RUDANAFASKAShHO

RUDANAFASKAShHO (Enteropneusta), yak sinfi hayvonhoi bahriro guyand, ki ba tipi nimkhordadorho mansuband. Daroziashon az yakchand sm to 1 m; tanashon kirmshakl buda, az 3 qism iborat ast; khartumcha, gardan va tapa. Dar buni khartum-cha az poyon kovokii dahon joygir shudaast. Dar devorahoi pahlui surkhruda du qator roghoi galsama mavjud ast. Zarrahoi maydai khurok, ki bo ob ba surkhruda vorid meshavand,
bo yorii luobi dahon bo ham mechaspand, minoad muyakhoi dahon onhoro ba ruda, ki bo maqad payvast ast, tela medihand. Dar devorai khartumcha pardai chindore mavjud ast, ki on azoi ikhroji Rudanafaskashho meboshad; mahsuli tajziyai moddaho az roge, ki dar khartumcha voqe ast, judo meshavad. Sistemai asab az du shokha (takhtapusht va shikam) va pechi hujayrai asab, ki dar zeri ektoderma khobidaast, iborat meboshad. Sistemai gardishi khun az du ragi khungard — shikam va takhtapusht tashkil yoftaast. Rudanafaskashho jonvaroni judojinsaand. Gadudhoi jinsiashon (ziyoda az 30 juft) ba darozii ruda joygir Balanogloss (V. clavigerus). buda, majroi onho az pahlui badan kushoda meshavad. Tamomi tukhmi bordorshuda qarib barobar taqsim meshavad. Rudanafaskashho qarib 100 namud doshta, beshtar dar bahrhoi obashon shirgarm pahn shudaand; dar SSSR dar bahrhoi Safed, Barents, Bering va Okhot vomekhurand. Rudanafaskashho dar qari ob zindagi mekunand. Gizoyashon boqimondai jonvaroni mavtshuda va rastaniho meboshand. Dar omuzishi sokht, inkishof va filogeniyai Rudanafaskashho olimoni rus A. O. Kovalevskiy, I. I. Mechnikov va V. M. Shimkevich hissai kalon guzoshtaand. Yake az namoyandahoi mamuli Rudanafaskashho balanogloss meboshad.