Ilimin abinci na kifin Nilu

Ilimin abinci na kifin Nilu

Yankunan Nilu sune Masu cin nama a duk faɗin su. A cikin ruwa, wannan nau'in mai farauta ne mai saurin gudu wanda ke dogaro da motsi da na'urori masu auna matsin lamba don kama duk wani ganima da ke gabatar da kansa a ciki ko kusa da bakin teku. Daga cikin ruwa, duk da haka, giwayen Nilu na iya dogaro da gaɓoɓinsa kawai, yayin da yake tsere a kan ƙasa mai ƙarfi, don bin ganima. Ko ta yaya suke kai farmaki ga ganima, wannan da sauran crocodilians suna ɗaukar kusan duk abincin su ta hanyar kwanto, suna buƙatar kama ganimarsu a cikin ɗan gajeren lokaci don cin nasara. Suna da metabolism na ectothermic, don haka zasu iya rayuwa na dogon lokaci tsakanin abinci - kodayake lokacin da suka ci, zasu iya cin rabin nauyin jikinsu a lokaci guda. Koyaya, ga irin waɗannan manyan dabbobi, ciki suna da ɗan ƙarami, ba su da girma fiye da Kwando a cikin matsakaicin girman babba, don haka a matsayin doka, duk abin da ba masu cin abinci ba ne. giwaye suna ciyarwa sosai fiye da dattawan su bisa ga binciken da aka yi a Uganda da Zambia. Gabaɗaya, a mafi ƙanƙanta (0.3-1 in - 3 in)), Yankunan Nilu suna iya samun cikakken ciki (17.4% cikakke a kowace Cott); manya a 3-4 in - 1 1 in) a tsawon suna iya samun ciki mara amfani (20.2%). mafi girman girman girman da Cott ya yi nazari, 4-5 m (13 in - 16 ft 5 in), su ne na biyu mafi kusantar ko dai suna da cikakken ciki (10%) ko ciki mara amfani (20%). Sauran binciken sun kuma nuna adadi mai yawa na tsofaffin aladu na Nilu tare da ciki mara amfani. Misali, a Tafkin Turkana, Kenya, 48.4% na crocodiles suna da ciki mara amfani. Ciki na mata masu shayarwa koyaushe babu komai, ma'ana suna iya rayuwa watanni da yawa ba tare da abinci ba.