Bullet tuna
Aug 15, 2022
Tso lus
- Dorsal liab qab cheeb tsam tsis txuas mus rau pem hauv ntej mus rau pectoral-fin tswv yim
- Cov tuav hauv dorsal liab qab cheeb tsam tsuas yog me ntsis oblique
- Posterior kawg ntawm corselet spanning 1-5 teev dav nyob rau hauv lub thib ob dorsal-fin keeb kwmDorsal fins dav sib cais
- Dorsal fins dav sib cais
- 8 dorsal finlets, 7 qhov quav finlets
- Loj nruab nrab keel nrog 2 me keels ntawm ob sab ntawm caudal peduncle
- Interpelvic txheej txheem ib leeg, loj
- 43-48 gill rakers ntawm thawj gill arch
- Tus nplaig nrog 2 longitudinal ridges
Bluish dub rau ntshav saum toj no, nyiaj hauv qab. Scaleless corselet cheeb tsam uas muaj ~ 15 ntsug tsaus tuav tom qab thawj dorsal fin.
Txog li 50 cm TL (me duaAxis thazard) thiab mus txog 1.84 kg hauv qhov hnyav.1
Circumglobal hauv dej sov.
Inshore pelagic, pom los ntawm qhov chaw mus rau 200 m qhov tob.
Feem ntau noj ntses me me, tshwj xeeb tshaj yog clupeids, thiab kuj squid, crustaceans thiab zooplankton xws li roob ris thiab stomatopod larvae. Highly migratory tsim tib lub tsev kawm ntawv thiab ntau hom. Kev loj hlob txawv ntawm thaj av, qhov ntev ntawm 50 feem pua kev loj hlob rau ob leeg poj niam yog kwv yees li 24 cm FL hauv Is Nrias teb thiab 18.8 cm FL hauv Philippines.2, 3Hnub nyoog ntawm thawj kev loj hlob hauv Nyiv yog 1.25 xyoo.4 Axis rocheiyog ntau tus spawner uas tsim tawm ntawm 31,000–162,800 qe ib spawning nyob ntawm qhov loj ntawm cov ntses. Qe yog pelagic thiab suav hais tias yog ib feem tseem ceeb ntawm lub vev xaib khoom noj vim lawv cov khoom noj ntau. Lub hnub nyoog siab tshaj plaws yog kwv yees li ntawm 5 xyoos.5
Cov ntaub ntawv:
- IGFA. IGFA world record game fishes. International Game Fish Association Dania Beach, Florida. 2011;
- Collette BB, Cole K. Kev tsim tawm thiab kev loj hlob hauv cov ntses epipelagic. Kev yug me nyuam thiab kev sib deev hauv cov ntses marine: qauv thiab txheej txheem University of California Press, Berkeley. 2010; 21–63.
- Muthiah C. Maturation and spawning of Euthynnus affinis, Axis thazard and Axis rochei in the Mangalore inshore area during 1979-82. CMFRI Bulletin. 1985; 36:71–85.
- Niiya Y. Hnub nyoog, kev loj hlob, maturation thiab lub neej ntawm mos txwv tuna Axis rochei nyob rau hauv lub Pacific dej tawm ntawm Kochi prefecture [Nyiv]. Cov ntawv xov xwm ntawm Japanese Society of Scientific Fisheries (Nyiv). 2001;
- Jasmine S, Rohit P, Abdussamad EM, Koya KP, Joshi KK, Kemparaju S, et al. Biology thiab nuv ntses ntawm cov mos txwv tuna, Axis rochei (Risso, 1810) hauv Indian dej. Indian Journal of Fisheries. 2013; 60(2:13–20).