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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 19 (1993), S. 623-633 
    ISSN: 1573-1561
    Keywords: Olfaction ; chemoreception ; solitary chemosensory cells ; predator recognition ; alarm pheromone ; Schreckstoff ; fathead minnow ; Pimephales promelas ; northern pike ; Esox lucius
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Solitary fathead minnows (Pimephales promelas) were rendered anosmic and exposed to chemical stimuli from a predatory northern pike (Esox lucius) to determine the role of olfaction in the minnow's ability to recognize predators on the basis of chemical stimuli. Anosmic fish did not respond to the pike stimuli with a typical fright reaction, while control fish, with intact olfactory receptors, did. These results demonstrate that the olfactory system is necessary for the ability of fathead minnows to recognize northern pike as a predator and that the gustatory and single-celled chemosensory systems are not sufficient for this recognition in the absence of olfactory input. Olfactory impairment was behaviorally confirmed by exposing minnows to alarm substance (Schreckstoff).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-1561
    Keywords: Gammarus lacustris ; alarm pheromone ; kairomone ; predator avoidance ; antipredator behavior ; Esox lucius ; Aeshna eremita
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract We exposed the freshwater amphipod Gammarus lacustris, to chemical stimuli from injured conspecifics and to chemical stimuli from two types of natural predators: dragonfly larvae (Aeshna eremita) and northern pike (Esox lucius). Exposure to all three stimuli caused G. lacustris to reduce significantly its level of activity relative to activity recorded in response to a distilled water control. The similarity in responses to chemicals associated with predators and to injured conspecifics suggests the presence of an alarm pheromone within the body tissues of G. lacustris. In response to chemical stimuli from pike, G. lacustris tended to reduce its time in the water column and spend more time near the bottom of the test aquaria. However, no such trend was apparent in response to chemical stimuli from dragonfly larvae. The differences in response to chemical stimuli from pike and larval dragonflies suggest that G. lacustris does not have a rigid behavioral response to predation risk; instead, antipredator behavior may be modified to maximize avoidance of predators that are active in different microhabitats.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-1561
    Keywords: Predation risk ; area avoidance ; brook stickleback ; Culaea inconstans ; fathead minnow ; Pimephales promelas ; alarm pheromone ; Schreckstoff
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Brook stickleback (Culaea inconstans) share habitat and predators with cyprinid species, and they exploit the alarm pheromone of fathead minnows (Pimephales promelas) to avoid areas of high predation risk. In this field experiment, we measured the retention and duration of area avoidance by brook stickleback from areas marked with alarm pheromone of fathead minnows. Area avoidance was greatest during the first 2 hr after the source of the alarm pheromone was removed (P〈0.05), but after 4 hr, area use was not significantly different from premarking levels. This study shows that brook stickleback: (1) use the alarm pheromone of fathead minnows to avoid high risk areas, (2) continue to avoid locations associated with predation risk after the source of the pheromone has gone, and (3) avoid risky areas temporarily, and resume use of risky areas after 2–4 hr. This behavioral response by stickleback to minnow alarm pheromone could serve to minimize risk of predation.
    Type of Medium: Electronic Resource
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