''Thunnus alalunga''
''Thunnus albacares''
''Thunnus atlanticus''
''Thunnus maccoyii''
''Thunnus obesus''
''Thunnus orientalis''
''Thunnus thynnus''
''Thunnus tonggol'' Tuna are several species of ocean-dwelling fish in the family Scombridae, mostly in the genus ''Thunnus''. Tuna are fast swimmers and include several species that are endothermic. Unlike most ocean fish species, which have white flesh, the flesh of tuna is pink. This is because the tuna's blood has a higher oxygen carrying ability than other fish species. Some of the larger tuna species such as the bluefin tuna can raise their blood temperature above the water temperature with muscular activity. This enables them to live in cooler waters and survive a wider range of circumstances. Tuna is a popular seafood. Some varieties of tuna, such as the Bluefin tuna, are claimed to be endangered because of overfishing, while others are part of well maintained fisheries, such as the bigeye tuna or yellowfin tuna. Mercury (element) levels are oftentimes relatively high in tuna, as they sit higher in the food chain. Because of this, the FDA in March 2004 issued guidelines recommending pregnant women, nursing mothers and children should limit their intake of tuna and certain other types of fish. It is difficult to keep tuna in a captive environment; Monterey Bay Aquarium is one of the few aquariums in the world that successfully keep tuna in display. Types include: *Bluefin tuna, which can grow to 1,500 lb (680 kg) *Yellowfin tuna *Albacore tuna *Bigeye tuna Tuna are a common target for big-game fishing, and are mostly caught on artificial lures. == Other species == Species of several other genera (all in Scombridae) are commonly named "tuna": * Slender tuna ''Allothunnus fallai'' * Bullet tuna ''Auxis rochei rochei'' * Frigate tuna ''Auxis thazard thazard'' * Kawakawa (little tuna or mackerel tuna) ''Euthynnus affinis'' * Little tunny (little tuna) ''Euthynnus alletteratus'' * Butterfly kingfish (Butterfly tuna) ''Gasterochisma melampus'' * Dogtooth tuna ''Gymnosarda unicolor'' == Trivia == In Japan, a railway roadkill is sometimes referred as "tuna". Because the dead body's head and feet are chopped off by the train, it looks like a piece of frozen tuna in a fish market (the tail of a tuna is frequently chopped off to examine its fat content). == External links == * [http://www.mbayaq.org/cr/cr_seafoodwatch/sfw_factsheet.asp?fid=109 Monterey Bay Aquarium's ''Seafood Watch'' program] * [http://www.kallipolis.com/diet/food.php?id=15118 Bluefin tuna nutrition information] Fish Scombridae
== Endothermy == I can guarantee that they are not "warm-blooded." Won't be sending my biology students here... :Actually they are endothermic, see p. 424 of ''Fishes of the World'' or any recent book on fish biology, Bond for instance. It does need more detail, the story is interesting. User:Stan Shebs 13:56, 7 Feb 2004 (UTC) ::Agreed, they are warm blooded in that their core body temperature is higher than the surrounding water, and this is maintained by heat-exchange systems in blood vessels that reach the skin (so warm blood moving to the skin is cooled down by, and warms up, blood moving from the skin back to the heart. As far as I know, the difference is not great, but it is there. Unfortunately I don't have enough expertise in the details to be able to produce a good page edit - User:MPF 18:01, 23 Feb 2004 (UTC) :::Well, these guys think tuna are endothermic (warm-blooded) and it looks to me they ought to know! :::[http://www.tunaresearch.org/trcc/whatsnew.html] ::::I had no idea that ANY fish were endothermic. Until today I was sure the only endotherms were birds and mammals. This sheds an interesting evolutionary light on things... If you believe in that sort of thing. == Mercury == Correct me if i'm wrong, but mercury levels in Tuna is relatively low compared to most fish. I think there's a problem with the front page.
#REDIRECT Tirion
See other meanings of words starting from letter:
Words begining with Tuna:
Tuna
Tuna
Tna
Tunable_laser
Tunadilla
Tunafish
Tunagate
Tunakabuni
Tunak_Tunak_Tun
Tunaln
Tunaln_Hundred
Tunami
Tunapuna
Tunaria
Tunayosi
Tunayosi_Tokugawa
Tuna_(corporation)
Tuna_(disambiguation)
Tuna_(Polynesian_mythology)
Tuna_Court_District
Tuna_el-Gebel
Tuna_fish
Tuna_Grand_Court_District
Tuna_melt
Tuna_Salad
Tuna_salad
Tuna_zaka
Tuna
''Thunnus alalunga''
''Thunnus albacares''
''Thunnus atlanticus''
''Thunnus maccoyii''
''Thunnus obesus''
''Thunnus orientalis''
''Thunnus thynnus''
''Thunnus tonggol'' Tuna are several species of ocean-dwelling fish in the family Scombridae, mostly in the genus ''Thunnus''. Tuna are fast swimmers and include several species that are endothermic. Unlike most ocean fish species, which have white flesh, the flesh of tuna is pink. This is because the tuna's blood has a higher oxygen carrying ability than other fish species. Some of the larger tuna species such as the bluefin tuna can raise their blood temperature above the water temperature with muscular activity. This enables them to live in cooler waters and survive a wider range of circumstances. Tuna is a popular seafood. Some varieties of tuna, such as the Bluefin tuna, are claimed to be endangered because of overfishing, while others are part of well maintained fisheries, such as the bigeye tuna or yellowfin tuna. Mercury (element) levels are oftentimes relatively high in tuna, as they sit higher in the food chain. Because of this, the FDA in March 2004 issued guidelines recommending pregnant women, nursing mothers and children should limit their intake of tuna and certain other types of fish. It is difficult to keep tuna in a captive environment; Monterey Bay Aquarium is one of the few aquariums in the world that successfully keep tuna in display. Types include: *Bluefin tuna, which can grow to 1,500 lb (680 kg) *Yellowfin tuna *Albacore tuna *Bigeye tuna Tuna are a common target for big-game fishing, and are mostly caught on artificial lures. == Other species == Species of several other genera (all in Scombridae) are commonly named "tuna": * Slender tuna ''Allothunnus fallai'' * Bullet tuna ''Auxis rochei rochei'' * Frigate tuna ''Auxis thazard thazard'' * Kawakawa (little tuna or mackerel tuna) ''Euthynnus affinis'' * Little tunny (little tuna) ''Euthynnus alletteratus'' * Butterfly kingfish (Butterfly tuna) ''Gasterochisma melampus'' * Dogtooth tuna ''Gymnosarda unicolor'' == Trivia == In Japan, a railway roadkill is sometimes referred as "tuna". Because the dead body's head and feet are chopped off by the train, it looks like a piece of frozen tuna in a fish market (the tail of a tuna is frequently chopped off to examine its fat content). == External links == * [http://www.mbayaq.org/cr/cr_seafoodwatch/sfw_factsheet.asp?fid=109 Monterey Bay Aquarium's ''Seafood Watch'' program] * [http://www.kallipolis.com/diet/food.php?id=15118 Bluefin tuna nutrition information] Fish Scombridae
Tuna
== Endothermy == I can guarantee that they are not "warm-blooded." Won't be sending my biology students here... :Actually they are endothermic, see p. 424 of ''Fishes of the World'' or any recent book on fish biology, Bond for instance. It does need more detail, the story is interesting. User:Stan Shebs 13:56, 7 Feb 2004 (UTC) ::Agreed, they are warm blooded in that their core body temperature is higher than the surrounding water, and this is maintained by heat-exchange systems in blood vessels that reach the skin (so warm blood moving to the skin is cooled down by, and warms up, blood moving from the skin back to the heart. As far as I know, the difference is not great, but it is there. Unfortunately I don't have enough expertise in the details to be able to produce a good page edit - User:MPF 18:01, 23 Feb 2004 (UTC) :::Well, these guys think tuna are endothermic (warm-blooded) and it looks to me they ought to know! :::[http://www.tunaresearch.org/trcc/whatsnew.html] ::::I had no idea that ANY fish were endothermic. Until today I was sure the only endotherms were birds and mammals. This sheds an interesting evolutionary light on things... If you believe in that sort of thing. == Mercury == Correct me if i'm wrong, but mercury levels in Tuna is relatively low compared to most fish. I think there's a problem with the front page.
Tna
#REDIRECT Tirion
See other meanings of words starting from letter:
T
TA | TB | TC | TD | TE | TF | TG | TH | TI | TJ | TK | TL | TŁ | TM | TN | TO | TP | TR | TS | TU | TW | TX | TY | TZ |Words begining with Tuna:
Tuna
Tuna
Tna
Tunable_laser
Tunadilla
Tunafish
Tunagate
Tunakabuni
Tunak_Tunak_Tun
Tunaln
Tunaln_Hundred
Tunami
Tunapuna
Tunaria
Tunayosi
Tunayosi_Tokugawa
Tuna_(corporation)
Tuna_(disambiguation)
Tuna_(Polynesian_mythology)
Tuna_Court_District
Tuna_el-Gebel
Tuna_fish
Tuna_Grand_Court_District
Tuna_melt
Tuna_Salad
Tuna_salad
Tuna_zaka
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