izaak casharc

izaak catshork yaa buss izaak ("holohalurus regani") cathark kii ack prajaati haye, joe dakshin africa aur dakshini namibia key taton parr aam roop seey paae jaane vaale skyliorinidae parivaar seey sambandhit haye. yeh aam taur parr baahari mahadvipiya shelf mein gaharaai mein rahata haye, jisamen purush maadaon aur kishoron kii tulanaa mein gahare paae jaate hain. izaak catshork kaa ack chhota, chauda, chapata sir aur ack majboot shareer hotaa haye joe ack lambi, patali poonchh taka hotaa haye. ise halke peele rung kii prishthabhoomi parr gahare bhoore rung key dhabbon (kishoron mein) yaa jaalidaar aur dhabbon (vayaskon mein) key alankrit rung pattern key saath-saath isake pectoral pankhon parr badhe hue dermal denticals aur isaki prishthiya madhya rekha key saath naak seey dusare prishthiya pankh taka pahachaana jaa sakata haye. yeh prajaati lambai mein pahunchati haye, jisamen narr maadaon seey badey hotey hain.
neeche rahane vaale aur shayed prakriti mein apekshaakrit sakriya, izaak catshork mukhya roop seey asthi machhliyon, crustatian aur cephalopods kii ack vividh shrinkhala koo khaate hain. isake aahar key ack mahatvapurna hisse koo matsya paalan dwara asweekrit kiye jaane seey rokaa jaa sakata haye. yeh prajaati andakar haye, jisamen maadaaen saal bhar ack samay mein dou andey detee hain. izaak catshork niyamit roop seey dakshin african nichale troll vaanijyik machhali paalan dwara pakada jaataa haye, lekin upayog key bajaay ise fenk diyaa jaataa haye. machhali pakadane key dabaav key bavjood, isaki aabaadi badh rahee haye aur iss prakaar prakriti sanrakshan key liye antarrashtriya sangh (aaee. yuu. see. aine.) ney ise cumm seey cumm chinta key roop mein aanka haye.
vargeekaran.
izaak catshork kaa varnan mool roop seey dakshin african echithologist johnn gilchrist ney 1922 key matsya paalan sarvekshan report mein kiya thaa. unhone naee prajaati koo "skyliorinus" vansh koo saunpa aur saathi echithologist charles tett regan key sammaan mein ise vishisht upnaam "regani" diyaa. 1934 mein, heinry weed faller ney iss prajaati koo apane nae banaae gaye "holohalurus" koo saunpa, joe "halelurus" kii ack upa-vanshavali haye. "holohalurus" koo taba seey poorna vansh key pada parr padonnat kiya gayaa haye. choonki gilchrist key khaate mein sandarbhit koee maujooda prakaar key namoone naheen dikhaai dete hain, 2006 mein brett maanav ney prajaati key neotype key roop mein hondeclip khaadi mein pakade gaye ack lambe narr koo naamit kiya.
aitihaasik roop seey, "aich" key beach vaigyaanik saahitya mein bahut bhram rhaa haye. regani, "aich. punctates, "aur" aich. melanostigma, "jisamen seey antim koo vibhinn samay parr" aich "kaa kanishth paryaay maanaa jaataa thaa. regani "aur khud koo" aich "key saath bhramit kiya gayaa thaa. granian. isake alawa, "aich" key dou roop. regani koo ack baar maanyata dee gaee theeh "cape" yaa "vishisht" roop aur "nettle" yaa "poorvottar" roop. uttaraardh "poorvottar" roop koo ack alag prajaati key roop mein varnit kiya gayaa thaa, "aich. , 2006 mein.
varnan.
izaak catshork kaa shareer dridh aur motaa hotaa haye, joe naatakiya roop seey poonchh kii or jhukata haye. sir bahut chhota, chauda aur chapata hotaa haye, jisamen ack kund naak hotaa haye. kshaitij roop seey andakar aankhen sir parr oonchi rakhee jaati hain aur unake neeche motee katak hoti hain; pratyek mein ack praathamik nictitating jhilli hoti haye aur usake baad ack sarpil hotaa haye. nasikaon seey pahale twacha key trikoniya paraten hoti hain joe lagbhag lambe, koniya munh taka pahunch jaati hain. munh mein chhat aur farsh donon parr pramukh papile hotey hain, aur konon parr faron kaa abhaav hotaa haye. oopari aur nichale jabadon mein ausatan 65 aur 60 daant panktiyaan hoti hain; pratyek daant apekshaakrit badaa hotaa haye, jisamen ack sankeern kendriya shikhar 1-2 chhote cosplets seey ghiraa hotaa haye. gill slitt key paanch jode hain.
pectoral pankh kaafee lambe aur chaude hotey hain. pahala prishthiya pankh shroni pankh aadhar key peechhe seey utpann hotaa haye; doosara prishthiya pankh thodaa badaa hotaa haye aur gudaa pankh aadhar key peechhe seey utpann hotaa haye. shroni aur gudaa pankh lambe aur nichale hotey hain, aur prishthiya pankh seey badey hotey hain. shroni pankhon key peechhe key mukt sire koo kuchh hudd taka ack saath jodaa jaa sakata haye, lekin kabhi bhee poori tarah seey naheen; purushon mein patale, nukile clappers hotey hain. kaudal peddencle lamba aur patala hotaa haye, vishesh roop seey yuva shark mein. kaudal finn kull lambai kaa ack-chauthai seey ack-paanchvaan hissa banaata haye aur oopari lobe kii noke key paas ack kamjor nichala lobe aur ack nilay nishan hotaa haye. gill slitt key aspas koo chhodkar, motee twacha achchi tarah seey kailsikrit dermal denticals seey dhaki hoti haye. badhe hue, spike jaise denticals pectoral finn kii oopari satah parr aur thoothan seey dusare prishthiya finn mool taka prishthiya madhya rekha key saath paae jaate hain. kishore izaak catershork halke peele seey peele bhoore rung kii prishthabhoomi parr kaee aniyamit aakar key gahare bhoore dhabbon key saath saahaspoorvak pattern kiye jaate hain. vayaskon mein jaal aur yuu-aakar key nishan banaane key liye umr key saath dhabbe badey aur fuse hoe jaate hain. tala kaa nichala bhaag saadaa safed hotaa haye, jisamen sir, shareer aur yugmit pankhon key neeche spasht kaale samvedi chhidra hotey hain. anya "holohalurus" prajaatiyon kii tarah, lekin adhikansh cartilogenous machhliyon mein pattern key vipareet, narr maadaon kii tulanaa mein bahut adhik adhikatam lambai praapt karate hainh banaam.
vitaran aur nivaas sthaan.
africa key dakshini chhor parr sthaanik, izaak catshork kii seema paschim mein luderitz, namibia seey laker poorv mein dakshin africa key durban taka faili hui haye. poorv african tata key saath aage uttar mein puraane record (ee.jee. somalia) sambhavatah anya "holohalurus" prajaatiyon koo sandarbhit kartaa haye. yeh prachur matra mein, neeche rahane vaali prajaati baahari mahadvipiya shelf aur oopari mahadvipiya dhalaan mein cumm seey cumm gahari taka rahati haye. dakshin africa seey door, yeh ack vyaapak mahadvipiya shelf vaale kshetron mein aur dakshin tata seey door aur paschimi tata seey door gaharaai mein sabse aam haye. maadaaen aur kishore naron kii tulanaa mein uthale paani mein paae jaate hain. adhikansh bhaag key liye, ack diye gaye kshetra mein shark kii sankhya poore varsh kaafee hudd taka sthir rahati haye. haalaanki, agulhas tata key sabse dakshini bindu parr shark tata kii or ack chhota sharad pravaas curr sakate hain.
jeev vigyaan aur paaristhitiki.
anya gahare samudra kii shark kii tulanaa mein, izaak catshork kaa dill apekshaakrit sakriya jeevan shally kaa sanket detaa haye. yeh ack saamaanyavaadi haye joe vibhinn prakaar kii asthi machhliyon, crustatian aur cephalopods koo khaata haye; badee shark aanupaatik roop seey adhik crustatian aur cumm machhliyon kaa sevan karati hain. isake abhilikhit aahar kaa cumm seey cumm kuchh hissa shayed machhali pakadane vaale aswachhon seey safai kaa pratinidhitva kartaa haye, teji seey chalane vaali, pelogic prajaatiyon kii upasthiti koo dekhate hue kii shark ney jeevit roop seey kabja curr liya haye. polycate keede, hydrozone, gastropods aur hagfish andey bhee kabhi-kabhi khaae jaa sakate hain. iss prajaati key pett mein aksar nematode aur flatworm parjivi hotey hain.
izaak catshork andakar hotaa haye aur binaa mausami pattern key poore varsh prajanan hotaa haye. paripakva mahilaaon mein ack hii karyatmak andashay aur dou karyatmak andashay hotey hain; ack samay mein pratyek andashay key bheetar ack andaa paripakva hotaa haye. pratyek andaa ack purse key aakar key capsule key bheetar hotaa haye joe lambe aur paar hotaa haye. capsule halka bhura hotaa haye aur chaar konon parr lambi nus hoti haye joe sambhavatah ise chattanon parr lunger daalane mein madad karati haye; isaki satah kii banaavat makhmal jaisi hoti haye aur lambai key anusaar dhaar hoti haye. andey dene kii darr agyaat haye lekin machhali pakadane key dabaav key liye iss shark key lachilepan key aadhar parr uchch maanaa jaataa haye. cumm gaharaai mein mahilaaon aur kishoron kii pramukhta seey sanket mill sakata haye kii aise paani nursory kshetron key roop mein kaam karate hain. yuva hatch lambe samay taka. purush aur mahilaaen kramshah yaun roop seey paripakva aur lambe samay taka paripakva hoti hain.
maanav antahkriya.
izaak catshork haanirahit haye aur iska koee vyaavsaayik moolya naheen haye. yeh niyamit roop seey cape town key dakshin mein heck koo lakshit karane vaale ack nichale troll machhali pakadane dwara aakasmik roop seey pakada jaataa haye (aur fenk diyaa jaataa haye). adhikansh cartilogenous machhliyon key vipareet, vaanijyik machhali pakadane kii upasthiti mein isaki sankhya badh rahee haye. isake karanon mein isaki uchch prajanan darr, cumm machhali pakadane vaale uthale paani mein iska prajanan, uchch pakad key baad key astitva key liye isaki kathorta aur iska avasarvaadi aahar shamil hoe sakata haye. prakriti sanrakshan key liye antarrashtriya sangh (aaee. yuu. see. aine.) ney parinamswarup izaak catshork koo cumm seey cumm chinta key tahat soochibaddh kiya haye, jabaki abhee bhee yeh dhyaan mein rakhate hue kii yeh apani atyadhik pratibandhit seema key kaaran nirantar jansankhya nigrani key yogya haye.

