Turkish Journal of Fisheries and Aquatic Sciences
2021, Vol 21, Num, 6 (Pages: 275-281)
The Effect of Ploidy on Growth and Feeding Pattern of Diploid and Triploid Turbot Scophthalmus maximus Under Communal Rearing Condition
Ilhan Aydin 1
1 General Directorate of Agricultural Research and Policies, Ankara, Turkey
DOI :
10.4194/1303-2712-v21_6_02
Viewed :
2351
-
Downloaded :
1566
Triploidy induction is a useful tool to produce sterile fish that prevents interbreeding
of farmed fish with wild counterparts. In this study, growth performance and feed
conversion rates of 12-months old diploid and triploid turbot that reared both
communally and separately for 16 months at constant water temperature determined.
At the end of the experiment, diploid, triploid, and communally reared groups reached
an average weight of 672.4±21.0 g, 659.2±25.3 g and 660.5±12.0 g, respectively. Any
significant differences were not observed in the weight of separately reared diploid
and triploid turbot groups. In contrast, triploid fish in the communal group were
significantly heavier than diploids at the end of the rearing period. The feed conversion
rate of the ploidy group did not show any significant difference between groups. The
highest mean specific growth rate was observed in the triploids in communal groups,
whereas the diploids in communal groups had the lowest mean specific growth rate.
The weight and length gain rates of the groups were similar. Diploid turbot growth
appeared to be negatively affected by communal ploidy rearing. The results of the
present study indicate that triploid turbot farm escapees may be advantageous in
terms of growth in nature.
Keywords :
Turbot, Ploidy, Growth performance, Competitivity, Behaviour