sonora chab

cyprinidae kudumbatthile reey-find malsyangalude oru inamaanu sonora chab (gila dietaniya).
meksikkoyilum amerikkayilum ithu kaanapedunnu.
vivaranam.
"gila ditteniya", "sonora chab", arizona swadeshiyaaya ezhu inam chabbukalil onnaanu. apoorvvamaayi 200 millimeteril kaviyunna "chab" enna cheria enangalilonnaanu eee prathyeka inam. american aikyanaadukalile mikka saambilukalum 125 millimeteril kaviyunilla. sonora chabinte shareeram saadhaaranayaayi valare podunnaneyullathaanu, athinaal chila speesheesukalil fusifom terretum ullathinaal athinte peru. asaadhaaranamaaya cheria skeyilukal sradhayilppettaal sonora chabukal verthirichariyaan kazhiyum. oru laattaral lainil 63 muthal 75 vare skeyilukalundu. avayude dorsal, anala, pelvik chirakukalil ettu chirakukalundu, avayil ezho onpatho vyathyaasamund. avarude forinchiyal pallukalkk mattu arizona "chabsil" ninnu verthirichariyaan kazhiyum. avaa saadhaaranayaayi valare irunda niramullathum paarshwarekhaykku mukalilum thaazheyum samaantharamaayi pravartthikkunna rund sradheyamaaya karutha varakalullathumaanu. maraykkanaayi valare bharam kuranja underbailikalulla kaundar-shading paattenukalum avaykku undu. inacheral kaalaghattangalil, avayude jodiyaakkiyathum guda chirakukalilum chuvanna adayaalangal undaakum, vayattil ooranchu bhagangal undaakum. avarude vaalukalude adithattilulla oru vrithaakrithiyilulla sthalathinu avarude inacheral seasonukalil eluppathil thirichariyaan kazhiyum (minkley 1973).
arisonayile vitharanam.
sonora chubs kurachukaalamaayi american aikyanaadukalude thekkupadinjaaran pradeshangalil thaddesheeyamaanu. sonora, meksikoo, arizona ennividangalile rioo dii laa kansepshyan drainageukalilaanu iva pradhaanamaayum kaanappedunnath. reos balipeetathilum magdalana pradeshangalilum chitharikkidakkunna rekhakal report cheyyappettittund. reos balipeetathinte poshakanadikal "chubs"-kalkkulla valare pradhanappetta paathakalaanu, ithu arisonayile bear malayidukkile saikkamor kreekkilekk swathanthramaayi ozhukaan avare anuvadikkunnu. muttayidunna samayangalil avaa saikkamor kreekkil ninnu santa cruze kaundiyilekku sanjarikkunnu. attascosa parvathanirakalile penasco kreekkaanu "chubs" (minkley 1983)-nte ettavum janapriyamaaya aavaasavyavasthayennu bhooribhaagam rekhakalum soochippikkunnu. uyaram niyanthrikkunna niyanthranangal ithinekkaal kuravaanu. eee samkhyakal heritteju dattaa maanejment sisttathile (hdms) rekhakale adisthaanamaakkiyullathaanu, athupole thanne agfdl ninnulla mattu padanangal uyaram velippeduthunnu (agfd, 2001 ll axus cheytha prasidheekarikkaatha daatta).
aavaasavyavastha.
sonora chabukal ettavum aazhameriyathum valuthumaaya kulangalil svayam kendreekarikkunnu, kaaranam avaa kooduthal sthirathayullavayaanu, ithu avarude kaumaarakkaarkk sthiramaaya anthareeksham anuvadikkunnu. muttakal kuzhikkanum vettakkaaril ninnu samrakshikkanum avar eee valia kulangalude manaltheerangal upayogikkunnu. jala, bhouma praanikaleyum valia kulangalile valia ozhukunna aalgakaleyum avaa bhakshikkunnu. ennirunnaalum varalchaa kaalaghattangal avare aazhathilulla aruvikalil ninnu aazhamillaatha kulangalilekku nirbandhitharaakkum.
punarnirmmaanam.
1973ll minkley nadatthiya padanangale adisthaanamaakki varshathile vasanthakala maasangalude thudakkathilaanu muttayidal saadhaaranayaayi sambhavikkunnath. novemberil sikkamore kreekkilum rioo balipeetathilum laarvakalum praayapoorthiyaakaathavum kandethiyittundu, ithu soochippikkunnathu sonora chabukal vasanthakala maasangalil (hendrickson juverus-romero 1990) muttayidunnathil parimithappedunnilla ennaanu. mikka purushanmaarum valare athishayokthiparamaaya varnna paattenukal chithreekarikkunnathil sakthamaaya laingika thiranjeduppu nadannathaayi thonnunnu. kooduthal abhikaamyamaaya prajnana aanthumbikal avayude inacheral vijayam urappakkunnathinaayi chirakukalil thilakkamulla chuvapp, ooranchu paattenukal vikasippicheduthittundu. vasanthakala, venalkkaala mazhakalkku sesham (bell 1984) varnna paattenukal undaakunnuvennum abhipraayappedunnu.
samrakshanam.
1988ll vamshanaashabheeshani neridunna jeevikalude pattikayil ulppeduthiya eee inam, avayude ennam veendedukkaan sramikkunna niravadhi padhathikalundu. sikkamore, penasco creak ennivayude aavasa mekhalakal nirnaayaka nilayilaanu, athaayath eee pradeshangal eathenkilum tharatthilulla edapedalukalo malsyabandhanamo karsanamaayi nirodhichittundu. 12 meter repariyan athirthi mekhalayum undu, ithu eee aruvikalilekkulla praveshanam kooduthal niyanthrikkunnu. khananam, mechil, vinodam thudangiya manushya pravartthanangalum videsha taxayude varavukalum sicamore kreekkine valareyadhikam parishkarichittundu. eee gadakangalellaam eee inathinte thakarchayilekku nayikkunnu. sonora chabbukalude sahishnuthayude paridhikkullil maathramullathaan saikkamor, athinaal ithu eee vellathilekku poornnamaayum ottappeduthiyittund, nirbandhithamaayi purathupoyaal, athu veendedukkaan evideyum illa (hendrickson juverus-romero 1990). neertthadangalude avastha kurayunnathum varalchayude avastha vardhikkunnathum eee vividha manushya aswasthathakale kooduthal vashalaakkunnu, ithu aathyanthikamayi eee inathinte vamshanaashathilekku nayichekkaam. vamshanaashabheeshani neridunna pattikayilulla bhooribhaagam arizona malsyangaludeyum kaaryatthilennapole thaddesheeyamallaatha "pacha sanfishukalude" vettayekkurichum aashankayundu. vamshanaashabheeshani neridunna eee jeevivarggathinte poornnamaaya veendedukkal kaanunnathin neertthadatthinte sthirathaykkoppam eee avasthakalellaam mattanam.

