Crustaceans mhuka dzine mavara uye dzinozivikanwa pasi rese. Kune akawanda marudzi anonyanya kuvimba nema crustaceans mukudya kwavo. Imwe yemakristacea iyo inokwezva yakanyanya kutariswa ndeye crab yebhuruu. Kusiyana nemamwe magakanje, iwo ruvara rwavanarwo haruna kusikwa, saka zvinomira zvakanyanya kubva kune mamwe ese. Kunyangwe hazvo isati yarongwa semhuka iri panjodzi, makara mazhinji anofa mazuva ese nekuda kwekusvibiswa kwemakungwa nenzizi nekuda kwekuita kwevanhu.
Iwe unoda kuziva zvakavanzika zvegakanje rebhuruu uye zvisingawanzo? Muchikamu chino tinotsanangura zvese kwauri.
Mhando huru
Mhando iyi ine runako rusingaenzanisike rwunopihwa neruvara rwekunze rwebhuruu. Kunewo mamwe marudzi anogona kuve iridescent bhuruu, bhonzo, orenji, kana kunyangwe pingi. Aya mavara ekunze anoita kuti gamba rebhuruu rizivikanwe munzvimbo zhinji dzepasi.
Imwe yemakakatanwa makuru ayo crab anayo nezvimwe ndizvo zvekunze keel. Iyi keel ine mamwe mana asina kunyatso tsanangurwa keels pamusoro pecarapace. Iwo machell akafukidzwa nevhudzi rakatsetseka mukati. Iyo Rwizi gakanje inowanzove nemusoro nenhengo dzemukati dzakafukidzwa negoko. Izvi zvinoshanda sedziviriro kubva kune chero chiitiko kana njodzi zvese zvecosystem kwazvinogara uye nezvekurwisa kwechero chikara. Izvo zvikamu zvemudumbu zvakafukidzwa neyakagadziriswa membrane inovabatsira kufamba zviri nyore ivo vachiramba vakachengetedzwa.
Gakanje iri rine tumakwara twakakura kwazvo kumberi. Izvo zvakakosha kwazvo kwavari sezvo ivo vajaira kudya, chera kusvika pamamita maviri pakadzika uye uzvidzivirire kubva kuzvinogona zvikara. Imwe neimwe yezvisungo inotungamira mana mairi emakumbo ayo aanoshandisa kufamba uye mamwe mana mapara ayo aanoshandisa kushambira. Makumbo aya ave kunzi pleopods. Iwo anowanzo kuve akafukidzwa nevhudzi rakanaka rinoshandira kugadzirisa mazai mariri.
Descripcion
Iine maziso maviri pamagumo ezvinyorwa. Dzese kuravira nekubata zvinonzwisisika nekaviri keakakura matende. Kana ivo vaine hutano hwakanaka uye mamiriro echikafu, vanogona kuve pakati pe25 kusvika 30 cm cm uye vorema kota yekirogiramu. Chete 20% yehuremu hwayo hwese ndiwo muswe.
Pakati pemurume nemukadzi pane misiyano yakajeka kwazvo. Yekutanga ndipo panowanikwa pores genital. Kana iri hadzi, iri chaizvo iri pazasi pegumbo rechitatu remakumbo. Chimiro chayo chine ovoid uye chakajeka. Kune rimwe divi, munhurume tinowana nhengo iri pazasi memakumbo echishanu.
Kune mimwe misiyano yakajeka uye iri nyore kukoshesa. Semuenzaniso, mukono muhombe pane hadzi uye une nzara dzakasimba. Mukadzi ane marefu akawanda kupfuura echirume.
Idzi mhuka, sezvavanokura, vanoita shanduko yeakawandisa. Inowanzoitwa kamwe chete kana kaviri pagore muzviratidzo zvevakuru. Gakanje rebhuruu parinosiya goko rekare, rinomedza huwandu hwemvura kuti rizadze zvemukati uye nekukwanisa kuwedzera saizi. Aya ndiwo maratidziro ainoita kuve nemutumbi wakaringana wemuviri kuti uve nani mukukura kwemhasuru uye dzimwe nhengo dzemukati.
Kana vachinge vapedza kudurura exoskeleton, vachatofanira kuomesa ganda zvishoma nezvishoma vachishandisa calcium yavakamedza kuburikidza nechikafu.
Habitat nenzvimbo yekugovera
Gakanje rebhuruu rinowanzo kuve nehanya neshanduko mune mamiriro ezvakatipoteredza munzvimbo yaanogara. Kunyangwe izvi, kugona kwayo kuchinjika kune akasiyana akasiyana kwakabvumidza iyo kugara munzvimbo dzakasiyana. Iwo anowanzo kuwanikwa munzvimbo dzakaderera uko kune kwakanyanya kuwanda kwemvura senge madhamu, hova, matope, matsime, madziva. Vanosarudza mvura yakachena ine tembiricha dzakasiyana sezvo iine mhando yepamusoro uye kune chikafu chakawanda.
Nekuda kwekuti inogona kuchinjika kune akasiyana mamiriro ezvakatipoteredza, tinogona kuiwana zvese muzvitubu zvinopisa uye mumadhamu ane mvura inotonhora kwazvo. Hunhu hwayo hunopa zvakanakira kugona kurarama kusanaya kwemvura. Izvi zvinodaro nekuti vanogona kuvigwa mumatope uye kunakirwa nehunyoro. Kana vambovigwa, ivo vanokwanisa kuramba vari muchimiro chekushupika icho chingagone kusvika gore rimwe kana zvichidikanwa.
Kupa uye kubereka kwegakanje rebhuruu
Sezvo ichiwanikwa munzvimbo zhinji dzekugara, inodya zvakasiyana siyana marara uye zvasara. Inogona kudya algae, mamwe emvura invertebrate, nezvimwewo. Ivo omnivores, saka havana dambudziko rakawandisa kudya. Ivo vanowanzo kuve mukana uye vanotora mukana wekuregeredza kana shanduko munzvimbo dzekugara kuti vadye. Kudya kwavo kwakasiyana kunosanganisira mussels, hozhwa, hove, matatya, zvirimwa, zvakaora, mamwe magakanje, uye kunyangwe zvidiki zvidimbu zvebhuruu.
Icho chokwadi chekuti mhuka iyi inogona kuve chinodya hachisi chinhu chinowanzoitika. Zvinoitika chete kana kushomeka kwechikafu kwakanyanya. Zvinoitikawo pavanonzwa kumanikidzwa nemhuka dzerudzi rumwe chete uye "vakasungwa" munzvimbo dzavanogara. Pamusoro peizvo zvataurwa pamusoro, ivo vanogona kudya zvimwe zvipembenene kuburikidza ne zooplankton uye kudya diatoms.
Kana iri yekubereka kwayo, inowanzo kuve nehupenyu hupfupi, saka kukura kwayo kuri kukurumidza, sekubereka kwayo. Ivo vane akati wandei kubereka uye vanosvika pakukura pabonde pamakore mana ekuberekwa. Mukadzi anokandira mazai kana asina kukura zvakanyanya, saka vanoda kutarisirwa kwemadzimai pakukura kwavo.
Kubereka inogadziriswa nehurefu hwezuva uye tembiricha pane iyo mvura iri. Kusangana kunogona kuve muchirimo, kana tembiricha ichikwira uye mazuva akareba.
Ndinovimba kuti neruzivo urwu unogona kudzidza zvakawanda nezve yebhuruu gakanje nehunhu hwayo.