Lamprey River - rudzi chinorura-chisvetasimba kuti hwaponeswa kubvira makarekare

Lamprey River ndorwevaya boka cyclostomes hove (Cyclostomata), lampreys subclass (Petromyzones). It anogara nzizi. MuRussia, ane zvokutengeserana ukoshi.

It ane elongated, nyoka-kufanana muviri anenge 40 masendimita refu, akafukidza mucous pachena ganda. Ruvara kwake rima-pfumbu ane esimbi Sheen. Mukanwa prisasyvatelnoy mudura Hopper, kumicheto izvo riri parurimi mazino. Shaya kwete. Pamusoro musoro ane unpaired nasal yokutanga. meso ake akanga vatatu, vaviri zviri anowanzoitwa yakatanga, uye wechitatu anoona chiedza chete, nokuda pasina izvo.

Afemeruke inopiwa nomwe nomwe branchial mumasaga iri kumicheto muviri uye hwomukova chokunze. The marangwanda ine shwashwa. It floats, vaikunga muviri, rinenge senyoka. Two dorsal zvimbi (kashoma rimwe), caudal zenze ravnolopastny, ivo vose anotsigirwa cartilaginous mwaranzi. Aiwanzopiwa wokushanda zvimbi haana rwizi lamprey. Photo zvinoratidza zvayo zvakanaka.

Lamprey River yakakamurwa kupinda the bushing (vanogara mumhenderekedzo yegungwa nzvimbo desalinated gungwa uye kuita kuti pave munzizi) uye musuo rimwe (kurarama nzizi).

Lamprey River - rudzi chinorura uye chisvetasimba. Zvinokonzerwa pedyo kubvisa kune aqueous vomumuzinda zvinoodza hove kuburikidza muchivabvuta nyama neropa. Iye wamakaro, mumwe kubvisa mukombe, izvo zvinogona kutora mazuva mazhinji, anokwanisa kudhonza kubva akuvara zvikuru avo uremu. hove zhinji mushure "nhaurirano" vanofa maronda ake zvakadai, sezvo ropa ravo anowana nenhumbi kuti kunotadzisa pakugwamba.

A gore asati zviri kukonzera lamprey rwizi hunoguma kudya. In muviri wayo pane kuchinja: inoderedza ura, mate shwanu kufa, dorsal zvimbi vari akabatanidza kupinda mumwe, hadzi rinowanika riri mumagaro zenze uye mazai akaumba, uye hono - yokubereka papilla uye mukaka. Length uye uremu mu aroorane kunoderedza.

Inoparadzirwa rwizi lamprey ari zvikamu rwizi ane rinomhanya kuitika uye pebbly pasi, panguva udzamu. Panguva zviri kukonzera, mukono anovaka dendere nokuchera buri pasi. Female dzose nguva kuyangarara pamusoro pake, pamusoro mudumbu musoro wake, sezvo kana sedziri. Pakupedzisira zviri kunokura gomba chete zvishoma. Kana kwapera, hadzi kwakunoitwa pachayo kudombo pedyo dendere, uye hono akasasiya payo, zvishoma nezvishoma displacing kuti kubvisa mukombe kusvikira kurutivi musoro nomuswe Achiputira rakapoteredzwa. Products dzokubereka mumasero vakawisirwa panguva. Mushure zviri kukonzera, vaviri chakavanzika pakati pamatombo uye nokukurumidza afa.

Mazai, inova vanopfuura zviuru 20, 2 weeks mazana ngapaonekwe inonzi peskoroykami. Vanotarisira seguruva Makonye yellowish ruvara. Mazuva anenge 4 vakahwanda pakati pamatombo parwizi pasi, uye yakasvika 6 mm pakureba, akavigwa mumadhaka. Mazuva 15 mazana kusiya nzvimbo yake yokuvanda uende aibuda, kumbomira uchavigwa apo mumadhaka uye kudya algae residues. The larval Danho Rinotora makore anenge 5. Pashure metamorphosis kunoitika mukuru rwakazara, panguva iyo chisvetasimba iri murwizi lamprey dzimwe rwizi vagari.

Izvi cyclostomes hove isakarurama ikasakendenga chiedza. Kubva musi iwoyo waro hove. Vehove kutura kumativi maviri murwizi simba mwenje kuitira kuti yapakati ndima rima, uye akaisa musungo kuti anobata uye anowa.

Panguva iyi, rwizi lamprey ane wakanaka kuravira unhu. Uye paunofunga kuti mapfupa ake bile uye ura kwete, uku ndiko chigadzirwa wakakwana kuti inogona kudyiwa yose. zviri pamberi kubika vakachenesa pamusoro madzihwa uye zvakakanyiwa namafuta nomumakango, dzimwe nguva pickled.