Hungwaru hwemapararoti nemakunguwo hunopfuura hwetsoko

chinyorwa “Parrot yakangwara” takadzidza marudzi akati kuti eshiri idzi dzinoshamisa uye takasvika pamhedziso yokuti ungwaru hweshiri hahuna kunyatsoongororwa, sezvo shiri dzichiri kutishamisa nemaitiro adzo uye kukwanisa kubata panhunzi.

Pasinei nenyaya yekuti shiri dzinenge dzakakwanisa kuita semaprimates, uye huropi hwadzo hwakakura sehudyu, zvagara zvichiratidzwa kuti shiri hadzina cerebral cortex yakagadziridzwa semhuka. Asi izvi hazvidziviriri maparrots makuru uye corvids kubva mukurova vanhu nehunyanzvi hwavo hwenjere.

Mhinduro iri mukuwanda kwetsinga. Izvi zvakataurwa mukubudiswa kwemagazini yacho Nyaya dzeNational Academy yeScience yeUSA.

Chikwata chemasayendisiti kubva kuVanderbilt University, pamwe nevanoshanda navo kubva kuCharles University kuPrague uye vaongorori kubva kuYunivhesiti yeVienna, vachitungamirwa naSusanne Herculano-Hosel naPavel Nemech, vakaongorora huwandu hwemaneuroni muuropi sampuro dze28 marudzi eshiri uye vakaenzanisa mhedzisiro nehuwandu hwemaneuron muhuropi hwemhuka. Zvakaonekwa kuti muuropi hweshiri dzinoimba neparrot, kuwanda kwetsinga dzinopetwa nekaviri, uye kana kuchienzaniswa nemakonzo, ipapo 4!

Sampuli dzehuropi dzakatorwa dzehukuru hwakafanana nekuparadzaniswa kweanatomical, kuverenga huwandu hwesero hwemasero mukumiswa kubva mutsinga.

Vatsvakurudzi vakakwanisa kuratidza kuti ne cortex inorema 14,4 gramu mu macaw, nhamba ye neuroni ndeye 1,9 bhiriyoni, nepo mu macaques, ine huremu hwehuropi hwe69,8 gramu, chete 1,7 bhiriyoni.

Huwandu hwakakura kudaro hwemaneuroni mune vhoriyamu diki yakakonzera kurongeka kwadzo. Ukuru hwemasero etsinga eshiri hudiki zvikuru pane hwemhuka dzinoyamwisa, maitiro acho mapfupi, uye masinapsesi akanyanya kusimba. Izvi ndizvo zvinoita kuti shiri dzibatanidze huremu hudiki kuti dzikwanise kubhururuka nehunyanzvi hwekuziva hunopfuura hwemakonzo nemaprimates.