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Blood Respiratory Changes in Common Carp Exposed to a Lethal Concentration of Rotenone
Author(s) -
Fajt James R.,
Grizzle John M.
Publication year - 1998
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 - 10.1577/1548-8659(1998)127<0512:brcicc>2.0.co;2
Subject(s) - cyprinus , rotenone , oxygen , carp , respiratory system , respiration , carbon dioxide , zoology , fish <actinopterygii> , partial pressure , biology , chemistry , common carp , fishery , toxicology , anatomy , ecology , biochemistry , organic chemistry , mitochondrion
Common carp Cyprinus carpio were exposed to a lethal concentration of rotenone (0.1 mg/L), and blood was sampled after 2, 7, and 21 min. Exposure times were selected to correspond with changes in behavior: after 2 min fish started swimming to the surface, after 7 min equilibrium was lost, and after 21 min fish sank to the bottom. Fish died 35–40 min after exposure to rotenone. Blood oxygen partial pressure showed a dramatic 10‐fold increase compared with control values after 21 min, while pH decreased and partial pressure of carbon dioxide did not change. Increases in blood oxygen content, which were probably related to blockage of cellular oxygen use, indicate that branchial uptake of oxygen was not significantly impaired.