Owakhileyo izilwandle - sawfish

Fish-babona (pylori vulgare) kungokwalabo umndeni lezinhlanzi cartilaginous superorder skates. Udumo litholé sibonga ukubukeka kwayo. Ngaphambi isikhathi sethu ngasinda zinhlobo 7 kuphela pilorylov: atlantic, oluhlaza, esihle, i-European, Asian, Australian, ikamu. Fish has ushaka side umzimba isaha-like, lapho fin 2 athambekele ohlangothini ngalunye fin ezimbili esingunxantathu ngemuva. Kukhona izinhlobo zezilwane okuzothi ingxenye umsila njengoba okuhlanganisiwe ne umzimba, futhi - ihlukaniswe yaba izingxenye 2 ka fin caudal. Isikhumba pylori njengoba ushaka, placoid embozwe izikali. It has ngo kwezinhlobo ezahlukene shades umbala omnqumo-grey obuhlukahlukene. Belly - awube mhlophe. Isithombe zezinhlanzi, wabona umbukiso omuhle inzuzo yayo esemqoka - flat futhi eside Ukwakha-up on the empumulweni ngesimo isaha.

Kaningi sawfish kudidaniswe ingenye kwezinhlobo oshaka, okungukuthi pristiophorus. Lokhu akulona iqiniso, nakuba oshaka futhi kukhona izihlobo abakhulu stingrays. Lesi sakamuva zitholakala ezansi gills, kuyilapho oshaka kukhona ezinhlangothini. Ngaphezu kwalokho, nemithambeka makhulu ngosayizi. Ngokuyinhloko zifinyelele amamitha 4 kuya 5 ubude, kodwa kukhona izimo amamitha eziyisikhombisa. A pristiophorus ushaka akuvamile ikhula kuka 1.5 amamitha. On omunye izithombe okufakiwe kuze kube ibona-inhlanzi kubonakala ngokucacile yesisu sakhe, lapho umlomo kanye pair of gills zifane ubuso izinyembezi.

Sawfish kungokwalabo ovoviviparous izinhlanzi engqondweni. Ngamanye amazwi, ithole yabo ozalwa zakhekile, kodwa obunesikhumba igobolondo amaqanda. Insikazi kungaba abelethe 20 ngokushesha izingane. Ngesikhathi esifanayo babebona isizalo ngokuphelele isikhumba ezifihliwe ngesikhathi sokuzalwa, kuba soft futhi Uqinisa kuphela isikhathi.

Sawfish kuwo wonke izilwandle ngaphandle kwe-Arctic. indawo awuthanda - lena emanzini asogwini olwandle oluvulekile, lokhu kungenzeki cishe. Kaningi ayithandayo yokuthamela angajulile, futhi yokuthi amaphiko ayo amaphiko kuyabonakala ababezohlala kuyo ngaphezu kwamanzi. Ngasogwini Australia, kusukela ngo-7 5 ezitholakala emhlabeni, futhi ngempela le pylori wase-Australia uye eside kahle amanzi aqabulayo emfuleni, lapho isela lihlala khona, hhayi ebhukuda olwandle. Ngokuvamile, zonke izinhlobo imisebe vuma ngo okunosawoti ocean amanzi brackish nasemanzini agelezayo ezindaweni. Okuwukuphela kwendawo lapho abakwazi ukuphila - kuba namanzi angcolile imfucuza. Phakathi yezinkathi ezithile Ukuthuthwa sawfish letingabhukusha ngokuphepha nemifula emikhulu, kwenzeka esikhathini ihlobo noma ekwindla.

It feeds lolu hlobo skates benthic ezilwane ezingenamgogodla izilwane ezihlala esikhumbeni kodaka phansi noma isihlabathi. Futhi ukuze athambise umhlabathi phansi pilorylu edingekayo ezihluthulelwe yayo. Nakuba kunobufakazi lokuthi uyawasebenzisa isaha lakhe hhayi nje njengomuntu lokwela. Kungaba ngokushesha aphule, isibonelo, iphakethe mullet wendiza yabo Ukwakha-up, njengenkemba, ukushaya at inyamazane efanayo. Futhi uma uwela pylori phansi buthule odla naye lapho.

It ubhekwa ukuthi sawfish akuyona yingozi kubantu. Noma kunjalo, kwaba nezigameko eziningana ukuhlaselwa. EGulf of Panama eqoshiwe ngisho nokufa kwabantu. Nakuba uma kungenziwanga okufanele kumkhathaze, ukuthi akuyona bakugcone hhayi ukuhlasela ke, ngaleso sikhathi cishe, yilapho umuntu othile wasondela uzame nje ubalekela. Futhi kulabo othanda ukuba udabule leli emanzini angajulile olwandle, udinga ukwazi ukuthi ramps sengathi kukhona yokuthamela ilanga. Hlale ukhumbula lokhu bese uyazama hhayi uzoshiya eyodwa yazo. Futhi uma sikhuluma umonakalo lowo muntu, ungcolisa amanzi, lenzani umonakalo owengeziwe. Sicela uqaphele ukuthi uhlobo oluthile pilorylov kakade on the esengozini yokuqothulwa, zibalwa njengoba ezisengozini. Futhi okokugcina lonke inani imisebe encishisiwe kakhulu. ezimbalwa kakhulu abantu abakwazi ukuzibonga ukuthi babone izinhlanzi-babona e engokwemvelo yemvelo ngoba.