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    ICHTYOFAUNA OF THE PRANČEVIĆI LAKE RESERVOIR ON THE RIVER CETINA - III Cyprinidae

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    Istraživanja ciprinidnih vrsta riba provedena su sezonski u tijeku godine 1985. i 1986. u hidroakumulaciji Prančevići i u toku rijeke Cetine do Trilja. Podaci o ostalim porodicama izneseni su u radovima H a b e k o v i ć , 1993. i 1994. Ciprinidne vrste riba uključuju: ilirskog klena (Leuciscus illyricus Heck. et Kn.), cetinsku uklivu (Leuciscus ukliva Heck.), primorsku jelšovku (Leuciscus souffia muticellus Bon.), oštrulju (Aulopyge hügeli Heck.) i srebrnog šarana (Carassius auratus gibelio Bloch). Rezultati istraživanja izneseni su u tabl. 1. do 11. Rast ilirskog klena vro je dobar i bolji u odnosu na uzvodna i nizvodna područja Cetine. Cetinska ukliva raste dobro. Primorska jelšovka i oštrulja imaju tendenciju širenja u ovom području. Prisutnost je srebrnog karasa štetna i može imati dalekosežne negativne posljedice na ihtiofaunu ovog područja, osobito na endeme. Ihtiomasa salmonidnoga riječnog dijela Cetine varira od 25 do 38 kg/ha, a koeficijent je P/B 45%. Hidroakumulacija Prančevići hladnovodno je oligotrofno jezero prijelaznog tipa SALVELINUS - COREGONUS, više naglašeno COREGONUS ihtiomase 15 do 20 kg/ha. Jezero bi moglo producirati veću ihtiomasu od postojeće.Investigations of cyprinidae fish species were carried out during the seasons of 1985 and 1986 in the Prančevići reservoir lake and in the river Cetina up to Trilja. Data on the remaining families have been recorded by Habeković in 1993 and 1994. Cyprinidae fish species include: Leuciscus illyricus (Heck. and Kn.), Leuciscus uklivcz, (Heck), Leuciscus souffia muticellus (Bon.), Aulopyge hugeli (Heck.) and Carassius auratus gibelio (Bloch). Results of investigations are presented in Tables 1 and 2. The growth of the Leuciscus illyricus is very good and better in relation to the upstream and downstream area of Cetina. The L. ukliva grows well. The L. s. muticellus and A. Hugeli tend to spread in this area. The presence of the A. a. gibelio is harmful and can have a long-term negative effect on the ichthyofauna of this area, especially on endems. The ichtyomass of the salmonid river part of the Cetina varies from 25 to 38 kg/ha, with a coefficient of 45% for P/B. The Prančevići reservoir is a cold water oligothropic lake of the Salvelinus-Coregonus type, more expressed Coregonus ichthyomass of 15 to 25 kg/ha. The lake is able to produce a greater ichthymass than it does now
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