Umbala wamehlo unikezwa yi- Amagugu ezofuzo, lapho amehlo ephilile ngokuphelele anombala ofanayo ngamunye. Amehlo ezingane ezincane ngokuvamile anombala ompunga noma ophuzi ngokuluhlaza okwesibhakabhaka futhi cishe eminyakeni eyisithupha kuya kwengu-6 ubudala lapho ukwakheka kombala wangempela kwenzeka.
Kakhulu, abantu nezilwane banamehlo ansundu, ngenkathi bambalwa kuphela abanamehlo aluhlaza okwesibhakabhaka noma aluhlaza. Ingxenye yeso ekhombisa umbala ibizwa ngokuthi iris futhi amacala angenzeka lapho amehlo enombala ohlukile ngamunye, lokhu lo mkhuba waziwa njenge-heterochromia. Lokhu kukhubazeka okuncane kuvame kakhulu ezilwaneni, izinja, amakati ngisho namahhashi angaba namehlo ahlukene ngombala ngamunye.
Izinhlobo ze-heterochromia
Kunezinhlobo ezimbili ze-heterochromia ezingenzeka ngokuya ngezimbangela ezingabekwa icala ngaleli phutha.
I-heterochromia engaphelele: iso elilodwa linamathoni ombala ahlukile.
Qedela i-heterochromia: amehlo anemibala ehluke ngokuphelele.
I-heterochromia engokwemvelo: lokhu kwenzeka lapho kutholwa izakhi zofuzo.
I-heterochromia etholakalayo: kubangelwa noma kungenzeka ngesifo esithile noma ukuhlukumezeka.
Lokhu kukhubazeka akusona isimo esithinta umbono futhi akuvamile kakhulu ukuthi i-heterochromia ephelele yenzeke kumuntu. Ngakho-ke kule ndatshana sikhuluma ezinye izinhlobo zezinja ezinamehlo anemibala emibili ehlukile, njengoba abantu abaningi bekuthola kuthakazelisa futhi bakhangwa yileli phutha elihle.
Ezinja kunezinhlobo eziningi ezingaba ne-heterochromia ephelele. Singasho phakathi kwabo ku- USuskyan Husky (Kwamanye amazwe yaziwa nangokuthi impisi yaseSiberia ngenxa yokufana kwayo nalesi sihlobo sasendle), iCatahoula kanye ne-Australian Shepherd.
Izinhlobo zezinja ezinalesi senzo emehlweni azo, zivame ukuba neso eliluhlaza okwesibhakabhaka kanti esinye sinsundu futhi ngukuthi lapho iris yeso iluhlaza okwesibhakabhaka, kwenzeka ngokusebenzisa Gen MerleLesi sakhi sofuzo yiso esinikeza lokho kudla futhi sinesibopho sombala emakhaleni ezinja okuthiwa i-butterfly.
Ngokulandelayo, kungaba imbangela ye- i-heterochromia engaphelele, isibonelo, umbala omncane onsundu ungabonakala ngaphakathi kombala wamehlo aluhlaza okwesibhakabhaka. Singabona isakhi sofuzo seMerle esikhona ezinhlotsheni ezinjenge-Australian Shepherd, iBorder Collie kanye nePembroke Welsh Corgi, futhi lokhu akusho ukuthi laba bangane be-canine abasakhangi kubantu, kunalokho ibaguqula babe yizilwane ezinezici kunokuba eziningi zingahluka.
Ngokuphathelene ne-heterochromia engaphelele, kunezinhlobo zezinja ezingaba nalolu hlobo lwesici, lapho iso elilodwa linemibala emibili ndawonye, okungukuthi, lingaba nemibala eminingi. Phakathi kwabo singabala iBorder Collie, iPembroke Welsh Corgi, iSheepdog yase-Australia neGreat Dane.
Lapho lokhu kuhluka kombala kubonakala ku-iris yezinja ezikhiqizwa ngofuzo lukaMerle, kungenxa yokuthi lokhu kunciphisa i-pigmentation, okungukuthi, ukulahleka kombala kwenzeka.
Ezinye izinhlobo zezinja esingasho ukuthi zivele zibe neHeterochromia yi-English Cocker Spaniel, iPit Bull Terrier, iFrench Bulldog, iBoston Terrier kanye neDalmatia.
Ngaphezu kokukhuluma ngezinja ezinamehlo anemibala emibili ehlukene futhi kungani lokhu kwenzeka? Singasho futhi izinganekwane ezikhona ngalesi simo esihle, ngoba bekukholelwa ukuthi lezi zinja zivikela isintu, ngokusho kwezindaba. Amehlo ahlukahlukene anemibala (heterochromia) bavikela abantu, kanti labo abanamehlo ansundu babevikela imimoya.
Ngakolunye uhlangothi, ama-Eskimo akholelwa ukuthi izinja zezihlibhi ezinalesi sici zazikwazi ukugijima ngokushesha.