Tuna

Tuna
	Kemyskans a dunas (dhort an topp) tuna gwydn, tuna rudh, tuna labol, tuna askell velyn, tuna lagas meur
Klassans bewoniethek
Gwlaskor:	Animalia
Fylum:	Chordata
Klass:	Actinopterygii
Urdh:	Scombriformes
Teylu:	Scombridae
Genera
	Allothunnus: tunas moon; Auxis: tunas fregat; Euthynnus: tunas byghan; Katsuwonus: tunas labol; Thunnus: tunas gwir;

Tuna (e'n FSS (C) touna po terweythyow toun) ew teylu a bysk dowr sall a long dhe'n trib Thunnini, isvagas a deylu an Scombridae (an brilly (FSS (C) brithili)). Ema an Thunnini ow comprehendya 15 ehen en 5 kinda. Ema aga myns ow varya en feur, dhort an tuna pellen (hes hirra: 50 cm po 1.6 troos-hes, poster: 1.8 kg po 4 poos) dhe'n tuna rudh (hes hirra: 4.6 m po 15 troos-hes, poster: 684 kg po 1,508 poos) a ell bewa bys dhe 50 bloodh.

Tunas a ell gwitha temperedh corf uhella ages an dowr a-dro dhodhans. Preydhyer gweythresek ha skav, ema dhe'n tuna corf stremlinys ha thew emesk an puskes scaffa e'n mor bras (derivys dell ell an tuna askel velyn, rag ensampel, neyja tothter bys dhe 75 km/our (47 m/our)). Kevys enjei en dowrow tobm, lebmath enjei peskechys en kenwerthel en efan avel pysk boos. Drefen gorpeskecha, nebes ehednow a dunas, pecara tuna askell las an dhyhow, ew peryllys.

An ger "tuna" a dheu dhort an ger Latin cres Thunnus (dhort an Hen Greka: θύννος, romanheys: thýnnos), en y dro dhort θύνω (thýnō), ow styrya "fistena".

Tacsonomieth

An trib Thunnini ew skorren hag a gomprehend 15 ehen en 5 kinda:

teylu Scombridae
- trib Thunnini: tunas
  - kinda Allothunnus: tunas moon
  - kinda Auxis tunas fregat
  - kinda Euthynnus: tunas bian
  - kinda Katsuwonus: tunas labol
  - kinda Thunnus: tunas gwir
    - iskinda Thunnus (Thunnus): bagas askell las
    - iskinda Thunnus (Neothunnus): bagas askell velyn

Ehednow gwir

Kernwwek	Sowsnek	Hanow sciensek	Hes hirra	Poos moyha	Oos moyha	Gre IUCN
Thunnus - an bagas askell las
Tuna gwydn	Albacore tuna	T. alalunga	1.4 m	60.3 kg	9-13 bloodh	Bern lyha
Tuna askell las an dhyhow	Southern bluefin tuna	T. maccoyii	2.45 m	260 kg	20-40 bloodh	Peryllys
Tuna lagas meur	Bigeye tuna	T. obesus	2.5 m	210 kg	5 - 16 bloodh	Goliadow
Tuna askell las an Mor Cosel	Pacific bluefin tuna	T. orientalis	3 m	450 kg	15 - 26 bloodh	Ogas dhe wodrosys
Tuna rudh	Atlantic bluefin tuna	T. thynnus	4.6 m	684 kg	35 - 50 bloodh	Bern lyha
Neothunnus - an bagas askell velyn
Tuna askell dhu	Blackfin tuna	T. atlanticus	1.1 m	22.4 kg		Bern lyha
Tuna lost hir	Longtail tuna	T. tonggol	1.45 m	35.9 kg	18 bloodh	Nag eus kedhlow
Tuna askell velyn	Yellowfin tuna	T. albacares	2.4 m	200 kg	5 -9 bloodh	Bern lyha

Ehednow erel

Kernowek	Sowsnek	Hanow sciensek	Hes hirra	Poos moyha	Oos moyha	Gre IUCN
Tunas erel
Tuna moon	Slender tuna	Allothunnus fallai	1.05 m	13.7 kg		Bern lyha
Tuna pellen	Bullet tuna	Auxis rochei	0.5 m	1.8 kg	5 bloodh	bern lyha
Tuna fregat	Frigate tuna	Auxis thazard	0.65 m	1.7 kg	5 bloodh	Bern lyha
Tuna brithel	Mackerel tuna	Euthynnus affinis	1 m	13.6 kg	6 bloodh	Bern lyha
Tuna bian	Little tunny	Euthynnus alletteratus	1.2 m	16.5 kg	10 bloodh	Bern lyha
Tuna labol du	Black skipjack tuna	Euthynnus lineatus	0.84 m	11.8 kg		Bern lyha
Tuna labol	Skipjack tuna	Katsuwonus pelamis	1.1 m	34.5 kg	6-12 bloodh	Bern lyha

Peskecha

Dihaval dhe'n brassa niver a buskes, hag uji dhodhans kig gwydn, liw keher tuna ew gwynnrudh po rudh. An keher a gebmer an liw dhort myoglobin, molekulen kelmi-oksyjen, ascorrys gen tunas en mynsow fest moy ages puskes erel. Drefen bos an goos mar rych en oksyjen, tunas a ell reeei moy a nerthedh dh'aga heher ha neyja uskissa.

Pysk a bris ew tuna en kenwerthek. Ema an Fondyans Sostenadewder Boos Mor Kesgwlasek (International Seafood Sustainability Foundation) ow kwitha derivansow manylys war studh stockys ollvesek tunas. Herwydh an ISSF, an ehednow posekka rag peskecha ew tuna askell velyn, tuna lagas meur, tuna rudh, tuna gwydn ha tuna labol.

An cachyans ollvesek a janjyas dhort 300,000 tonnas an vledhen woja Second Gwerryans an Bes dhe 1 milvil tonnas erbydn 1960, ha moy ages 4 milvil tonnas erbydn hedhyw. Ema dhe bris tuna yskydnys en feur drefen an fowt a stockys. Moy ha moy a dunas ew gwithys avel puskes cowel en pyskvaow en Ostrali, an Mor Cres ha Japan.

En venowgh ema tunas ow neyja gen pyffyers ha perderys ew dell wra hebma gweres aga omwitha rag morvleydhes.

Boos

Perderys ew yn kebmyn bos kig tuna tabm denti. Erbydn lebmyn, treghow kig tuna ew comprehendys en saladys ha sandys rastellys gen keginoryon gorwaswonnys an pellwolok. En venowgh, dyghtys ew tuna kriv en sandys japanek pecara sushi po sashimi. Meur a dounas ew cavasys en olewow po hyli.