Climate change is damaging fish brains and causing them to lose their survival instinct, researchers warn

Loading...

mD:súh yd j,dl=¿ w;r mr;rh jeäfõ

fkdkj;sk j¾Idm;khl wjodkula

iunr ld,.=K ;;a;ajhla fjkqfjka mD:súh iy wyfia j,dl=¿ w;r meje;sh hq;= ^ÿr& mr;rh úh hq;af;a ls' ó' 12 la hehs mejefia'

kuq;a wo mj;sk mdßißl w¾nqoh yuqfõ ls' ó' fod<fya iSudj ;jÿrg;a by< hk ;;a;ajhla ks¾udKh ùfï wjodkula o we;s w;r fï wdldrhg j,dl=¿ iy mD:súh w;r ÿr m%udKh fjkia ùu f,dal ld,.=K ;;a;ajfha úúO wiu;=,s;;d u;= ùu je<elaúh fkdyels fjkq we;ehs ld,.=K úoHd{fhda fmkajd fo;s'

f.da,Sh foaY.=K úm¾hdih yuqfõ f,dal ffcj meje;au nrm;< ;¾ckhla lrd f.k hk whqre fmkajd fok m¾fhaIK wkdjrKh lsÍï folla bl=;a foi;sh ;=< m%ldYhg m;a úh' bka tlla mD:súfha f.dvìï iy id.r jdis ffcj m%cdjg fmdÿfõ wod< fjoa§ fojk m¾fhaIK jd¾;dj Rcqju id.rjdiS ffcj m%cdj b,lal lr .;a;la úh'

fuys m<uq lreKq wkdjrKfhka lshefjkafka jdhqf.da,h ;=< Tlaiscka jdhqj m%;sY;hla jYfhka RK w.hla .kakd ;;a;ajhla f.dv ke‍fÛñka mj;sk nj hs' ;j o Bg idfmalaIj ldnkavfhdlaihsâ m%;sY;h by< w.hla lrd .uka lrñka ;sfnk nj o bka lshefõ'

wefußld tlai;a ckmofha ñÑ.ka úYajúoHd,fha ld,.=K úoHd{hl= fuka u mßirfõÈhl= o jk wdpd¾h l%siafgdam¾ fmda,aika by; wkdjrKh isÿ l< nj frdhsg¾ mqj;a fiajdj jd¾;d fldg ;sìKs'

Tlaiscka RK w.h 2015 isg wdpd¾h fmda,aika fmkajd fok wkaoug bl=;a jir ñ,shk 541 la ;rï ld,hla ;siafia mD:súhg wh;a jdhq f.da,fha Tlaiscka jdhqj" m%;sY;hla jYfhka ishhg 10 la 35 la w;r m%dudKsl w.hlska fjkiaùïj,g n÷ka ù ;sfí' ;jÿrg;a meyeÈ,s lrkjdkï wvq jeäùïj,g ,la ù ;sfí' ta wkqj th m%Yakhla fkdfõ' tfy;a m%Yakh jkafka 2015 j¾Ifha isg fï fjkia ùu wvq jk ;;a;ajhla lrd u .uka lrñka ;sîuhs'

ksÍlaIKh fldg we;s wdldrhg lsisÿ wdldrhl jeä ùula y÷kdf.k ke;' tfia .;a úg b;d meyeÈ,sju jdhq f.da,h ;=< Tlaiscka >k;ajfha wju ùula ksÍlaIKh l< yels h' wdpd¾h fmda,aika fufia jdhqf.da,h ;=< Tlaiscka >k;‍ajfha wvq ùu" f.da,Sh WIaK;ajh È.ska È.gu by< hEu iuÛ .eg .eiqKq ;;a;ajhla h hkqfjka o mjihs'

f.da,Sh WIaK;ajh by< hEu yd ne÷Kq wks;a ixisoaêh jkafka “´fidaka úhk úkdYh” hkak fmdÿfõ ljqre;a okakd lreKls' wjdikdjlg fuka ljqre;a okakd fï lreK tfia okakd ;rug u fkd i,ld yer ;sfnkakla o fõ' ´fidaka ^O3& ys ksfrda.s meje;au ;=< mD:súh iy j,dl=¿ ia:dk.; ùu w;r meyeÈ,s ÿr mr;rhla ;sìh hq;= fõ'

ta wkqj iunr ld,.=K ;;a;ajhla fjkqfjka mD:súh iy wyfia j,dl=¿ w;r meje;sh hq;= ^ÿr& mr;rh úh hq;af;a ls' ó' 12 la hehs mejefia' kuq;a wo mj;sk mdßißl w¾nqoh yuqfõ hg lS ls' ó' fod<fya iSudj ;jÿrg;a by< hk ;;a;ajhla ks¾udKh ùfï wjodkula o we;s w;r fï wdldrhg j,dl=¿ iy mD:súh w;r ÿr m%udKh fjkia ùu f,dal ld,.=K ;;a;ajfha úúO wiu;=,s;;d u;= ùu je<elaúh fkdyels fjkq we;ehs ld,.=K úoHd{fhda fmkajd fo;s' kso¾Ykhla f,i hï fyhlska mD:súh iy j,dl=¿ meje;au w;r ÿr m%udKh ls' ó' 80 la olajd ÿrlg .shfyd;a tl È.g jeis weo yef<k jHikldÍ ld,.=K ;;a;ajhla f,djg Wod fjkq we;'

´fidka úhk úkdY ùfuka yg .; yels jHikldÍ m%;sM, .ek fmdÿ iudch ksis f,iska oekqj;a lsßula wog isÿfjkafka ke;' ta ksidu ir, .DydY%s; lghq;=j, isg uyd mßudK l¾udka; iy fjk;a lghq;= yryd ´fidka úkdY ùu idudkH ldrKhla f,iska i,lk ;eklg fmdÿ uyck;dj .uka fldg ;sfí'

by; lS mdßißl jHikh yuqfõ wo f,dalh uqyqK md ;sfnk nrm;<u m%YakldÍ ;;a;ajh jdhqf.da,fha ldnkavfhdlaihsâ m%;sY;h Tfrd;a;= fkd fok wdldrfhka by< hEu h hkak meyeÈ,sh' mD:sú uÜgñka th wm y÷kd.kafka f.da,Sh WIaK;ajh by< hEu jYfhks' tfy;a id.r l,dmhg th oefkkafka id.r Èh weisâlrKh ùula f,isks' c,fha wdï,sl;ajh by< hEula jYfhka o y÷kd .kshs' ta wkqj fï jk úg id.r jdiS u;aiHhkaf.a iyc ix{Hf njla iu. we;s iaùh meje;au wfydais fjñka mj;sk njg m¾fhaIKd;aulj ikd: fldgf.k ;sfí' ,kavka ys fâ,s fï,a fï m¾fhaIK jd¾;dj m%ldYhg m;a fldg we;'

id.r l,dmh hehs wm y÷kd.kakd mßir moaO;sh ldnkavfhdlaihsâ jdhqj ;uka ;=<g Wrd .ksñka jdhqf.da,fha jdhq iu;=,kh wdrlaId lsÍug lghq;= lrkafka w;S;fha isguh' kuq;a by; lS ixisoaêh ;=< wo isÿ j ;sfnkafka m%udKd;aulj Èfkka Èk jeäjk ldnkavfhdlaihsâ È.ska È.g u tfia Wrd .ekSu ;=< id.r c,h nrm;< wdldrfhka wdï,sl njlg fm/<Suhs' id.r c,h weisâlrKh ùu hkqfjka úoHd{hka y÷kd.kafka by;ska lS ta ;;a;ajhhs'

fï iïnkaOfhka ridhkd.dr uÜgñka isÿ l< m¾fhaIKj,ska miq ksl=;a l< jd¾;dfõ i|yka jk wdldrhg fufia È.ska È.g u id.rh úiska ldnkavfhdlaihsâ Wrd .ekSu ksid id.r wNHka;ßl jYfhka úisr hdula o wLKavj isÿ fõ' ta ksid wo jk úg c,fha meje;sh hq;= mS' tÉ' ^P.H.& w.h o wju ;;a;ajhlg weo jefgñka ;sfí'

id.r c,h úiska ldnkavfhdlaihsâ jdhqj Wrd .ksñka w;S;fha isg meje;s iajdNdúl l%shdoduh fï jk úg t;ekska tydg .uka fldg we;s miqìul úoHd{fhda fuh “ldnkavfhdlaihsâ ldkaÿj” hkqfjka kï lsÍug o fhduq ù isá;s' School of Biology at the Georgia Institute of Technology in Atlanta ys iyldr uydpd¾h ä' älaika uy;d fmkajd fokafka by; ;;a;ajh fya;= fldgf.k u;aiHhkaf.a iakdhq ixfõÈ;dj o ÿ¾j, fjñka mj;skafka h hkak i;Hhla nj hs' th ;uka úiska ridhkd.dr m¾fhaIK yryd ikd: lrf.k we;ehs o Tyq mjihs'

id.r c,fha PH w.h idudkH ;;a;ajfhka mj;skafka hehs .Kkh flfrkafka th 8'14 la jYfhka mj;skafka kï h' by; lS kj wOHhk m¾fhaIK jd¾;dj fï iïnkaOfhka memqjd ksõ.skshd id.r l,dmfha isÿ l< ksÍlaIKhla o fuys ths' ta wkqj tu id.r l,dmfha c,h i;= PH w.fha ftlHh 7'8 la f;la my; nei ;sfí'

fï ksÍlaIKh;a iu. j¾;udkfha isÿ flfrk yß;d.dr jdhq úfudapkh yuqfõ wm uqyqK mdkafka f,dal uÜgñka WIaK;ajh by< hEug muKla fkdj id.r c,fha meje;sh hq;= PH w.h my; jeàfï wjodkug o ta;a iu.u wm isá;ehs hkak .ek c.;a wjOdkh fhduq ù ;sfí'

id.r c,hg ridhksl o%jH tl;= ùfuka c,fha wdï,sl;ajh by< hEu .ek mQ¾j ld,Skj o m¾fhaIK lghq;= isÿ flreKs' ta;a tod Tjqka fmkajd ÿkafka fï ;;a;ajh u;aiHhka f.a ffcj meje;aug wk;=reodhl fkdfõ h lshdhs' Bg fya;= jYfhka u;aiH isref¾ we;s mgl t;ek§ wdrlaIKhla jYfhka lghq;= lrk njla fmkajd § ;sìKs'

;j o c,fha Èhfjk ridhkslhkag tfrysj ta ;;a;aj fjkia lsÍug odhl;ajhla ta u;aiH mgl l%shdldß;ajfhka ,efnkjd h hkak;a Tjqka úiska tod fmkajd § we;s ;;a;ajhla fõ'

th tfia ùu fkd ùu flfia fj;;a id.r c,fha ridhksl wdï,sl;ajh by< hEu u;aiH ffcj meje;aug ;¾ckhla nj;a" tu.ska ta i;=kaf.a bkao%sh ixfõÈ;djh wka;rdhg ,la jkafka h lshd;a f,djg lreKq bÈßm;a lrk m%:u m¾fhaIK fy<s lsÍu uq,ska fmkajd ÿka jd¾;d nj fmkajd § ;sfí' u;aiHhkaf.a bkao%Sh ixfõÈ;djh wk;=rg ,la fjkjd h hkqfjka fu;ek § woyia flfrkafka iajdNdúlj u Wka ish f.dÿre fidhd .ekSu Wfoid fï ,nd we;s ixfõÈ y÷kd .ekSu fyj;a bj ÿ¾j, ùuhs'

ta wkqj ish wd>%dK Yla;sfhka wdydrh fyda f.dÿr y÷kd .ekSug fuka u tla fohla ;j;a foalska fjka lr y÷kd .ekSfï yelshdj o ÿ¾j, ùfï m%jK;djhla wod< m¾fhaIKj,ska y÷kdf.k ;sfí'

fï ksidu id.rjdis u;aiHhkaf.a idudkH yeisÍï ú,dih widudkH f,iska wjq,a ùfï wkd.; wjodkula o fuys ;sfí' tfia fjkafka ta i;=kaf.a iakdhq ixfõÈ;djh .%yKh fyda m%;s.%yKh lsÍug olajk wld¾hlaIu;dj u; h' úoHd{fhda fuh GABAA ;;a;ajh” kñka y÷kajd fo;s'

GABAA kï fï ;;a;ajh hgf;a isÿjkafka ffcj meje;aula ;=< iakdhq l%shdldß;ajfha ksje/È wldrdÈh ÿ¾j, ùuhs' fï ;;a;ajh u;aiHhkaf.a ffoksl yeisÍu yryd Tjqkaf.a iuia; ffcj meje;au uq¿ukskau wfydais lrkafka oehs hg lS m¾fhaIK jd¾;dj .fõIKhl fhfohs'

ta fjkqfjka ridhkd.drhla ;=< tla u;aiH lKavdhula idudkH c,fha msyskkakg wjia:dj i,id § Wka lsisÿ wmyiqjlska f;drj f.dÿre fidhd .kakd wdldrh ksÍlaIKh fldg ;sfí' ;j o wjg mßirh ;=< f;dard fírd .ekSï isÿ lrk wdldrh;a y÷kdf.k we;' kuq;a ldnkavfhdlaihsâ ñY% by< idkao%;djhla iys; c,hg oeuq u;aiHhkag ish f.dÿre fõjd fjk;a f;dard fírd .ekSï fõjd y÷kd .ekSï fõjd tljr u ^iajdNdúl f,iska& lr.ekSug fkd yels ;;a;ajhla ksÍlaIKh úh' Tjqka ta i|yd wu;r ld,hla .kakjd o oel.; yels úh'

b;d meyeÈ,sju y÷kdf.k we;s hg lS ;;a;ajh yuqfõ wod< m¾fhaIK lKavdhu fï jk úg ksr; ù isákafka id.r c,h tfia weisâlrKh fjoa§ u;aiHhkag Bg wkqj¾;kh fjñka mj;skakg mq¿jka o hkak .ek fidhd ne,Suhs' mj;sk f.da,Sh mßirh w¾nqoh wdmiq yerùug m¾fhaIK lKavdhula jYfhka ;uka wiu;a h hkak jgyd .ekSu ksid tlu úi÷u mj;sk ;;a;ajhkag wkqj¾;kh ùu hehs t;ek§ Tjqka is;=jd fjkakg o mq¿jk'

id.r weisâlrKhg ,laùu hk fï ;;a;ajh yÈisfha we;sjQ ;;a;ajhla hehs fuys§ jgyd fkd .; hq;= h' fï jkdys È.= ld,hl isg u isÿ lrñka ;sfnkakd jQ udkj l%shdj,shlska Wmka wÆ;a u m%;sM,hla fõ' fuys B<Û ;;a;ajh l=ula o hkak fï jk úg;a wm fkdokakd fohla fõ'

- is¿ñK

Loading...