Ntxhais kawm ntawv: vim li cas thiaj zoo li no?

2024 Tus sau: Priscilla Miln | [email protected]. Kawg hloov kho: 2024-02-18 01:46

Yuav luag txhua tus tau pom ib tug tshis ntawm qee lub sijhawm hauv lawv lub neej. Tab sis tsis tshua muaj leej twg muaj lub siab xav saib rau hauv nws lub qhov muag. Thiab yog tias lawv saib, lawv yuav muaj kev xav tsis thoob thaum lawv pom cov duab ntawm cov menyuam kawm ntawv. Nyeem ntawv kom paub seb cov menyuam tshis yog dab tsi thiab qhov tshwj xeeb ntawm lawv.

Pupil shape

Feem ntau cov neeg xav tias cov menyuam kawm ntawv ntawm txhua tus tsiaj yog puag ncig. Qhov kev xav no yog tsim los ntawm kev sib piv nrog tib neeg lub qhov muag. Tab sis qhov no tsis yog li ntawd, nyob rau hauv ntau yam tsiaj cov menyuam kawm ntawv muaj ib tug txawv kiag li cov duab, piv txwv li, cov menyuam kawm ntawv ntawm ib tug tshis nyob rau hauv kab rov tav.

Nyob nruab hnub, lawv zoo li qhov nqaim. Thaum dilated, cov tshis cov tub kawm ntawv tig mus ua duab plaub.

Vim li cas peb thiaj xav tau ib tug menyuam kawm ntawv

Vim cov menyuam kawm ntawv zoo li no, tshis qhov pom lub kaum ntse ntse nce mus txog 340 degrees yam tsis xav txog qhov tig ntawm lub taub hau. Ntawd yog, thaum grazing, tshis muaj lub sijhawm los saib xyuas qhov tshwm sim yam tsis tau tsa lossis tig nws lub taub hau. Kev sib piv: ib tug neeg lub zeem muag tsuas yog 160-180 degrees nrog lub taub hau tseem.

Nyob rau nruab hnub, nyob rau hauv lub teeb muaj zog, cov tub kawm ntawm ib tug tshis yog nruj heev thiab zoo li ib tug slits. Lub constriction ntawm cov menyuam kawm ntawv pab, rau feem ntau, los tiv thaiv tshis lub qhov muag ntawm lub hnub lub rays. Nrog rau qhov tshwm sim ntawm twilight thiab hmo ntuj, cov tub ntxhais kawm dilate,noj cov duab plaub. Nyob rau hauv ib chav tsaus nti heev lossis thaum tshis zoo siab heev, cov tub ntxhais kawm yog square - qhov no yog ua tiav los ntawm kev nthuav dav ntxiv rau cov tub ntxhais kawm. Cov txheej txheem no pab txhawb rau txhua tus tib yam - pom zoo hauv qhov tsaus ntuj. Ib tug tshis, zoo li lwm yam tsiaj nrog tib cov menyuam kawm ntawv, muaj peev xwm pom tau tias tus tsiaj txav mus yuav luag tom qab nws tus kheej thaum hmo ntuj. Qhov no pab cov tsiaj kom muaj sijhawm ceeb toom rau lwm tus tsiaj hauv pab tsiaj thiab nkaum, zam kev tuag.

Cov menyuam tshis muab sijhawm rau tus tsiaj kom muaj kev nyab xeeb, vim tias, yuav luag txhua qhov kev pom thiab nyiam pab tsiaj nyob, ib pab tshis tuaj yeem nyab xeeb. Thaum tus tsiaj nyeg tshwm sim hauv thaj teb ntawm qhov pom tsawg kawg yog ib tus tshis, tag nrho pab tsiaj yuav muaj sijhawm khiav tawm.

Ntxim qab kawg, nrog lub peev xwm zoo kawg li pom nyob ib puag ncig lawv thiab hauv qhov tsaus ntuj, tshis tsis tuaj yeem txiav txim qhov kev ncua deb mus rau ntau yam khoom. Cov tsiaj no tsis tuaj yeem txiav txim siab txoj kev txav mus los, vim tias lawv lub zeem muag pom kev loj hlob tsis zoo.

Ntawm qhov zoo li ntawm cov menyuam tshis

Tus menyuam kawm ntawv no tau tsim nyob rau hauv tshis thiab lwm yam artiodactyls lab xyoo dhau los. Thaum xub thawj, feem ntau, cov menyuam kawm ntawv tau puag ncig, tab sis nrog rau lub hnub tsis tu ncua, cov menyuam kawm ntawv pib nqaim. Txij li thaum cov tsiaj noj nrog lawv lub taub hau qis qis, cov menyuam kawm ntawv pib nqaim precisely nyob rau hauv kab rov tav txoj kev thiaj li yuav pab kom lawv saib lub qab ntug yam tsis tau tawg los ntawm kev pub. Maj mam, cov leeg tsim nyob rau hauv lub qhov muag uas kaw cov menyuam kawm ntawv ntawm tshis mus rau lub slit nyob rau hauv lub teeb ci.teeb. Nyob rau hauv qhov tsaus ntuj, cov leeg no so kom cov tsiaj tuaj yeem noj hmo nrog qhov pom kev zoo tib yam.

Leej twg muaj tus tub kawm ntawv plaub?

Ntawm cov tsiaj hauv tsev, cov menyuam kawm ntawv zoo ib yam yog yaj. Hauv cov qus, yuav luag tag nrho cov artiodactyls muaj cov yam ntxwv no. Ntxiv rau artiodactyls, oddly txaus, octopuses thiab mongooses kuj muaj cov tub ntxhais kawm ntawv: lawv kuj yuav tsum tau tiv thaiv cov menyuam kawm ntawv los ntawm lub hnub ci ci rau lub neej hmo ntuj. Yog lawm, thiab tswj lub qab ntug rau cov kab mob no kuj yog ib txoj haujlwm tseem ceeb.

Ntau hom menyuam kawm ntawv qhia txog kev ua neej sib txawv, txawv tus cwj pwm thiab kev xav tau. Yuav kom nkag siab tias yog vim li cas thiab vim li cas cov menyuam kawm ntawv thiaj li muaj qhov sib txawv, koj tsuas yog yuav tsum txheeb xyuas qhov peb paub txog cov tsiaj nyob. Thiab tom qab ntawd cov duab plaub kab rov tav ntawm ib tug tshis, thiab cov kab ntsug ntawm cov miv, thiab cov predatory squint ntawm shark yuav ua kom pom tseeb. Koj tsuas yog xav tau qee zaum saib rau hauv lub qhov muag ntawm lwm tus tsis yog koj tus kheej.