El Ingwe ekrebe, ngomnye wookrebe abakhulu, igama labo lezenzululwazi yi "galeocerdo cuvier" kodwa ikwabizwa ngokuba yi "man-eater". Ezi zilwanyana ziye zoyikwa, kuba kukho iimeko ezaziwayo apho ziye zaba yi-protagonist yokuhlaselwa kwabantu, nangaphezulu kwe-shark emhlophe.
Inkcazo ye-tiger shark
Xa sibona esinye sezi zilwanyana zibalaseleyo, sinokubona ukuba lulusu oluluhlaza okanye oluluhlaza, kodwa isisu sazo siba mhlophe okanye sibe tyheli ngakumbi. Imigca emininzi engalinganiyo inokubonwa emzimbeni wayo, efana kakhulu nale inayo. Ingwe, apho ifumana igama layo. Xa ukrebe emncinci, le mivumbo iya kubonakala kakhulu, ngoko kucingelwa ukuba njengoko ikhula, iyancipha.
Ezi zilwanyana zinomzimba omkhulu kwindawo ephezulu, kwaye zincinci kakhulu kwindawo engezantsi. Intloko yookrebe behlosi idla ngokumile okwengca kwaye ilingana nomzimba wayo ongasentla. Impumlo yaba shark inkulu kwaye ibekwe kwindawo ethe kratya yentloko. Umsila wayo awulingani, oku kungenxa yokuba i-dorsal lobe ye-caudal fin yayo inde kancinci kune-ventral.
Oyena mncinane waba shark mkhulu, ukongezelela koko, yaye oyena uyingozi kubo, sisakhiwo samazinyo abanaso. Amazinyo ayo anemilo egobileyo ngoxa imiphetho yeemime ifana namazinyo esarha, nto leyo eyenza ibe yingozi kakhulu kulo naliphi na ixhoba layo.
Ukrebe omdala wolu hlobo unokuba nobunzima obuphakathi kwe-380 yeekhilogram kunye ne-640 yeekhilogram, nangona kunjalo, kukho iirekhodi apho ezinye iisampuli zinokuba nobunzima obungaphezu kweekhilogram ezingama-800.
Xa sithetha ngobungakanani bezi zilwanyana, sibhekisa kukrebe onokumeta ngokulula phakathi kwama-325 kunye nama-425 eesentimitha ubude, nangona kunjalo, njengokuba ubunzima kunokrebe obuqhelekileyo bubhalwe, kuyaziwa ukuba abanye banokufikelela phezulu. ukuya kwiimitha ezi-5 kunye nesiqingatha ubude kwaye zithathwa njenge giant tiger shark.
Injani indawo yokuhlala kunye nokusabalalisa kukakrebe we-tiger?
Ezi zilwanyana inokufumaneka ngaphakathi phantse zonke iilwandle zehlabathi, enye ye Iimpawu zikakrebe uninzi olubethayo phakathi kohlobo lwazo, ngaphandle kweepali zomhlaba, nangona kunjalo, amanzi ashushu kunye namanzi ashushu abawakhethayo. Aba krebe bahlala kuphela emanzini anetyuwa, nokuba kuselwandle okanye elwandle, banokufumaneka ubukhulu becala kufutshane nemimandla engaselunxwemeni yeelwandle ezahlukeneyo.
Ookrebe be-Tiger badla ngokuhlala kwiindawo apho kukho umlinganiselo wobulembu okanye izityalo zaselwandle, nangona kunjalo, banokufuna ukuhlala kwiindawo ezahlukeneyo apho banokufumana inani elikhulu lokutya ukuze batye.
Olu didi lukakrebe alujongwa njengezilwanyana ezisesichengeni okanye ezisengozini yokuphela, nangona lusoloko bezingelwa kwiindawo ezithile zehlabathi, ukuze lutyiwe ngabantu okanye lufumane ubuncwane obahlukahlukeneyo abanokubuxhakamfula ngazo ezi zilwanyana.
Ngokuhamba kwexesha, aba ngomnye wookrebe abanebango eliphezulu lokungeniswa kwi-aquariums yoluntu. Zibonakaliswa kubo bonke uzuko lwazo njengoko zidada kwindawo yazo. Into eyothusayo ngolu hlobo kukuba, ukuhlala ekuthinjweni, ngakumbi kwii-aquariums, bamkelekile xa umntu engena kummandla wabo.
Nangona, njengoko sesichazile ngaphambilana, olu hlobo lwezilwanyana alusongelwa, izazinzulu ngebhayoloji nezazinzulu zikholelwa kwelokuba ukuba ziyaqhubeka zixhelwa njengoko bezinjalo kangangexesha elithile apha, yaye ngaphandle kohlobo oluthile lohlengahlengiso nemithetho ezikhuselayo, zinokuqalisa ukungena. inqanaba elibuthathaka.
Ukuziphatha kweTiger Shark
Ezi zilwanyana zihambahamba, oko kukuthi, zihlala zihamba. Zidada kwimisinga eshushu, lo gama, xa amaxesha obusika efika xa amanzi ehla ubushushu, iimime zikhetha ukuhlala kwiindawo ezikufutshane ne-ikhweyitha apho kufudumala kakhulu ngaloo maxesha. Ihlosi likakrebe ngokuqhelekileyo likhetha ukuhlala kumanzi angekho nzulu, kuba ngale ndlela likwazi ukufumana amaxhoba amaninzi kunasemanzini anzulu.
Ngokubanzi, ezi zilwanyana zodwa kwaye ebusuku, nangona kunjalo, kuye kwakho iimeko apho, ngexesha lokutya, bahlanganisana ngamaqela apho uhlobo lolawulo lusekwe, ubukhulu be-shark, ithuba elingakumbi kuya kufuneka ube ngowokuqala isondlo. Ngokwezifundo eziye zenziwa kolu didi, aziqhelekanga ukuba nochuku xa zisitya, zinomonde kwaye zikhululekile. Enye indlela yokubabona bengamaqela kukwixesha lokuzala.
Kunjani ukutyiswa kwe-tiger shark?
I-tiger shark yintlanzi enokutya okudliwayo, inokutya kwiintlobo ezahlukeneyo zezilwanyana zaselwandle, phakathi kwazo kukho ezinye iintlanzi, iifudo, iintlobo ezahlukeneyo ze-crustaceans kunye ne-molluscs, iintaka zaselwandle kunye nezinye izilwanyana zaselwandle ezinokuzifumana zijikeleze. idlulile. Kukho amaxwebhu apho aba krebe babonwa besondla kwezinye iindidi ezifanayo, isizathu sokuba benze oku ayikacaci ngokupheleleyo.
Zizilwanyana ezisebenzisa i-stealth njengesixhobo ekuthandeni kwazo, ziyakwazi ukukwazi ukuva amaza oxinzelelo olwenziwa kumaza aphantsi kakhulu, yiyo loo nto, nokuba kukho amanzi apho umbono ubuthathaka ngenxa yobunzima. ookrebe bayakwazi ukwazi ukuba liphi na ixhoba labo. Ukongeza kule ngqiqo inenzuzo kakhulu, i-tiger sharks banamehlo amahle kakhulu kunye nevumba. Ayimangalisi into yokuba ezi zijongwe njengezilwanyana ezizingelayo.
Ezi zilwanyana zinenkqubo okanye isiqhelo ezithi ziyilandele kwileta xa zityisa:
- Ukufunyanwa kwexhoba.
- Jikeleza ixhoba lalo kwaye ulilandele ngokwenza isangqa ngeenxa zonke kulo.
- Isondela kwixhoba layo ize ilichukumise ngempumlo yayo.
- Uyiginya ngokupheleleyo ukuba incinci, ukuba ixhoba elikhulu, iya kuluma kuyo.
I-Tiger sharks zaziwa ngokuhlasela abantu kwaye emva koko zikutya. Akuqhelekanga kakhulu ukuba oku kwenzeke, kuba emva kohlaselo, ngokubanzi, ezi zilwanyana zimshiya ecaleni umntu kuba ingeloxhoba elidla ngokukhetha ukulidla. Noko ke, kukho ingxelo yokuba ookrebe abatya abantu.
Injani imveliso yakho?
Okokuqala kufuneka sazi ukuba ezi zilwanyana zifikelela ekuvuthweni ngokwesondo emva kwexesha elide, kwimeko yemizekelo yamadoda, banokufikelela ekukhuleni ngokwesondo malunga ne-7 iminyaka yobomi, ngelixa abafazi bafikelela kuyo xa beneminyaka eyi-8 ubudala. Iimazi zolu hlobo azihlangani ngonyaka, zikwenza njalo emva kweminyaka emi-3.
Zizilwanyana zesithembu, oko kukuthi, abanalo iqabane elikhethiweyo, ngoko ke, kwi-mating nganye, bobabini baya kuqhagamshelana nomzekelo ohlukeneyo. Ukuza kuthi ga ngoku, akukho kakhulu ulwazi lwe-tiger shark nangezithethe zabo zokuthandana ezenziwa lolu hlobo lokrebe, nangona kunjalo, kukho iingxelo ezibonisa ukuba amadoda afaka amadlozi awo kwi<em>cloaca (ilungu lebhinqa lokuzala), ngoxa esenjenjalo, aliluma iqabane lakhe ukuze lihlale lingashukumi.
Ukukhwelana kookrebe behlosi kudla ngokwenzeka phakathi kukaMatshi noMeyi. Abancinci baya kuzalwa kunyaka olandelayo phakathi kweenyanga zika-Epreli noJuni malunga.
Aba krebe kuphela kwezilwanyana ezine-ovoviviparous kusapho abakulo, oku kuthetha ukuba amaqanda aqhanyelwe yindoda ahlala ngaphakathi kumzimba kamama de aqanduselwe, okwenzeka kwisithuba esimalunga neenyanga ezili-16 emva kokukhwelana. Emva kokuba amaqanda eqanduselwe, amantshontsho aqanduselweyo ayawushiya umzimba kanina.
Ngokuqhelekileyo, ekuzalweni, amantshontsho e-tiger shark alingana neesentimitha ezingama-51. Ekuzalweni, bazimele ngokupheleleyo, ngoko abaxhomekeke kwinkxaso kamama wabo ukuze baphile. Ngokuqhelekileyo, malunga nama-30 okanye ama-50 amantshontsho azalwa, nangona kukho iingxelo zetyala apho ama-82 kubo azalwa.
Ukukhula kwamantshontsho e-tiger shark kuyacotha, yiyo loo nto ukukhula kwawo ngokwesondo kusemva kwexesha. Ngokutsho kweengxelo, i-specimen endala eyaziwayo yolu didi yafa xa yayineminyaka engama-50 ubudala, ngoko kunokuthiwa le ntlobo yezilwanyana zaselwandle ezihlala ixesha elide.
Ukuthanda ukwazi ngalo krebe
- Ngaphambili, bekukho iintlobo ezili-12 ngaphakathi kosapho lweGaleocerdo, apho i-tiger shark ikuyo. Okwangoku, inye kuphela indidi ephilayo yayo eshiyekileyo kwaye yile ntlobo yokrebe.
- Nangona zidla ngokuba zizilwanyana ezihlala zodwa, kukho iirekhodi apho zidibana khona ukuze zitye. Kwenye yezi rekhodi unokubona iintlobo ezidla isidumbu somnenga ngelixa ngeenxa zonke kukho amehlo angumzekelo ongakumbi weentlobo zayo, ookrebe abamhlophe kunye neengwenya zamanzi etyuwa.
- Ngokwemeko yawo yendalo, olu hlobo lokrebe alunakutya okulawulekayo, ngoko ke ludla ngokutya nantoni na alufumanayo nokuba luyaqubha okanye ludada kwindawo yalo. Kukho iirekhodi apho zonke iintlobo zezinto zifunyenwe ngaphakathi kwesisu sookrebe zifunyenwe zingenabomi.
- Kwimeko apho umzekelo we-tiger shark uvalelwe kwi-aquarium yoluntu, bahlala bemangalisa abagcini babo xa besitya into ekungafanelekanga ukuba bayitye. I-anecdote enomdla enokubaliswa ngenye yezi ziganeko eziseluvalelweni yileyo kakrebe ogama lingukrebe owamkelwa kwindawo ehlala emanzini eSydney, eOstreliya, wayephila ngokukhululekileyo elwandle. Ngenye imini, abagcini bakhe baphawula ukuba uyagula, bamangaliswa xa ukrebe wagabha waza wakhupha ingalo yomntu esiswini sakhe. Iingcaphephe zenkundla, emva kovavanyo, zibike ukuba ingalo ayizange ikrazulwe sesi silwanyana, yasikwa yaze kamva yaphoswa elwandle, apho ukrebe ebefanele ukuba uyifumene khona.
- Kuyaziwa ukuba iintlobo ezininzi zookrebe ngamanye amaxesha ziba nofudo njengokutya, nangona kunjalo, i-tiger shark kuphela kweentlobo zokrebe ezizingela ngokucwangcisiweyo, oko kukuthi, ziyinxalenye ebalulekileyo kwaye ziqhelekileyo ekutyeni kwazo. Nangona kubonakala kungenakwenzeka, isibakala sokuba oku kunjalo, endaweni yokungalungelelani kwendalo, kuyanceda, ekubeni abaphandi baye bafumanisa ukuba, kwezo ndawo apho iqela laba krebe lihlala khona, i-algae, abayivelisayo ingundoqo. ukutya kwamafudo olwandle, akhula kakhulu kunezinye iindawo.
- Ezo ngcali zebhayoloji zizingcaphephe kwizifundo ngobomi baselwandle ziye zazisa itiger shark kwiqela elalibizwa ngokuba “ngabathathu abakhulu”, apho kuthethwa ngookrebe abathathu abayingozi nabakhulu elwandle, ezinye iindidi ezimbini eziyila ukrebe. aba bathathu ngukrebe wesarda kunye nokrebe omkhulu omhlophe. Kwiindidi zookrebe ezingama-350 ezaziwayo ukuza kuthi ga ngoku, aba bathathu bagqalwa njengezona ziyingozi ehlabathini.
- I-tiger shark luhlobo lokrebe olunawona magama enzululwazi ehlabathini. Okwangoku igama layo lezenzululwazi nguGaleocerdo cuvier, nangona kunjalo, ngaphambi kokuba ifike, yadlula kwabanye:
• I-Squalus Cuvier.
• I-Squalus arcticus.
• I-Galeocerdo tigrinus.
• IGaleus cepedianus.
• IGaleus maculatus.
• I-Carcharias fasciatus.
• I-Galeocerdo rayneri.
• I-Galeocerdo obtusus.
• Carcharias hemprichii.
