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  • Daily otolith increments an...
    Durovic, M; Pesic, A; Regner, S; Joksimovic, A; Mandic, M; Kasalica, O; Ikica, Z; Krpo-Cetkovic, J

    Acta Adriatica, 01/2012, Volume: 53, Issue: 3
    Journal Article

    Daily growth rate of juvenile anchovy, Engraulis encrasicolus (Linnaeus, 1758), was estimated in the south-eastern Adriatic Sea. Samples were taken by a commercial beach seine net and the size range of 100 sampled individuals was 5.0-6.8 cm total length. Age was estimated by counting growth increments of sagittal otoliths, which are formed with daily periodicity. Estimated ages were 41 - 90 days and hatch date for each age class was back-calculated from the date of capture. The calculated instantaneous growth rate was 0.41 mm day super(-1). Fish size at metamorphosis from late larva to juvenile was estimated to 3.2 cm total length. Parameters of the von Bertalanffy's growth function were L sub( proportional to ) = 10.41 and K = 3.36.Original Abstract: Dnevna stopa rasta juvenilnog incuna, Engraulis encrasicolus (Linnaeus, 1758), procijenjena je u jugoistocnom Jadranu. Uzorci su sakupljani komercijalnom obalnom mrezom potegacom, a raspon velicine kod 100 uzorkovanih jedinki iznosio je 5.0-6.8 cm ukupne duzine. Dob je procijenjena brojenjem dnevnih narastajnih prstenova na sagitalnim otolitima. Procijenjena starost kolebala je izmedu 41-90 dana, a nadnevak izvaljivanja licinke za svaki starosni razred bio je naknadno izracunat prema datumu ulova. Izracunata trenutna stopa rasta iznosila je 0.41 mm dan super(-1). Velicina ribe za vrijeme metarmofoze iz kasnog stadija licinke u juvenilni stadij procijenjena je na 3.2 cm ukupne duzine. Parametri u von Bertalanffy-jevoj jednadzbi rasta bili su L sub( proportional to ) = 10.41 i K = 3.36.