Beke - Ziphius cavirostris G. Cuvier, 1823
Amintaka Rarity: 3 - nau'in nau'ikan da ba a san shi ba tare da wadataccen yalwa. A cikin Rasha, ta mamaye ɓangaren ɓangaren kewayon.
Yaɗa: Ana gano bakin ta cikin dukkan ruwan sanyi, mai santsi da yanayin matsakaici na Tekun Duniya, ban da manyan wurare, amma yana da karancin ko'ina. Matsakaici a Rasha yanki ne mara ƙima na adadin nau'in halittu. A cikin ruwan Turai na Rasha, haɗuwarsa mai yiwuwa ne kawai a cikin Baltic (an lura da maganganun 2 na bushewa) da kuma Gabas ta Tsakiya - a cikin Jafananci, Okhotsk da Bering Seas [1,2]. Anan ne baki ake yinsa a gabas. Yankin Kamchatka (bushewa a Kronotsky Bay an santa., a cikin yankin tuddai na Kuril kuma musamman a tsibirin Kwamandan, inda ana samun shi shi kaɗai kuma a cikin nau'i-nau'i daga Afrilu zuwa Oktoba. bakin iyaka: daga Tierra del Fuego, tashar metro na kyakkyawan fata, Tasmania da New Zealand zuwa Tekun Bering (Tsibirin Pribylova), Arewa, Rum da Tekun Baltic [1,2,4] A Arewacin Atlantika, ta fi dacewa a cikin ruwan Great Britain A Arewacin Pacific a arewa, ya ratsa zuwa tsibirin Pribylov, da Alaska Peninsula, da tsibirin Amchitki [1,10], a kudu, bushewa kusa da San Diego, tsibirin Hawaiian.
Habitat: Studied talauci. Mafi yawa suna zaune a cikin pelagic yankin. Abinci galibi ya ƙunshi cefalopods da kifayen teku, kuma yana ƙayyade takamaiman wurin da jinsin ke ciki. Balagagge yana faruwa a tsawon jiki na 5.5-5.5 m; ɗan maraƙi ya kai 2.6-2.7 m [10, 11]. Lokaci na yin lalata da lokacin haihuwa. Bai yarda da zaman fursunoni ba: akwai sanannen sanadiyyar da aka tura wata matattarar kifi a kifin Aquarium na California, inda ya yi rayuwa ba ta wuce kwana guda ba, bayan da ya fadi a bangon tafkin.
Ngarfi: Ba a san adadin adadin beaks ɗin ba, kawai ana samun bayanan ɓarke. A cikin 1952-1962 A gefen gabar tsibiri na Kwamandanda ke da nisan mil 300, an fitar da kwari 16, kuma adadin kumburinsu a wannan gundumar bai kai buri 30 ba [2,3]. Aksasashe mafi yawa a gabas. ruwa na Japan, inda dabbobi 3-10 ke bushewa a shekara, akasarinsu a bangon zauren. Sagami da Izu Peninsula - babban yankin kamun kifi. Ana iyakance abubuwan iyakance. Kifi, bushewa da kuma gurɓatar da ruwa sune manyan abubuwanda ke iyakance adadin beran. A halin yanzu lokaci yawanta yana raguwa. Samun shekara-shekara a Japan har zuwa kwanan nan ya cimma burin 20-40. A cikin shekarun 1965-1970. Jafananci sun sami buri 189 (maza 132 da mata 57), akasarinsu a cikin ruwan zauren. Sagami da Sendai. Babban watannin kamun kifi (watan Fabrairu-Maris da Agusta-Satumba) suna nuna ƙaura yanayi na kwari. Yawancinsu an haƙa su a cikin wuraren ingantaccen abinci mai gina jiki a waje da matakin na ƙasa da layin haɗin zurfin zurfin 1000 m. A Rasha, ba a taɓa farautar beak ba. Wadannan lambobi masu zuwa suna nuna yawan mutuwar mutuwa ta bushewa: a gabar tekun Burtaniya a cikin shekarar 1913 zuwa 1977. akwai kararraki 37, Faransa (kawai a cikin 1971) - 7, Amurka a cikin 'yan shekarun nan - 15 shari'ar [9,10]. Cututtukan da ba a yi nazari ba. Daga cikin endoparasites, roundworms (nau'in 2 a cikin kodan, 1 a cikin hanjin) da kuma tefwatsin (nau'in 1 a cikin kitse na subcutaneous).
Tsaro: An jera shi a cikin IUCN-96 Jerin Ja, Shafi 2 na CITES, Shafi 2 na Yarjejeniyar Berne.
Bayanin
Yana girma zuwa mita 7 kuma yana iya nauyin tan 2-3. Launi daga launin toka mai duhu zuwa launin ruwan kasa mai zurfi. The hancin ne wawa. Tsammani na rayuwa har zuwa shekaru 40.
Masana ilimin dabbobi a Amurka sun gano cewa beak shine mai rikodin rikodin don zurfin da tsawon lokacin ruwa tsakanin dabbobi masu shayarwa. An dauki lokaci mai tsawo ana yarda da cewa dukkanin wadannan bayanan suna cikin hatiman giwayen Kudancin: an san shari'o'insu na tsawon mita 2,388 da mintuna 120. Masana kimiyya daga kungiyar bincike ta Amurka "Cascadia" sun sami nasarar haša masu amfani da tauraron dan adam a saman beaks guda takwas, wadanda suka rubuta sabon rakodin ruwa guda biyu. Animalaya daga cikin dabba ya kai zurfin mita 2,992, na biyun ya ɗauki tsawon mintuna 137.5 a ƙarƙashin ruwa.
Me kifin bek suke kama?
Kudin-lissafin - tsararraki masu matsakaici: tsayin jiki daga mita 4 (daraja na Peruvian) zuwa sama da mita 12 (yin iyo a arewacin). Jiki yana da ƙarfi, iska, mafi sauƙi a tsakiya. Farfin bangaran yana da ƙananan kaɗan; a daraja, suna komawa zuwa tarko a sassan jikin (idan ba a amfani dasu don motsawa).
Finfin dorsal ƙarami ne, yana nesa da 2/3 na tsayin jiki daga kai. Gashin wutsiya suna da fadi sosai idan aka kwatanta su da sauran cetacewan; Babu hutu tsakanin ruwan wukake. Tsakanin jajayen akwai huɗa guda 3 - wannan alama ce ta halayen dukkan beaks, a gabansu sun matso kusa, amma kada ku haɗa kai. An yi imanin ana amfani da waɗannan fayel ɗin a cikin ɗaukar ganima.
Babu wani daga cikin jinsin da yake da babban yanki wanda ke rarrabe hancin daga goshin, wanda aka samo a cikin sauran ɗimbin cetaceans da jijiyoyi, alal misali, wasu dabbobin ruwa. A cikin wasu nau'in, alal misali, a cikin yankin Atlantika, ɗanɗano yana da tsayi da fadi, a cikin wasu, alal misali, a cikin kuyvierov beak, gajarta ce kuma ba ta da ƙarfi.
Mafi kyawun halayen wannan dangi shine tsarin hakora. Wadannan kifayen suna da hakora biyu ko biyu, wanda a cikin manya ke ficewa ko da bakin rufe - abin da ake kira "tusks". Baya ga halittar Plavunov (Berardius), wannan halayyar tana tasowa ne kawai a cikin maza. Gemanin Tasmanian shine kawai jinsin da ke da hakora ban da warkoki. Mata da kananan dabbobi a cikin mafi yawan nau'ikan ba su da hakori. An yi imanin cewa rashi hakora yana da alaƙa da ƙwarewa cikin abinci na squids, waɗanda suke kamawa ta hanyar sha.
A bayyane yake ana amfani da Tushen azaman makamai, kuma mazan kusan dukkanin nau'ikan an rufe su da mayuka daga waɗannan hauren. Matsayi da sifar hakoran sun banbanta ga jinsuna daban (galibi ana amfani da wannan yanayin don tantance nau'in).
Baya ga lamba da wurin hakora, da goshin goshi da tsawon ciwan, ƙarancin bambance-bambancen da ke tsakanin wakilan dangi ba su da mahimmanci.
Iri na beaks da mazauninsu
A cikin dan gemu, akwai aƙalla jinsuna 20 cikin 6 na haɓaka. Dangane da adadin nau'ikan, sun mamaye matsayi na biyu a cikin tsari na Cetaceans bayan dabbobin dolphins. Abin takaici, saboda yawan wuraren zama da halayyar, mafi yawan dangi suna karatu mara kyau (an tattara bayanai game da su game da kadan kuma galibi ta hanyar dabbobin da suka mutu a bakin).
Wahala
Matakan ruwa na ruwa (genus Berardius) sune wakilai mafi girma na dangi. Ba kamar sauran ƙudan zuma ba, suna da haƙora 4 hakoran. Abun na baya a saman muƙamula na ƙasan babba da girma kamar girma, nau'ikan baya, an raba su da tazara ta wata ƙaramar rata, karami ce kuma mai siffa.
Harshen Arewa (Berardius bairdii)
An samo shi a Arewacin Pacific, daga 24 N a bakin tekun California har zuwa 63 N Tsawon jikin mutum zai iya isa mita 12.8, nauyi - har zuwa tan 15. Abin lura ne cewa a cikin wannan nau'in, mata sun fi maza girma.
Launi mai launin shuɗi-mai haske, wani lokacin tare da launin ruwan kasa, ƙarancin warin, wutsiya da baya lobes sun yi duhu, ƙasa tana da wuta. Maza manya daga kai zuwa ƙwanƙolin farare fari ne.
Wani wakilin kwayoyin halittar shine Kudancin Swimmer, wanda ke zaune a cikin ruwan sanyi na tekun Kudancin Hemisphere. A waje, ya yi kama da takwaransa na arewa, amma kaɗan kaɗan.
Gidajen zama
Yankunan waɗannan dabbobi masu shayarwa suna da faɗi sosai: suna rayuwa a cikin yanayi mai ɗumi, ruwan dumi da ruwan sanyi na tekuna. Bishiyoyi na iya rayuwa a cikin kowane teku, in ban da Arctic. Ana lura da nau'in daga Tierra del Fuego zuwa tsibirin Shetland.
Sun fi son wurare masu zurfin teku, suna iya nutsewa zuwa zurfin kilomita 3, yayin da suke kasancewa ba tare da iska ba tsawon awa 2.
A Rasha, beke ba su da yawa, galibi ana samun su a Gabas ta Tsakiya, Tekun Bering, Tekun Okhotsk, Tekun Japan da kuma bakin tekun Kamchatka. An samu keɓaɓɓun mutane a cikin Tekun Baltic. Ba zai yiwu a tsayar da takamaiman wuraren wuraren gwoza ba, yana yiwuwa ne kawai lokacin da aka jefa ƙwallan a bakin.
Wani madadin suna na Kifi Whale shine beak na Cuvier, wanda aka bayar don girmamawa ga mai binciken Georges Cuvier.
Kwalban kwalba
Halin halayyar ƙwayar karama (genus Nutperon) gajere ne, ƙoshin lafiya da ƙamushin goshi. Maza manya suna da manyan girma kashi biyu a kwanyar, wanda suke amfani da shi azaman makamai ko don kariyar kai. Guda biyu na nau'in hakoran lu'u-lu'u suna nan a kan gefen ƙananan muƙamuƙin.
Tall-da aka biya a kwalban kwalba (Hyperoodon ampullatus)
Jinsunan suna zaune a Arewacin Atlantika, daga 77 N daga gabas zuwa tsibirin Cape Verde kuma daga Yankin Davis zuwa Cape Cod a yamma. Hakanan an gan shi a yammacin Bahar Rum da kuma Tekun Arewa.
Yawancin waɗanda aka yi nazari kawai suna rayuwa a duk shekara zagaye a gabashin gabashin Kanada, kusa da zurfin maɓuɓɓugar teku. An yi wa wakilan dukkan maza da mata rajista a cikin wannan yankin, kuma wasu mutane an yi rikodin su tsawon shekaru. Matsakaicin matsakaiciyar ƙungiyar ya kasance mutane 4 ne, amma an kuma sami gungun gungun har da dabbobi kusan 20.
Tsawon jikin mutum zai iya zuwa mita 9.8, nauyi - har tan 7.5.
Matasa suna cikin duhu sama da haske a ƙasa, yayin da suke girma, dabbobin suna haskakawa, wani farin tabo ya bayyana a goshin maza, wanda ke ƙaruwa tare da shekaru. A jikin maza akwai karancin abin da ya fi na kwari.
Don ƙara girman sikelin, an yi amfani da tsawon lokacin zamansa cikin ruwa sama da minti 80.
Anyi nazarin jinsunan da sukafi dacewa fiye da wani wakilin kwayoyin, Flam-Born Born, amma an yi imanin cewa ilimin halittar jinsunan biyu iri daya ne.
Beak salon rayuwa
Mafi sau da yawa, beaks kan yi iyo shi kaɗai, ƙasa da yawa sukan tattara a cikin ƙananan garken mutane da yawa. Gefen ya yi rayuwa a karkashin ruwa na tsawon rabin sa'a, sannan ya fito ya huta na mintina 10, ya rage a farfajiya.
Abincin gwoza ya ƙunshi kifayen teku masu zurfi da mollusks daban-daban. Nagartar da jinsin halittu ya dogara da samar da abinci.
Neman abinci, beaks na iya yin tafiya mai nisa, ta ruwa zuwa zurfin zurfafa. Masana kimiyya sun gano cewa beaks shahararru ne a cikin zurfin narkar da dabbobi a tsakanin sauran dabbobi masu shayarwa.
Gemu bai yarda da zaman talala ba. Sai kawai kawai batun isar da baki zuwa akwatin kifayen da aka yi rikodin, wanda dabbar dabba ba ta rayuwa ko da rana guda. Klyuvoryl ya yi kokarin fita daga akwatin kifayen kuma ya fadi a bangon sa.
Bishiyoyin suna iyo zuwa zurfin kilomita uku, kuma suna iya rayuwa a ƙarƙashin ruwa sama da awanni 2.
Beak kiwo
Lokacin kiwo yana tsawaita sosai, kuma lokacin kiwo yana da kusan shekara. Rashin tsufa na faruwa a tsawon jiki tsawon mita 5-5.5.
Tunda jikin waɗannan dabbobi masu shayarwa suna haɗuwa da raunuka iri-iri, an yi imanin cewa yayin lokacin kiwo, maza suna gwagwarmaya don mata, wannan shine dalilin da yasa suke samun rashin tsoro.
Mafi yawan lokuta, ana haihuwar guda ɗaya cikin mace. Lokacin haihuwa, tsawon jaririn ya kai mita 2.5-3. Bishiyoyi kusan shekaru 40.
Ba a san kaɗan game da salon rayuwa, halaye da dabi'un beaks ba, saboda ba a fahimci nau'in halitta ba.
Ostiraliya noth
Lancet na Australiya (Indopacetus pacificus) shine kawai jinsin halittar. Kusan ba'a san shi ba kuma sananne ne kawai daga ƙarshen 90s na karni na XX don manyan kwano biyu (ɗayan daga Queensland, na biyu daga Somalia). An ba da shawarar cewa kwanan nan bita ga bayanai game da ci gaban cetaceans wanda ba a bayyana ba, mai kama da ƙwallan katako, a cikin yankin Indiya-Pacific na wurare masu zafi yana iya dacewa da wannan jinsin.
Lentes
Tsarin jikin mace mai daraja ya bambanta kadan a cikin jinsuna daban. Babban bambance-bambance sune siffar da matsayin nau'in hakora guda biyu waɗanda suka ba wa ɗabi'ar sunan shi "Mesoplodon" (dauke da hakora a tsakiyar muƙamula), daga ƙananan hakora a ƙarshen ƙananan muƙamula zuwa faɗin haƙora 30 cm a tsakiyar muƙamuƙin. Bugu da kari, tsawon snout ya bambanta dan kadan a cikin jinsuna daban.
Duk hakora na lancet wasu ƙananan wakilai ne na dangi (tsayin jiki 4-6,8 m).
Lanan wasan lancet-toothed lancet (Mesoplodon densirostris) shine mafi yawan nau'ikan wannan dabi'ar, kuma mafi yawan binciken (yawancin bayanan game da shi an tattara su a cikin Bahamas).
Ana samo shi a cikin ruwa mai tsananin zafi da yanki mai zafi, yawanci a zurfin zurfin mita 200-1000, musamman maɓallin ruwa mai zurfi.
Tsawon jikin yana kan mita 4.5, nauyi - 1 tan. Matasa suna cikin duhu sama da haske a ƙasa, manya sun yi duhu gaba ɗaya, daga launin ruwan kasa zuwa launin toka mai duhu. Maza yawanci yawanci suna rufe da babban hanyar sadarwar ƙatsi da taɓar daga saman kai zuwa ƙarshen cincin. Siffar halayyar jinsin itace karayar kashin baki; a cikin maza manya, manyan hakora 2 masu tsinkaye sama sama da kan dabbar.
Yawan haƙoran haƙoran haƙoran haƙoran haƙora yawanci ana samunsu cikin gungun mutane har 7, waɗanda suka ƙunshi mata manya tare da 'yan sandansu, da wuya yawancin maza suke kasancewa ɗaya a cikin su. Mai yiwuwa wannan nau'in ya auri mata fiye da daya, yayin da maza ke motsawa tsakanin gungun mata manya.
Baya ga nau'in da aka bayyana, wakilan halittar suma sune Grey's lancet, Atlantika, Jafananci, da kuma lancet na Peru, da sauransu.
Gemun Tasmania
Iyakar nau'in halittar jinsi na Tasmanian beak (Tasmacetus makiyadi) ana samun su ne a kudanci. Tana da dogon kunkuntar sananniya tare da manyan hakora guda biyu a ƙarshen ƙananan muƙamuƙin maza. Duka jinsi suna da ƙananan 26-27 ƙananan hakora a cikin ƙananan jaw da 19-21 na hakora guda ɗaya a cikin babba. Wannan shine asalin halittar da hakora a cikin babban muƙamuƙi.
Tsawon jikin waɗannan dabbobin yana matsakaicin mita 7, nauyi - 2-3 tan. A baya da bangarorin gemun Tasmani suna launin ruwan kasa mai duhu, ƙasa tana ma kirim.
Kare cikin yanayi
Kamar yadda aka ambata a baya, rayuwar beaks ba shi da kyau. Ba a san kaɗan game da matsayin su da barazanar su ba.
A baya can, rayuwa a cikin ruwa mai zurfi ya kare su daga tasirin da aka yiwa wasu nau'in gabar teku, amma kwanan nan lamarin ya fara canzawa. Rashin iska da ke haifar da gurɓataccen taro na waɗannan dabbobin a tsakiyar 80-ies na ƙarni na karshe, kuma an sami karuwar abun da ke tattare da gurɓatattun abubuwa a cikin mai su. Wani lokacin ana samun jaka a filastik ko fim a wasu lokuta a cikin ciki na kifayen kifi - wannan yakan zama dalilin mutuwar su. Bugu da kari, tare da bunkasuwar kamun kifayen teku a duniya, kifayen kifi za su iya kama sahun kifayen, kuma nan gaba ana iya fuskantar barazanar raguwar nau'in kifayen forage.
Game da tsammanin rayuwar yawancin nau'ikan, kimiyya ba ta yin shiru. Sanannen samfuran karatuna masu zurfi game da shekaru 37 da haihuwa.
Yawan bebaye
Ba a samun amintaccen bayani kan adadin beaks ɗin ba. Don rage adadin nau'in yana haifar da gurbata ruwa, amo, sonar da kuma motsa jiki na soja. Additionari ga haka, suna mutuwa cikin raga. Bishiyoyi kuma suna mutuwa daga abubuwan halitta, alal misali, daga sakamakon cututtukan ƙwayoyin cuta, ƙwayoyin cuta da kuma cututtukan da suke zagaye.
A Japan, an dade ana gudanar da kamun kifi. A cikin 70s a cikin wannan shekara kowace shekara ana samar da kusan burin 50. Yau an haramta kamun kifi a kansu. Sau da yawa akan jefa bebaye, ba a fahimci dalilan wannan halayyar. Misali, a Amurka an kirkiri shari'oi 19 na gungun bakin tekun, guda 17 kan tsibiran Kwamandan, da kuma kararraki 25 a Burtaniya. Daga waɗannan ƙananan lambobi, zamu iya yanke hukuncin cewa wannan nau'in ƙananan ƙananan ƙananan ne.
Ta hanyar mutanen da aka fitar ne za ku iya sanin kimanin adadin nau'in.
Bishiyoyin suna cikin Red Book, amma ba a sani ba ko jinsin na bukatar kariya, tunda babu wani bayani kan yalwar sa. Bishiyoyi suna da wahalar fahimta, saboda suna zaune a wurare da mutane ba sa iya zuwa. Akwai buƙatar haɓaka wani shiri na musamman na ƙasa da nufin yin nazari kan rayuwar beaks da lambobin su.
Idan an sami kuskure, a zabi wani ɗan rubutu sai a danna Ctrl + Shigar.
Rarraba da yalwa
Bishiyoyin kudanci suna yadu cikin ruwan gishiri na dukkan tekuna, daga tsaunin zuwa yankuna dake cikin hemispheres biyu. Matsayinsu ya ƙunshi mafi yawan ruwan teku na duniya, ban da wurare masu laushi da yankuna polar.
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Hakanan ana iya samun su a cikin tekuna da yawa a rufe, irin su Caribbean, Jafanawa da Okhotsk. A cikin yankin California da Gulf of Mexico. Banda shi ne ruwan Tekun Baltic da na Tekun Bahar, duk da haka, wannan shine kawai wakilin 'yan cetaceans da ke rayuwa a cikin zurfin Bahar Rum.
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Ba a tantance takamaiman adadin waɗannan dabbobi masu shayarwa ba. Dangane da bayanai daga bangarori daban-daban na bincike, ya zuwa shekarar 1993, kimanin mutane 20,000 ne aka rubuta a gabashi da wurare masu zafi na Tekun Pacific. Binciken da aka maimaita irin kayan guda ɗaya, wanda aka daidaita don mutanen da suka ɓace, ya nuna 80,000. Bisa ga ƙididdigar daban-daban, kusan 16-17 dubu beaks ake samun su a yankin Hawaiian.
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Kwakwallan Cuvier babu shakka yana daya daga cikin nau'ikan cetaceans a duniya. Dangane da bayanan farko, jimlar yakamata ya kai 100,000. Koda yake, ƙarin bayanai dalla-dalla game da lambar da kuma abubuwan da mutane ke ciki.
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Halaye da Abinci
Kodayake ana iya samun kwandunan Cuvier a zurfin ƙasa da mita 200, suna ba da fifiko ga ruwan nahiyoyin tare da tsawan tekun. Bayanai daga kungiyoyi masu dumbin yawa a Japan suna nuna cewa galibi ana samun wannan tallafin ne a zurfin zurfafa. An san shi a tsibirin teku masu yawa da wasu tekuna da aka rufe. Koyaya, da wuya ta zauna kusa da gabar tekun bahar. Banda shi ne ruwan karkashin ruwa ko kuma yankunan da ke da fadi tare da kwararar bakin teku da zurfin ruwa. Asali, wannan nau'in pelagic ne wanda ke iyakance tsakanin 100C isotherm da kwanon wanka na 1000m.
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Kamar kowane ɗan cetaceans, beaks sun fi son farauta cikin zurfi, tsotsa abubuwa a bakinsu a kusa. Yin ruwa har zuwa minti 40 da rubuce.
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Nazarin abubuwan da ke cikin ciki ya sa ya yiwu a zartar da yanke shawara game da abincin, wanda ya ƙunshi ƙananan squids mai zurfi, kifi da crustaceans. Suna ciyarwa a ƙasan da a cikin ruwa ruwa.
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Lafiyar Qasa
Canje-canje a cikin biocenosis a cikin mazaunin gemu yana haifar da canji a cikin kewayon mazaunin su. Koyaya, ba zai yiwu a gano ainihin haɓakar dake tsakanin ɓarnar nau'in kifayen mutane da kuma motsin waɗannan kaset ɗin ba. An yi imani cewa canjin yanayin yanayin zai haifar da raguwar yawan jama'a. Kodayake wannan salon ya shafi ba kawai don beaks ba.
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Ba kamar sauran manyan dabbobi masu shayarwa na zurfin teku ba, ba a yin farauta don beran. A wasu lokutan sukan shiga yanar gizo, amma wannan banda ka’ida.
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Tasirin hasashen canjin yanayin duniya game da yanayin ruwa na iya shafan wannan nau'in na kifayen, amma har yanzu ba a bayyana yanayin tasirin ba.