Cov txheej txheem:
Video: Vim Li Cas Cats Ciaj Cawv Thiaj Li Xaiv Tau Cov Khaub Ncaws?
2024 Tus sau: Daisy Haig | [email protected]. Kawg hloov kho: 2023-12-17 03:09
Yog tias koj lub tsev yog dab tsi zoo li kuv li, hnub so seem noj seem hla lub tub yees. Vim li cas ho tsis faib cov nyiaj thiab muab koj cov miv rau ib tug kho?
Hmoov zoo nrog ntawd! Cov kws tshawb fawb tab tom pib mus rau hauv qab ntawm tsuas yog vim li cas miv thiaj tuaj yeem ci ntsa iab.
Cov teb uas tsw iab rau tib neeg… tau raug tsis lees paub thoob plaws hauv lub nceeg vaj tsiaj. Nws tau xav tias kev tsis lees paub yog nyob ntawm kev sib nrig sib ntawm cov nroj tsuag uas tsis xav "noj" kom tau noj thiab cov tsiaj uas tsis xav tau "xum" kom lom.
Yog li vim li cas thiaj yuav ua rau cov tsiaj ua haujlwm zoo li miv nyeg tseem muaj ntau cov noob ua haujlwm uas tso cai rau lawv saj (thiab zam tsis dhau) cov khoom iab?
Ua ntej, nws tuaj yeem yog tias txawm tias lav cov carnivores xws li cov miv tau nthuav tawm cov khoom cog los ntawm kev noj cov neeg raug mob uas yog cov tsiaj cog los ntawm cov neeg raug tsim txom. Muaj ob qho lus sib cav tawm tsam qhov no muaj lub luag haujlwm tseem ceeb. Ua ntej, cov nroj tsuag noj los ntawm cov neeg raug tsim txom tsis yog iab thiab muaj kuab lom vim tias cov tsiaj prey tau noj lawv tus kheej. Txawm li cas los xij, qee hom tsiaj tau hloov pauv kev txhim kho hauv kev pabcuam ua rau lawv haus cov nroj tsuag muaj tshuaj lom (piv txwv, koala [Phascolarctos cinereus] pub rau ntawm cov ntoo ntawm eucalyptus hom, uas feem ntau tsis lom rau cov tsiaj feem ntau) [30]. Thib ob, qhov nquag uas carnivores ua tau noj cov khoom cog hauv prey viscera yog qhov tsis meej thiab nws tau tshaj tawm, tsawg kawg rau hma, tias cov khoom no cog zam [31].
Lwm qhov laj thawj ntawm kev saib xyuas cov tshuaj khib thiab muaj nuj nqi hauv cov miv thiab kab tias lwm cov ntoo ua kom yuag yog tias tseem muaj cov tebchaw nyob hauv ntau cov khoom tsis raug tsob ntoo nyob hauv cov tsiaj cov zaub mov noj (tab sis saib cov ntawv [5]). Piv txwv li, cov miv hauv tsev yog paub tias pub rau cov tsiaj cov tsiaj uas tseem muaj peev xwm iab thiab lom xws li cov kua tsib kua qaub, lub cev thiab tawv nqaij ua kom tawm ntawm arthropods, cov tsiaj reptiles thiab amphibians [32]. Yog li peb cov kev soj ntsuam tias cov quav txais hauv miv thiab feem ntau yuav muaj lwm tus neeg nyob hauv thaj chaw Carnivora ua haujlwm yog vim muaj kev xaiv kom raug txim tias kev siv cov tshuaj lom neeg muaj tsawg.
Ib qho laj thawj thib peb yog vim li cas tus naj npawb ntawm cov iab saj yuav tsis raug cuam tshuam los ntawm cov khoom noj ntawm cov nroj tsuag muaj feem cuam tshuam rau qhov ua tau tsis-lub qhov ncauj ntawm cov receptors. Kev rov qab hnov mob yog nrhiav tau nyob rau hauv xov tooj ntawm tes hom uas tsis yog saj ntawm tus nplaig. Nkag mus rau lub ntuj ligands [cov roj uas khi rau lwm qhov] tsis paub txog cov haujlwm no, tab sis peb qhia tias lawv yuav yog ib qho tseem ceeb hauv kev tswj kom muaj nuj nqis nyob rau hauv hom uas yuav tsis yog “xav tau” lawv kom zam kev cog ntoo los yog tsiaj-co toxins. Piv txwv li, cov pa tshuaj tiv thaiv ua pa nyuaj yog qhov tseem ceeb rau kev tiv thaiv kev tiv thaiv kab mob rau cov kab mob [33–35].
Txawm li cas los xij, nws yog qhov tseem ceeb rau peb kom nco ntsoov tias miv tsis txaus siab rau tej yam qab zib thiab raug kho kom tsis txhob muaj kev ntsim siab, uas tej zaum piav qhia tias vim li cas lawv tsuas xav noj cov nqaij uas tseem tshuav.
Dr. Jennifer Coates
Kev siv
Cov Kev Ntsuam Xyuas Ntawm Qhov Ntshuam Qav Tseeb Receptors hauv Miv Hauv Tsev (Felis catus). Lei W, Ravoninjohary A, Li X, Margolskee RF, Reed DR, Beauchamp GK, Jiang P. PLoS Ib. 2015 Oct 21; 10 (10): e0139670. doi: 10.1371 / journal.pone.0139670. eCollection 2015.
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