Electric eels - lub inhabitants ntawm lub nkos dej ntawm tus Amazon

Electric eel (duab yuav pom nyob rau hauv no tsab xov xwm) no belongs rau cov hoob kawm ntawm bony ntses ntawm lub tsev neeg Electric eels. Nws phem nyob rau hauv nruab nrab thiab txo Amazon tributaries thiab me me dej ntws nyob rau hauv lub northeast ntawm South America. Qhov no loj ntses, nws nruab nrab ntev ntawm los ntawm 1 mus rau 1.5 m, tab sis tseem muaj peb-meter ib tug neeg uas 40 kg.

Pob txuv yog electrically bescheshuychatoe, liab qab serpentine lub cev, uas yog them nrog ib tug nyias txheej ntawm slime thiab ib tug rear feem dog dig laterally compressed. Xim yuav hu ua camouflage. Nyob rau hauv cov tub ntxhais tsiaj nws yog uniform, txiv-xim av, thaum tus neeg laus muaj ib lub ci txiv kab ntxwv xim nyob rau hauv underside ntawm lub taub hau thiab lub caj pas. Ob lub qhov muag yog me me, nyob rau hauv lub qhov ncauj yog ib tug kab me me hniav. Ventral thiab dorsal fins yog tsis tuaj kawm ntawv, cov pectoral heev me me, tsuas muaj ib tug zoo-tsim qhov quav tis ntses. Nrog nws pab, zoo float nyob rau hauv tag nrho cov lus qhia hluav taws xob eel. Ntses qhov chaw - rau hauv qab ntawm tus dej, qhov chaw uas nws prefers mus nkaum cov seaweed. Muaj kuj yuav tsum ntes eel.

Feem ntau nyob rau hauv nws vaj tse cov dej nro, medlennotekuschie muaj tsawg heev oxygen cov ntsiab lus. Yog li ntawd, cov ntses muaj kev tshwj xeeb qhov ncauj ntawm tus vascular cov ntaub so ntswg chaw, tso lawv los nqus cua los ntawm lub atmospheric oxygen. Nyob rau hauv lwm yam lus, hluav taws xob eels yuam los ntawm lub sij hawm rau lub sij hawm rau ob peb feeb mus rau sawv rau cov dej saum npoo yuav tau txais cov huab cua ntshiab feem.

Yog vim li cas lawv hu ua hluav taws xob? Lub fact tias cov hom yog peev xwm los tsim hluav taws xob ntswg. Feem ntau, ib tug xws li pawg no 350, tab sis tshwj xeeb tshaj yog loj loj cov neeg muaj peev xwm sawv ntawm generating voltages mus txog 650 V, uas yog txaus ntshai txawm mus rau tib neeg. Yuav ua li cas no tshwm sim? Electric eels muaj ib tug tshwj xeeb kev hloov uas yuav siv sij hawm li feem ntau ntawm lawv lub cev thiab yog muaj li ntawm tshwj xeeb hlwb. Lawv muaj kev cob cog rau txhua lwm yam nyob rau hauv sib law liag thiaj ceg ntawm qab haus huv. Plus nws yog nyob rau hauv pem hauv ntej ntawm lub cev, thiab nyob rau hauv lub rov qab - rho tawm. Tsis muaj zog hluav taws xob nqi generated thaum pib ntawm lub cev, thiab los ntawm tus kawg ntawm txoj kev uas lawv yuav ntxiv ua ke, thiab lawv lub hwj chim qab los ntawm ob peb lub sij hawm. Qhov no ntses yog tseem hu ua ib tug nyob roj teeb.

Lub paug loj nrws yog tau hab nuv txawm ib tug khoom nrog sib ntaus. Txawm hais tias nws yog tsim nyog sau cia hais tias hluav taws xob eels pub tsuas yog nyob rau me me ntses. Yog li ntawd yog dab tsi lawv yuav tsum tau xws hwj chim? Nws yuav tsum tau hais tias qhov no hom ntawm hnub yog tseem tsis zoo paub, piv txwv li, tseem tsis tau paub yuav ua li cas lawv cov me nyuam. Thiab xws ntswg no tej zaum yuav tsim nyog rau nws tus kheej-muaj txuj ci, vim hais tias lawv siv rau kev yos hav zoov mus txog rau 300 V. slaying xav tsis thoob thaum los yog li ntses, eels nws txo qis nws mus rau hauv pem teb thiab nws nqos nws tag nrho.

Nyob rau hauv tas li ntawd mus rau cov hluav taws xob kabmob, nyob rau hauv no hom ntawm pob txuv yog ib tug ntau ntxiv, uas plays locator. Nrog nws pab nrhiav ntses emit tsawg zaus ntswg. Lawv rov qab los ntawm pem hauv ntej yog obstacles thiab tau ntau lawm thiab yog li, pob txuv tau cov ntaub ntawv tsim nyog rau lawv. Lawv rog tau tsis muaj lus ceeb toom thiab txawm nyob rau hauv cov ntaub ntawv ntawm kev txaus ntshai, tsis txhob khiav. Yog li ntawd, yog tias nyob rau hauv koj txoj kev muaj yog ib tug eel-li, nws yog zoo dua ua ntej mus muab txoj kev, tshwj xeeb tshaj yog loj loj nrws. Tej zaum nws hluav taws xob paug yuav tsis tua koj, tab sis poob nco qab ntawm nws, tej zaum koj yuav zoo tau. Yog li ntawd nws yuav zoo dua rau thim rov qab mus rau ib tug muaj kev ruaj ntseg deb.