
kizhakkan shovelnose stingaari

eestten shovelnose stingaari ("trigonoptera imittaatta") eurolophidae kudumbatthile oru speesheesaanu, ithu tasmania ozhikeyulla thekkukizhakkan australiyayile theeradesha jalathil kaanapedunnu. eee inathinu neelathekkaal veethiyulla vrithaakrithiyilulla pectoral phiin disk, obttus angle roopappeduthunna mamsalamaaya mookk, kaudal finnil avasaanikkunna thaarathamyena cheria wall ennivayundu. athinte mookkukalude puram vashangalil pradhana lobukalum avaykkidayil sakthamaaya arikukalulla purambhaagathulla oru charmmatthinte paavaada aakruthiyilulla thirasseela undu. dorsal niram kooduthalum saadhaarana thavitt niramaan, idaykkide irundathum koodaathe/allengil bharam kuranja paadukalum chitharikkidakkunnu. valia stingarikalilonnaaya ithinu kuranjathu neelamenkilum valaraan kazhiyum.
pradhaanamaayum polykite puzhukkale vettayaadunna kizhakkan shovelnose stingari valare aazhamillathathum theeradesha ulkkadalukalil sookshumamaaya substrateukalkku mukalilullathumaanu, ennirunnaalum ithu aazham vare allengil athil kooduthal vare vyathyaasappedunnu. prathyulppaadanam applaasental vaivipaaras aanu, penthumbikal avarude garbhastha sisukkalkku histotroph (garbhaashayathile paal) nalkunnu. bhroonangalude garbhakalam 4 muthal 7 maasam vare neendunilkkumenkilum ithinu munbu muttakal thaalkkaalikamaayi vikasippichedukkunna kaalayalav neendunilkkunnu. februvari avasaanam muthal epril vare ellah varshavum ezhu naaykkuttikalude maalinyam vare penkuttikal uthpaadippikkunnu. saine valakalum bottom trollukalum upayogichu kadaltheerathe vaanijya mathsyabandhanathiloode eee inam aakasmikamaayi pidikkappedunnu, koodaathe aavaasavyavasthayude nashavum aakramanathmaka enangalum ithine baadhichekkaam. portt philipil athinte ennam kuranjathaayi ariyappedunnu, internaashanal union phoor kansarveshan oof nechar (iucn) ithine ettavum aashankayillaathathaayi pattikappedutthiyittundu.
vargeekaranam.
2008 leeii komanvelthu scientific aandu industrial research oorganaiseshan (siroo) prasidheekaranathil aupachaarikamaayi vivarikkappedunnathinu munbu, eestten shovelnose stingari thaalkkaalikamaayi "trigonoptera" ezz. pii. ennariyappettirunnu. bii "ennum palappozhum tii ennu thettayi thiricharinju. testasia "allengil" tii. mucosa ". eee rund inangalumaayi adutha saamyam ullathinaal, gorden earsley, peettar laast, martin gomon ennivar ithinu "imittaatta" enna prathyeka namam nalki. victoriyayile vilsons promonteric kizhakkayi baas kadalidukkil pidikkappedunna praayapoorthiyaaya oru neenda purushanaan eee tharam maathruka
vitharanavum aavaasavyavasthayum.
thekkukizhakkan austreliyayil nyoo southu veyilsile jervis bay muthal beach portt vare, orupakshe thekkan australiyayile gulf sent vinsent vare kizhakkan shovelnose stingari kaanapedunnu. vadakkan baas kadalidukkil ithu kaanapedunnu, ithu flindezhs dveepil ninnu kaanapedunnu, pakshe tasmaniyayil ninnu thanne ithu kaanapedunnilla. eee kiranatthinte vitharana kendram victoriyaykku purathaanu, ithu portt philipp, padinjaaran thuramukhangalil daaraalamundu. thaazheyulla oru jeevivarggamaaya kizhakkan shovelnose stingaari, aazhathil thaazheyulla vellathil mriduvaaya adithattukalulla abhayam nalkunna, kadaltheera aavaasavyavasthaye eshtappedunnu. ennirunnaalum, ithu aazhathil ninnu ariyappedunnu, koodaathe bhookhanda charivil ninnu shekharicha eee inathinte oru maathrkayude rekhayundu.
vivaranam.
kizhakkan shovelnose stingariyude pectoral phiin disk vrithaakruthiyilullathum neelathekkaal veethiyullathum madhyathil kattiyullathumaanu. diskinte munvashathe arikukal nereyaayathum soumyamaayi convex cheiyunnathum mamsalavum munnott pookaathathumaaya mookkil moorchayulla konilaanu othucherunnathu; diskinte puram konukal vishaalamaayi vrithaakruthiyilullathaanu. idatharam valippamulla annukalkku sesham angular posteeriyar rimmukalum "vaalukalum" ulla valia cooma aakruthiyilulla churulukal kaanapedunnu, avaa nethragolatthinte munvashathe moonnilonninu thazheyaayi thaazhekku valayunnu. oro naasaarandhrathinteyum purambhaagam oru pradhanavum parannathumaaya lobaayi vikasippichirikkunnu. mookkinuchuttukalil, paappillakalal (mulakkannukal polulla gadanakal) pothinjirikkunna aazhathilulla madhyanira romavum cheria vaayaykk mukaliloode aazhathil arikukalulla pinbhaagavum ulla charmmatthinte oru paavaada aakruthiyilulla thirasseelayundu. thaazhathe thaadiyellu mukalbhagam maraykkukayum pappillayude idathoornna paadukal vahikkukayum cheiyunnu. wayinte tharayil madhyathil moonnu paappillakalum iru konukalkkadutthum onno rando paappillakalum undu. pallukalkk andaakrithiyilulla aditharayundu, thaazhathe thaadiyellinte akathum madhyathilum ullava nattellinte arikukalulla kooduthal thrikonaakrithiyilullavayi maarunnu. avaa oru kwinkonks paattenil krameekarichirikkunnu, ekadesham 22 mukalilum 24 thaazheyumulla varikal. anchu jody gill slittukal ezz aakruthiyilaanu.
pelvik chirakukalkk mithamaaya valipavum ekadesham thrikonaakrithiyumundu; aanthumbikalkku karuthuttathum cheruthumaaya clasperukalundu. sugamamayi taper cheiyunna vaalinu adithattil paranna oval cross sekshan undu, ithu oru lans polulla cadell finnil avasaanikkunnu; ithu disk vare naalil moonnu neelamundu. saadhaaranayaayi rund nakham kuthunna nattellukal, mukalile bhagam saadhaaranayaayi thaazhathethinekkaal valuthaanu, walk mukalil athinte neelatthinte pakuthiyolam kaanapedunnu. walk dorsal finz phiin foldukalum illa. charmmam poornnamaayum minusamaarnnathaan. dorsal niram manja muthal irunda chaaraniram vare aayirikkum, ithu madhyarekhayilekku irundathum chirakukalude arikukalilekku bharam kuranjathumaanu; chila valia vyakthikalkk nalla karuppum thavittuniratthilulla paadukalum labikkum. adibhaagam ilam niramullathum irunda chirakukalude arikukalum chilappol vayattil kramarahithamaya irunda paadukalum undu. adisthaanam kadannu wall poornnamaayum irundathaanu. eee inam ariyappedunna paramavadhi neelatthil athunnu, ithu janussile ettavum valia amgavum kudumbatthile valia amgangalilonnaakunnu.
jeevashasthravum paristhithiyum.
kizhakkan shovelnose stingaari cheria benthik jeevikale, praadhamikamaayi polykite puzhukkale bhakshikkukayum athinte iraye thirayunnathinaayi kuzhikal khananam cheyyukayum cheiyunnu. valathuvashath orotta pravarthanakshamamaaya andashayamulla penpakshikal mattu stingre speesheesukaleppole applaasental vaivipaaras aanu. beejasankalanam cheythukazhinjaal, thaarathamyena valia muttakal 5 muthal 8 maasam vare vikasikkathe garbhaashayathil nilanirthunnu, athinusesham bhroonangal uyarnnuvarikayum 4 muthal 7 maasam vare athivegam vikasikkukayum cheiyunnu. bhroonangalkku aadyam aantharikavum bahyavumaaya manjakkaru sanjikal nilanilkkunnu; manjakkaruyude vitharanam theernnukazhinjaal avaykku poshakangalaal sambannamaaya histotroph (garbhaashayathile paal) amma nalkunnu. februvari avasaanathinum epril avasaanathinum idayil penkuttikal prathivarsham oru maalinyam vahikkukayum udan thanne oru puthiya baachu oovaye andotpaadanam nadathukayum cheiyunnu; maalinyathinte valuppam ezhu vare vardhikkukayum penn valippathinanusarichu vardhikkukayum cheiyunnu. navajaathashishukkalude neelam; navajaathashishukkalude bharam muttayude bhaarathil ninnu pathiratti vardhana maathrame prathinideekarikkunnulla, ithu oru jeevanulla kiranatthil ninnu ariyappedunna ettavum cheria vardhanavaanu. purushanmaar ekadesham 4.5 vayassum sthreekal ekadesham 5 vayassum praayavum ullappol laingika pakwata kaivarikkunnu. purushanmaarkk kuranjathu 10 varshavum sthreekalkku 12 varshavumaan paramavadhi ayuss.
manushyarude edapedalukal.
manushyare baadhikkaatha kizhakkan shovalnos stingariye vellathinadiyil eluppathil sameepikkaan kazhiyum. sariyaaya reethiyil thayyaaraakkiyittillengil chavachaalum athinte maamsam bhakshyayogyamaanu. beechileyum danish seansileyum theeradesha vaanijya malsyabandhanavum bottom trollukalum, prathyekichu thekkan, kizhakkan scalefish, sraava malsyabandhanam (sesf) ennivayaal eee inam aakasmikamaayi pidikkappedunnu. aazhamillaatha vellathil ninnu edukkunnathinaal ithu palappozhum upekshikkappedaathe athijeevikkunnu, ennirunnaalum bharameriya malsyabandhana upakaranangal ulppedumbol mechanical parikkukal undaakunnathum pidippedumbol kuttikale garbhachhidram cheyyaanulla pravanathayum aashankaajanakamaanu. eee inathinu kooduthal bheeshanikalil aavaasavyavasthayude apachayavum theeradesha vikasanathil ninnum vinoda pravarthanangalil ninnumulla aswasthathayum aakramanathmaka enangalum ulppedaam. portt philipile kizhakkan shovelnose stingariyude janasamkhya kazhinja dashakathil kuranjathaayi ariyappedunnu, ithu thudarchayaaya malsyabandhana sammarddathodoppam internaashanal union phoor kansarveshan oof nechar (iucn) ithine apakadasaadhyathayilekku nayichu. cheria trolling nadakkunna baas kadalidukkum aduthide victoriyayil ninnu maattivacha niravadhi maraine protected eriyakalum (emm. pii. eiii.) polulla chila abhaya pradeshangal ithinte paridhiyil ulppedunnu. sraavukalude samrakshanathinum paripaalanathinumaayi 2004leeii australian deseeya karmapadhathi nadappaakkunnathiloodeyum ithu prayojanam nedum.

