Anogara mumhenderekedzo dzegungwa - hove-saw

Hove-saw (piloryl inowanikwa) ndeyemhuri yehove dzinotapira mucheka kubva padheketi ye skate. Akawana mukurumbira nekuda kwekuoneka kwake. Kusvikira ikozvino, marudzi manomwe chete ematanda akaonekwa akaparara: Atlantic, gorosi, duku-toothed, Europe, Asia, Australian, muzinga. Ihove-yakaona muviri wakaita sewa shark, pane pane 2 mapofu kune rumwe rutivi uye 2 zvipembenene zvitatu shure. Iko kune zvipenyu umo chikamu chemuswe chinobatana nedu, uye iine-muswe wechipfuva wakagoverwa muzvikamu zviviri. Ganda rePlorloria, rakafanana neya shark, rakafukidzwa nemakwenzi eparcoid. Iine misi yakasiyana yemuorivhi-grey mumarudzi akasiyana-siyana. Dumbu racho rinenge riri chena. Mifananidzo yehove-saws zvakanaka inoratidza kushandiswa kwayo kukuru-yakadzika uye yakareba kuvaka-pamusoro pemvura inenge yakafanana nesa.

Kazhinji mashizha akavhiringidzwa neimwe yehaki, iyo inonzi pylonos. Izvi hazvisi zvechokwadi, kunyange zvazvo shark iri pakati pehama dzepedyo dzejasi. Mhedziso yekupedzisira iri pasi apa, apo shark iri pamativi. Mukuwedzera, mahwendefa acho makuru mukukura. Muzhinji, vanosvika kubva pamamita 4 kusvika kumashanu pakureba, asi kunewo maminetsi manomwe emamera. A pylon shark haigoni kukura kupfuura 1.5 mamita. Pane imwe yemifananidzo yakaratidzwa yehove-saw, dumbu rayo rinonyatsooneka, apo muromo unozarura uye mapaundi maviri akafanana nemeso akanaka.

Pilorid stingra ndeyeii-yehupenyu hwemarudzi ehove. Mune mamwe mazwi, vana vavo vanoberekwa vakatogadzirwa, asi muhomwe yeii yekanda. Mukadzi anogona kubereka vana vanenge 20 kamwechete. Panguva imwecheteyo, iyo yakaona mudumbu raamai vavo yakazara zvakakwana neganda, pakuberekwa iri nyore, uye rinomesa nguva chete.

Inogara hove-yakaona mumakungwa ese, kunze kweArctic. Inzvimbo yaunofarira ndeyemhenderekedzo yegungwa, inenge isina kuitika mumhenderekedzo yegungwa. Kazhinji anoda kuvhara mumvura isina kudzika, uye pane zvakadai kuti zvipembenene zvaro zvinonzwisisika pamusoro pemvura. Pakati pemhenderekedzo yeAustralia, yemarudzi mashanu, 5 inorarama, uye kazhinji, mashizha eAustralia ave achizivikanwa mumvura yakachena, iyo inorarama, kwete kushambira kupinda mugungwa. Nenzira yakawanda, marudzi ose ezvikwata izvi anonzwa zvakanaka zvose mumvura ine mchere yemunyu, uye munzvimbo dzakasvibiswa uye dzakachena. Nzvimbo chete yavasingakwanisi kurarama ndiyo mvura yakasvibiswa nedhaka. Munguva yekufamba kwemazuva, hove-saw inogona kushambira zvakanaka munzizi huru, inowanika muzhizha nekuvhu.

Iyo inodyisa pamhando iyi yemashizha ne invertebrate benthic mhuka dzinogara muchiganda chakafukidza pasi kana jecha. Uye ndeyekudzikinura kwevhu rakadzika kuti simbi rinodikanwa rayo. Kunyangwe kune uchapupu hwokuti anoshandisa sasi rake kwete sefoshoro chete. Anogona kukurumidza kupinda, somuenzaniso, muboka remakabheti uye atsigise neanovaka-sakaita sejeri, paanenge achirova pane zvakapambwa. Uye kana inonamatira kusvika pasi, piloryl akanyarara achidya iyo imomo.

Inowanzotenda kuti hove-saw haina ngozi kuvanhu. Asi zvakadaro paiva nenhamba dzakawanda dzekurwisa. MuPanama Bay, kunyange mazamu ane chirwere chinouraya chakanyorwa. Kunyange zvazvo iyo isingatsamwi, kureva kuti, usanyengedze kana kurwisa iyo, saka inogona kunge ichiedza kuvanza paunoswedera kune munhu. Uye avo vanoda kufamba mumvura isina kudzika yegungwa, unofanirwa kuziva kuti masikati anofanana nekukanda muzuva. Tora izvi uye uedze kusaedza pane imwe yeiyo. Uye kana tikataura nezvekukuvadza, zvino munhu, achishatisa mvura, anoita zvakawanda kukuvadza kwairi. Iwe unofanirwa kuziva kuti mamwe marudzi emaSafefishes anenge atova kupera kwekuparara, ayo akanyorwa muRubhuku Rwenyika. Uye munguva ichangopfuura nhamba yose yezvikwata izvi yakaderera zvakaderera. Vanhu vashomanana vanogona kuzvirumbidza nokuti vakaona hove yakagadzirwa mune imwe nzvimbo yemhuka.