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Critical oxygen tension increases during digestion in the perch Perca fluviatilis
Author(s) -
Thuy N. H.,
Tien L. A.,
Tuyet P. N.,
Huong D. T. T.,
Cong N. V.,
Bayley M.,
Wang T.,
Lefevre S.
Publication year - 2010
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2009.02533.x
Subject(s) - perch , biology , oxygen tension , oxygen , digestion (alchemy) , hypoxia (environmental) , zoology , fishery , aquaculture , fish <actinopterygii> , ecology , chromatography , chemistry , organic chemistry
Oxygen uptake () and critical oxygen tension ( P crit ) were measured in resting perch Perca fluviatilis that were either fasting or digesting. Digestion caused to double (from 61 to 117 mg O 2 kg −1 h −1 ) and was associated with a rise in P crit (from 3·4 to 4·9 kPa), showing that the animal's digestive state must be considered when assessing the effect of hypoxia in natural conditions, and when defining optimal oxygen conditions in aquaculture.