Mafilimu angapo opeka asayansi ndi mabuku olembedwa atiunikira lingaliro la mmene kungakhalire kotheka kusiya kukhala ndi moyo kwa kanthaŵi kochepa popanda kugonja ku imfa, ndiyeno n’kukhalanso ndi moyo kudzawona dziko lamtsogolo. Koma chenicheni chakuti, kwa anthu m’dziko lenileni, zinthu zoterozo ndi lingaliro lokopa, lopeka. Koma panali mphutsi ziwiri mu petri-dish zomwe zinaphwanya lamulo lofunika kwambiri la chikhalidwe chathu.
Malinga ndi Nyuzipepala ya Siberia, asayansi ochokera m'mabungwe anayi aku Russia, mothandizana ndi Princeton University ku United States, adasanthula nyongolotsi zam'mbuyomu zam'madzi oundana a Arctic otchedwa nematode ndipo anapeza kuti mitundu iwiri yosiyana ya mphutsi zimenezi - zomwe zinapezeka m'madera osiyanasiyana a Siberia - zimasonyezabe zizindikiro za moyo pambuyo potsekeredwa mu ayezi kwa zaka pafupifupi 42,000!
Zotsatira zawo zozizwitsa, zofalitsidwa mu Meyi 2018 magazini ya Doklady Biological Sciences, imayimira umboni woyamba wa zamoyo zambiri zomwe zakhalanso ndi moyo pambuyo pogona kwa nthawi yayitali ku Arctic permafrost, kuyimitsa mu kuzizira kwambiri kuyambira Pleistocene.
Ngakhale ma nematodes kapena omwe amadziwika kuti mbozi zozungulira ndi zazing'ono - nthawi zambiri amafika kutalika kwa milimita imodzi - amadziwika kuti ali ndi luso lodabwitsa. Ena amapezeka kuti akukhala pamtunda wa makilomita 1 pansi pa dziko lapansi, mozama kuposa zamoyo zina zamitundumitundu. Nyongolotsi zina zomwe zimakhala pachilumba cha m'nyanja ya Indian Ocean zimatha kupanga chimodzi mwa kamwa zisanu zosiyanasiyana, malingana ndi mtundu wa chakudya chomwe chilipo. Ena amasinthidwa kuti aziyenda bwino mkati mwa matumbo a slug ndikuyenda m'misewu yamatope ya slug poop.
Pakufufuza kwawo mozama, ofufuza adasanthula zitsanzo 300 za ma depositi a Arctic permafrost, pomwe ma depositi awiri anali ndi nematode angapo osungidwa bwino. Chitsanzo chimodzi anachitola m’dzenje la gologolo pafupi ndi mtsinje wa Alazeya kumpoto chakum’mawa kwa mzinda wa Yakutia, m’dziko la Russia. Madipoziti awa akuyembekezeka kukhala zaka pafupifupi 32,000. Zitsanzo zina za permafrost zidachokera ku Mtsinje wa Kolyma kumpoto chakum'mawa kwa Siberia, ndipo ma depositi awa anali pafupifupi zaka 42,000. Iwo ankaimira mitundu iwiri yodziwika ya nematode: Panagrolamus detritophagus ndi Plectus parvus.
Ma nematodes, atachotsedwa ku permafrost, adasungunuka pang'onopang'ono m'mbale za petri ndikuyikidwa m'zikhalidwe pa 68ºF (20ºC) ndi agar ndi chakudya, ndiye zonse zomwe ofufuza amayenera kuchita ndikudikirira. Iwo anayamba kusonyeza zizindikiro za moyo, kusuntha ndi kudya pambuyo pa milungu ingapo, kupanga ichi umboni woyamba wa "cryopreservation yachilengedwe" ya zinyama zambiri, malinga ndi kafukufuku.
Komabe, nematodes sizinali zamoyo zoyamba kudzuka kuyambira zaka zikwizikwi mu kuyimitsidwa kwachisanu. M'mbuyomu, gulu lina la asayansi lidazindikira kachilombo kachimphona komwe kadatsitsimutsidwa atatha zaka 30,000 atazizira ku Siberian permafrost - ndizowopsa kungomva izi. Koma musachite mantha, amoeba ndi cholengedwa chokhacho chomwe chakhudzidwa ndi wowukira wakaleyu.
Tsoka ilo, sitingathe kufunsa nyongolotsi za zaka 40,000 kuti tifunse momwe dziko lidaliri nthawi imeneyo, koma kupenga kwamisala kumatha kumasula njira zomwe zidawathandiza kuti apulumuke kuzizira kwanthawi yayitali; kuwonetsa momwe kusinthaku kungagwire ntchito pamagulu ambiri asayansi, "monga cryomedicine, cryobiology, ndi astrobiology," ofufuzawo adamaliza.
