Kifi na Arewa

Kifin arewacin kogon arewa ( Amblyopsis spelaea ) ana samunsa a cikin kogo ta Kentucky da kudancin Indiana . Ƙungiyar Ƙasa ta Duniya don Kare Halittu ta lissafa nau'in a matsayin kusa da barazana. 

Zagayowar rayuwar kifin kogon arewa ya haɗa da matakin protolarval. A wannan mataki, ƙwai da waɗanda kwanan nan suka ƙyanƙyashe cikin protolarvae uwa ce ke ajiye su a cikin ɗakin gill. Yaran sun zama yin iyo kyauta kuma suna iya barin. Kifin kogon arewa yana rayuwa har zuwa matsakaicin shekaru aƙalla shekaru goma kuma ya kai girman jima'i a kusan shekaru shida.  Wasu ƙididdiga sun nuna cewa samfurori na iya rayuwa har zuwa shekaru 30-40 a cikin mahalli tare da ingantaccen abinci. 

A lokacin nazarin 2013 na Amblyopsis spelaea, masana kimiyya sun gano cewa an raba nau'in jinsin zuwa nau'i biyu na juyin halitta: daya arewacin kogin Ohio, a Indiana, da kuma kudancin kogi, a Kentucky . Al'ummar kudancin sun riƙe sunan A. spelaea kuma an sake sanya arewa suna Amblyopsis hoosieri a cikin takarda na 2014 da aka buga a cikin mujallar ZooKeys .   Ba a samun kowane nau'in a arewacin kogin White, yana gudana gabas zuwa yamma kudu da Bedford, Indiana .

An yi la'akari da kifin arewacin kogin don jeri a ƙarƙashin Dokar Kare Haruffa, duk da haka, Ma'aikatar Kifi da Namun daji ta Amurka ta gano a cikin 2023 cewa duk da asarar metapopulations guda biyu na A. spelaea, jeri ba a ba da garanti ba, kamar yadda metapopulations huɗun da har yanzu ke wanzu suna da isassun ƙarancin yawan jama'a don rage barazanar.  An raba yawan jama'a tsakanin raka'a biyu waɗanda Yankin Fault na Rough Creek ya raba. Barazana ga nau'in sun hada da gurbacewar muhalli, musamman ta hanyar gurbatar ruwan karkashin kasa daga mamaye ayyukan noma, birane da masana'antu, asarar gandun daji da kuma gurbacewar ruwa.

 Manazarta