UMary Allen
Ituna ziintlanzi ezizingelayo. Oko kukuthi, zizingela ezinye iintlanzi ukuze zizondle zona. Kwimeko ye-tuna, ezi ziquka ikakhulu i-herring, i-mackerel, kunye ne-crustaceans. Ngenxa yobukhulu bazo, ziba namarhamncwa ambalwa. Ubukhulu becala ezi zii-swordfish, iminenga ethile nookrebe.
I-tuna ihlala elwandle. Zinokufumaneka phantse kuzo zonke iindawo zemozulu, ngaphandle kwengingqi yepolar. Igama le-tuna livela kulwimi lwamaGrike amandulo: igama elithi "thyno" lithetha into ethi "ndiyakhawuleza, isaqhwithi". Oku kubhekiselele kwiintshukumo ezikhawulezayo zeentlanzi.
I-tuna inokufikelela kubude bomzimba ukuya kuthi ga kwiimitha ezimbini ezinesiqingatha. Njengomthetho, ityhuna inobunzima obungaphezu kweekhilogram ezingama-20, ezinye zide zibe ngaphezu kweekhilogram ezili-100. Kodwa ezi ziyimizekelo emikhulu kakhulu. I-tuna inomzimba ongwevu-isilivere okanye iblue-silver. Izikali zabo zincinci kwaye zibonakala kuphela kufutshane. Xa ukude, kubonakala ngathi banolusu olugudileyo. Isici esikhethekileyo se-tuna yi-spikes yabo ngasemva kunye nesisu. Amaphiko ecaudal ityhuna amile okwerhengqa.
Ituna zezinye zezona zinto zibalulekileyo zokutya kwiintlanzi. Inyama yabo ibomvu kwaye inamafutha. Uninzi ityhuna zibanjiswa eJapan, eUnited States naseMzantsi Korea. Ezinye iintlobo zetyhuna, ezifana nebluefin ityhuna okanye ituna yasemzantsi, isengozini enkulu kuba abantu bayibamba ezininzi kakhulu.
Iimbiza zisetyenziselwa ukubamba ityhuna. Le yiminatha abanokuthi baqubhe kuyo kodwa bangaphumi kuyo. EJapan nakwamanye amazwe, kukwakho iminatha emikhulu etsalwa ziinqanawa emva kwayo. Oku akuvumelekanga kuba ii dolphin ezininzi kunye nookrebe babanjiwe ekufuneka ngokwenene bakhuselwe. Ukuze oku kungenzeki kwaye ityhuna ilotywe ngokugqithisileyo kwiindawo ezithile zolwandle, ngoku kukho imibhalo kwiitoti ekumele ukuba ibonakalise ukuzinza.