
brazilian gitarfish

renobatidae kudumbatthile oru inam malsyamaanu brazilian gitarfish (seudobatos horkely). bhookhandangalude shelfile theeradesha jalamaan brazeelinte swaabhaavika aavaasavyavastha. eee malsyam jeevanullathaanu, koodaathe neenda garbhakaalamund, februvariyil jeevanulla naaykkuttikalude jananathode avasaanikkunnu. eee samayat malsyangal theevramaaya malsyabandhana pravarthanangalkku vidheyamaanengilum amithamaya mathsyabandhanathinte falamaayi sameepa varshangalil mathsyabandhanangal kurayunnu. prajnana valippathilulla malsyangal valare kuravaayathinaal, internaashanal union phoor kansarveshan oof nechar malsyathinte samrakshana nila "gurutharamaaya vamshanaashabheeshani" yaanennu vilayiruthi.
vargeekaranam.
1841ll mullar henley brazilian gitaarfishine aadyamaayi "rhinobattos horkely" ennu visheshippichu. jarmman sasyashaasthranjanaaya doow. berlin sarvakalaashaalayile plaant physiology professoraaya johann horkel, madyathil sookshichirikkunna malsyathinte oru maathruka avarkk ayachirunnu.
vivaranam.
eee inathinu ekadesham oru neelatthil valaraan kazhiyum, ennaal kooduthal saadhaaranamaaya praayapoortthiyaayavarude valippam ekadesham aanu. dorsal uparithalam oru ekeekritha olivu-chaaraniramo thavitt niramo aanu. mookkil irunda paadukalundu, mookkinu neelamundu. kireedam transwersley phlait allengil alpam convex aanu.
paristhithi.
brazilian gitarfish kuranja fekanditti vaivipaaras malsyamaanu. maarchil kondinental shelfill inacheral nadakkunnu, taamasiyaathe muthirnnavar shelfinte puram bhaagangalilekku chitharunnu. muttakal oru aavaranathinullil adangiyirikkunnu, novemberil aantharika bhookhanda shelfinte choodullathum aazhamillaathathumaaya vellathilekku madangunnathuvare penthumbikkullil nishkriyamaayi thudarunnu. aadyam manjakkaru sanjikalil ninnum pinneedu garbhashaya sravangalil ninnum poshanam nedunna kunjungal penthumbikkullil vikasikkunnu; avaa desemberil ekadesham neelatthil ninnu februvariyil janikkumbol vare valarunnu. penthumbikal ekadesham 4 vayassil pakwata praapikkukayum valia malsyangalkku valia maalinyangalulla maalinya valuppam 4 muthal 12 vare aayirikkum. akathe shelf cheria malsyangalkku pradhana nazhsari eriyakal nalkunnu. ivide sthreekalum praayapoorthiyaakaathavarum jody-tralling, beach saine netting ennivayaal pidikkappedaan prathyekichum saadhyathayund. pidikoodunnavaril bhooribhaagavum garbhinikalaya sthreekalaanu. varshavasaanam, muthirnnavar akathe shelfill kooduthal vyaapakamaayi chitharikkidakkukayum ottar-trallingle pidikkappedukayum cheiyunnu.
padavi.
pii" neridunna pradhana bheeshani. horkeli "amithamaayi malsyabandhanam nadathunnu. trolling, beach saine, gilnettu enniva vazhi pidikkappedunna eee malsyam parambaraagathamaayi thekkan braseelinte theerathu pidikkappedunna pradhana battoid malsyamaanu. rioo grande, itaaji ennivayaanu ithu erangunna pradhana thuramukhangal. 1975ll 842 tonn rioo grandale irakkiyappol 1984 aayappozhekkum athu 1804 tannayi uyarnnu. athinusesham 2002ll malsyam 157 tannayi kurayukayum athinusesham athu kurayukayum cheythu. 1986 muthal thekkan brazeel jalathil malsyam 80 sathamaanathiladhikam kuranjathaayi thonnunnu. eee thelivukalude adisthaanathil, internaashanal union phoor kansarveshan oof nechar, amithamaya malsyabandhanam kaaranam ekadesham patthu varshathinullil brazilian gitarfish vamshanasham sambhavikkumennu aashankappedunnu, athinaal athinte samrakshana nila "gurutharamaaya vamshanaashabheeshani" yaanennu vilayiruthiyittundu.