Ava Williams
Nakwiqondo lobushushu lasebusika eliqhaqhazelisa amazinyo, izinja ziyakwazi ukuchukumisa umhlaba ngamathupha azo ngaphandle kokubethwa yingqele. Baye baphumelele ngenxa yesifudumezi esiphucukileyo, bacacisa abaphandi baseJapan kwijenali ye “Veterinary Dermatology”. Isebenza njengenkqubo yokutshintshiselana kobushushu: igazi elifudumeleyo, elingenayo lifudumeza igazi elibuyayo kwiimpuphu, ligcina inja ishushu kwaye amanqina ahlala epholile.
Impompo yobushushu kwithupha
Besebenzisa i-electron microscopy, abaphandi bafumanise ukuba imithambo kunye nemithambo emathupheni enja isondelelene ngokubonakalayo. Oku kuvumela ubushushu obuvela kwigazi elineoksijini kwimithambo ephuma entliziyweni ukuba idlulisele ngokulula kwigazi eline-deoxygenated kwimithanjana ebikhe yadibana nomphezulu obandayo. Igazi elisuka emithanjeni libuyela umva lifudumale liye kutsho entliziyweni yenja kwaye ukusuka apho ukuya kumbindi wegazi.
Umgaqo we dolphin kunye nedada
"Kwakungaziwa ngaphambili ukuba inja isebenzisa ukutshintshiselana kobushushu," kusho uThomas Ruf ovela kwiZiko loPhando lwe-Wildlife Ecology eVetmeduni Vienna. Kwezinye izilwanyana, nangona kunjalo, i-phenomenon iyaziwa - umzekelo kwihlengethwa, eyisebenzisayo kwi-fin, kwinja kunye neempumlo zenyamakazi, kunye nakwinyawo ledada. Kungenjalo, amadada ebenokunyibilika ukuba ebenokuma emkhenkceni ixesha elide. Yiloo ndlela abagcina ngayo ubushushu bonyawo lwabo kwidigri engu-zero.”
Izilwanyana zineqhinga elikhethekileyo lokubulela into yokuba i-tissue ayibonakali. “Ukwakheka kwamalungu achaphazelekayo omzimba kuyatshintsha ngokuxhomekeke kwixesha lonyaka. Ekwindla, izilwanyana zigcina i-mono- kunye ne-polyunsaturated fatty acids ngakumbi njenge-oyile yentlanzi, ezenza zikwazi ukuziqhelanisa ngokufanelekileyo, "uchaza uRuf. Izilwanyana eziya ku-hibernation ziphumelela ukulungelelanisa umzimba wonke ngokomgaqo ofanayo. Ekwindla, umzekelo, i-marmots ijonge ngokukodwa izityalo ezinamafutha angaxutywanga - kwaye ebusika abanayo ingxaki yokupholisa ukuya kuma-degrees amabini ngokubanzi.
Ezinye izinja azifakwa ebusika
Ngokomgaqo ofanayo nakwingcuka yesinyanya, iqondo lobushushu lezinja lehla liye kutsho ku-zero xa kubanda. Nangona kunjalo, oku akusebenzi kuwo wonke umntu uhlobo lwenja. Inkokeli yophando ithi: “Ezinye izinja azikufanelanga ukuba nekhephu nomkhenkce kuba ziye zafuywa ngenxa yezinye iimpawu. Kule meko, ekhethekileyo iibhutsi zasebusika kuba izinja zinganceda. Banikezela ukufakwa okongeziweyo kwaye abanikezeli kuphela ukukhuselwa kubanda, kodwa nakwityuwa yendlela kunye negrit.