Author:
Macdonnell A. J.,Blake R. W.
Abstract
Observations were conducted to determine rheotaxic behavior in Otocinclus sp. (Loricariidae). Rheotaxis in Otocinclus sp. (standard length 2.29–3.34 cm) occurs in three stages; (i) resting at zero water velocity; (ii) adhesion when water velocities are increased to about 10 cm s−1; and (iii) clamped position when slipping occurs (between 19 and 35 cm s−1). Rheotaxis also occurred on rougher surfaces without displacement for water velocities up to 70 cm s−1. Slipping velocities are maximized by morphological and behavioral characteristics that allow for the maintenance of position in rapidly moving water.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
16 articles.
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