Growth and Weight-Length Relationship of Burbot Lota lota (L.) (Lotidae) in the Danube River at Backa Palanka (Serbia)
Аутори:Smederevac-Lalic, Marija M.
Skoric, Stefan B.
Visnjic-Jeftic, Zeljka V.
Đikanović, Vesna D.
Mickovic, Branislav M.
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The basic life history data of the burbot inhabiting the Danube River at the Baoka Palanka locality were studied. Totally, 124 specimens (45.2\% males, 48.4\% females and 6.4\% of undeterminable sex) were collected from commercial landings. The total length and weight ranges were 22.5-63 cm and 92-1709 g, respectively, while the age range was 1-6 years (otolith readings). For each age class, there were no differences in the average length and weight between sexes. The average length-at-age and weight-at-age were 26.97 cm, 32.35 cm, 38.34 cm, 52.5 cm and 139.8 g, 225.2 g, 371.8 g and 1041 g for the age classes 1, 2, 3 and 6, respectively. The weight-length relationship was described as W = 0.01 TL2.861 (r(2) = 0.9566). The von Bertalanffy growth parameters were L-infinity = 66.58 cm, k = 0.17, t(0)= -2.01, and the phi-prime index was calculated as Phi = 2.88. The obtained data were compared with available results from elsewhere.
Кључне речи:Danube River; burbot; weight-length relationship; growth
Извор:Acta Zoologica Bulgarica, 2015, 67, 1, 97-103