Behaviour of proactive and reactive tilapia Oreochromis niloticus in a T-maze

摘要: Knowing that individuals with different coping strategies can exhibit behaviours in associative learning, we evaluated the learning capacity of proactive and reactive tilapia fish. Trained untrained, reactive, were subjected to a T-maze their behaviour observed while searching for food using landmarks. Forty-four first divided into groups (173.2 s ± 22.0) based on time taken leave shelter Novel Environment test. In Phase 1, fish trained individually search T-maze. Food (stimulus) was placed randomly at one side gravel (neutral stimulus) used mark location. The starting area (latency) spent food, recorded. 2, effect untrained joining evaluated. Qualitative observations, such as interactions between subjects, Latency decreased significantly successive trials (latency time: Kruskal-Wallis test H = 68.26; df 9, p < 0.01; 58.16; 0.01 – all fish; latency 54.67; proactive; 21.10; reactive; 48.4, 47, reactive), analysed together, separately). Proactive had shorter find than (Mann-Whitney U 17535.0, N1 158, N2 90, 0.05), well (U 16553.0, 0.05). When animals individuals, irrespective strategy, behaved aggressively lost focus food. Among pairs, fed majority trials. conclusion, adapted more quickly to, efficiently in, This raises possibility efficient strategies, differences speed tool developing low stress husbandry systems.