Cav cw thiab cav ntses tsis…vim lawv tsis muaj qhov muag. Kev txuag hluav taws xob qhov muag, lossis qhov kev xav ntawm cov ntaub so ntswg kim, yog ib qho ntawm ntau txoj kev xav los piav qhia vim li cas cov tsiaj pom uas coj lub neej hauv qhov tsua hloov mus rau qhov muag tsis pom.
Vim li cas cavefish tsis muaj qhov muag?
Qhov tseeb tias cov ntses hauv qhov tsua tsis siv lawv lub qhov muag tsis muaj txiaj ntsig rau lawv cov noob. Hloov chaw, cov ntses hauv qhov tsua yog qhov muag tsis pom vim muaj qee yam tshwm sim rau cov noob uas tswj kev txhim kho ntawm lawv ob lub qhov muagQhov kev hloov pauv no tau dhau los ntawm niam txiv mus rau cov xeeb ntxwv. Qhov ntawd piav qhia tias yog vim li cas ib tug ntses dig muag yuav muaj cov xeeb ntxwv dig muag.
Cavefish pom li cas?
Mexican dig muag cavefish tsis muaj qhov muag, tab sis nws tuaj yeem " pom" obstacles hauv qhov tsua tsaus nti los ntawm nws lub qhov ncauj thiab ua kom tawg ntawm suction, raws li kev tshawb fawb tshiab. Cov kev tshawb fawb piav qhia txog qhov tshwj xeeb ntawm kev taw qhia thawj zaug.
Yuav ua li cas dig muag qhov tsua ntses poob qhov muag?
dig muag cavefish (Astyanax mexicanus) poob cov ntaub so ntswg qhov muag tsis pub dhau ob peb hnub tom qab lawv qhov muag pib tsim. Raws li kev tshawb fawb tshiab, qhov poob ntawm qhov muag cov ntaub so ntswg tshwm sim dhau ntawm epigenetic ntsiag to ntawm lub qhov muag cov noob.
Vim li cas Mexican qhov tsua ntses dig muag?
Astyanax mexicanus. Qhov muag tsis pom qhov tsua ntses them nyiaj rau lawv qhov tsis pom los ntawm kev muaj cov kab ke rhiab dua sab nraud uas pom kev vibrations lossis kev hloov pauv hauv cov dej. Cov kab sab nraud yog ib lub cev tshwj xeeb uas pom muaj nyob hauv cov ntses.
