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The critical swimming speed of Iberian barbel Barbus bocagei in relation to size and sex

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The swimming capacity of Barbus bocagei was measured with the critical swimming speed (Ucrit) standard test in a modified Blažka-type swim tunnel. Sixty B. bocagei were tested and they exhibited a mean ±s.d. Ucrit of 0·81 ± 0·11 m s−1 or 3·1 ± 0·86 total lengths per second (LT s−1). Sex had no effect on Ucrit but significant differences were found between the swimming performance of fish with distinct sizes.

Keywords: Cyprinidae; Ucrit; maximum aerobic capacity; swim tunnel

Document Type: Research Article


Affiliations: Institute of Oceanography, Centre of Oceanography, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal

Publication date: November 1, 2008

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