Effects of zinc on the cardiac and ventilatory rhythms of rainbow trout (Salmo gairdneri, Richardson) and their responses to environmental hypoxia

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Water Res.; (United States)

DOI:https://doi.org/10.1016/0043-1354(77)90007-0· OSTI ID:5061028

Hughes, G M; Adeney, R J

Recordings were made of the cardiac and ventilatory rhythms of rainbow trout subjected to solutions of 40 and 10 ppM zinc in an experimental circulation. The higher concentration produces clearly-defined increases in ventilatory and coughing frequency and a decrease in heart rate; the percentage coupling between the two rhythms usually increased. During exposure to 10 ppM added zinc the effects are not so readily discernible but are comparable in type. The addition of 10 ppM zinc has a significant effect on the responses of rainbow trout to hypoxia before and after this treatment. It is concluded that zinc interferes with some of the mechanisms involved in the uptake of oxygen at the gills and consequently can significantly affect the ability of fish to respond to the additional stress of oxygen lack in its environment.

• Research Organization: Univ. of Bristol, England
• OSTI ID: 5061028
• Journal Information: Water Res.; (United States), Journal Name: Water Res.; (United States) Vol. 11:12; ISSN WATRA
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
ANOXIA
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
BIOLOGICAL STRESS
CARDIOVASCULAR SYSTEM
CRYOGENIC FLUIDS
ELEMENTS
FISHES
FLUIDS
GILLS
METALS
NONMETALS
OXYGEN
RESPIRATION
RESPIRATORY SYSTEM
TROUT
VERTEBRATES
ZINC