Mary Allen
Gabatarwa: Hakora akan hanci
Lokacin da muke tunanin haƙoran dabba, muna yawan kwatanta su a cikin baki. Duk da haka, akwai wasu dabbobin da suke da hakora a hancinsu, wanda zai iya zama da wuya a gare mu. Waɗannan gyare-gyaren suna da ban sha'awa kuma na musamman, kuma suna yin ayyuka masu mahimmanci a cikin mulkin dabba.
The Narwhal: Narwhal mai haƙori na musamman
Narwhal watakila ita ce sanannen dabba mai hakora a hanci. Wannan kifi mai haƙori yana zaune a cikin ruwan Arctic na Kanada, Greenland, Norway, da Rasha. Narwhals na maza suna da dogon haƙori mai karkace wanda zai iya girma har ƙafa 10 tsayi, yayin da mata ke da guntu, haƙori madaidaiciya. Amma menene aka yi haron, kuma me yasa narwhals suke da shi?
Hancin Narwhal: Ivory ko hakori?
Duk da sunansa, haƙorin narwhal ba ƙaho ba ne, haƙori ne. An yi shi da hauren giwa, wanda wani nau'in abu ne mai wuya, mai yawa, da fari da ake samu a hakora da hakora na wasu dabbobi masu shayarwa. Harin yana tsiro ne daga muƙamuƙin narwhal na sama, kuma haƙiƙa haƙori ne wanda aka gyara wanda zai iya fitowa ta leɓe. Amma me yasa narwhals ke da wannan haƙori na musamman?
Hancin Narwhal: Ana amfani da shi don farauta ko sadarwa?
Da dadewa masana kimiyya sun yi imanin cewa farautar narwhal ana amfani da ita ne wajen farauta, domin ana iya amfani da ita wajen yi wa kifin tsiya ko kuma ta fasa kankara. Duk da haka, bincike na baya-bayan nan ya nuna cewa ana iya amfani da haron don sadarwa da zamantakewa. Narwhals na maza masu tsayin tsayi sun fi rinjaye kuma suna iya amfani da su don nuna matsayinsu ga wasu maza ko jawo hankalin mata a lokacin jima'i.
Har yaushe ne harin Narwhal zai girma?
Tsuntsaye na Narwhal na iya girma zuwa tsayin ƙafa 10, amma yawancin maza suna da hatsuran da ke kusa da ƙafa 6-9. Mata suna da guntun hatso masu tsayi waɗanda yawanci tsayin ƙafa shida ne. Harin na girma a duk tsawon rayuwar narwhal, kuma yana iya haɓaka siffa ta karkace yayin da yake girma.
Sauran dabbobi masu hakora a fuskarsu
Yayin da narwhal watakila shine sanannen dabba mai hakora a kan hancinsa, akwai wasu dabbobi da dama da ke da wannan nau'i na musamman. Bari mu kalli kadan daga cikinsu.
Tauraro-Hancin Hanci: Hanci mai tanti 22
Tauraro mai hancin tauraro ƙarami ce mai shayarwa da ke zaune a cikin dausayi da dazuzzuka a Arewacin Amurka. An rufe hancinsa a cikin tanti guda 22 na nama, kowannensu yana da dubunnan masu karɓan azanci waɗanda ke iya gano taɓawa, zafin jiki, da sinadarai. Tauraro mai hancin tauraro yana amfani da hancinsa don ganowa da gano ganima a cikin duhu, ruwa mai duhu inda yake zaune.
Gwargwadon Giwa: Dogon hanci, hakora masu kaifi
Tsabar giwa karama ce mai shayarwa mai cin kwari da ke zaune a Afirka. Yana da dogon hanci mai sassauƙa, wanda yake amfani da shi don bincikar abinci a cikin ƙasa da zuriyar ganye. Har ila yau, hancin giwa yana sanye da hakora masu kaifin baki, wanda yake amfani da su wajen kamawa da kashe ganimarsa.
The Snipe Eel: Haƙori mai haƙori don farautar zurfin teku
Snipe eel kifi ne mai zurfin teku wanda ke zaune a yankin tekun abyssal. Yana da doguwar jiki siriri siriri da hanci wanda aka lika masa hakora masu kaifi. Snipe eel yana amfani da hancinsa mai haƙori don kama ƙananan kifaye kuma yana juya baya a cikin duhu, ruwan sanyi inda yake zaune.
Barewa mai Haƙori Saber: Dabbar da ta riga ta kasance da haƙoran hanci
Barewa-hakorin saber wani nau'in barewa ne wanda ya rayu a zamanin Pleistocene. Yana da dogayen haƙoran canine masu lanƙwasa waɗanda suke fitowa daga muƙarƙashinsa na sama, suna ba da kamanni mai haƙori. Duk da haka, yana da ƙananan hakora waɗanda ke kan hancinsa, waɗanda za a iya amfani da su don nunawa ko fada.
Me yasa wasu dabbobi ke da hakora a hanci?
Hakora a kan hanci su ne gyare-gyaren da suka samo asali a cikin dabbobi daban-daban saboda dalilai daban-daban. A wasu lokuta, ana iya amfani da su don farauta ko tsaro, yayin da wasu za a iya amfani da su don sadarwa ko zamantakewa. Wasu dabbobi, kamar tauraro mai hanci, suna amfani da haƙoran hanci don ganowa da gano ganima, yayin da wasu kuma, kamar narwhal, suna amfani da su don jawo hankalin abokan aure ko nuna ikonsu.
Ƙarshe: Ƙarfafawa mai ban sha'awa a cikin masarautar dabba
Hakora a kan hanci na iya zama baƙon abu a gare mu, amma misali ɗaya ne kawai na yawancin abubuwan da suka faru a cikin duniyar dabbobi. Tun daga haƙorin narwhal zuwa hakora masu kaifi na giwa, waɗannan gyare-gyaren suna ba da mahimman dalilai a rayuwar dabba da haifuwa. Ta hanyar nazarin waɗannan sifofi na musamman, za mu iya samun kyakkyawar fahimta game da yadda dabbobi suka dace da muhallinsu na tsawon lokaci.