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Effect of Exhaustive Exercise on the Swimming Capability and Metabolism of Juvenile Siberian Sturgeon
Author(s) -
Cai L.,
Johnson D.,
Mandal P.,
Gan M.,
Yuan X.,
Tu Z.,
Huang Y.
Publication year - 2015
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1080/00028487.2015.1007163
Subject(s) - sturgeon , juvenile , respirometer , anaerobic exercise , zoology , biology , fish <actinopterygii> , metabolic rate , fishery , ecology , anatomy , endocrinology , respiration , physiology
This study investigated the effect of exhaustive exercise on the swimming performance of Siberian Sturgeon Acipenser baeri and on the time required for recovery. Critical swimming speed ( U crit ), maximum metabolic rate (MMR), speed coefficient ( c ), and excess postexercise oxygen consumption (EPOC) were measured on three groups of juvenile sturgeon by stepped velocity tests at 20°C in a fish respirometer. After a recovery period of 1 h (group 1), 1 d (group 2), or 1 week (group 3), the four parameters were determined a second time and the results compared. The U crit of the sturgeon was 3.26 ± 0.11 body lengths per second (mean ± SE). After a 1 h recovery period, U crit was 78% of its initial value and complete recovery required slightly more than 1 d. Recovery of MMR followed the same pattern. The speed exponent ( c ) was approximately 1.0, indicating that the Siberian Sturgeon is an efficient swimmer; swimming efficiency decreased after exhaustive exercise and the effect appeared to last for at least 1 week. Exhaustive exercise strongly hindered anaerobic swimming in Siberian Sturgeon for more than an hour.