Nemerteans (worm): Description

Nemerteans - worm ụdị teepu-ka. N'ịbụ nke a na udi enweghị mpụga akụkụ nke aka. Otú ọ dị, ọ bụ ike na-enye nri kama mbụ n'ụzọ - "vystrelivaya" na ihe n'ụba nke imi, nke na allocates ogologo proboscis nke na-aga miri n'ime ahu umi.

Gịnị a ụzọ ndụ na-anọchi anya ụmụ anụmanụ? Olee otú nemerteans (worm)? Photos na nkọwa ndị a na-akpụ akpụ ga-atụle mgbe e mesịrị na isiokwu a.

History of chọpụtara nemerteans

N'ihi na oge mbụ na ịdị adị nke nemerteans mụtara ekele na nchoputa nke ọkà mmụta sayensị G. Barleyz. Na 1758, ndị nnyocha chọpụtara irighiri-ụdị yiri na mmiri mmiri, kọwara ya morphological Ọdịdị na ọbụna kere a na foto nke anụmanụ.

Budata gbasaa Encyclopedic ihe ọmụma nke nemerteans na XIX narị afọ. Ọtụtụ zoologists meworo ka ọhụrụ sayensị, na-akpali eziokwu banyere ndị a pụrụ iche ụmụ anụmanụ ibi isi na oké osimiri n'ala. N'ezoghị ọnụ adade ke ubi, e mewo ka o kwere omume ekele ntoputa nke-esi na-arụ ọrụ a omimi. definition nke "nemertean" e mere atụmatụ ya n'oge a na ya onwe ya.

Study nemerteans arụsi Soviet zoologist NA Livanov. Na 1955, o gosipụtara na ụmụ anụmanụ ndị a bụ na mgbanwe alaka n'etiti ewepụghị na rịbọn-dị ka ikpuru. Tupu nke a, ndị ae kere eke họọrọ dị ka ụdị nke annelid ikpuru - annelids.

anya

A na-ahụkarị nnọchiteanya nke nemerteans nwere ahu elongated na anteroposterior direction, dịtụ esisịt dorsal na ventral ngalaba. Ahu ogologo nke onye na-anọchite anya dịgasị iche n'ebe a ole na ole millimeters ka iri puku kwuru iri mita. Otú ọ dị, n'ihe nke ahụ n'ezie uru nemerteans mgbagwoju anya site na eziokwu na ndị ae kere eke na-enwe ike gbatịa ka leeches.

Nemerteans - worm onye ahu a na-ekewa truncal na isi ụlọ ọrụ. The ókè-ala n'etiti ndị a akụkụ ụfọdụ nke cervical uzo. The isi òkè mejupụtara ọnụ nke anụmanụ. Ogwe mpaghara nwere dịghị akpọ mpụga ozu. N'akụkụ nke ahụ na-ekenyela naanị obere gonads. Na azụ akụkụ nke irighiri bụ ọma distinguishable ike.

Skin nemerteans nwere ike na-amị nnukwu ichekwa imi. Ya mere, ọtụtụ n'ime ndị na ikpuru nke ụdị anya-amaghị mma ka anụ. Ọtụtụ oké osimiri nnụnụ nwere a na-egbuke egbuke na agba, nke bụ a ịdọ aka ná ntị nke ihe ize ndụ mgbaàmà pụrụ ịbụ ndị iro ha eke ebe obibi. N'otu oge ahụ e nwere ezu nnọchiteanya nemerteans whitish-aj u. Ụfọdụ n'ime ha na translucent akpụkpọ, site na nke translucent esịtidem akụkụ.

nri

Nemerteans - irighiri, nke nwere elongated ọnụ oghere nke tubular ụdị. Inside na ọ nwere a pụrụ iche mouthparts proboscis, nke akpọrepu miri n'ime ahu oghere na-emi odude ke esịtidem akụkụ, mgbe ụmụ anụmanụ na-ezu ike. N'oge ichu nta, nke a plastic tube worm atụgharịa ẹsịn ke ntụziaka nke aja n'okpuru nduzi nke haịdrọlik nsogbu. Mining kpuchie nrapado, oké na acrid imi.

Ọ na-azụ nemerteans? The worm nwere ike ilo na-eri anụ dum ịnọrọ ma ọ bụ kee ya n'ime akụkụ. Ụfọdụ ụmụ anụmanụ na-anọchi anya ụdị envelop anụ na a akwuru nke imi, na-ahapụ ya prozapas.

esịtidem Ọdịdị

Nemerteans - irighiri, nke adịghị a ahu oghere onwe ya. All na gaps n'etiti esịtidem akụkụ jupụtara connective anụ ahụ - parenchyma. Ime ọkọnọ n'azụ, n'etiti na n'ihu eriri afọ.

Nemertean nwere kasị mepere emepe ọbara usoro n'etiti rịbọn ekara ikpuru. Ma ihe ndị akụkụ okuku ume na usoro, ụmụ anụmanụ ndị a na-adịghị. Oxygen saturation nke mkpụrụ ndụ na-adị site na ya nnata site na akpụkpọ.

The ụjọ usoro na-wuru na ụkpụrụ nke ortogona. Ndị ọzọ okwu - akwara mkpụrụ ndụ na-etolite kpọmkwem emep uta eri, na ndị anakọtara na akwara Kporo.

ọmụmụ

Ịmata ihe dị iche ndị na-esonụ na klas nemerteans:

1. Anopla - na-akpọ ejighi ngwaogu ikpuru. A akụkụ pụrụ iche nke a na klas nke Nigeria bụ enweghị nke proboscis na onu oghere. Food weghaara site mmeghe, na dị n'ógbè nke abdominal uji eze. Bright nnọchiteanya nke a na klas na-eme nnukwu oké osimiri nemerteans akpọ Lineus Longissimus, nke ahụ nwere ike ịbụ ruo 30 mita na a obosara nke bụghị ihe karịrị otu sentimita.
2. Nemerteans irighiri, Enopla klas nwere a proboscis na n'ihu nke ahu. Ikpeazụ chụpụrụ, egbu aja multiple stilettos na wrapping ya oké imi. Òtù a na klas na-akwanyere ya ùgwù na-akasị obi umeala size.

ụzọ ndụ

Kasị nke ikpuru, nke na-nkewa dị ka nemertean bụ mmiri ụmụ anụmanụ na-adị ndụ na ala. Otú ọ dị, anyị maara nnọọ ọtụtụ nke umu freshwater e kere eke nke a na ụdị. E nwekwara onye na-anọchite anya nemerteans ala.

Nemerteans - a irighiri na bụ eri ebi ndụ. Ụfọdụ ụmụ anụmanụ ndị dị otú ahụ dị ka e adịghị achụ nta na ha onwe ha, na ndị scavengers. Makwaara nemerteans, nke na-parasitic na uwe-nwuda oghere nke mmiri mollusks. Ugbu a, e nwere a nkọwa zuru ezu nke iji nke 1 200 ụdị nke ikpuru.