Synodontis nigrita

Synodontis nigrita
Conservation status
LC (mul)  (IUCN 3.1)
Scientific classification
Kingdom	Animalia
Phylum	Chordata (mul)
Class	Actinopteri (mul)
Order	Siluriformes (mul)
Dangi	Mochokidae (mul)
Genus	Synodontis (mul)
jinsi	Synodontis nigrita Valenciennes, 1840

Synodontis nigrita, wanda aka fi sani da kifin kifin da ke juyewa ƙasa, nau'in kifin kifin da ke juyewa ƙasa ne wanda ke faruwa a arewacin Afirka . Masanin dabbobin daji na Faransa Achille Valenciennes ne ya fara bayyana shi a shekarar 1840. Nau'in samfurin yana cikin Gidan Tarihi na Ƙasa na Tarihi na Paris.

Bayani

Kamar dukkan membobin halittar Synodontis, S. nigrita yana da ƙashin ƙashi mai ƙarfi wanda ke miƙewa baya har zuwa kashin farko na fin ɗin dorsal. Kan yana ɗauke da wani siffa ta musamman, mai ƙashi, wacce ake kira tsarin humeral. Siffa da girman tsarin humeral suna taimakawa wajen gano nau'in. A cikin S. nigrita, tsarin humeral ya fi tsayi fiye da faɗinsa, tare da tudu a gefen ƙasa, kuma tare da ƙarshen baya mai nuni.

Kifin yana da nau'i uku na barbels . Barbels na maxillary suna kan muƙamuƙi na sama, kuma nau'i biyu na mandibular barbels suna kan muƙamuƙi na ƙasa. Barbel ɗin maxillary yana da tsayi kuma madaidaiciya ba tare da wani reshe ba, tare da faffadan membrane a ƙasa. Yana da tsayin kusan 1 zuwa Tsawon kai sau Tsawon saman mandbular ya ninka tsawon na ciki sau biyu, kuma duka biyun suna da gajerun rassan da ba su da wahala.

Gefunan gaba na fin dorsal da fin dorsal na nau'in Syntontis sun taurare zuwa kashin baya masu tauri. A cikin S. nigrita, kashin baya na fin dorsal yana madaidaiciya ko kuma ɗan lanƙwasa, Tsawon kai 1, santsi a gaba kuma an yi masa serpent a baya. Sauran ɓangaren fin ɗin dorsal ya ƙunshi haskoki bakwai masu rassa. Kashin bayan fin ɗin dorsal yana da girman iri ɗaya da na baya, kuma an yi masa serpent a ɓangarorin biyu. Fin ɗin adipose yana zuwa 3 muddin yana da zurfi. Fifin dubura yana ɗauke da haskoki huɗu marasa rassan da kuma rassa takwas zuwa tara. Wutsiya, ko fin caudal, an yi mata kaifi sosai, tare da saman lobe ya ɗan fi tsayi.

Duk membobin Syndontis suna da tsari da ake kira premaxillary haƙori, wanda yake a gaban babban muƙamuƙin baki. Wannan tsari ya ƙunshi layuka da yawa na gajerun haƙora masu siffar ƙusa. A cikin S. nigrita, haƙorin hakori yana samar da gajeriyar madauri mai faɗi. A ƙasan muƙamuƙi, ko kuma madauri, haƙoran Syndontis an haɗa su da sifofi masu sassauƙa, masu kama da ƙaya kuma an bayyana su da "siffa" ko "ƙugiya". Ana amfani da adadin haƙoran da ke kan madauri don bambance tsakanin nau'ikan; a cikin S. nigrita, akwai haƙora kusan 30 zuwa 35 a kan madauri.

Launin jiki launin ruwan kasa ne ko zaitun zuwa baƙi, tare da ɗigon baƙi masu zagaye. Fifin yana da launin toka-toka zuwa baƙi; fin ɗin caudal yana da ɗigon baƙi ko sandunan giciye baƙi. Ƙananan yara suna da launin ruwan kasa, tare da ɗigon baƙi.

Mazauni da ɗabi'a

A cikin daji, an samo nau'in a ko'ina cikin arewacin Afirka. A tsakiyar Afirka, an rubuta shi a cikin kogin Ubangui da kuma tsakiyar kogin Congo . A gabashin Afirka, ana samunsa a Tafkin Albert da kuma wataƙila a Tafkin Kyoga . A arewacin Afirka, yana yiwuwa yana nan a Masar . A arewa maso gabashin Afirka, yana faruwa a cikin Farin Nil daga Khartoum zuwa tsarin Kogin Jebel da Ghazal, da kuma Kogin Baro . A yammacin Afirka, an san nau'in daga kogin Chad, kogin Niger, Kogin Volta, Kogin Senegal, Kogin Gambia, Kogin Geba, Kogin Oueme, da Kogin Casamance . Ba a san halayen haihuwa na yawancin nau'ikan Synodontis ba, banda wasu lokutan samun ƙwai daga mata masu juna biyu. Haihuwa tana iya faruwa a lokacin ambaliyar ruwa tsakanin Yuli da Oktoba, kuma ma'aurata suna iyo tare yayin haihuwa. Gabaɗaya, nau'in Synodontis suna da ƙwayoyin cuta masu rai, suna cin ƙwari, algae, gastropods, bivalves, soso, crustaceans, da ƙwai na sauran kifaye. Yawan girma yana da sauri a cikin shekara ta farko, sannan yana raguwa yayin da kifin ke tsufa.