Mary Allen
Mvura yakachena stingrays inotyiwa kupfuura piranhas muSouth America: inogona kukonzera kukuvara kunorwadza nerumborera rwadzo!
unhu
Ko stingrays yemvura yakachena inoita sei?
Mvura yakachena stingrays, sezvinoreva zita ravo, ihove dzemvura yakachena. Kufanana nehove, ndedzehove dzinonzi cartilaginous. Idzi ihove dzechinyakare zvikuru dzisina marangwanda akagadzirwa nemapfupa asi anongogadzirwa neshwashwa chete. Mvura yakachena stingrays dzinenge dzakatenderera uye dzakati sandarara muchimiro. Zvichienderana nemhando, muviri wavo une dhayamita ye 25 centimita kusvika kune imwe mita.
The Leopold stingray, somuenzaniso, ane avhareji dhayamita anenge 40 masendimita, vakadzi vanenge 50 masendimita kureba. Kubva pamuromo kusvika kumuromo wemuswe, mvura yakachena stingrays inoyera kusvika 90 centimita. Varume vemvura yakachena stingray vanosiyana kubva kuvakadzi neine appendage kuseri kwebeche, iyo isipo muvakadzi.
Vese varume nehadzi vanotakura muswe kumucheto kwemuviri wavo une calcareous huturu musana ungangoita masendimita matatu kureba unodonha kunze mwedzi mishoma yega yega uye unotsiviwa nemuzongoza mutsva, unokura zvakare. Ganda remvura yakachena stingrays rakanyanyisa uye rinonzwa sejecha. Izvi zvinobva kune zviyero zvidiki paganda, zvinonziwo placoid scales. Semazino, anosanganisira dentini uye enamel.
Mvura yakachena stingrays ine mavara akasiyana. Leopold's stingray ine muviri wemuorivhi-wakasvibira kusvika kune grey-brown kumusoro une makwapa machena, eyero, kana orenji ane miganhu yakasviba.
Zvisinei, mwaranzi wakajeka-ruvara padumbu. Pamusoro pemusoro pane maziso akasimudzwa, anogonawo kudzorerwa. Mvura yakachena stingrays inogona kuona zvakanaka kunyange kana chiedza chikadzima. Izvi zvinodaro nekuti maziso avo, semeso ekatsi, ane anodaidzwa kuti residual light intensifiers. Muromo, mhino, uye maburi emagill ari pasi pemuviri.
Nekudaro, seyakakosha kuchinjika kuhupenyu pasi pemvura uye mumatope, vane imwezve yekuvhura yekufema: Pamusoro pemagill, ivo zvakare vane inonzi inonzi spray gomba kuseri kwemaziso pamusoro pemusoro. kuitira kuti vakwanise kuyamwa mvura inofema isina silt nejecha. Mazino emwaranzi anokura shure kweupenyu hwavo hwose; izvi zvinoreva kuti mazino akasakara anogara achitsiviwa nemamwe matsva.
Ko stingrays yemvura yakachena inogara kupi?
Mvura yakachena stingrays inowanikwa kunzvimbo dzinopisa dzeSouth America. Nekudaro, stingray yaLeopold inongowanikwa muBrazil, semuenzaniso, munzvimbo diki uye zvakare isingawanzo: inongowanikwa mumabheseni enzizi Xingu neFresco. Mvura yakachena stingrays vanogara muhombe dzeSouth America nzizi, kunyanya muOrinoco neAmazon.
Ndeapi stingrays emvura yakachena aripo?
Pakazara kune marudzi anopfuura 500 akasiyana emwaranzi munyika, mazhinji acho anogara mugungwa, kureva mumvura yemunyu. Kune dzinenge 28 mhando dzakasiyana mumhuri yemvura yakachena stingray, inongowanikwa mumvura yakachena. Iyo Leopold stingray inonzi inonzi endemic species, zvinoreva kuti inongoitika munzvimbo duku, inotsanangurwa yekugovera.
Imwe mhuka, iyo ine hukama hwepedyo peacock-eyed stingray, ine huwandu hwakakura. Inoitika munzvimbo huru munzizi huru dzakadai seOrinoco, Amazon, uye La Plata. Mhando iyi inowanzova neruvara rwakareruka uye yakakura kudarika Leopold's stingray. Zvichienderana nenharaunda, zvingangoita makumi maviri akasiyana-siyana mavara akasiyana-siyana epicock-eyed stingray anozivikanwa.
Kuzvibata
Ko mvura yakachena stingrays kurarama sei?
Hazvisi zvakawanda zvinozivikanwa pamusoro pemvura yakachena stingrays. Mamwe marudzi, akadai saLeopold stingray, anongozivikanwa semarudzi akasiyana kubva pakutanga kwema1990. Vatsvakurudzi havatombozivi kuti vari kushanda masikati kana usiku.
Vanozviviga mumadhaka mujinga merwizi kuti varare. Kana dzamuka, dzinotsvanzvadzira pasi dzichitsvaka zvokudya. Havana kushambira vakasununguka mumvura, ndicho chikonzero iwe usingawanzovaona mumasikirwo - kana chete chidimbu chakatenderera chavanosiya muvhu pavanosiya nzvimbo dzavo dzekuvata.
MuSouth America, mvura yakachena stingrays inotyiwa kupfuura piranhas: apo vanhu vanotsika netsaona pamwaranzi yakarara yakavanda muzasi menzizi. Kuti izvidzivirire, hove inobva yabaya nehuturu hwayo hune chepfu: maronda anorwadza zvikuru uye anoporesa zvakanyanya. Chepfu yacho inogona kutouraya vana vadiki.
Kuti vadzivise tsaona dzakadaro, vanhu vokuSouth America vakagadzira mano: pavanoyambuka mahombekombe ejecha mumvura isina kudzika, vanokwenya nhanho dzavo mujecha: vanongorovera rutivi rwemwaranzi netsoka yavo, iyo inobva yashambira nokukurumidza.
Shamwari uye vavengi vemvura yakachena stingrays
Sezvo stingrays emvura yakachena seLeopold stingray anogara akahwanda uye anogona kuzvidzivirira zvakanyanya nekuda kwehupfu hwadzo, haatombove nevavengi venyama. Kazhinji, mwaranzi midiki inobatwa nedzimwe hove dzinodya. Zvisinei, dzinovhimwa uye dzinodyiwa nevagari vemo, uye dzinobatwawo nokuda kwokutengesa hove dzokushongedza.
Ko stingrays yemvura yakachena inobereka sei?
Mvura yakachena stingrays inobereka kurarama vaduku. Hadzi dzinokura pabonde pazera remakore maviri kusvika mana. Kugadzira, iyo inogona kutora maminitsi makumi maviri kusvika makumi matatu, mhuka dzinovata nedumbu kusvika kudumbu.
Mwedzi mitatu gare gare, hadzi dzinobereka kusvika kune gumi nemaviri, iyo ine dhayamita yemasendimita matanhatu kusvika ku17. Mwaranzi yemwana yakatogadzirwa zvakakwana uye yakazvimiririra zvachose. Zvisinei, zvinotendwa kuti vanogara pedyo naamai vavo kwemazuva mashomanana okutanga kuti vazvidzivirire pazvikara.
Ko stingrays yemvura yakachena inovhima sei?
Mvura yakachena stingrays ihove dzinodya. Mupendero-sepectoral fins, panogara nhengo dzekunzwa, dzinogara padivi remuviri. Aya ndiwo maonero avanoita mhuka yavo. Pavanongobata mhuka nepectoral fins yavo, vanoita uye vanoenda nayo kumuromo wavo. Vanoisa muviri wavo wose pamusoro pehove hombe uye vanorova mapapiro avo pasi kuti vabate panzvimbo.