Fatalwar fatalwa (Ocypode quadrata) ta kasance cikin ajin crustacean.
Kaguwa yaduwa fatalwa ne.
Gidan mazaunin kaguwa na fatalwa yana cikin kewayon daga 40 ° C. sh har zuwa digiri 30, kuma ya hada da gabar gabas ta Kudu da Arewacin Amurka.
Yankin ya kara daga Tsibirin Santa Catarina a Brazil. Wannan nau'in kaguwa kuma yana zaune a yankin Bermuda, an sami larvae a can arewa kusa da Woods Hole a Massachusetts, amma ba a sami manya a wannan latitude ba.
Mazaunan kaguwa fatalwa ne.
Fatalwar fatalwa ana samun ta ne a yankuna masu zafi da kuma yanayin zafi. Ana samun su a wuraren da ke da rairayin bakin teku masu kariya. Suna zaune ne a cikin yankin na yanki mai kyau (yanki na layin bazara), suna zaune rairayin bakin teku masu yashi kusa da ruwa.
Alamomin waje na kaguwa fatalwa ce.
Kaguwa mai fatalwa ƙaramin ɓawon burodi ne mai kwalliya mai kauri kimanin tsawon cm 5. Launin mahaɗin shine ko bambaro-rawaya ko fari-fatsi-fatsi. Karafunan yana da murabba'i huɗu, an zagaye shi a gefuna. Tsawon karapace ya kai kusan biyar da shida na fadinsa. Akwai babban burushin gashi a saman gaban ƙafafun kafa na farko. Ana samun daidaitattun ƙafafu (ƙafafu) a gabobin da aka daidaita don dogon tafiya. Idanuwa sunyi kwalla. Namiji ya fi na mace girma.
Kiwon kaguwa - fatalwowi.
Sake haifuwa a cikin kaguwar fatalwa na faruwa a duk shekara, galibi a cikin watan Afrilu - Yuli, za su iya yin aure a kowane lokaci bayan balaga. Wannan fasalin shine karbuwa ga tsarin rayuwar duniya. Maimaitawa yana faruwa a lokacin da murfin murfin yake taushi gaba ɗaya ya zama mai tauri. Yawancin lokaci fatalwowi fatalwa suna haduwa a ko'ina ko kusa da kabarin namiji.
Mata na iya haifuwa lokacin da baƙotansu ya wuce 2.5 cm.
Carapace na maza a cikin ƙuraje masu balaga na jima'i 2.4 cm Yawancin lokaci kaguwa - fatalwowi suna ba da zuriya tun suna kimanin shekara guda.
Mace tana dauke da kwai a karkashin jikinta, a lokacin da take cikin ciki, kullum tana shiga cikin ruwa domin kwayayen su kasance masu danshi kuma kada su bushe. Wasu matan ma suna birgima a cikin ruwa don ƙara samun ruwa da iskar oxygen. A dabi'a, fatalwowin fatalwa suna rayuwa kusan shekaru 3.
Fasali na halayyar fatalwar fatalwa.
Kaguje - fatalwowi galibi babu dare. Masassarar Crustaceans suna gina sabbin burbushin ko kuma gyara tsofaffin da safe. A farkon rana, suna zaune a cikin kabarinsu suna ɓoyewa a can har faɗuwar rana. Burrows suna da tsayin mita 0.6 zuwa 1.2 kuma kusan faɗi ɗaya. Girman ƙofar ya yi daidai da girman karapace. Matasa, ƙananan kaguyoyi sukan yi burrow kusa da ruwa. Yayin da ake ciyarwa da daddare, kaguwa na iya yin tafiyar mita 300, don haka ba sa komawa kangon da ke daidai kowace rana. Fatalwar fatalwa ta ɓoye a cikin kabarinsu daga Oktoba zuwa Afrilu. Wannan nau'in crustacean yana da fasali mai dacewa na rayuwa akan ƙasa.
Kaguje - fatalwowi lokaci-lokaci suna rugawa zuwa ruwa don jika gulbinsu, suna cire oxygen ne kawai lokacin da suke jike. Amma kuma suna iya jan ruwa daga kasa. Fatalwar fatalwa suna amfani da gashin gashi masu kyau waɗanda suke a ƙasan gabobinsu don watsa ruwa daga yashi zuwa rami.
Fatalwowi fatalwowi sun shiga cikin yashi mai dausayi a yankin bakin teku mai tsawon mita 400.
Fatalwowin fatalwa suna yin sautin da ke faruwa yayin da ƙusoshin ƙafafu ke goga ƙasa. Wannan lamarin ana kiransa stridulation (shafawa) kuma ana jin “sautukan gurguntarwa”. Wannan shine yadda maza ke gargadin kasancewar su don kawar da buƙatar saduwa da jiki tare da mai gasa.
Kaguwa abinci fatalwa ne.
Kadoji - fatalwowi sune masu farauta da kuma yan sara, suna ciyar da dare kawai. Abincin ganima ya dogara da nau'in rairayin bakin teku wanda waɗannan ɓawon burodi ke rayuwa a ciki. Kadojin da ke gabar teku sun kasance suna cin abinci ne a kan kifin Donax bivalve da kifayen yashi na Atlantika, yayin da a kusa da bakin rairayin bakin teku suke ciyar da kwayaye da 'ya'yan kwari na kunkuru.
Fatalwar fatalwa tana farauta galibi cikin dare don rage haɗarin cinyewa daga maɓuɓɓugan ruwa, kogin teku ko raccoons. Lokacin da suka bar burbushinsu da rana, suna iya canza launin kalar murfin ɗan kaɗan daidai da launin yashi kewaye.
Rawar yanayin halittar kaguwa fatalwa ce.
Kadoji - fatalwowi a cikin tsarin halittun su masu farauta ne kuma suna cikin jerin kayan abinci.
Yawancin abincin waɗannan ɓawon burodi na rayayyun halittu ne, kodayake suma suna cikin masu zaba (na zaɓaɓɓu).
Fatalwar fatalwa wani muhimmin ɓangare ne na sarkar abinci, suna taka muhimmiyar rawa wajen sauya kuzari daga ƙwayoyin cuta da ƙananan invertebrates zuwa manyan dabbobi masu cin nama.
Wannan nau'in crustacean yana da mummunan tasiri akan yawan kunkuru. Ana kokarin kayyade cin kwai kunkuru da kaguwa.
Bincike ya nuna cewa fatalwar fatalwa tana cinye kashi 10% na kwai na kunkuru idan suka yi farauta, kuma suna kashe soyayyen kifin. A wasu lokuta, sukan lalata burbushin da jawo hankalin beran da ke farautar kaguwa.
Kaguwa - fatalwa - mai nuna yanayin muhallin.
Ana amfani da kaguwar fatalwa a matsayin alamomi don tantance tasirin ayyukan ɗan adam a rairayin bakin teku masu yashi. Za'a iya ƙididdige yawan jama'ar ɓawon burodi ta hanyar ƙidaya adadin ramuka da aka tono a cikin yashi a wani wuri. Girman matsuguni koyaushe yana raguwa saboda sauye-sauyen muhalli da ƙuntata ƙasa sakamakon ayyukan ɗan adam. Sabili da haka, sa ido kan yawan kaguwa na fatalwa zai taimaka wajen kimanta tasirin ayyukan ɗan adam a cikin yanayin halittar rairayin bakin teku.
Matsayin kiyayewa na kaguwa fatalwa ce.
A halin yanzu, fatalwowin fatalwa ba nau'in haɗari bane. Daya daga cikin manyan dalilan da suka sa aka samu raguwar yawan kadojin shine raguwar mazaunin saboda gina gine-ginen zama ko rukunin masu yawon bude ido a shiyyar da ke sama. Da yawa daga cikin fatattun fatalwowi suna mutuwa a ƙarƙashin ƙafafun motocin da ke kan hanya, abin da ke haifar da rikice-rikice ya rikitar da tsarin ciyarwar dare da kuma yanayin haihuwar crustaceans.
