna is 'n uiters gewilde sportvis.
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- Wikipedia skrywers en redakteurs
Description
provided by World Register of Marine Species
Schools in near-surface waters as well as below the thermoclime, with temperatures between 18° and 31°C, primarily by size, either in monospecific or multispecies groups. Larger fish frequently school with porpoises, also associated with floating debris and other objects. Feeds on fishes, crustaceans and squids. It is sensitive to low concentrations of oxygen and therefore is often limited to depths of 100 m (Ref. 9340). Peak spawning occurs during the summer, in batches (Ref. 9684). Pole-and-line fishing is still one of the major surface fishing techniques while longlining fishing method is for deep swimming yellowfin tuna. Encirling nets are employed to catch schools near the surface (Ref. 9340). Marketed mainly frozen and canned (Ref. 9684), but also fresh (Ref. 9340) and smoked (Ref. 9987).
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- WoRMS Editorial Board
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- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- Edward Vanden Berghe [email]
Diet
provided by World Register of Marine Species
Feed on fishes, crustaceans and squids. It is sensitive to low concentrations of oxygen and therefore is not usually caught below 250 m in the tropics
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- cc-by-4.0
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- WoRMS Editorial Board
- bibliographic citation
- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- Mary Kennedy [email]
Distribution
provided by World Register of Marine Species
Worldwide in tropical and subtropical seas, but absent from the Mediterranean Sea
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- WoRMS Editorial Board
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- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- Mary Kennedy [email]
Habitat
provided by World Register of Marine Species
An oceanic species occurring above and below the thermoclines. They school primarily by size, either in monospecific or multispecies groups. Larger fish frequently school with porpoises, also associated with floating debris and other objects.
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- copyright
- WoRMS Editorial Board
- bibliographic citation
- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- Mary Kennedy [email]
Habitat
provided by World Register of Marine Species
nektonic
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- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- Mary Kennedy [email]
Habitat
provided by World Register of Marine Species
Known from seamounts and knolls
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- cc-by-4.0
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- WoRMS Editorial Board
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- Froese, R. & D. Pauly (Editors). (2019). FishBase. World Wide Web electronic publication. version (02/2019). Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication. North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS) North-West Atlantic Ocean species (NWARMS)
- contributor
- [email]