Toxicity of chlorine to juvenile spot, Leiostomus xanthurus

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

DOI:https://doi.org/10.1016/0043-1354(77)90010-0· OSTI ID:5060990

Middaugh, D P; Crane, A M; Couch, J A

The sensitivity of juvenile spot, Leiostomus xanthurus, to total residual chlorine (TRC) in flowing sea-water was investigated. Incipient LC/sub 50/ bioassays, histopathology, avoidance tests and the combined effect of thermal stress and TRC were used to assess sensitivity. Estimated incipient LC/sub 50/ values were 0.12 mg l/sup -1/ TRC at 10/sup 0/C and 0.06 mg l/sup -1/ TRC at 15/sup 0/C. Histological examination of spot used in the incipient LC/sub 50/ bioassay at 15/sup 0/C and sacrificed while alive indicated pseudobranch and gill damage occurred in individuals exposed to a measured TRC concentration of 1.57 mg l/sup -1/. Spot exposed to lower concentrations of TRC, 0.02 to 0.06 mg l/sup -1/ at 15/sup 0/C and sacrificed alive showed no consistent tissue damage. Spot demonstrated temperature dependent avoidance responses to TRC. At 10/sup 0/C a concentration of 0.18 mg l/sup -1/ was required for significant (X/sup 2/, P less than 0.05) avoidance; at 15 and 20/sup 0/C, spot showed significant avoidance of TRC concentrations as low as 0.05 mg l/sup -1/. Simultaneous exposure of spot to thermal stress (5, 10 or 13/sup 0/C above the acclimation temperature of 15 C) at measured TRC concentrations of 0.05 to 0.07 and 0.34 to 0.52 mg l/sup -1/ demonstrated a significant, (X/sup 2/ with Yates correction, P less than 0.05) increase in sensitivity to TRC with increased temperature and exposure times for some of the groups tested.

• Research Organization: Environmental Protection Agency, John's Island, SC
• OSTI ID: 5060990
• 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
AQUATIC ORGANISMS
BIOASSAY
BIOLOGICAL STRESS
CHLORINE
ELEMENTS
FISHES
GILLS
HALOGENS
HISTOLOGY
NONMETALS
RESPIRATORY SYSTEM
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
TOXICITY
VERTEBRATES