Dukkan ya fara ne da cewa mai bincike Paul Gonzalez daga Jami'ar Stanford, tare da abokan aikinsa, sun yanke shawarar amsa wasu tambayoyin da suka shafi metamorphoses wanda ke faruwa tare da wasu dabbobin ruwa yayin da suke girma. Masana kimiyya sun lura da yadda larvae ya juya cikin manya. Kusa da gabar tekun California, ƙwararrun sun yi tuntuɓe a kan tsutsayen californicum na Schizocardium, wanda, yayin da ya juya, yana da ikon da baƙon abu. Kudancin daskararre na-daskararre na Schizocardium californicum ya juya ya zama irin shugaban manya wanda ba shi da jiki.
Tsutsa tsutsa tana ci ne akan plankton, yayin da wasu manya da ke rayuwa a saman teku suke cin ragowar sauran halittun da suka “sauka” a kansu. Masana kimiyya sun ce, a matakin narkewar dabba, ana kashe kwayoyin halittar da ke da alhakin haɓaka jikin mutum. Na karshen yana farawa ne kawai lokacin da tsutsa ya riga ya sami nauyin jikin da ake so ko kuma yana samun wadataccen abinci mai gina jiki.
Masana kimiyya ba zasu iya bayanin yadda ainihin kunna kwayoyin halittu masu alhakin ci gaban “wutsiya” yake faruwa ba. Lura da "dangi" na tsutsa - wasu Semi-chordata da suka girma "a al'ada" zasu taimake ka samun amsoshin tambayoyi.
Red dwarf
Detroit dwarf, ko kuma kamar yadda ake kiransa drayf ja, halitta ce daga almara na Faransa da Amurka, waɗanda mazauna yankin suka fada asalinsu. Wannan halitta ta tafi ga mazaunan tsakiyar yamma daga kabilar Ottawa da suka rayu kusa da birnin Detroit na gaba. An dauke shi ɗan Allah da aka yi da dutse, ya auka wa colonan mulkin mallaka.
Tun daga bayyanar garin har zuwa tarzoma a shekarar 1967, ya saba fitowa a wannan yankin. Yanzu ana ɗaukar 'ya'yan itacen gargajiya kuma baya ɗaukar kuzari mara kyau.
Tsuntsu mara fata na Chernobyl
Hadarin da ya faru a cibiyar makamashin nukiliya ta Chernobyl shine abin da bayyanar wannan sabuwar halitta ke alaƙa da ita. Wata daya kafin wannan bala'i, ta fara bayyana a cikin hanyar mutane. Wadanda suka kawo karshen wannan taron sun koka da yadda aka nuna rashin jin dadi da kiran wayar da ba a bayyana ba. Rashin afkuwar bala'in ya bayyana a lokacin hatsarin, lokacin da masu aikin ceto wadanda suka yi gwagwarmayar kashe wutar sun lura da wani babban mutum mai duhu dauke da jan idanu da wata farar fata da aka rufe da dogon gashi. Fiye da shekaru 30 sun shude, amma ba wanda ya taɓa ganin wannan dodo.
Farar fata
Wadannan halittun basu da asali na tatsuniyoyi, basa rayuwa a wasu duniyoyin, amma a Duniya a tsakanin mu, a cikin dazuzzukan daji a duniya. Farin barewa wata dabba ce mai tsinkaye wanda ke cutar da mutanen da ke haɗuwa da ita. Celts suna tunanin cewa shi manzo ne daga wasu duniyoyin, wanda tabbas ya kawo mutuwa. Britishan Burtaniya, ya yi akasin haka, sun ɗauki wannan halitta a matsayin wata alama ce ta matuƙar neman ƙarfi na ruhaniya, saboda haka, an yi imanin cewa yana da ƙyalli da ba sa barin mutane su kashe shi.
Yaren Dutch
Tun daga lokacin da al'amuran mulkin mallaka suka tashi, lokacin da samarin jirgin ruwa suka yi biris don gano asashen da ba a san su ba kuma suna da wadata a duwatsun gwal, to wannan almara ta bayyana. Mutane sun ce akwai wani jirgin ruwa dauke da matukan jirgin, waɗanda ke cikin jirgin ruwa wanda aka la'ana har abada a cikin tekuna mara iyaka. Duk wani yunƙurin sauka daga teku ya ƙare a cikin tashe tashen hankulan sojojin abubuwan da ke juyar da wannan fatarar a cikin teku. Don haka shi ne a cikin 1790, lokacin da aka gano wani mutumin Dutch mai tashi a kusa da Cape Town, wanda yanzu shine babban birnin Afirka ta Kudu.
Bala'i da mutuwa suna barazanar waɗanda suka sadu da wannan jirgin.
Yara da baƙar fata
Wataƙila wani ya taɓa haɗuwa da irin waɗannan halittun. Daga gefe, waɗannan ƙananan yara ne na yau da kullun waɗanda zasu iya fada ga kowa. Amma suna da wata ma'ana: idanunsu sun yi duhu fiye da sararin dare, suna tafiya shi kaɗai a kan hanyoyi. Da farko, sun bayyana a Ingila, amma bayan shekaru 30 sai aka lura da su a cikin Amurka, wanda a ciki akwai rahotanni da yawa na yawo.
Zasu iya zama vampires, baƙi, ko ma aljanu. Amma gaskiyar magana ta kasance: duk wanda ya ga waɗannan yaran yana cikin matsala.