Kifaye masu kifaye suna zaune a cikin dukkan tekuna, amma ana ganin cunkoso mafi girma a cikin manyan wurare masu zafi. Yawancin kifaye suna zaune a cikin Caribbean a bakin tekun Barbados. Wannan kasar tamu tana dauke da sunan da ba a san shi ba na “ƙasar kifaye mai tashi”, kifin da kanta alama ce ta ƙasa.

Wasu nau'ikan suna girma har zuwa rabin rabin tsayi. Peashin ɗigon kwancen yana da haɓaka sosai, wasu nau'in suna da finfin da aka hana. Irin waɗannan kifayen ana kiransu kifi mai fuka-fukai huɗu.

Kifi mai tashiwa. Hoto na kifi mai tashi

Ikon kifi don yin manyan jiragen sama masu ban sha'awa. A watan Mayun 2008, wasu gungun masu ba da rahoton labarai na gidan talabijin na kasar Japan sun kama wani jirgin kamun kifi mai tashi sama da 45 daƙiƙa. Rubutun da suka gabata shine "kawai" 42 seconds. Don cimma wannan doguwar jirgin kifaye yana ba da damar maki da yawa. Da fari dai, jikinta yana da siffar torpedo, yana ƙyale kifin ya hanzarta ƙarƙashin ruwa zuwa kilomita 60 / h. Abu na biyu, ƙusoshin suna da tsari mai yawa wanda ba ya ƙetarewa iska ta ƙashin gashin ƙashin kansa, amma yana tallafawa jiki a cikin rafin iska. Abu na uku, a ƙarshen jirgin, kifin ya fara taɓa ruwan da wutsiyar sa kuma ya ci gaba da "tafiya" ta cikin ruwan, kamar marlin ko jirgin ruwa.

Masana kimiyya sun yi nazarin jirgin tashi na kifi mai tashi a farkon karni na 20 lokacin da suke tsara jirgin sama na farko.

Kifi mai tashiwa. Hoto na kifi mai tashi

Wadannan kifayen sun sami ikon tashiwa yayin juyin halitta. Gujiwa daga maƙiyanta da yawa, kifayen da ke tashi suna ƙaruwa zuwa 60 km / h, suna rage wutsiyarsa sau 70 a sakan na biyu. Amma saurin hawa sau ɗaya bai isa ba, saboda haka kifaye masu tarin yawa suna tsallake ruwa don ɓacewa daga gani. Jirgin zai iya kai mita 400. A lokacin sa, kifin ya ɗaga ƙusoshin dan kadan sama don hawa. Dole ne in faɗi cewa wannan tsayin daka mai kyau ne kuma yana iya zama sama da m 1.2. Saboda haka, kifayen da ke tashi za su iya “tashi” cikin jiragen ruwa mara nauyi

Kifi mai tashiwa. Hoto na kifi mai tashi

Yana da mahimmanci a lura cewa jirgin da aka saba don tserewa daga abokan gaba shi ma kifi yana amfani da shi kuma ba "don dalilan da ya nufa ba." Kamar dabbobi da yawa, haske ne yake jan su, wanda mazauna yankin ke amfani da shi don kama kifayen da ke tashi. Ta hanyar amfani da jirgin ruwa a cikin teku da daddare, cike shi da ruwa, da barin fitila mai haske, ya zama tarko ga kifayen da suke “tashi” zuwa haske. Da zarar kifin ciki, kifin ba zai iya tsallakewa ba tare da samun saurin da yake bukata ba.

Lamprey tsutsa - daddare. Shekaru biyar na rayuwa a cikin yashi

A rayuwar dabbobin daji na Rasha, duba tashar DUKAN KASADA KWANKWASO NA A PAIR / Pavel Glazkov

A cikin kaka da damuna, fitila ta tashi daga Tekun Finlan - a cikin koguna da koguna domin ci gaba da danginsu a lokacin bazara. A cikin fitila, wannan na faruwa ne kawai da shekaru 7-8, kafin wannan dabba ba ta kiwo ba. Siyarwa tana da ban sha'awa: maza da yawa tare suna jan mazaunin da aka gama a cikin yashi. Idan dutse ya riske, namiji zai manne da ita, kuma, ya jingina da wutsiyar sa, ya jefa ta gefe.

Bayan da gida ya shirya, mata sukan koma suna iyo a ciki. Ofaya daga cikin maza na manne a bayan matar mace, ta nannade jikinta kamar maciji, tana fitar da ƙanenta kuma nan da nan tayi takin. Don haka maza sun cika mazaunin su da caviar. Bayan kawai ɓarkewar rayuwarsu, fitilar ta mutu.

Kuma makonni biyu bayan haka, larvae ƙyanƙyashe daga qwai, mai kama da ƙananan tsutsotsi waɗanda ke binne a cikin ƙasa, kuma za su zauna a cikin ƙasa na shekaru biyar (!). Wannan yana da sauri.

Don yin rahoton rahoton, ni da masana kimiyya na Ma'aikatar Ichthyology da Hydrobiology a Jami'ar Jihar St Petersburg mun isa bakin kogi don kokarin ƙoƙarin ganoanoto a cikin ƙasa.

Don neman waɗannan dabbobin da ba a sani ba, na buƙaci canza zuwa rigar shara.

An dauki samfurorin ƙasa ta amfani da “haƙoɓon ruwa na ƙasa. Mun wanke ƙasa da aka ɗauka a cikin kogin ta hanyar sieve na musamman, kamar dai muna neman zinare. Daga farkon samammen kayan mu mukazo ga mutane hudu masu hanzari (!) Farin ciki bai san iyaka ba. A gare mu azumi, ya fi zinariya daraja. A wannan rana, mun sami damar samo dukkan rukunin shekarunta, daga shekara daya zuwa biyar.

Lamprey larvae ba masu farauta bane: a cikin ɓarnar suna bincika kuma suna ci ragowar tsire-tsire da ƙananan dabbobi. Suna da kamannin fitilun wuta wanda ya daɗe ana ɗaukarsu wani jinsin ne!

Wani taron ban mamaki yana jiranmu. A ƙarshen ranar harbi, mun sami damar gano smolta, tsutsa fitila bayan metamorphosis. Idanun ta sun bayyana a fili, bakin nata kamar fitila ce mai hakora. Yayi kama da ƙaramin ƙaramin ƙarafa. A lokacin bazara, zai rigaya ya zame cikin tekun Finland, kuma tsawon shekaru biyu zai jagoranci rayuwar azzalumi.

A ƙarshen rana, bayan mun tattauna sakamakon kimiyya, mun gamsu da farin ciki, mun koma gida. Na hau hoton, kuma masana kimiyya sun bayyana bayanan da aka samo na musamman.