Mandible - ib tug lub puab tsaig kab?

Mandible - ib tug lub puab tsaig arthropods. Qhov no muaj lub qhov ncauj ntawm ib khub tib yam hais. Feem ntau ntawm cov kab, raws li zoo raws li nyob rau hauv millipedes thiab crustaceans mandible tshwm sim kev sib tsoo khoom noj khoom haus. Txawm li cas los, nyob rau hauv kev sib raug zoo kab, muaj lwm feature ntawm no lub caij - lub tsev zes.

keeb kwm

Mandible - nws yog tib yam li cov mandibles. Nws yog ib qho extremity lub taub hau feem uas thaum lub sij hawm lub evolution ntawm ho hloov. Muaj yog ib qho assumption tias nws yog hloov koksopodity thiab endite. Ib zaug nws yog lawv nruab nrog ancient crustaceans.

Mandibles yog khoom coated feem ntawm lub sclera, uas txhuam thiab ntau yam tine. Nws nkawd hais tias lawv yog qab lub Upper di ncauj.

Tag nrho cov neeg sawv cev muaj entognatha feature mandible qauv. Lawv txuas tsuas yog nyob rau ib tug taw tes rau taub hau. Boca lawv qhov ncauj nti fused mus rau lub sab di ncauj (ib sab ib feem ntawm nws). Raws li, qhov twb raug tsim. Nyob rau hauv lawv thiab muab tso rau lub puab tsaig: ob sab sauv thiab sab. Nws yog vim hais tias ntawm no feature, tag nrho cov chav kawm ntawv hu ua "entognatha".

Nyob rau hauv winged kab thiab schetinohvostok, sib nrug los ntawm no sab ntawm lub articulation point, yog ib tug ntau. Vim li no lawv muaj ib lub caij nyoog rau ua haib thiab kaw breeders zog mandibles.

Tag nrho cov kab uas muaj mandibles, los ntawm lawv cov qhov chaw ntawm articulation nrog lub taub hau ncaim txog leeg. Nws yog tsim nyog rau lub Symptoms ntawm nqaij uas tswj cov mandibles.

haumxeeb nta

Mandible kab tej zaum yuav txawv nyob ntawm seb lub hom ncauj. Raws li, nws tseem tau mus pom cov mandibles yog heev ntau haiv neeg nyob rau hauv muaj nuj nqi, zoo thiab txawm me me.

Yog li ntawd, Coleoptera, Hymenoptera thiab Orthoptera loj heev mandibles. Tom qab tag nrho, lawv yog cov tsim nyog nyob rau hauv thiaj li yuav zuaj, tsim kua muag thiab tuav khoom noj khoom haus.

Nyob rau hauv lub yoov, piv txwv li, lub hom licking ncauj. Yog li ntawd mandibles lawv tsuas txo. Ib tug muv yus yaim-gnawing embodiment ncauj. Raws li, lawv mandibles, tab sis yog muaj, tab sis zoo heev txo, Ntxiv, lawv tau poob jaggedness.

Zhukov

Qhov loj tshaj mandibles los ntawm Coleoptera, li ntawd, nyob rau stag kab mandible - ib tug tseem ceeb horn ntxiv thiab ntau branched. Peb kab woodcutter cov incredibly muaj zog lub puab tsaig. Nyob rau hauv ntau txoj kev, zoo thiab kev loj hlob ntawm mandible yog nyob ntawm hom ntawm pub specialization nyob rau hauv ib tug kab laum.

Thaum av kab, piv txwv li, lub sab sauv lub puab tsaig ntev. Nrog lawv pab, koj yuav tau yooj yim mus tau txoj cai tawm hauv lub qwj plhaub.

Muv, ntsaum thiab nkawj

Rau cov mandible Hymenoptera - nws zhvatelnye mandibles, uas zoo li txheej thaum ub hom lawv. Lawv siv lawv rau:

• Tua prey.
• Khawb burrows.
• txiav cov nroj tsuag.
• Tsim ib tug socket.
• Tuav ntawm nws cov khoom noj khoom haus.

Nyob rau hauv cov ntaub ntawv no, lub qis lub puab tsaig muaj ib tug licking hom thiab tsim los sau nectar.

Nyob rau hauv Diptera thiab Lepidoptera

Nyob rau hauv Diptera mandibles ho hloov. Yog li, nyob rau hauv ib co yoov tshaj cum thiab yoov uas nqus ntshav, mandibles yog stilettos. Nrog lawv pab, cov tshuaj tua kab pierces lub daim tawv nqaij. Tab sis housefly thiab ua poob lawm nws lub puab tsaig. Tom qab nws ncauj yuav tsum tau tsuas rau noj kua zaub mov.

Tag nrho cov kab lia ntawm Lepidoptera yog mandibles, uas muaj lub gnawing hom. Txawm li cas los, tsuas yog toothed npauj khaws lawv mus rau hauv adulthood. Muaj ntau butterflies mandibles poob. Nws puv mus rau hauv ib tug me me nqus proboscis los nqus cov qab zib nectar.

Mandible - ib tug lub puab tsaig los ntawm kab, uas yog nyob rau ntawm sab saum toj. Tag nrho cov mandibles yog sib txawv, nyob ntawm seb lawv lo lus uas peb.