Barnacles. The upenyu kutenderera, kubereka

Marine acorn barnacles - rudzi nekenza barnacles (suborder barnacles). The vakuru izvi dzemarudzi tiri yakamisirwa upenyu, vakaiisa pachavo kuti dzakaoma hukawanika. Resettlement zvinogoneka chete panguva larval pachikuva. Pari, kuti genus ichi zvinosanganisira 60 marudzi.

mhuka idzi zvomumvura (mufananidzo pazasi) vane calcareous anoshongwa, izvo vasiyana substrate. Kunyura pacharo ine ndiro 6, mana iyo dzinoumba chivharo uye anokwanisa kufamba voga. Crustacean nhema nechepasi weimba, vachiomerera mapazi pakati yakazaruka mahwendefa. Saka zvinoita simba mutinhimira kurova, kuti adzinge mvura mukati mumba nezvimedu zvokudya.

The dhayamita barnacle kunosvika masendimita nomwe uye urefu - 13. makara rinowanzova whitish kana grayish pamwe longitudinal micheka ruvara kana shava.

Barnacle yakafara inotsika dzayo dzakabatanidzwa chero pose - munhu conch of goko, matombo, muti midzi, mirwi piers, kumavambiso zvikepe, uyewo pemhuka dzakasiyana-siyana. Below unogona kuona mapikicha mhuka zvomumvura, izvo zvinogona batanidza chimwe acorn. The namira, iyo rinobudiswa barnacles, yakatsiga zvikuru. It unopikiana kutonhora kusvika 200 madhigirii uye kwete pachena kuti alkalis, acids nezvimwe zvokufembedzwa.

Uyewo, hombe mapapiro barnacles kazhinji kugadzirisa nyoro chipanje, iro Crustacean imba yakavimbika uye hwaro hwakasimba.

Ichitanga gungwa acorn upenyu

Development mugungwa acorn ine zvinotevera matanho: zai, dukutu, crayfish vakura. The mazana zvichiitika kubva mazai kuyangarara vakasununguka uye vari muzvikamu zviviri: nauplius uye Zypries. In inotonhora-mvura mhando larval Danho kunotora 2 mavhiki rokutanga romwedzi, apo dzinopisa - anenge 3-5 mazuva.

Mazana Danho Zypries kudya. Kwechinguva ivo kuyangarara, asi, kamwe mumwaka ezvinhu vari vasiyana substrate. Adult magakanje ndiwo wakaiswa upenyu.

Barnacles ikure ari kumbonyanya nokukurumidza kumhanya. In dzinopisa, dzimwe mhando uchitova 1-2 mavhiki pashure pakugadzirisa kuwana kukura. In kutonhora Sea reBaltic, zvinotora inenge mwedzi mitatu. The rakapedza krill upenyu kubva 1-2 kusvika 5-7 makore kana kupfuura.

Sezvo Anowanza barnacle

Pakati vanhu vagere parutivi, muchinjikwa muchangosangana rinoitwa. Barnacle chinhu hermaphrodite, kureva, mumwe nomumwe ane vanhurume gonads. Pedyo pasi pamberi peya makumbo oviducts azaruka, iro mazai dziri, ipapo kuwira mhango pakati nejasi. Vas efferens dzinoyerera kupinda tubular mukono copulatory nhengo, iyo kana aiwanzopiwa wokushanda anombotwasanudza, yakabudikira chokunze nomumaoko jasi mhango pakati pamberi wacho. Dzinovapa urume fertilizes zai. Studies kunge inoitwa, umo zvakava pachena kuti gungwa acorn anogona bereka oga. Mushure fertilization, mapoka zai iri jasi mhango ndiro zvinobatana oviparous uye kutanga unorema.

Cold-akaumba mazai nomumwe muzhizha, isa fotereza navo yechando kuti muzvinzwe yacho mazana kunze. Heat-rudo vanhu rose gore mazai kanoverengeka.