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Barnacles. Lub neej voj voog, tu tub tu kiv

Tubrog nkoj noob txiv qhib Barnacles - ib yam ntawm cov mob qog nqaij hlav Barnacles (suborder Barnacles). Cov laus ntawm no tsiaj yog ib tug taag lub neej, attaching lawv tus kheej rau cov txee. Resettlement yog tau tsuas yog nyob rau hauv lub larval theem. Tam sim no, no genus muaj xws li 60 hom.

Cov marine tsiaj (yees duab hauv qab no) muaj calcareous zoo li, uas yog txuas mus rau lub substrate. Tog nws tus kheej muaj daim hlau 6, plaub uas tsim ib tug hau thiab muaj lub peev xwm yuav tawm mus sib nrug. Crustacean lus dag nyob rau hauv qab ntawm lub tsev, so nqua ntawm qhib daim hlau. Yog li nws ua rau si nyhav zoo ntaus ntawm, nyob rau hauv thiaj li yuav tsav cov dej hauv lub tsev nrog cov khoom noj seem.

Cov kab uas hla barnacle nce mus txog xya centimeters thiab ib tug ntev - 13. Coloring yog feem ntau whitish los yog grayish nrog longitudinal ib daim hlab ntawm ntshav los yog xim av.

Barnacle nws sab qab xib taws uas txuas mus rau tej qhov chaw - ib tug conch plhaub, pob zeb, tsob ntoo keeb kwm, piles ntawm Piers, lub bottoms ntawm ships, raws li zoo raws li mus rau ib tug ntau yam ntawm cov tsiaj. Hauv qab no koj yuav pom cov duab ntawm marine tsiaj, uas muaj peev xwm muab ib tug noob txiv qhib. Cov nplaum, uas yog ua Barnacles, ruaj khov heev. Nws tiv kub txog li 200 degrees thiab tsis raug alkalis, acids thiab lwm yam kuab tshuaj.

Nyob rau hauv lem, loj tis Barnacles feem ntau khom mos daim ntaub, rau cov uas qhov crustacean tsev yog ib txhim khu kev qha thiab khoom foundation.

Lub neej voj voog ntawm lub hiav txwv noob txiv qhib

Kev loj hlob ntawm lub hiav txwv noob txiv qhib muaj cov nram qab theem: qe, larva, neeg laus Crayfish. Cov kab tawm los ntawm lub qe ntab dawb do thiab yog ob ua sawv: nauplius thiab Zypries. Nyob rau hauv dej txias hom larval theem kav los ntawm 2 lub lis piam ua ntej thawj hnub ntawm lub hlis, thaum teb chaws sov - txog 3-5 hnub.

Tus menyuam kab yuav ntev Zypries tsis tau noj. Rau ib txhia lub sij hawm lawv ntab, tab sis, ib zaug nyob rau hauv dej siab tej yam kev mob uas txuas mus rau lub substrate. Adult crabs yog ib tug tsau lub neej.

Barnacles loj hlob thiab kev loj hlob ntawm ib tug ncaj sai pace. Nyob rau hauv lub tropics, ib co hom twb 1-2 lub lis piam tom qab hauv ncav tsis cuag kom loj hlob. Nyob rau hauv thaum Baltic hiav txwv, nws yuav siv sij hawm txog peb lub hlis. Lub neej luv ntawm krill yog los ntawm 1-2 mus 5-7 xyoo los yog ntau tshaj.

Raws li multiplies barnacle

Ntawm cov tib neeg zaum ntawm ib sab, tus ntoo khaub lig-fertilization yog nqa tawm. Barnacle yog ib tug hermaphrodite, uas yog, txhua txhia tus muaj cov txiv neej thiab poj niam gonads. Ze ntawm lub qab ntawm lub hauv pem hauv ntej khub ntawm ob txhais ceg oviducts yog qhib, los ntawm uas lub qe nyob, ces poob mus rau cov kab noj hniav ntawm tus mantle. Vas efferens ntws mus rau hauv lub tubular txiv neej copulatory hloov khoom nruab nrog, uas thaum paired straightened, protruding sab nraud thiab mus rau hauv lub mantle kab noj hniav ntawm pem hauv ntej ntawm tus neeg. Muab lawv nrog cov phev fertilizes lub qe. Kev tshawb fawb tau tau ua, thaum lub sij hawm uas nws los ua tseeb hais tias cov hiav txwv noob txiv qhib yuav muaj me tub ib leeg. Tom qab fertilization, lub qe pawg nyob rau hauv lub mantle kab noj hniav phaj muab oviparous thiab pib crushing.

Khaub thuas-tsim ib tug neeg qe nyob rau hauv lub caij ntuj sov, fertilize lawv nyob rau hauv lub caij ntuj no dhia lub kab tawm. Thaum tshav kub kub-hlub cov neeg thoob plaws hauv lub xyoo nteg qe ob peb lub sij hawm.

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