Izici nendawo yokuhlala katran
Ushaka-katran noma igama elivame kakhulu - elejwayelekile i-spiny shark katran, kanye nenja yasolwandle itholakala ezilwandle eziningi.
Yize kufanele kuqashelwe ukuthi unohlobo lokuthandayo ekukhetheni izindawo zokuhlala. Njengoba engeyena ummeleli we-thermophilic wohlobo lukashaka, i-katran shark izwa kamnandi emanzini apholile olwandle, ngakho-ke, iluthanda kancane ulwandle olufudumele.
Yiqiniso, ku Ulwandle olumnyama katranu Ngiyakuthanda ukuhlala, mhlawumbe ngoba amanzi endawo anezilwane zasolwandle nezimbali ezihlukile. Akusikho emithethweni yakhe ukuya kude nogu, ukhetha amanzi asogwini. Emanzini angajulile, le "nhlanzi" ayivamisi ukubhukuda, ithanda impilo ekujuleni kusuka kumamitha ayi-100 kuye kwangama-200 embusweni wobumnyama obungemuva.
Bukela i isithombe se-katran shark, lapho-ke ungabona ukuthi kufana nommeleli ojwayelekile wezinhlobo zama-sturgeon, kepha-ke, uhlobo oludlayo lunikezwa ngumzimba omise okwegwayi, umlomo kashaka nokubukeka okungenabungane kakhulu kwamehlo ayo amnyama angenalutho, afana namabhola engilazi.
Okucacile kwalo mmeleli wohlobo lukashaka ukungabikho kwezembozo ze-gill, ukungabi khona kwe-anal fin, kanye nezinsipho ezinameva ezitholakala ohlangothini lwe-dorsal fin. Ukuzivumelanisa okunjalo kunguhlobo lokuvikelwa.
Umsila kashaka ufana nesigwedlo. Kodwa-ke, izimpawu ezingabonakala ngokubonakalayo zikhona kuzo zonke izizwe zale oda yoshaka. Imvamisa oshaka balezi zinhlobo abakhuli ngaphezu kwamamitha ayi-1.5, futhi isisindo sabo asivamile ukufika ku-12-15 kg, yize kungaba yinhlanhla bese-ke kungenzeka ukuhlangana nomuntu omkhulu ngokwanele - amamitha ama-2 anesisindo esingama-20 kg.
Uhlobo lwe-katran luphucile iphalethi yombala ngakho-ke umbala wayo awukhanyi kakhulu, umbala ompunga ojwayelekile, kwesinye isikhathi uphonsa umthunzi ohlaza okwesibhakabhaka noma wensimbi. Izindawo ezikhanyayo zingabonakala ngemuva nasemaceleni.
Njengabo bonke oshaka, amazinyo e-katran, angasasebenziseki, ngezikhathi ezithile athathelwa indawo ngamazinyo amasha abukhali. Ochwepheshe balinganisile ukuthi kuyo yonke impilo kashaka, kunamazinyo afinyelela ku-1 000 emlonyeni walesi silwane. Ikhono elinjalo lingafikelwa umona - ukuze ungadli le nhlanzi ngesidlo sasemini, akesabi ukuthi kuzofanele lifake amazinyo okufakelwa ukuze ligaye ukudla okuqinile.
Amathambo alomele oshaka abayi-cartilaginous. Lokhu kusiza ukuthi i-katran iguqule umzimba wayo futhi ihambe ngokushesha. Inhlanzi esheshayo kufanele ibonge amaphiko ayo. Ngaphezu kwalokho, amaphiko asebenzela ukugcina izinhlanzi zimile noma ziqondile. Kodwa umsila unomsebenzi wawo - ukuhlinzekela ukuqondisa.
Uhlamvu nendlela yokuphila
I-organ - umugqa ohlangothini - udlala indima ekhethekile ekuqondisweni emanzini olwandle angenamkhawulo. Ngenxa yalesi sitho esiyingqayizivele, izinhlanzi zikwazi ukuzwa noma yikuphi, ngisho nokudlidlizela kwamanzi.
Ama-auls kufanele athi ngenxa yomuzwa wokuhogela - imigodi - ukuvuleka kwamakhala okuqonde ngqo emphinjeni. Ushaka uyakwazi ukubamba ebangeni elifanele into ekhethekile isisulu esiyifihlayo lapho yethuka.
Ukubukeka kukashaka kuyazikhulumela. kuyacaca ekuqaleni ukuthi le yinhlanzi ehambayo, ekwaziyo ukwenza ijubane elihle nokujaha inyamazane ize ifinyelele esikhungweni.
Ngokuqinisekile abantu abaningi banesithakazelo kulo mbuzo: "Ngabe ushaka ongcolile uyingozi kubantu?" Lapha kufanele ususe ngokushesha konke ukungabaza bese unikeza impendulo engangabazeki yokuthi ntombikayise akaze ahlasele umuntu.
Kulokhu, i-dog shark ayinabungozi ngaphezu kwepherch noma ipeki, efana ne-katran, enameva acijile emhlane wayo. Ngakho-ke i-katran shark, ehlala oLwandle Olumnyama, nakunoma yiluphi olunye ulwandle, ayinabungozi kubantu.
Vele, uma uzama ukushaya unhlangothi ngezandla ezingavikelekile ulwandle olumnyama ushaka-katran, khona-ke amathuba okuphuza aphezulu. Ngaphezu kwalokho, indawo yokujova ingahle ivuthe. Yize mhlawumbe kukhona ama-daredevils ambalwa okuthinta ushaka ngezandla zabo.
Akunconywa futhi ukuthi ubheke ukuthi amazinyo kashaka abukhali noma cha - ukulimala kuyinto edlala kancane. Futhi ngokwemvelo, akufanele ushaye inja yasolwandle "ngokumelene nokusanhlamvu", ngoba, okokuqala, ngeke ikuthande, futhi, okwesibili, izikali zezinhlanzi ziyisembozo somzimba esincane, kodwa esibukhali kakhulu.
Iqiniso elithakazelisayo: Isikhumba esomisiwe salo shaka, esifana ne-emery, sisetshenziselwa ukwenza izinkuni - ingaphezulu lezinkuni lihlabathi futhi lipholishiwe.
Uma sibheka i-katrana ngokombono wengozi kubakhileyo bolwandle, kufanele kuqashelwe ukuthi izakhamuzi zasogwini lolwandle sekuyisikhathi eside ziqaphele ukuthi inani lamahlengethwa lincipha minyaka yonke, futhi kufanelekile kulokhu, kufaka phakathi lo mmeleli wohlobo lukashaka.
Yize kunzima ukukholelwa lesi sitatimende, ngoba ushaka ucishe alingane nehlengethwa ngakho-ke i-Katran ngeke izingele inyamazane enjalo yodwa, ngaphandle mhlawumbe komhlambi. Umuntu kade wakunaka lokho katrana isibindi esikhulu, esiqukethe inhlanzi ewusizo kakhulu amafutha.
Ngemininingwane: UVitamin A osesibindi sikashaka uqukethe izikhathi eziphindwe kayishumi kunesibindi se-cod. Ngaphezu kwalokho, inyama ithenda ngokumangazayo futhi, ngemuva kokucubungulwa ngokucophelela, ingaba yisibiliboco sama-gourmets asetafuleni.
Ukudla okunomsoco katran
Lolu hlobo lukashaka luthanda ukuzitika ngezinhlobo ezincane zezinhlanzi - i-anchovy, herring. Yize ethanda inhlanzi enkulu ngesidlo sasemini, isibonelo, i-horse mackerel noma i-mackerel. Futhi ama-molluscs asolwandle, ama-squid nama-crustaceans kuvamise ukukhonzwa ngoshaka abathandekayo esidlweni sakusihlwa.
Ngokuzimisela nokho, inyamazane enkulu yalolu hlobo lukashaka izinhlanzi ezifundayo, ezibizwa nangokuthi iPelagic - ezihlala kukholamu lamanzi. Abadobi basebenzisa lo mbono ekudobeni kwabo - bayazi ukuthi indlela elula yokubamba i-katran kulapho kunezicucu ezinkulu ze-herring noma i-mackerel.
Ukuzala kanye nesikhathi sokuphila
Ushaka ocwebezelayo ungummeleli wohlobo lwe-ovoviviparous shark. Owesifazane uphatha amaqanda ngamaphilisi akhethekile atholakala ku-oviduct cishe iminyaka emibili. Oshaka abancane bazalwa ngobuningi kusuka ku-15 kuya ku-20 futhi abekho ngaphezu kwekota yemitha ngosayizi.
Amawundlu kashaka akhula ngokushesha, futhi inzalo ezalwa yi-katran ishintshwa ngokushesha ukuze iphile impilo yokudla, engahlukile kunendlela yokuphila yabazali.
Ngeminyaka eyi-12, oshaka abasebasha baba ngabantu abavuthiwe ngokocansi, okusho ukuthi bayakwazi ukuzala. Kuyathakazelisa ukuthi ama-katrani ahlukaniswa ngumuntu oyedwa, okungukuthi, banomngane ohlala njalo empilweni, le nhlanzi eyakha ubuhlobo bomndeni naye. Isikhathi sokuphila ngamazinga ezinhlanzi sikhulu - ikota yekhulu leminyaka noma ngaphezulu, ngakho-ke lolu hlobo lukashaka lungabizwa ngokuthi yisibindi eside.
