Kab laum vs Beetle
Ob kab laum thiab kab yog kab, thiab lawv yog ib pawg eukaryotic ntau haiv neeg ntawm cov tsiaj. Muaj ntau qhov sib txawv tseem ceeb ntawm lawv thiab cov no yog qhov tseem ceeb heev uas yuav tsum tau paub txog kev paub txog tus kab laum los ntawm kab. Kab lus no npaj siab nthuav tawm lawv cov yam ntxwv, tshwj xeeb tshaj yog cov cim tshwj xeeb tshaj plaws, thiab thaum kawg ua raws nrog kev sib piv ntawm ob.
Nyob zoo ib tsoom niam txiv kwv tij neej tsas sawv daws.
Kab laum yog ib pawg kab ntau ntau hom kab nrog ntau dua 4,500 hom, thiab lawv raug cais raws li Kev Txiav Txim: Blattodea. Muaj yim tsev neeg ntawm kab laum, tab sis tsuas yog plaub hom tau dhau los ua kab tsuag loj. Txawm li cas los xij, kwv yees li 30 hom kab laum tau nyob ib puag ncig tib neeg qhov chaw. Qhov tseem ceeb tshaj plaws ntawm cov kab laum yog tias lawv muaj peev xwm tiv taus kev puas tsuaj loj. Nyob rau hauv ib lo lus yooj yim, kab laum tsis tau ua tsis tiav ib qho ntawm cov kev puas tsuaj loj tshwm sim hauv ntiaj teb txij li thaum lawv pib 354 lab xyoo dhau los, nyob rau lub sijhawm Carboniferous. Piv nrog rau feem ntau ntawm lwm cov kab, kab laum loj nrog txog 15 - 30 millimeters ntev lub cev. Qhov loj tshaj plaws sau tseg hom yog Australian loj heev burrowing cockroach nrog txog cuaj-centimeter ntev lub cev. Lawv txhua tus muaj lub cev dorso-ventrally flattened nrog lub taub hau me me. Lub qhov ncauj tau yoog rau kev noj zaub mov txhua yam, uas yog qhov qhia txog lawv txoj kev noj zaub mov. Yog li ntawd, txhua yam uas muaj tuaj yeem yog zaub mov rau kab laum. Lawv lub hauv paus ntawm kev ciaj sia los ntawm ntau dua 350 lab xyoo tau piav qhia zoo siv lawv cov khoom noj khoom haus dav dav. Lawv muaj ob lub qhov muag loj thiab ob lub kav hlau txais xov ntev. Lub cev tag nrho tsis nyuaj li ntau kab, tab sis thawj khub tis yog tawv thiab ob khub yog membranous. Lawv ob txhais ceg muaj coxae thiab claws rau kev tiv thaiv thiab lwm yam dej num. Kab laum tuaj yeem yog cov kab tsuag loj heev tsis yog rau cov khoom noj khoom noj xwb, tab sis kuj yog cov kab mob sib kis xws li mob hawb pob.
Nyob
Beetles yog cov kab ntau ntau hom kab uas muaj ntau dua 400, 000 hom, uas suav txog ntau dua 40% ntawm tag nrho cov kab thiab 25% ntawm tag nrho cov ntaub ntawv paub txog lub neej. Beetles belongs rau qhov kev txiav txim: Coleoptera, lawv muaj peev xwm kov yeej yuav luag tag nrho cov ecosystems, thiab tau dav faib tawm tshwj tsis yog nyob rau hauv Polar Regions thiab hiav txwv. Beetles feem ntau nyob hauv cov tsiaj qus ecosystems thiab tsis pom nyob ib puag ncig tib neeg qhov chaw. Lub cev ntawm ib tug kab yog tawv nrog hardened fore tis (elytra), thorax, thiab lub taub hau. Lub hind tis yog mos thiab membranous. Lub hardened stature yog vim muaj ntau daim hlau tiv thaiv hu ua sclerites. Lawv lub qhov ncauj yog tsim los ua pincers, noj rau preys, raws li lawv yog predatory kab. Beetles tau ua tiav metamorphosis los ntawm plaub theem qe, larva, pupa, thiab neeg laus. Yog li ntawd, lawv raug hu ua endopterygotes. Txij li cov kab yog cov tsiaj nyeg ntawm lwm cov kab, qee zaum lawv yog phooj ywg ntawm tib neeg.
Dab tsi yog qhov sib txawv ntawm Kab laum thiab Kab Tsuag?
• Beetles feem ntau me dua kab laum hauv lawv lub cev qhov loj me.
• Beetles muaj ntau haiv neeg ntau dua li kab laum, thaum muaj pes tsawg hom ntawm cov pab pawg sib piv.
• Kab laum ua tsis tiav metamorphosis nrog tsuas yog peb theem, whereas beetles tau ua tiav metamorphosis nrog plaub theem hauv lawv lub neej.
• Lub cev ntawm kab laum yog dorso-ventrally flattened tab sis tsis nyob rau hauv kab.
• Beetles muaj lub cev hnyav dua li kab laum ua.
• Kab laum yog cov kws tshaj lij, tab sis cov kab yog cov khoom noj tshwj xeeb rau cov zaub mov carnivorous.
• Kab laum yog kab tsuag thaum kab kab yog phooj ywg ntawm tib neeg.
