Abstract
An experiment was designed to investigate Lake Sturgeon (Acipenser fulvescens) responses to alarm cues and the ontogeny of anti-predator behaviour in response to alarm cues in larval and juvenile sturgeon. A method for alarm cue preparation in larval sturgeon using full-body homogenate and juvenile sturgeon using homogenized skin is described. Larval sturgeon in tanks exposed to alarm cues were shown to exhibit a dramatic increase in activity (e.g. an escape response) (t25 = 4.95, P < 0.0001), whereas juvenile sturgeon in tanks exposed to alarm cues exhibit only marginally significant escape responses (t37 = 2.02, P = 0.051). Alarm cues may be employed in essential life-skills training for sturgeon, which may prove to be instrumental for their recovery.
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