El I-tiger shark, ungomunye woshaka abakhulu kunawo wonke, igama lawo lesayensi yi-"galeocerdo cuvier" kodwa waziwa nangegama elithi "isilwane esidliwayo". Lezi zilwane ziyesatshwa, njengoba sekunezimo ezaziwayo lapho bezilokhu zihlasela abantu, ukwedlula ushaka omhlophe.
Incazelo ye-tiger shark
Lapho sibona esinye salezi zilwane ezibabazekayo, siyakwazi ukubona ukuthi sinesikhumba esiluhlaza okwesibhakabhaka noma esiluhlaza, nokho, isisu sazo siba mhlophe noma sibe phuzi. Imigqa eminingi engalingani iyabonakala emzimbeni wayo, efana kakhulu naleyo enayo. Ihlosi, kusukela lapho ithola igama layo. Lapho ushaka emncane, le mithende izobonakala kakhulu, ngakho kucatshangwa ukuthi njengoba ikhula, iyancipha.
Lezi zilwane zinomzimba omkhulu engxenyeni engenhla yayo, futhi mncane kakhulu engxenyeni engezansi. Ikhanda likashaka we-tiger ngokuvamile limise okwegenge futhi liyalingana ngosayizi nomzimba walo ongenhla. Ikhala lalaba shaki likhulu futhi litholakala engxenyeni enkulu yekhanda. Umsila wayo awulingani, lokhu kungenxa yokuthi i-dorsal lobe ye-caudal fin yinde kancane kune-ventral.
Ingcosana yalaboshaka inkulu, ngaphezu kwalokho, futhi okuyingozi kakhulu kubo, isakhiwo esinamazinyo abanaso. Amazinyo ayo anesimo esigobile kuyilapho amachopho e-mime afana namazinyo esaha, okuyenza ibe yingozi kakhulu kunoma iyiphi inyamazane yayo.
Ushaka omdala walolu hlobo ungaba nesisindo esiphakathi kwamakhilogremu angama-380 kanye namakhilogremu angama-640, noma kunjalo, kukhona amarekhodi lapho ezinye izibonelo zingaba nesisindo esingaphezu kwamakhilogremu angama-800.
Uma sikhuluma ngobukhulu balezi zilwane, sibhekise kushaka okwazi ukukala kalula phakathi kwamasentimitha angama-325 no-425 ubude, nokho-ke, njengoba kuye kwabhalwa phansi kunesisindo soshaka esivamile, kuyaziwa futhi ukuthi abanye bangafinyelela phezulu. kuya kumamitha ayi-5 nengxenye ubude futhi athathwa njenge i-tiger shark enkulu.
Injani indawo kanye nokusabalala kwe-tiger shark?
Lezi zilwane zingatholakala cishe kuzo zonke izilwandle zomhlaba, enye yazo Izimpawu Zoshaka egqama kakhulu phakathi kohlobo lwazo, ngaphandle kwezigxobo zeplanethi, nokho, amanzi asezindaweni ezishisayo nezishisayo abawathandayo. Laboshaka bahlala emanzini anosawoti kuphela, kungakhathaliseki ukuthi olwandle noma olwandle, bangatholakala ikakhulukazi eduze nezindawo ezisogwini zamabhishi ahlukahlukene.
Oshaka be-tiger ngokuvamile bahlala ezindaweni lapho kukhona isilinganiso sesilinganiso solwelwe noma izitshalo zasolwandle, nokho, bangafuna nokuhlala ezindaweni ezihlukene lapho bengathola khona inani elikhulu lokudla abangadla kuzo.
Lolu hlobo lukashaka alubhekwa njengezilwane ezisengozini noma ezisengozini yokushabalala, nakuba lihlale lizingelwa kwezinye izingxenye zomhlaba, ukuze lidliwe abantu noma bathole izinsiza ezihlukahlukene abangazisebenzisa ngokunenzuzo lezi zilwane.
Ngokuhamba kwesikhathi, laba bangabanye oshaka abanesidingo esikhulu kakhulu okufanele bangeniswe ezindaweni ezihlala emanzini zomphakathi. Avezwa ngenkazimulo yawo yonke njengoba ebhukuda endaweni yawo emisiwe. Okumangazayo ngalolu hlobo ukuthi, ezihlala ekuthunjweni, ikakhulukazi ezindaweni ezihlala emanzini, ziyemukela lapho umuntu engena endaweni yazo.
Nakuba, njengoba sishilo ekuqaleni, lolu hlobo lwezilwane alusongelwa, izazi zezinto eziphilayo nososayensi bakholelwa ukuthi uma beqhubeka bezingelwa ngokungemthetho njengoba sekuyisikhathi eside belapha, futhi ngaphandle kohlobo oluthile lwemithetho nemithetho ezivikelayo, bangase baqale ukungena. isiteji esisengozini.
Ukuziphatha kwe-Tiger Shark
Lezi zilwane ezihlala zihamba, okusho ukuthi, zihlezi zihamba. Zibhukuda emanzini ashisayo, kuyilapho, lapho kufika izinkathi zasebusika lapho amanzi ehla izinga lokushisa, ama-mime akhetha ukuhlala ezindaweni eziseduze nenkabazwe lapho kufudumala kakhulu ngalezo zikhathi zonyaka. I-tiger shark ngokuvamile ikhetha ukuhlala emanzini angashoni, ngoba ngale ndlela, ikwazi ukuthola inyamazane eminingi kunasemanzini ajulile.
Ngokuvamile, lezi zilwane zihlala zodwa futhi zasebusuku, nokho, kuye kwaba nezimo lapho, ngesikhathi sokudla, zibuthana ngamaqembu lapho kusungulwa uhlobo oluthile lombuso, ushaka omkhulu, ithuba elengeziwe uzoba ngowokuqala okuphakelayo. Ngokusho kocwaningo olwenziwe ngalolu hlobo lwezilwane, azivamile ukuhlukumezana ngenkathi zidla, kunalokho zinesineke futhi zikhululekile. Enye indlela yokuzibona zingamaqoqo yinkathi yokuzala.
Kunjani ukuphakelwa kwe-tiger shark?
I-tiger shark iyinhlanzi enokudla okudliwayo, ingadla izinhlobo ezahlukene zezilwane zasolwandle, phakathi kwazo kukhona ezinye izinhlanzi, izimfudu, izinhlobo ezihlukahlukene zama-crustaceans nama-molluscs, izinyoni zasolwandle nezinye izilwane ezincelisayo zasolwandle ezingazithola eduze kwazo. wedlule. Kunemibhalo lapho laba shaka bebonakala bedla ezinye zezinhlobo ezifanayo, isizathu esenza lokhu namanje akukacaci kahle.
Ziyizilwane ezisebenzisa i-stealth njengesikhali esivuna zona, ziyakwazi ukuzwa amaza okucindezela akhiqizwa ngamaza aphansi kakhulu, yingakho, noma kukhona amanzi lapho umbono umpofu ngenxa ye-turbidity , lezi. oshaka bakwazi ukwazi lapho abangaba isisulu sabo. Ngaphezu kwalo mqondo onenzuzo kakhulu, oshaka be-tiger babona kahle kakhulu futhi bayahogela. Akumangazi ukuthi lezi zithathwa njengezilwane ezizingelayo.
Lezi zilwane zinenqubo noma umkhuba eziwulandela ngokohlamvu lapho zidla:
- Ukutholwa inyamazane.
- Zungezisa inyamazane yayo bese uyilandela ngokwenza iziyingi eziyizungezile.
- Isondela inyamazane yayo iyithinte ngamakhala.
- Iwudla iphelele uma incane, uma kuyimpango enkulu, izothatha ukulunywa kuyo.
Oshaka be-tiger baziwa ngokuhlasela abantu bese bedla wena. Akuvamile ukuthi lokhu kwenzeke, ngoba ngemva kokuhlasela, ngokuvamile, lezi zilwane zishiya umuntu eceleni ngoba akuyona inyamazane ezivame ukukhetha ukuyidla. Nokho, kunomlando woshaka we-tiger abadla abantu.
Kunjani ukukhiqiza kwakho?
Okokuqala nje kufanele sazi ukuthi lezi zilwane zifinyelela ekuvuthweni kobulili ngemva kwesikhathi eside, endabeni yezibonelo zesilisa, zingafinyelela ekuvuthweni kobulili eminyakeni eyi-7 yokuphila, kuyilapho abesifazane befika lapho sebeneminyaka engaba ngu-8 ubudala. Izinsikazi zalolu hlobo azihlanganisi minyaka yonke, zikwenza njalo eminyakeni emi-3.
Ziyizilwane ezinesithembu, okungukuthi, azinamlingani oqokiwe, ngakho-ke, ekukhuleni ngakunye, bobabili bazoxhumana nesampula ehlukile. Kuze kube manje, akukho okuningi ulwazi lwe-tiger shark futhi mayelana nemikhuba yabo yokuqomisana eyenziwa yilolu hlobo lukashaka, nokho, kunemibhalo ebonisa ukuthi abesilisa bafaka isidoda sabo ku-cloaca (isitho sowesifazane sokuzala), kuyilapho benza kanjalo, baluma umlingani wabo ukuze bahlale benganyakazi.
Ukuhlangana kwe-tiger shark kuvame ukwenzeka phakathi kukaMashi noMeyi. Intsha izozalwa ngonyaka olandelayo phakathi nezinyanga zika-April noJuni cishe.
Lab' oshaka yibo kuphela izilwane ezi-ovoviviparous emndenini ezikuwo, lokhu kusho ukuthi amaqanda avundiswa yindoda ahlala ngaphakathi emzimbeni kamama kuze kube yilapho achanyuselwa, okwenzeka esikhathini esingangezinyanga eziyi-16 ngemuva kokuhlangana. Ngemva kokuchanyuselwa amaqanda, amazinyane achanyuselwe ayaphuma emzimbeni kamama.
Ngokuvamile, ngesikhathi sokuzalwa, imidlwane ye-tiger shark ilinganiselwa kumasentimitha angu-51. Lapho zizalwa, zizimele ngokuphelele, ngakho azincikile ekusekelweni unina ukuze ziphile. Ngokuvamile, cishe ama-pups angama-30 noma angu-50 azalwa, nakuba kunemibiko yecala lapho ama-82 awo azalwa khona.
Ukukhula kwemidlwane ye-tiger shark kuhamba kancane, yingakho ukuvuthwa kwawo ngokocansi kwephuzile. Ngokwemibiko, isampula endala eyaziwayo yalolu hlobo yafa lapho ineminyaka engu-50 ubudala, ngakho-ke kungashiwo ukuthi lolu uhlobo lwezilwane zasolwandle eziphila isikhathi eside.
Ilukuluku ngalo shaki
- Ngaphambilini, bekunezinhlobo eziyi-12 emndenini wakwaGaleocerdo, okungowazo ushaka we-tiger. Njengamanje, kukhona uhlobo olulodwa kuphela oluphilayo olusele futhi yilolu hlobo lukashaka.
- Nakuba ngokuvamile ziyizilwane ezihlala zodwa, akhona amarekhodi lapho zihlangana khona ukuze zidle. Kwelinye lala marekhodi ungabona izinhlobo zezilwane ezidla isidumbu somkhomo kuyilapho eduze kwawo kunamehlo ayisibonelo ezinhlobo zawo, oshaka abamhlophe nezingwenya zasemanzini anosawoti.
- Ngokwesimo salo semvelo, lolu hlobo lukashaka alunakho ukudla okulawulwayo, ngakho luvame ukudla noma yini oluyithola lubhukuda noma luntanta endaweni yalo. Kunamarekhodi lapho zonke izinhlobo zezinto eziye zatholakala ngaphakathi esiswini soshaka ezitholwe zingaphili.
- Uma kwenzeka i-tiger shark ivalelwe endaweni ehlala emanzini yomphakathi, ihlale imangaza abagcini bayo uma idla into okungafanele ikudle. I-anecdote enelukuluku engatshelwa ngesinye salezi zigameko esezithunjweni yileso sikashaka we-tiger owangeniswa endaweni ehlala emanzini e-aquarium e-Sydney, e-Australia, ubezihlalele ngokukhululeka olwandle. Ngolunye usuku, abagcini bakhe babona ukuthi uyagula, bamangala lapho ushaka ehlanza futhi ekhipha ingalo yomuntu esiswini sakhe. Ongoti bezobunhloli, ngemuva kokuhlolwa, babike ukuthi ingalo ayizange idatshulwe yilesi silwane, yasikwa yaphinde yaphonswa olwandle, lapho ushaka obekufanele athole khona.
- Kuyaziwa ukuthi izinhlobo eziningi zoshaka ngezikhathi ezithile ziba nezimfudu njengokudla, nokho, i-tiger shark iwukuphela kohlobo lukashaka olubazingela ngendlela ehlelekile, okungukuthi, bayingxenye ebalulekile nevamile yokudla kwabo. . Nakuba kungabonakali kungenakwenzeka, iqiniso lokuthi lokhu kunjalo, esikhundleni sokungalinganisi i-ecosystem, liyayizuzisa, njengoba abacwaningi bathole ukuthi, kulezo zindawo lapho kuhlala khona inqwaba yalaboshaka, ulwelwe, abalukhiqizayo yilo oluyinhloko. ukudla kwezimfudu zasolwandle, zikhula zibe zinkulu kakhulu kunezinye izindawo.
- Lezo zazi zesayensi yezinto eziphilayo ezingochwepheshe ocwaningweni ngezilwane zasolwandle ziye zethula ushaka i-tiger eqenjini elalibizwa ngokuthi “ama-big three”, lapho kubhekiselwa khona koshaka abathathu abayingozi kakhulu nabakhulu kunawo wonke olwandle, ezinye izinhlobo ezimbili ezakha. laba abathathu yi-sarda shark kanye noshaka omkhulu omhlophe. Ezinhlotsheni zoshaka ezingu-350 ezaziwayo kuze kube manje, lezi zintathu zibhekwa njengeziyingozi kakhulu emhlabeni.
- I-tiger shark iwuhlobo lukashaka oluye lwaba namagama esayensi amaningi emhlabeni. Njengamanje igama layo lesayensi yi-Galeocerdo cuvier, nokho, ngaphambi kokuba lifike, ladlula kwamanye:
• I-Squalus Cuvier.
• I-Squalus arcticus.
• I-Galeocerdo tigrinus.
• I-Galeus cepedianus.
• I-Galeus maculatus.
• I-Carcharias fasciatus.
• I-Galeocerdo rayneri.
• I-Galeocerdo obtusus.
• I-Carcharias hemprichii.
