Mary Allen
Nemiviri yavo yakati sandarara, mwaranzi haikanganisi. Vanoyangarara zvakanaka nemumvura. Vanozviviga vamene mugungwa kuti varare kana kuti kuvandira mhuka dzavo.
unhu
Mwaranzi yakaita sei?
Mwaranzi ihove dzechinyakare uye, semashaki, ndeemhuri yehove dzecartilaginous. Havana mapfupa akasimba, shwashwa chete. Izvi zvinoita kuti miviri yavo ireruke uye havadi dundira sedzimwe hove. Muviri wavo wakadzikama, panogara pectoral fins senge ahem, wakajairwa. Muromo, mhino, uye peya shanu dzemagonyera ari pasi pemuviri.
Vane zvakare anonzi maburi ekupfapfaidza kudivi repamusoro pemiviri yavo, kuburikidza nekuyamwa mumvura yavanofema uye kunanga kune magill avo. Vanogara kuseri kwemaziso. Mamwe maburi ekupfapfaidza akakosha nekuti mwaranzi inogara pedyo nepasi pegungwa uye kazhinji inocherera pasi. Vaifema madhaka netsvina nemumagaro avo.
Nechepasi pemuviri kazhinji pane chiedza. Rutivi rwepamusoro rwakagadziridzwa kune hugaro hwemwaranzi, inogona kuva jecha-ruvara, asiwo inenge yakasviba. Mukuwedzera, rutivi rwepamusoro runofananidzwa kuitira kuti miranzi inyatsogadziriswa kune pasi pevhu yavanogara. Ganda remwaranzi rinonzwa rakakwasharara nekuda kwetuyero tudiki pariri.
Iwo anonzi placoid zviyero uye anoumbwa nedentin uye enamel, zvakanyanya semazino. Mwaranzi midiki inoyera masendimita makumi matatu chete mudhayamita, iyo mikuru yakaita semwaranzi yedhiyabhorosi kana mwaranzi huru yemanta inosvika pamamita manomwe kureba uye inorema kusvika matani maviri. Mwaranzi ine mitsara yakawanda yemazino mumiromo yawo. Kana zino rikadonha pamberi pemutsetse wemeno, rinotevera rinotora.
Mwaranzi inogara kupi?
Marara anogara mumakungwa ese epasi. Dzinonyanya kuwanikwa munzvimbo dzinodziya uye dzinopisa. Zvisinei, mamwe marudzi anotamirawo kune brackish uye mvura yakachena. Dzimwe mhando dzeSouth America dzakadai sema stingrays dzinogara chete munzizi huru dzeSouth America. Maranzi anogara munzvimbo dzakasiyana-siyana dzakadzika dzegungwa - kubva mumvura isina kudzika kusvika ku 3000 metres kudzika.
Ndeapi marudzi emwaranzi aripo?
Kune anosvika mazana mashanu marudzi emwaranzi pasi rese. Iwo akakamurwa kuita zvidimbu zvakasiyana, semuenzaniso, gitare rays, saw rays, torpedo rays, chaiyo rays, kana gondo mwaranzi.
Kuzvibata
Mwaranzi inorarama sei?
Nemhaka yokuti miviri yavo ine chiedza, mwaranzi inoshambira zvikuru. Mwaranzi wegondo wakawedzera zvimbi zvepectoral uye unofamba mumvura nekufamba kwakanaka zvekuti unofanana negondo riri kubhururuka mumhepo - ndosaka riri zita raro.
Mwaranzi yese yakafanana muchimiro chavo chekutanga, asi pachine misiyano yakajeka pakati perudzi rwega. Mwaranzi yegondo, semuenzaniso, ine mhino yakaita semuromo. Mwaranzi yemagetsi inochajirwa nemagetsi uye inogona kushamisa mhuka dzayo nemagetsi anosvika 220 volts. Vamwe, senge American stingray, vane huturu hunotyisa pamuswe wavo. Magetsi, stingrays, uye stingrays zvinogona kunyange kuva nengozi kuvanhu.
Mwaranzi yegitare inonyanya kutsauka kubva pachimiro chekutanga chemwaranzi: Inotaridzika semwaranzi pamberi, asi zvakanyanya seshaki kumashure. Uye mwaranzi wemarble unotakura nhevedzano yezvimiro zvakaita semazino kumusana waro kuti uzvidzivirire kubva kuzvikara. Mwaranzi ine pfungwa yakanaka yekunhuwidza uye kubata. Uye ivo vane imwe nhengo yekunzwa: iyo Lorenzini ampoules. Zvinoonekwa semaburi madiki pamberi pemusoro.
Mukati meampoules mune gelatinous substance inoshandiswa nemwaranzi kuona mafungiro emagetsi anobva mukufamba kwemhasuru dzemhuka yavo. Ne Lorenzini ampoules, miranzi inogona "kunzwa" mhuka yavo pagungwa uye kuiwana pasina rubatsiro rwemaziso avo - ari kumusoro kwemuviri wavo.
Shamwari nevavengi ray
Mwaranzi inodzivirira zvikuru: vamwe vanozvidzivirira nemagetsi emagetsi, vamwe vane chepfu kana mutsara wemazino akapinza pamusana wavo. Asi dzimwe nguva mwaranzi inotizawo: Vanobva vadzvanya mvura nemumagill avo voshandisa iyi recoil musimboti kupfura nemumvura nekumhanya kwemheni.
Mwaranzi inoberekana sei?
Mwaranzi inokandira mazai akaita se capsule ane chifukidziro chedehwe umo vana vanokura. Goko rinodzivirira pwere asi rinobvumira mvura kuti ipfuure kuitira kuti embryo ive neokisijeni. Kuitira kuti mazai arege kutakurwa nemhepo inoyerera, ane mapeji akakombama ayo mazai anonamira pamatombo kana zvirimwa.
Mune mamwe marudzi, vana vanokura mukati memazai mukati memuviri waamai. Vechidiki vanochochonya ipapo kana nguva pfupi mushure mekutadzika. Nguva yekukura kusvika kuchechenya kunotora - zvichienderana nemhando - mavhiki mana kusvika gumi nemana. Iwo maranzi madiki haatarisirwe naamai vawo asi anotofanira kuzvimiririra pazuva rekutanga.
Care
Mwaranzi inodyei?
Mwaranzi inonyanya kudya mhuka dzisina mutsipa semhungu, magakanje, uye echinoderms, asiwo hove. Zvimwe, kufanana nehofori manta ray, zvinodya plankton, zvisikwa zviduku zvavanosefa mumvura yegungwa nemagill azvo.