UMary Allen
I-salmon yizinhlanzi. Ikakhulukazi zihlala olwandle olukhulu, okuwuLwandlekazi i-Atlantic noma iPacific Ocean. I-salmon ingakhula ibe amasentimitha ayi-150 ubude futhi ibe nesisindo esingamakhilogremu angama-35. Zidla izinkalankala nezinhlanzi ezincane.
Kunezinhlobo eziyisishiyagalolunye ezahlukene ze-salmon ezihlangene zakha umndeni wezilwane. Zonke ziphila ngokufana kakhulu: zithola ukuzalwa emfudlaneni, futhi kamuva zibhukuda olwandle. Kukhona okuhlukile, okuyi-salmon yase-Danube. Uhlala emfuleni njalo.
Wonke amanye ama-salmon achitha ingxenye ephakathi yokuphila kwawo olwandle. Nokho, banenzalo yabo emfudlaneni. Ukuze zenze lokhu, zibhukuda zisuka olwandle ziye emifuleni emikhulu ehlanzekile. Ngezinye izikhathi unqoba izithiyo ezinkulu ngale ndlela, isibonelo, izimpophoma. Insikazi izalela amaqanda ayo eduze komthombo. Eyeduna iphinde ikhiphe ama-sperm cells ayo emanzini. Yilapho ukuvundisa kwenzeka khona. Ngemva kwalokho, ama-salmon amaningi afa ngenxa yokukhathala.
Ngemva kokuchanyuselwa, amaphuphu ahlala emfudlaneni unyaka owodwa kuya kwemibili. Ngemva kwalokho, i-salmon esencane ibhukuda olwandle. Lapho, zikhula iminyaka embalwa bese zibhukuda ziye emfuleni ofanayo. Bathola wonke amajika, ngisho nasemifudlaneni emincane, futhi ekugcineni, bafika endaweni abazalelwa kuyo. Lapho ukuzala kwenzeka futhi.
I-Salmon ibaluleke kakhulu emvelweni. Izinhlobo ezingaphezu kuka-200 zezilwane zidla i-salmon. Ngokwesibonelo, ibhere elinsundu e-Alaska, kumelwe lidle ama-salmon angamashumi amathathu ngosuku ekwindla ukuze libe namafutha anele emzimbeni walo ukuze liphile ebusika. I-salmon efile ngenxa yokukhathala iba umanyolo, ngaleyo ndlela idla izilwane ezincane eziningi.
Nokho, emifuleni eminingi ama-salmon asephelile ngenxa yokuthi aye adotshwa kakhulu nangenxa yokuthi kuye kwakhiwa amadamu emifuleni. Cishe ngo-1960 i-salmon yokugcina yabonwa eJalimane naseBasel, eSwitzerland. Kunemifula eminingana eYurophu lapho kuye kwakhululwa khona ama-salmon asemasha kweminye imifula ukuze i-salmon iphinde ibe yindabuko. Izitebhisi eziningi zezinhlanzi zakhiwe emifuleni ukuze zikwazi ukunqoba izimboni zokuphehla amandla. Ngo-2008, i-salmon yokuqala yaphinde yatholakala e-Basel.
Kodwa-ke, ama-salmon amaningi ezitolo zethu ezinkulu awaveli endle, aye afuywa. Amaqanda avundisiwe akhuliswa emanzini amasha ezitsheni kanye namathangi akhethekile. Khona-ke ama-salmon athuthelwa emigodini emikhulu olwandle. Lapho kufanele ubaphakele izinhlanzi, okufanele futhi uzibambe olwandle kusengaphambili. Izinhlanzi ezifuywayo ngokuvamile zidinga imithi eminingi ngoba i-salmon ihlala endaweni encane.