Anchovies: nws yog dab tsi thiab lawv nyob qhov twg

Lub ntiaj teb no dej hiav txwv - zoo inexhaustible txhab ntawm tag nrho cov hom ntawm cov kev pab, thiab ib tug ntawm cov tseem ceeb tshaj plaws yog cov ntses. Ib txhia hom muaj xws li yawm economic tseem ceeb uas lawv catch thiab export yog ib tug tseem ceeb nyiaj txiag yam khoom. Cov no muaj xws anchovies. Yuav ua li cas yog nws?

Nyob rau hauv no ua lag luam lub npe yuav nkaum ob peb hom. Cov muaj xws li cov me nyuam ntses (Engraulis encrasicolis), Japanese me nyuam ntses (E. Japonicus), raws li zoo raws li lub Peruvian, Argentinean thiab lwm yam.

Nyob rau hauv dhau los xyoo, lawv catch tau mus txog tej tagnrho hais tias muaj ntau ntawm lawv twb nyob rau lub verge ntawm extinction. Niaj hnub no ua tswvcuab qhov loj tshaj plaws cov qauv, tab sis tseem ib co xeev tsis them tej quav ntsej rau lawv. Tab sis cov kev ntsuas tau yielded zoo tau: Piv txwv, lub Peruvian me nyuam ntses (dab tsi nws yog, peb tau hais tias) yuav luag tag rov qab los nws cov thawj lub dag lub zog. Los ntawm txoj kev, qhov no zoo ntawm rau feem ntau yog ib feem exported rau peb lub teb chaws, tab sis vim koj tsis tau txhawj txog nws pab extermination ntawm tsawg ntses.

Tam sim no, Peruvian me nyuam ntses yog tej zaum cov feem ntau ntau hom nyob rau hauv lub hiav txwv. Tsuas yog tso cai catch tagnrho yog kwv yees li 8 lab tons ib xyoos twg. Tag nrho cov no ntau npaum li cas yog nyob rau hauv ib tug me me nqaum sawb ntawm 550 km ntev thiab 55 km dav. Qhov tseeb yog tias nyob rau hauv cov cheeb tsam no yog haib dej hiav txwv dej tsaws ntxhee, uas coj mus rau lub shores ntawm tons ntawm phytoplankton. Nws thiab noj Peruvian me nyuam ntses (nws yog dab tsi, peb yuav tsum qhia rau koj). Yog li ntawd pheej yig noj cov zaub mov piav txog cov loj loj tus naj npawb ntawm cov ntses. Noj hom zaub mov muaj li lawv feem ntau zoo siv cov kev pab ntawm cov zaub mov los luj.

By lawv tus kheej, lawv yog ib cov gregarious hom, feem ntau inhabiting lub nto khaubncaws sab nraud povtseg ntawm cov dej. Rau ib ob peb xyoos ntawm txhua tus neeg loj hlob tuaj mus rau 15 cm, xeeb ib tug luj ntawm txog '20 nyob rau plaub lub xyoos.

Cov tib Dub hiav txwv me nyuam ntses yog ib qho tseem ceeb ntawm cov zaub mov rau ntau hom, ua lub hauv paus ntawm lawv noj. Zoo li nws Peruvian "colleague", no tsiaj yog cov feem ntau nyob rau hauv nws biotope. Thaum lub sij hawm lub caij ntuj sov, cov ntses yog khaws cia nyob rau hauv ib tug sov so qhov chaw. Nyob rau hauv lub caij ntuj no, lawv mus rau ib tug tob ntawm txog 80 meters. Nyob rau hauv lub caij nplooj ntoos hlav, lawv rov sawv, pib intensive fatten rog rog thiab ces mus rau spawn.

Nyob rau hauv ntev lawv tsuj tsawg loj hlob ntau tshaj 11 cm. Nyob rau hauv lub dhau los lawm, qhov no hom ntawm kev nuv ntses yog tsis nyob rau hauv peb lub teb chaws, thiab yog li ntawd tsim ib tug giant pawg. Feem ntau nyob rau hauv lub Balaklava Bay tau teem ib tug xov tooj ntawm cov Dub hiav txwv me nyuam ntses, tias feem ntau ntawm cov ntses cia li tuag, thiab nws tsis hnov tsw tshuaj lom lub neej ntawm cov pej xeem.

Catch lawv nrog lub hnab tawv pojniam seines thiab trawls. Nyob rau hauv tas li ntawd mus Peru, rho lossis loj nyiaj ntawm European me nyuam ntses. Lavxias teb sab sailors ntau me nyuam ntses catch nyob rau hauv lub Dub hiav txwv thiab Far East, thiab lawv Japanese lug txhawb cov miv yog mob siab ua raws li nrog lossi ua volume ntawm tus thawj nyob rau hauv lawv cov cheeb tsam.

Yuav kom tau txais kev pab, lawv coj zoo li ib lub ntsev-qhuav daim ntawv (yog li ntawd-hu ua npias khoom noj txom ncauj), thiab nyob rau hauv daim ntawv ntawm cov zaub mov kaus poom nyob rau hauv cov roj. Los ntawm txoj kev, qhov tseeb, thiaj li nrov peb muaj Norwegian herring hlub anchovies (nws yog dab tsi, koj twb paub). Yog li ntawd hais tias nws cov roj cov ntsiab lus thiab amazing saj nws lom zem ntau tshuav qhov no me me ntses.

Yog li ntawd koj paub tias dab tsi anchovies. Cov duab ntses yog nyob rau hauv tsab xov xwm, yog li ntawd lub khw yuav tsis yooj yim mus ua ib tug yuam kev.