Author/Authors :
Kalous, L. Czech University of Life Sciences Prague - Faculty of Agrobiology, Food and Natural Resources - Department of Zoology and Fisheries, Czech Republic , Daněk, T. Czech University of Life Sciences Prague - Faculty of Agriculture, Food and Natural Resources, Czech Republic , Kopecký, O. Czech University of Life Sciences Prague - Faculty of Agriculture, Food and Natural Resources, Czech Republic , Petrtýl, M. Czech University of Life Sciences Prague - Faculty of Agriculture, Food and Natural Resources, Czech Republic
Abstract :
In the present study, we aimed to evaluate the effects of intraperitoneal tagging with dummy transmitters on growth of juvenile European catfish (Silurus glanis L.) within a period of 75 days kept in indoor condition. The initial mass of juveniles (mean ± SD) was 236.5 ± 21.2 g. We compared growth by analysing specific growth rate (SGR) and the slopes of the growth curves between control individuals and those of experimentally tagged (n = 6 per group). Body mass was increased in both control and experimentally tagged fish. There was no significant difference in SGR between tagged and untagged fish; 0.26 ± 0.11 % day-1 vs. 0.38 ± 0.12 % day-1 respectively. These results suggest that the telemetry studies of juvenile European catfish to be relevant and unbiased.
Keywords :
SGR , intraperitoneal tagging , ichthyology , fish , Silurus glanis
