Sea urchins - Denizens na Deep

A cikin zurfin teku tare da Oceanic, gwargwado rayuwa mai ban mamaki dabbobi - teku urchins. Wannan rarrafe arthropod nasa ne a aji na echinoderms. Bushiya jiki yana da kananan (3-30 cm), ya rufe tare da calcareous harsashi faranti to wanda suna da alaka daban-daban tare da tsawon da allura. Su zama dole domin motsi na dabba. Idanu suna located in da babba jiki.

A yanayi, akwai teku urchins mafi bambancin Paint: ja, da fari, baki, kore, blue, da launin ruwan kasa, da shunayya, da launin toka. Wasu tsuntsaye canza launi dangane da yanayi amo. A total number of fil, bayar da tsotsa kofuna da kuma located a ko'ina cikin jiki, na iya zama fiye da dubu. Sun iya budewa da kuma kwangila, don haka cewa dabba iya ja jiki daga wuri zuwa wuri, kazalika da kewaya ta cikin cliffs. Bakinka, ya tsaurara taushi fata, aka hada da biyar nau'i-nau'i daga taso daukan taban faranti, da gefuna da suke waje gills. Sea urchins da musamman gabobin da ma'auni - sferidii. Suna located a kusa da bakinsa. Sea urchin yana da musamman prehensile gabobin - pedicellariae located daga cikin needles. Aka azurta su da guba ruwa shugaban samar da musamman gland. Animal guba ne sosai guba. Tare da shi bushiya yaƙi da abokan gābansu. Duk da haka, wannan ba kawai aikin pedicellariae - godiya zuwa gare su, bushiya wanke jikinka na sharar gida da kuma daban-daban contaminants, da kuma na kama da ganima, da kuma watsa shi a cikin bakinka.

Arthropod rayuwa a zurfin har zuwa goma mita, yafi kusa murjani reefs da kuma ga ~ ar ruwan. Duk da samuwar hanyoyi da dama don kare (da allura pedicellariae, makamai), da dabbobi sau da yawa fada ganima ga ya fi girma dabbobi, kamar teku kaguwa, kifi, Shellfish, marine dabbobi masu shayarwa da tsuntsaye.

Haifa mutane fara bayan shekara ta uku ta rayuwa. Jam sel a arthropod dake kusa da dubura. Jinsi teku urchins iya zama shekara zagaye. Duk da haka, mafi yawan ma'abota kakar auku a cikin dumi lokaci na shekara. Tun da wadannan na cikin ruwa dabbobi ne iri guda ba, kiwo hedgehogs ne kamar haka: mace lays ta qwai a cikin kududdufi ruwa, sa'an nan maza takin shi. Miliyoyin namiji jam sel da testicular jefarwa da marine arthropod, 'yan sa'o'i juya cikin kankanin beads rufi da bakin ciki zaruruwa. Godiya zuwa ga vibration, da qwai ne iya juya da kuma matsawa a duk inda. Bayan wani lokaci larvae an modified: mĩƙe ta, ya kafa wani bakin ciki sosai calcareous kwarangwal da hudu dogon tsari. Tun wannan lokacin, da qwai rasa tsoffin buoyancy, kuma daukawa su kan a daban-daban kwatance. A lokacin da cikin ɓata da metamorphosis faruwa. A tushe na matakai da pleutusah aka kafa da kuma tasowa kankanin teku urchin. A wannan lokacin, da tsutsa saukad da zuwa kasan ko wasu surface, populating sabon sarari. Bayyana da farko a ziyarar da tabbaci a haɗe zuwa duwatsu, da kuma dabbobi fara rayayye girma.

A jihar bakin teku kasashen na teku urchin ne mai manufa jinsunan. A Rum kasashe musamman yaba abinci daga dabbobi maniyyi da kuma qwai. Duk da haka, wannan shi ne wani arthropod ya ga mutum a wasu hadari. Yin iyo a cikin tẽku, da kuma, da gangan tako a kan wani bushiya, zai iya sa tsanani lalacewar da ƙafa. Sokin adam fata, da needles sau da yawa karya, da barin jikin m tips. Kamar wancan akwai ciwo mai tsanani zaunanniya sa'o'i da dama. A dafin wasu wakilan irin wannan ne sosai guba.

Duk da haka, da undeniable amfanin da tẽku urchins. Suna da aka sani da orderlies na cikin tẽku mai zurfi, godiya ta zuwa ga ikon sha carbon dioxide, Munã rage ta adadin a cikin yanayi. A cikunna daga cikin dabba amfani a cikin Pharmaceutical masana'antu don ƙirƙirar kwayoyi.