• Jikin yana da laushi, baki ko duhu launin toka a launi na baya ya bambanta da haske launin toka ta bangarorin.
• Short fari ko launin toka mai haske.
• Farin ciki da ciki.
• Babban matakin jinkirta a sama.
Halin sihiri, bakin fili mai haske launin toka a bayan fin-dorsal.
• Mai sauri da kuzari, sau da yawa tsalle daga ruwa.
Sau da yawa rakiyar jiragen ruwa suna shawagi a kan bakan gizo.
Yawancin lokaci ana samunsu cikin gungun mutane sama da 30, wani lokacin suna samun garken dabbobi da ɗaruruwan mutane.
Lokacin farauta, dabbobin da aka hada da dabbar dolfin Atlantika mai fararen fata na iya samarwa. Wani lokaci tare da manyan kifi Whales.
Wasu lokuta sukan kirkiro garkunan gauraya tare da dabbobin ruwa masu launin toka, kuma suna haɗuwa da manyan kifaye.
a cikin 2,5-z, 0 m,? 1.7-2.6 m, n / a 1.1-1.2 m. Mafi yawan baya baƙi ne ko launin toka mai duhu, amma a bayan ƙarancin fitar akwai alamar launin toka ko farar fata (ƙarancin da aka ambata cikin samari), launin toka mai haske tare da
fararen fari daga ido har zuwa dubura, farin ciki. Maɗaukaki (musamman ma a cikin maza) jinjirin ƙarancin fin. Kansa mai zagaye tare da ɗan gajeren zango, yawanci haske launin toka ne ko fari.
Bambanci daga nau'ikan nau'ikan
An bambanta dabbar dolfin Atlanta da rashin farin tabo da rostrum mai duhu, da kuma sifar farin dutsen a gefenta. Ya kamata a tuna cewa launi da dabbar dolfhins mai fararen fata na iya bambanta, ana samun rostrum mai duhu a wasu mutane. Squirrel karami, mafi m jiki, rostrum dogon da launi.
Mafi yawan nau'ikan dabbar dolphin a cikin Tekun Barents. Jimlar nau'in halitta aƙalla dubun dubatan mutane.
IUCN - LC, Rasha - Kashi na 3.
Rayuwa da halaye
Ana samunsu cikin rukuni na 5-50 na dabbobi, wani lokacin kuma sukan tattara cikin garkunan mutane ɗari da dama. Matan da ke da sanduna suna taruwa a wuri daban. Wani lokaci sukan haɗu da garkunan dabbobi da dolphins masu farin gashi. Sau da yawa tsalle daga ruwa. Suna ciyar da kifi, crustaceans da cephalopods. Sau da yawa shirya kullun farauta a kasan.
Ya kai ga balaga ya kai shekaru 7-12. Cutar ciki shine watanni 11. Tsammani na rayuwa, a bayyane yake, kimanin shekaru 30-40.
Halin bincike na yanzu
A cikin ruwa na Rasha ba a yi nazari ba. Babban
Rarraba da kuma yawan jama'a
An samo shi a Tekun Barents. Wataƙila, lokaci-lokaci za su iya shiga Tekun Fasha da kuma ɓangaren kudu na Bahar Baltic. Fi son wuraren da ba za a iya amfani da su fiye da dabbar dolfin Atlanta
Kifi da mahimmancin tattalin arziki
A adadi kaɗan daga waɗannan dolphins ana kama su a bakin tekun Greenland da Labrador.
Kamar sauran dabbobi masu shayarwa na Arewacin Atlantika, dabbar dolphins masu launin daskararre suna matukar fuskantar barazanar gurbata yanayi ta hanyar karafa da gwanayen halittu. Yawan dabbobin da ke mutuwa sakamakon kamun kifi da kamun kifi sunada kadan kuma baya haifar da barazana ga rayuwar jinsin.
Fitowar farin dabbar dolfin
Matsakaicin tsayin jikin mace mai dabbar dabbar dolfhin yana cikin kewayon mita 2.9-3.1, mata - mita 2.6-2.8. Girman girman kai ya kai daga 42 zuwa 48 santimita.
Suna da haɓaka sosai na zaren, wanda yawanci suna kasancewa 17-18% na jimlar jiki duka.
Karatun caudal mai matsakaici ne a girmansa, yana tuna fasalinsa kamar wata na ƙuruciya. Doarshen ƙarancin doguwar sifa ce ta yau da kullun, yana ƙaruwa zuwa girman 30 cm tare da baki .. Gashin wannan nau'in dabbar dolphin ba ta daɗewa ba, da wuya ta wuce sama da cm 5. Yawancin lokaci tana haɗe da kafada mai rauni, kuma tana da fasalin tsaka mai wuya. Gashinan lebe babba suna yawan haske ko fari.
Bangarorin suna da duhu, kuma launi mai duhu yana gangara zuwa tushe na ƙashin ƙyallen. Galibi ana samun madaidaiciyar madaidaiciya madaidaiciya daga tushe daga cincin pectoral zuwa kusurwar bakin, sama da akwai wani farin fari. Duk ƙusoshinsu ana fentin su baki ne ko baki, amma wani lokacin ƙasan caudal da ƙashin hancin suna fentin launin toka.
Dabbar dolphin fararen fata (Lagenorhynchus albirostris).
Bakin farin dolfhins mai farin jini yana alfahari da manyan haƙoran hakora 6 mm. A cikin muƙamuƙi na sama akwai nau'in 22-28 na irin waɗannan hakora, lamba ɗaya a cikin ƙananan.
Mazaunin dabbar dolfhin da ke fuskar fari
Waɗannan kyawawan dabbobi masu shayarwa suna zaune a Arewacin Atlanta daga bakin Faransa har zuwa Tekun Barents. A ɗaya ɓangarorin, kewayon halitta yana iyakance ga Labrador da Davis Strait, har zuwa Massachusetts. Yawancin lokaci ana yaduwa a cikin Bahar Norway, kazalika a cikin Tekun Arewa a gefen iyakar Norway da Ingila. Manyan garkunan wannan nau'in an gansu a cikin Varangerfjord, sun kai adadi dubbai da yawa.
A lokacin hunturu, daukacin jama'a na ƙaura zuwa yankuna na kudancin iyakar, kusa da zafin rana. Ana samunsa ko'ina a cikin Rasha a gefen tekun Murmansk, har ma da kusa da Masarautar Kifi. Akwai lokuta da yawa daga kallon farin dabbar dolphin a cikin Tekun Riga da Finland, amma ana iya sanya wannan matsayin na waɗannan dabbobi maimakon ban da na banda. Yana zaune a bakin tekun Sweden a cikin Baltic.
Game da launi, mafi yawan jikin farin dabbar dolphin launin toka ne ko duhu ne a launi, amma ciki da baki suna fari fari, wanda ya ba da suna.
A cikin Davis Strait, suna bayyana tare da fareti a cikin bazara, lokacin da kifayen beluga da narwhals, waɗanda suke da haɗari ga dabbobin ruwa, sun bar daga can. Koyaya, har zuwa Nuwamba ba za a sake haɗuwa da su a can ba - suna ƙaura zuwa kudu.
Rayuwa da abinci mai dabbar dolfhins
Kamar sauran nau'ikan halittu, waɗannan dabbobin ruwa dabbobi ne na zamantakewa. Suna zaune ne a rukuni-rukuni na mutane 5-8, kuma sau da yawa a cikin waɗannan rukunoni akwai mazajen da ke da tsattsauran ra'ayi waɗanda dangantakarsu ke da ƙarfi sosai. Idan akwai isasshen abinci, kuma abu ne mai sauƙin kama, an kafa manyan garkuna, wasu lokuta lambobi ne zuwa dabbar dolfin 1000. Lokacin da kayan abinci suka cika, garken ya sake zuwa kananan kungiyoyi, kuma ya bazu cikin neman abinci.
A lokacinsu na kyauta daga farauta, waɗannan 'yan cetaceans suna son yin wasa da wauta a kusa, suna haɓaka zuwa gudun 30-40 kilomita awa daya. A lokaci guda, suna yin tsalle-tsalle mai banƙyama, suna tashi saman ruwa don 10-12 m.
Ba a san kaɗan game da rayuwar dabbar dolfhin da ke fuskantar fari ba, saboda dabbobi masu shayarwa ke da wuya.
Sau da yawa suna rakiyar jiragen ruwa saboda sha'awar su. A matsayin wadatarwa, waɗannan dabbobin ruwa ba masu maye ba ne game da komai: duk nau'ikan kifayen ƙasa, mollusks, crustaceans - wannan duka abinci ne ga dabbar dolffhin da ke fuskantar fari. An samo lambar, herring, capelin, mackerel, da sauran nau'ikan kifayen a cikin ciki na mutanen da aka yi nazari. Hakanan ana ci squids a hankali. Wani lokaci, don wadatar da jiki tare da mahimman bitamin da ma'adanai, algae da tsire-tsire masu ruwa suna zuwa abincin dabbar dolphin.
Shayar da fararen dabbar dolfhins
Yawancin lokaci wasannin da aka dace na wannan nau'in dolphins suna faruwa ne a lokacin rani ko farkon faɗuwar rana. Namiji yakan kula da mace kuma ya hadiye ta. A tsakiyar bazara mai zuwa, an haifi dabbar dolp, girmanta ya kai 110 cm zuwa 160. Ba a haɗa shi da mahaifiyar tun farkon shekara ta rayuwa, bayan haka ya fara ciyar da kansa, kuma ya shiga cikin iyo. Alas, ba zai yiwu a faɗi dalla-dalla game da haihuwar dabbar dolfhin ba - an yi nazari sosai, kuma har yanzu masanan kimiyya ba su san su ba.
A matsakaici, tsawon rayuwar dabbar dolp a cikin mazauninta na shekaru 35-40 ne, amma a zaman talala, an rage tsawon rayuwa sosai.
Wannan nau'in dabbar dolphins ba a ba da shawarar a cire ta daga yanayin halitta ba, tunda ba za a iya samun haihuwa daga cikin su ba a zaman fursuna, wanda ke nufin cewa irin waɗannan mutane za su yi jinkirin mutuwa.
An tabbatar da amfanin amfani da duban dan tayi ta hanyar wadannan dabbobi akan mutane. Saboda wannan matakin, har da wasa, ana amfani da waɗannan dabbobi masu shayarwa a wasu wuraren shakatawa na ruwa da kuma dabbobin ruwa.
Idan kun sami kuskure, da fatan za selecti yanki na rubutu kuma latsa Ctrl + Shigar.