Isibungu Sasendulo SaseSiberia Saphinde Saphila Ngemva Kweminyaka Engu-46,000, Futhi Yaqala Ukuzala!

Umbiko ovela ku Washington Post yachaza ngokuningiliziwe okutholwe ososayensi okumangalisayo: isikelemu esincanyana wesifazane sasigcinwe endaweni ehlala iqhwa yaseSiberia iminyaka engu-46,000, futhi lapho besivuselela, isidalwa saqala ukuzalana nge-parthenogenesis - inqubo engadingi umngane womshado.

Isibungu sasendulo saseSiberia saphinde saphila ngemva kweminyaka engu-46,000 1, futhi saqala ukuzala! XNUMX — Indawo yocwaningo: a) indawo ye-Duvanny Yar outcrope eMfuleni i-Kolyma, enyakatho-mpumalanga yeSiberia, eRussia. b) Ukubuka kwengxenye engenhla ye-outcrop eyenziwe ngamacezu eqhwa kanye namadiphozithi anodaka lwe-permafrost. c) uhlelo lwe-lithostratigraphic lwamadiphozithi, olubonisa indawo yokubolekwa kwegundane elifundisiwe (umbuthano obomvu). d) umgodi wamagundane ensalela onodoti onama-herbaceous kanye nembewu egqitshwe endaweni ehlala iqhwa; (m arl = amamitha ngaphezu komfula). I-PLOS genetics

The I-University of Hawaiʻi e-Mānoa's ukukhululwa kwabezindaba kuxoxwe ngesidalwa esasisesimeni eside esibizwa ngokuthi i-cryptobiosis izinkulungwane zeminyaka. Lesi simo, esingagcinwa isikhathi eside, simisa zonke izinqubo ze-metabolic, okuhlanganisa ukuzala, ukuthuthukiswa, nokulungiswa.

In the Iphephabhuku le-PLOS Genetics eshicilelwe ngoLwesine, abacwaningi bakhombe uhlobo olusha lwesikelemu ngokulandela ukulandelana kofuzo lwazo. Baveze ukuthi lesi sikelemu besingakacaciswanga phambilini.

Kusanda kubikwa ngabakwa Isayensi Ebukhoma ukuthi i-nematodes njenge I-Plectus murrayi futhi I-Tylenchus polyhypnus yayivuselelwe kusukela ku-moss ne-herbarium specimens ngemva kwamashumi ambalwa eminyaka. Izinhlobo ezintsha, I-Panagrolaimus kolymaensisNokho, kwase kungamashumi ezinkulungwane zeminyaka elele ubuthongo.

Isibungu sasendulo saseSiberia saphinde saphila ngemva kweminyaka engu-46,000 2, futhi saqala ukuzala! XNUMX — Insikazi yohlobo lwe-P. kolymaensis ine-morphology evamile eboniswe lapha. I-PLOS genetics

UHolly Bik, isazi sezinto eziphilayo ezijulile zasolwandle, ukholelwa ukuthi izigidi zezinhlobo ezihlukahlukene zezibungu ze-nematode zingatholakala ezindaweni ezihlukahlukene, njengemisele yolwandle, ama-tundra, ogwadule, nenhlabathi enentaba-mlilo. Noma kunjalo, kulezi, izinhlobo zasolwandle ezingu-5,000 kuphela eziye zabhalwa abacwaningi.

UCrow, udokotela wezifo ezithinta izinambuzane waseNyuvesi yaseFlorida owayengaxhunywanga ocwaningweni, uphakamise ku-Post ukuthi lesi sikelemu singaba uhlobo olwanyamalala eminyakeni engu-50,000 edlule.

UCrow uphawule wathi kungenzeka ukuthi i-nematode yilena okusamele ichazwe, njengoba ihlangana njalo.

Sekuyisikhathi eside ososayensi beqaphela ukuthi izidalwa ezincanyana, njengaleso esihloliwe, zinamandla okuyeka ukusebenza ukuze zibekezelele ngisho nezimo ezimbi kakhulu, yingakho singamangali ngokusinda kwesibungu kuyo yonke leyo minyaka, njengoba kushiwo. ekukhululweni kwabezindaba.

The Iphepha le-PLOS Genetics waphetha ngokuthi i-nematodes inamakhono angenza ikwazi ukuphila isikhathi eside se-geological.

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