Acquired Recognition of Predator Odour in the European Minnow (Phoxinus phoxinus)

摘要: Naive European minnows (Phoxinus phoxinus) do not show a fright reaction when they first encounter the odour of natural predator (the pike: Esox lucius) or non-piscivorous exotic (tilapia: Tilapia mariae). A conditioned response to both these odours will however develop if experience them in potentially dangerous situation, for example, conjunction with Schreckstoff, ostariophysian alarm pheromone. Although respond tilapia is reduced. This suggests that constraint on learning involved. Olfactory recognition particularly valuable detecting predators hunt conditions where visibility poor.