Doguwa mai tsayi (mai fikafikai) shark (Carcharhinus longimanus) wakili ne na kifaye masu rai.
Rarraba dogon kifin shark.
Dogon tsuntsayen kifayen sharks suna rayuwa a cikin ruwa mai zafi kuma ana rarraba su sosai a cikin Tekun Indiya, Atlantic da Pacific. Waɗannan kifayen kifayen suna yin ƙaura tare da ruwa tare da Kogin Gulf a lokacin bazara. Hanyoyin ƙaura suna gudana cikin ruwan Maine a lokacin bazara, kudu zuwa Argentina a yammacin Tekun Atlantika. Yankin su na ruwa ya kuma haɗa da kudancin Fotigal, Tekun Gini da arewacin tsibirin Tekun Atlantika. Sharks suna tafiya gabas daga Atlantic zuwa Bahar Rum a lokacin hunturu. Hakanan an samo shi a cikin yankin Indo-Pacific, wanda ya haɗa da Bahar Maliya, Gabashin Afirka zuwa Hawaii, Tahiti, Samoa da Tuamotu. Nisan da kifin yakai kilomita 2800.
Mazaunan dogon kifin shark.
Dogon finafinan kifin sharks suna rayuwa a cikin yankin pelagic na teku. Suna ninkaya aƙalla mita 60 a ƙasa da saman ruwa, amma wani lokacin a cikin zurfafan ruwa har zuwa mita 35. Wannan nau'in ba ya kusanto gabar teku.
Wasu kungiyoyin kifin kifin shark suna da alaƙa da takamaiman yankuna inda wuraren da ke raƙuman ruwa suke, kamar su Great Barrier Reef. Sau da yawa ana samun su a cikin mahalli tare da babban taimako na tsaye. Hakanan ana samun shi a yalwace a cikin ɗakunan ruwa na ruwa, waɗanda ƙananan ƙananan raƙuman ruwa ne tsakanin tsarin murjani. A irin waɗannan wuraren, kifi na farauta da hutawa.
Alamomin waje na dogon shark
Dogayen finafinan kifin kifi sunaye daga sunayensu daga dogayen finsussu masu faɗi tare da gefuna kewaye. Farkon dorsal fin, pectorals, caudal (babba da ƙananan lobes), da kuma ƙoshin pelvic tare da fararen launuka masu zagaye. Yankin gefen jiki na iya zama launin ruwan kasa, launin toka ko shuɗi-tagulla, mai shuɗi-shuɗi, kuma cikin yana da datti fari ko rawaya. Wannan takamaiman launi yana haifar da sakamako mai banbanci kuma yana rage yiwuwar gano ganima.
Jiki na dogon finafinan kifin Sharks ya cika da gajere, hanci mara kyau. Mata yawanci sun fi maza girma da tsayi na tsawon mita 3.9 kuma nauyinsu ya kai kilogram 170. Maza na iya kaiwa mita 3 kuma nauyinsu ya kai kilogiram 167. Suna da babban fin fes wanda yake basu damar yin sauri a cikin ruwa. Hakanan yana ƙara kwanciyar hankali ga motsi kuma yana taimakawa haɓaka saurin cikin sauƙi. Finafinan caudal shine heterocercal.
Idanun suna zagaye kuma suna da membra na lalata.
Hancin hanzari ya tsage. Bude bakin mai siffar jinjirin wata yana a kasa. Akwai nau'i 5 na gill. Hakoran da ke kan ƙananan muƙamuƙan suna da kunkuntun, a tsorace, a saman muƙamuƙin suna da murabba'i mai faɗi uku, sun fi faɗo da haƙoran ƙananan muƙamuƙin da kewayen gefe.
Yammatan yara fensins ne masu launin baƙar fata, kuma ƙarshen ƙarshen fari yana da rawaya mai launin rawaya ko haske. Baƙin launin fata baƙar fata sannan ya ɓace kuma farin launi na halitta ya bayyana a saman fincin.
Dogon kyank shark kiwo.
Dogon kifin sharks gabaɗaya yakan haifa kowace shekara biyu a farkon watannin bazara. Wannan nau'in yana da rai. Maza da mata suna yin 'ya'ya daga shekara shida zuwa bakwai. Emfrayos suna ci gaba kuma suna samun abinci a jikin mace. An haɗa amfrayo ta amfani da igiyar cibiya, wanda ke taimakawa sauƙaƙewar abubuwan gina jiki da oxygen zuwa amfrayo. Ci gaba yana ɗaukar watanni 9-12. A cikin zuriyar, akwai 1a 1an 1-15, tsayinsu daga 60 zuwa 65 cm.
Dogon finafinan kifin shark suna da tsawon rai na shekaru 15 a cikin daji. Duk da haka, an rubuta mafi yawan lokacin zama - shekaru 22.
Halin da yawa na shark
Dogayen kifin Shark ne masu cin karensu babu babbaka, kodayake wani lokacin sukan kafa makarantu lokacin da abinci ya wadata. Don neman abin farauta, suna yin iyo a hankali, suna motsawa daga wannan wuri zuwa wancan, suna aiki tare da ƙanshin fuka. Akwai wasu lamura idan irin wannan kifin kifin kifi ya rataye a yanayin rashin motsi, wannan yanayin yakan faru ne yayin da kifin ya kasance cikin hayyaci ya daina motsi. Dogon finafinan kifin shark suna sakin pheromones don yiwa yankinsu alama.
Ciyarwar fin fin kifin shark
Dogon tsuntsayen sharks suna cin ganyayyakin kifi irin su stingrays, turtles teku, marlin, squid, tuna, dabbobi masu shayarwa, gawar. Wani lokacin sukan taru a kusa da jirgin suna tara kayan abinci.
Ba da daɗewa ba yan kifin kifin shark suka taru a rukuni-rukuni; yayin aiwatar da ciyarwa, suna motsawa cikin hanzari suna kore juna daga ganima. A lokaci guda, suna tsananin rugawa don kama kifi, kamar mahaukaci, lokacin da suke cin abinci iri ɗaya tare da wasu nau'in kifayen.
Matsayin halittu na dogayen fin shark.
Dogon tsuntsayen kifayen suna tare da remoras (na dangin Echeneidae), suna manne da jikin masu cin abincin teku kuma suna tafiya tare da su. Kifi makale yana aiki a matsayin masu tsabtace jiki, suna cin ƙwayoyin cuta na waje, kuma suna ɗebo tarkacen abinci daga masu masaukin su. Ba sa jin tsoron kifaye da yin iyo sosai tsakanin fincinansu.
Dogon tsuntsayen kifayen suna taimaka wajan daidaita daidaituwa tsakanin kifaye na teku, kamar yadda masu cutarwa suke shafar kifin da suke cinyewa.
Ma'ana ga mutum.
Dogayen kifayen kifayen dogaro ne, saboda haka doguwar dokin tasu na wahala a cikin kifin mai tsawo. Yayin kamun kifi, ana yanke shi kawai, kuma masunta suna watsar da gawar. Wannan yana haifar da mutuwar shark.
Yawancin sassan jikin kifin shark suna sayarwa da kyau. Ana amfani da babban fin fin a abincin gargajiya na Asiya don shirya jita-jita na kifin kifin shark, kuma ana ɗaukar miyan a matsayin mai ɗanɗano a cikin abincin Sinawa. Kasuwannin kifi suna sayar da daskararre, kyafaffen nama da naman sabo. Ana amfani da fata Shark don yin tufafi masu ɗorewa. Kuma man hanta shark shine tushen bitamin.
Ana girbe guringuntsi na Shark don binciken likita a cikin neman maganin cutar psoriasis.
Matsayin kiyayewa na dogon fin shark.
An kama kifin sharkoki na dogon lokaci a cikin adadi mai mahimmanci, kusan ko'ina, inda akwai layin dogon layi da ƙarancin kamun kifi. Galibi ana kama tuna ne ta hanyar dogon layi, amma kashi 28% na abin da aka kama ya faɗi ne a kan manyan kifaye. A wannan halin, kifin yana da rauni sosai lokacin da aka kama shi da raga kuma basu tsira ba. Kama-kama da wannan nau'in kifin kifin ya yi yawa, shi ya sa aka sanya dogon kifin kifin a matsayin jinsin "masu rauni" daga IUCN.
Adana waɗannan masun kifin na buƙatar haɗin kan ƙasashe a duniya. An tsara yarjejeniyoyin kasa da kasa ga jihohin da ke gabar teku da kuma kasashen da ke kamun kifi, wadanda ke nuna matakan tabbatar da kiyayewa na tsaffin kifaye. An dauki wasu matakai don hana safarar hatsari a cikin kasashe daban-daban da kuma wuraren da ake kiyaye ruwa. Dogon finafinan kifin kamar yadda CITES Shafi II ya kare suna cikin haɗarin halaka.
