Izinhlanzi ezindizayo zihlala kuzo zonke izilwandle, kepha ukuhlangana okukhulu kakhulu kuyabonakala ezindaweni ezifudumele ezishisayo. Izinhlanzi eziningi zihlala eCaribbean ngasogwini IBarbados. Leli lizwe lize liphathe igama elingelona elabhalwa ngokuthi "izwe lezinhlanzi ezindizayo", kanti nenhlanzi uqobo lwayo iluphawu lukazwelonke.
Ezinye izinhlobo zikhula zibe yingxenye yemitha ubude. Amaphinifa we-pectoral athuthukiswe kahle, ezinye izinhlobo zine-fifuratedated. Izinhlanzi ezinjalo zibizwa ngokuthi izinhlanzi ezinezimpiko ezine.
Ukundiza izinhlanzi. Izithombe zezinhlanzi ezindizayo
Amandla ezinhlanzi ukwenza izindiza ezinkulu ayahlaba umxhwele. NgoMeyi 2008, iqembu lezintatheli zethelevishini laseJapan lathumba indiza eyindiza ihlala imizuzwana engama-45. Ukuqoshwa kwangaphambilini bekuyimizuzwana engu-42 kuphela. Ukufinyelela indiza ende kangaka yezinhlanzi kuvumela amaphuzu amaningi. Okokuqala, umzimba wakhe unesimo sethoshi, okuvumela izinhlanzi ukuba zisheshe ngaphansi kwamanzi ziye ku-60 km / h. Okwesibili, amaphiko anesakhiwo esiminyene esingadluleli emoyeni ngezimpaphe zamaphinifa, kodwa asekela umzimba osemgudleni womoya. Okwesithathu, lapho kuphela indiza, izinhlanzi ziqala zithinte amanzi ngomsila wazo bese ziyaqhubeka 'nokuhamba' emanzini, njengemashi noma isikebhe sokuhamba ngomkhumbi.
Ososayensi bafunda imodeli yendiza yezinhlanzi ezindizayo ekuqaleni kwekhulu lama-20 lapho beklama indiza yokuqala.
Ukundiza izinhlanzi. Izithombe zezinhlanzi ezindizayo
Lezi zinhlanzi zathola amandla okundiza ngesikhathi sokuziphendukela kwemvelo. Iphunyuka ezitheni zayo eziningi, izinhlanzi ezindizayo zanda ziye ku-60 km / h, zisusa umsila wazo amahlandla angama-70 ngomzuzwana. Kepha ijubane elilodwa kwesinye isikhathi alanele, ngakho-ke inhlanzi enobuhlakani igxuma iphume emanzini ukuze ilahleke ngokubuka. Indiza ingafinyelela kumamitha ayi-400. Ngesikhathi sayo, inhlanzi iphakamisa amaphiko kancane ukuze ikhuphuke. Ngingasho ukuthi lokhu kuphakama kuqondile futhi kungaba ngaphezu kwamamitha ayi-1,2. Ngakho-ke, izinhlanzi ezindizayo "zingandiza" emikhunjini yasolwandle ephansi.
Ukundiza izinhlanzi. Izithombe zezinhlanzi ezindizayo
Kuyaqapheleka ukuthi indiza ejwayele ukuphunyuka ezitheni nayo isetshenziswa yizinhlanzi hhayi "ngenhloso eyenzelwe yona." Njengezilwane eziningi, zikhangwa ukukhanya, okusetshenziswa abantu bendawo ukubamba izinhlanzi ezindizayo. Ngokufaka isikebhe olwandle ebusuku, sigcwalise ngamanzi, futhi sishiya isibani sikhanyisiwe kuso, kuba ugibe lwezinhlanzi “ezindiza” ekukhanyeni. Lapho sezingaphakathi kwesikebhe, inhlanzi ayikwazi ukugxuma ngaphandle kokuthola ijubane elidingekayo ukuze igxume.
Lamprey izibungu - ebusuku. Iminyaka emihlanu yokuphila esihlabathini
Empilweni yezilwane zasendle zaseRussia, bheka isiteshi OKWAKUDALWA NGAKHO NGESITHUTHWA / Pavel Glazkov
Ekwindla nasebusika, u-lamprey ugijimela eGulf of Finland - ungene emifuleni nasemifudlaneni, ukuze kuqhubeke uhlobo lwayo entwasahlobo. Ku-lamprey, lokhu kwenzeka kuphela eneminyaka eyi-7-8, ngaphambi kokuba lesi silwane singazali. Ukunwebeka kuyathakazelisa kakhulu: abesilisa abaningana bendawonye bakhipha isidleke esivamile esihlabathini. Uma kuvela itshe, owesilisa uyanamathela kulo, futhi, ancike umsila walo, aliphonsa eceleni.
Ngemuva kokuba isidleke sesilungile, izinsikazi zishintshana ukubhukuda zingene kuso. Enye yabesilisa inamathela ngemuva kwekhanda lowesifazane, igoqa umzimba wayo njengenyoka, inyibilikise amaqanda ayo ngokushesha imanzise. Ngakho-ke abesilisa bagcwalisa isidleke sabo esijwayelekile nge-caviar. Ngemuva kokuqhekeka okukuphela kwempilo yabo, izibani ziyafa.
Futhi emavikini amabili kamuva, izibungu ziqandusela emaqanda, zifana nezibungu ezincane ezigcwala emhlabathini, futhi zizophila emhlabathini iminyaka emihlanu (!). Lokhu kuyashesha.
Ukudubula lo mbiko, mina nososayensi boMnyango we-Ichthyology ne-Hydrobiology yeSt.
Ukuthola lezi zilwane ezingajwayelekile, kwakudingeka ngiguqule ku-wetsuit.
Amasampula omhlabathi athathwa kusetshenziswa “ukubambisa okumbili kwe-diving. Sigeze inhlabathi ethathwe emfuleni ngesigaxa esikhethekile, kube sengathi sifuna igolide. Kusukela kusampula yokuqala yezinto ezibonakalayo sahlangana nabantu abane abafinyelela ngokushesha (!) Injabulo yayingazi lutho. Kithina okusheshayo, okubiza kakhulu kunegolide. Ngalolu suku, sikwazile ukuthola yonke iminyaka yobudala bakhe, kusukela onyakeni owodwa kuya kwemihlanu.
Izibungu ze-Lamprey akuzona izitha: ku-silt zibheka futhi zidle izinsalela zezitshalo ezifile nezilwane ezincane. Zingafani nezibani zesibani kangangokuba isikhathi eside zabonwa njengezinhlobo ezihlukile!
Besilindelwe ngomunye umhlangano omangazayo. Ekupheleni kosuku lokudubula, sikwazile ukuthola i-smolta, isibungu se-lamprey ngemuva kwe-metamorphosis. Amehlo akhe abonakala ngokusobala, umlomo wakhe ufana nesibani sangempela esinamazinyo abukhali. Kubukeka njengesikhuni esincane. Entwasahlobo, izovele ingene kwiGulf of Finland, futhi iminyaka emibili kuzohola indlela yokuphila yomzingeli ononya.
Ekupheleni kosuku, sesike saxoxa ngemiphumela yesayensi, sanelisekile futhi sajabule, saya ekhaya. Ngifaka isithombe, ososayensi bachaza imininingwane etholakele eyingqayizivele.