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Swimming Performance and Metabolism of Cultured Golden Shiners
Author(s) -
Beecham Rachel V.,
Pearson Philip R.,
LaBarre Susan B.,
Minchew C. Douglas
Publication year - 2009
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1577/a07-079.1
Subject(s) - respirometry , zoology , biology , metabolic rate , respirometer , metabolism , energetics , specific dynamic action , oxygen , anatomy , respiration , ecology , endocrinology , chemistry , biochemistry , organic chemistry
Abstract Swimming performance and metabolism of golden shiners Notemigonus crysoleucas were examined by use of swim tunnel respirometry. The oxygen consumption and tail beat frequency (TBF) at various swimming speeds, an estimation of the standard metabolic rate (SMR), and the critical swimming speed ( U crit ) were determined for golden shiners that were tested in 10 groups of 5 individuals each. Oxygen consumption and TBF both increased as swimming speed increased. The mean U crit for the first, second, and third individual to fatigue in each group was 38.0, 41.7, and 47.2 cm/s, respectively. The SMR was estimated at 131 mg O 2 ·kg −1 ·h −1 for fish averaging 5.3 g. The active metabolic rate averaged 150 ± 14 mg O 2 ·kg −1 ·h −1 (mean ± SE) at 10 cm/s, increased to 163 ± 20 mg O 2 ·kg −1 ·h −1 at 30 cm/s, and peaked at 177 ± 19 mg O 2 ·kg −1 ·h −1 at 50 cm/s. Total aerobic cost of transport (0.36 cal·g −1 ·km −1 ; i.e., the metabolic cost of swimming) and net cost of transport (0.08 cal·g −1 ·km −1 ) were lowest between 30 and 40 cm/s.