Polychaete Makonye: tsananguro pfupi boka

Polychaete Makonye dziri nezvenzvimbo kupfuura boka zvomumvura zvipenyu. Vakawanda vamiririri veboka mhenyu iri pasi pegungwa muviri mvura, uye zvikuru kashoma kurarama planktonic nzira youpenyu.

Polychaete Makonye: chivakwa muviri

Mumiririri womuviri uyu mukirasi inoumbwa musoro dhipatimendi, muviri refu uye yakananga nekunobuda netsvina akafukidza. Kazhinji, muviri mhuka inokamukana pachena zvikamu zvakawanda, chimwe nechimwe wanamatira parapodium.

Parapodia vanomiririra hapana chimwe kupfuura chinyakare kumugumo aine ndebvu diki uye bristles. Zvinofadza kuti dzimwe nhengo dzeboka parapodium tinoshandurirwa gills.

Kufanana nevamwe nhengo mhando annedil (zvikwevaropa Oligochaeta) kubva rakadaro muviri mhuka zvakaitwa namatebwe-tsandanyama zai. Above honye muviri akafuka mutete unodzivirira cuticle, iro riri pasi chete-rukoko epithelium. Below ganda vari tsandanyama, chine longitudinal uye dzeraundi tsandanyama kuti vane basa rwokufamba kuderedza muviri remhuka.

Polychaete Makonye: dzomunyika mamiriro

Vamiririri mukirasi iyi tine nokururamisira zvakanaka kunyatsobudirira zvomudumbu hurongwa, chine zvikamu zvitatu. Nechemberi ine muromo anovhura munzvimbo nomumukanwa mhango. Zvino chidimbu zvokudya ikasawira tsandanyama pharynx. Panzira, ari pharynx rine shaya simba pamusoro chitin. Dzimwe vanotokwanisa kukwanisa kurimonyanisa kwaiitwa kunze.

Pashure vachikuya zvokudya mumba yegurokuro, iyo anovhura huru mumasero kuti pave mate. munhu Vamiririri shoma chete duku mudumbu. The midgut hwemhuka inoshandiswa kupedza digesting uye Absorção de Água kuti zvinokosha muviri. chikamu The rwemberi ura ndiye anokonzera paumbwe mutsvina yadzo uye horo anovhura pamusoro dorsal chikamu nekunobuda netsvina akafukidza.

Polychaete Makonye vane namahwindo kweropa gadziriro, chine dorsal uye ventral arteries. Panzira, kuti dorsal mudziyo yakakura uye ine contractile basa, saka zvinoshanda sezvinoita mwoyo. Uyezve, arteries makuru zvakabatana ne inonzi annular midziyo kutakura ropa kusvikira kumigumo uye gills.

Respiratoria wemuTesitamende vamiririri mukirasi iyi vasipo. Gas kuchinjirwa miviri vari ganda uye gills izvo vakaronga pamusoro kana parapodia, kana pamberi, musoro wemuviri chikamu.

yavaive hurongwa chinosanganisira metanephridia duku iyo bvisa vasingadiwi metabolic zvibereko coelomic mvura kupinda kwokunze kwezvakatipoteredza. Mumwe chidimbu ane yayo peya excretory nhengo kuti azarure Cherai makomba diki - nefroporami.

Sezvo tsinga, chinosanganisira chaiwo peripharyngeal mhete, izvo ngaubve ventral tsinga netambo. Zvinofadza kuti zvinenge nhengo dzose dzeboka iri vane zvikuru dzakabudirira nhengo havambozivi uye kunhuwidza. Mune dzimwe mhando, pane maziso.

Polychaete Makonye: dzokubereka nadzo uye kubereka

Nokuti kutanga zvinokosha kuziva kuti zvinenge zvose mhando boka iri vanokwanisa asexual kubereka, izvo kazhinji kacho chinomirirwa kusabatana muviri, kashoma nokuda yotunga.

Kunyange zvakadaro, mhuka dzine tsime kunyatsobudirira dzokubereka nadzo. Pamuviri chete dioecious nehonye. Gonads vari akaumba pamusoro pamadziro yechipiri muviri mhango. Kusunungurwa utachiona masero anogona kuitwa kuburikidza zvinyama pakakoromoka - iyi nyaya vakura munhu afa. Vamwe vamiririri vane dzakananga mawindo kuburikidza iyo dzinounzwa uye gametes. Muchangosangana kunoitika nenzira aqueous svikiro. Kubva zygote nezvechinhu chimwe dukutu, sezviri pachena unenge usisina kutombofanana mukuru. Saizvozvowo, kukura vechidiki honye kunoitika pamwe metamorphosis.