Model
Digital Document
Publisher
Florida Atlantic University
Description
This study was designed to determine the sensory basis
of host location by the pearlfish, Carapus bermudensis
(Jones). Forty-eight hour aquaria observations and
examination of stomach contents revealed that pearlfish
emerge, probably nightly, shortly after dark and feed
on small crustaceans. Experiments in a two-way choice
apparatus demonstrate that pearlfish locate the host
holothurian, Actinopyga agassizi (Selenka), by olfaction.
Vision and rheotaxis are not used as alternative methods
of' host location or in conjunction with olfaction. These
findings are analyzed in terms of the present knowledge
of sensory competence in fish.
of host location by the pearlfish, Carapus bermudensis
(Jones). Forty-eight hour aquaria observations and
examination of stomach contents revealed that pearlfish
emerge, probably nightly, shortly after dark and feed
on small crustaceans. Experiments in a two-way choice
apparatus demonstrate that pearlfish locate the host
holothurian, Actinopyga agassizi (Selenka), by olfaction.
Vision and rheotaxis are not used as alternative methods
of' host location or in conjunction with olfaction. These
findings are analyzed in terms of the present knowledge
of sensory competence in fish.
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