Kafukufuku, wochitidwa ndi gulu la asayansi ochokera ku Rey Juan Carlos University ndi National Museum of Natural Sciences (MNCN-CSIC), adayesa kuyesa ngati mbalame zimatha kusintha mtundu wawo kuti zigwirizane ndi chilengedwe. “Mwachindunji, tidayesa ngati mpheta zapanyumba, Passer domesticus, zimasintha mtundu wawo zikakumana ndi chinyezi chosiyanasiyana. Kuti tichite izi, tidawulula mbalamezi kumalo awiri okhala ndi chinyezi chosiyana (chonyowa ndi chowuma) miyezi isanu ndi umodzi isanafike nyengo yophukira, ndipo nthengazo zitasefukira, timayesa mtundu wa nthenga zomwe zidangopangidwa kumene, "adatero Isabel López Rull. Wofufuza wa URJC komanso wolemba nawo kafukufukuyu.
Kuphunzira za kusintha kwa morphology, physiology ndi khalidwe la zamoyo monga ntchito ya kutentha ndi chinyezi mikhalidwe ya chilengedwe chawo n'kofunika pamene kutanthauzira panopa biogeographic machitidwe monga kusanthula zotheka kusintha kwa nyengo. Komabe, ngakhale kuti kafukufukuyu ndi wofunika kwambiri, pali maphunziro ochepa okhudza kusiyana kwa mitundu potengera nyengo ya nyama zakuthengo, ndiko kuti, zomwe zimatha kuwongolera kutentha kwa thupi kudzera mu metabolism, monga mbalame ndi nyama zoyamwitsa.
Zotsatira za kafukufukuyu, zofalitsidwa m’magazini ya sayansi yotchedwa Scientific Reports, zimasonyeza kuti ali ndi mphamvu yosintha mtundu wawo chifukwa cha kusintha kwa chilengedwe. “Mpheta zomwe zinkanyowa zinkakhala ndi nthenga zakuda kuposa za m’mpheta zouma. Chotsatira chathu chinapereka umboni wosatsutsika wosonyeza kuti kuthekera kwa mbalame kusintha mtundu wawo kungakhale kothekera kutengera nyengo ya nyama zakuthengo,” akutsindika wofufuza wa MNCN Juan Antonio Fargallo.
Malamulo a Gloger
Lamulo lachikale lomwe limagwirizanitsa mitundu ya nyama zomwe zimatha kutentha ndi nyengo ndi lamulo la Gloger, lomwe limaneneratu za anthu akuda (omwe ali ndi utoto wochuluka mu nthenga kapena ubweya) m'madera otentha ndi a chinyezi. Pachifukwa ichi, mfundo yofunika kwambiri kuti mumvetse momwe chiphunzitsochi chimakhalira mwina ngati ma endotherms amatha kusintha mtundu potengera kutentha ndi chinyezi. Monga mmene Isabel López Rull analongosolera: “Ngati nyama ya m’mlengalenga imatha kusinthasintha maonekedwe ake ndipo chinyezi chimachititsa kuti mdima ukhale wodetsedwa, monga momwe amanenera lamulo la Gloger, mbalame zokhala m’malo achinyezi zingakhale zakuda kwambiri kuposa mbalame.” ”.
Kutengera lingaliro ili, zoyeserera zomwe zidachitika ndi han zidawonetsa kuti mitundu ya nthenga poyankha chinyezi imagwirizana ndi zomwe Gloger adaneneratu.
Kuti akwaniritse zitsimikiziro izi, nthawi ya chithandizo choyesera idayenera kukhala miyezi isanu ndi umodzi kuti athe kuphimba nthenga - zomwe mpheta zidachitika pakati pa Julayi ndi Seputembala - ndikutsimikizira kuti kumapeto kwa chithandizo mbalame zonse zidapangidwa. nthenga zatsopano "Pambuyo pa miyezi isanu ndi umodzi chiyambireni chithandizo, tidayeza mitundu ya nthenga m'malo osiyanasiyana a thupi pogwiritsa ntchito spectrophotometer ndi zithunzi za digito. Kumapeto kwa kuyesako, mbalamezi zinamasulidwa kumalo omwe anagwidwa, "akutero wofufuza wa URJC.
Ntchitoyi inali gawo la ntchito yofufuza "Kusiyanasiyana kwa chilengedwe mu mtundu wa melanic: njira yoyesera njira zomwe zimayendera ulamuliro wa Gloger", wofufuza wamkulu ndi Isabel López Rull.
