DUŽINSKO-MASENI ODNOS KOD EUROPSKE JEGULJE Anguilla anguilla (Linnaeus, 1758) IZ ŠEST KRŠKIH RIJEKA JADRANSKOG SLIVA U HRVATSKOJ

• Main Authors: Piria, Marina; University of Zagreb, Faculty of Agriculture, Department of Fisheries, Beekeeping, Game Management and Special Zoology, Svetošimunska 25, 10000 Zagreb, Croatia; [e-mail], Šprem, Nikica; University of Zagreb, Faculty of Agriculture, Department of Fisheries, Beekeeping, Game Management and Special Zoology, Svetošimunska 25, 10000 Zagreb, Croatia, Tomljanović, Tea; University of Zagreb, Faculty of Agriculture, Department of Fisheries, Beekeeping, Game Management and Special Zoology, Svetošimunska 25, 10000 Zagreb, Croatia, Slišković, Merica; University of Split, Faculty of Maritime Studies, Zrinsko-Frankopanska 38, 21000 Split, Croatia, Jelić Mrčelić, Gorana; University of Split, Faculty of Maritime Studies, Zrinsko-Frankopanska 38, 21000 Split, Croatia, Treer, Tomislav; University of Zagreb, Faculty of Agriculture, Department of Fisheries, Beekeeping, Game Management and Special Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
• Format: Text
• Language: English
• Published: Faculty of Agriculture, University of Zagreb 2014
• Subjects: dužinsko-maseni odnos; europska jegulja; CPUE; alometrijski rast; krške rijeke; Jadransko more; length-weight relationship; European eel; allometric growth; karst rivers; Adriatic Sea; Anguilla anguilla
• Online Access: http://hrcak.srce.hr/119862; http://hrcak.srce.hr/file/177247

Ovo istraživanje donosi prve dostupne podatke o dužinsko-masenom odnosu (LWRs) kod jegulja iz šest krških rijeka u Hrvatskoj. U razdoblju između 2004. i 2007. godine, elektroribolovomje prikupljeno ukupno 380 primjeraka europske jegulje dužine 13,0 – 76,0 cm. Preko 50% ulova činile su jegulje dužine 34,0 cm, dok je ulov primjeraka manjih od 15,0 cm bio neznatan.Vrijednost b LWRs-a kretala se u rasponu između 2,5957 i 2,8155, što ukazuje na negativni alometrijski rast. CPUE (g 100 m-1) naglo je pao tijekom razdoblja uzorkovanja, vjerojatno zbog promjena u okolišu, ali i zbog globalnog nestanka ove vrste. This study presents the first references available for the length–weight relationships(LWRs) of eels from six karstic rivers in Croatia. A total of 380 European eels 13.0–76.0 cm long were collected by electro-fishing from six karst catchments of the Adriatic basin between 2004 and 2007. Eels of34.0 cm in length dominated (over 50%) the catches, while abundance of eel smaller than 15.0 cm was very low. Value b of LWRs remained within the range between 2.5957 and 2.8155, which indicates a negative allometricgrowth. CPUE (g 100 m-1) rapidly declined during the period of sampling, probably due to environmental changes, but also due to global disappearance of this species.