Ɗaya daga cikin nau'in nau'i bakwai na sharks da haskoki na ruwa mai zurfi suna fuskantar barazanar bacewa saboda yawan kifin, a cewar sabuwar shekara takwas. binciken fito a yau a cikin jarida Science.
Musamman, bincike ya gano cewa sharks da haskoki ana kama su a matsayin kamun kifi a cikin kamun kifin da ke nufin wasu nau'ikan masu kima na kasuwanci. Sai dai ana ajiye su ne saboda darajar mai da namansu. Wannan, tare da fadada kasuwancin man hanta na shark a kwanan baya, ya haifar da raguwar yawan jama'a.
"Kusan rabin sharks na duniya ana samun su a kasa da mita 200, a ƙarƙashin inda hasken rana ke shiga cikin teku," in ji Nicholas Dulvy, Babban Farfesa na SFU na Kimiyyar Halittu da Kariya.
"Lokacin farko da suka ga hasken rana shine lokacin da aka kai su kan tudun jirgin kamun kifi."
Wannan sabon bincike na Dulvy ya tantance nau'ikan sharks da haskoki sama da 500 tare da daukar fiye da masana 300 daga ko'ina cikin duniya. An gano cewa kimanin nau'ikan nau'ikan 60 ne ke fuskantar barazanar bacewa saboda kifin da ya wuce kifaye, bisa ga ka'idojin kungiyar Jajayen Halittu ta Kasa da Kasa don Kare Halittu (IUCN).
Dulvy ya ce, "Yayin da manyan tekuna da kuma tekun bakin teku ke raguwa a kasashe da dama na duniya, muna karfafa masunta kwarin gwiwar yin kamun kifi a tekun kuma ya zama mai amfani da fasaha wajen kamun kifi har zurfin kilomita," in ji Dulvy.
Sharks na ruwa mai zurfi da haskoki suna daga cikin kashin baya na ruwa da suka fi dacewa saboda tsawon rayuwarsu da ƙarancin haihuwa. Suna da zagayowar rayuwa kama da dabbobi masu shayarwa na ruwa kamar su whales da walrus, waɗanda a da ake amfani da su don mai kuma yanzu suna da kariya sosai.
Dulvy ya ce "Yawancin kifin ruwa mai zurfi da haskoki za su iya jure wa matsi kaɗan na kamun kifi." "Wasu nau'in na iya ɗaukar shekaru 30 ko fiye don girma, kuma maiyuwa har zuwa shekaru 150 a cikin yanayin Greenland Shark, kuma kawai suna samar da 'ya'ya 12 a duk rayuwarsu."
Sharks da haskoki suna kula da haɓakarsu ta hanyar samun hanta mai kitse, amma wannan kitsen yana da daraja sosai. Ana amfani dashi ko'ina a cikin kayan kwalliya, kayan abinci masu gina jiki da magunguna, kamar alluran rigakafi. Haka kuma an sami karuwar kamun kifi na kankara don tallafawa buƙatun skate fermented, abincin gargajiya na Koriya.
“An samu babban nasara wajen daidaita cinikin shark fin. Yanzu ya kamata mu mai da hankalinmu wajen daidaita cinikin man hanta a duniya.”
Baya ga daidaita cinikin man hantar shark na kasa da kasa, binciken ya kuma amince da yunkurin kare kashi 30 cikin 2030 na tekunan duniya nan da shekarar 30. Kare kashi 200 cikin 2,000 na zurfin teku (mita 80 zuwa 800) zai samar da kashi 30 cikin XNUMX. na nau'ikan kariyar juzu'i a cikin kewayon su. Hana kamun kifi da ke ƙasa da mita XNUMX a duniya zai samar da kashi XNUMX cikin XNUMX na mafaka a tsaye ga kashi uku na barazanar kifayen ruwa da haskoki.
Aikin Global Shark Trends Project haɗin gwiwar Jami'ar Simon Fraser ne, Ƙungiyar Ƙwararrun Shark ta IUCN, Jami'ar James Cook, da Cibiyar Aquarium ta Georgia, wanda aka kafa tare da tallafi daga Asusun Kare Shark.
Jeff Hodson ne ya rubuta
Source: SFU
