Record Display for the EPA National Library Catalog


Main Title Critical Thermal Maximum of Juvenile Spot, Leiostomus Xanthurus, Lacepede.
Author Bridge, David Wilder ;
CORP Author North Carolina Water Resources Research Inst., Raleigh.
Year Published 1971
Report Number Rept. no. ;43; OWRR-B-004-NC; 11409,; B-004-NC(9)
Stock Number PB-202 370
Additional Subjects ( Fishes ; Heat tolerance) ; Temperature ; Salinity ; Acclimatization ; Tolerances(Physiology) ; Growth ; Age ; Seasonal variations ; Water pollution ; Heat ; Electric power plants ; Thermal pollution ; Spot(Fish) ; Leiostomus Xanthurus ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB-202 370 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 51p
The Critical Thermal Maximum (CTM) of juvenile spot was determined throughout their first growing season from the time they entered the oligohaline environment until they left it. Spot were acclimated in the laboratory to combinations of temperature and salinity levels prior to the CTM tests. When the data were analyzed by multiple regression, acclimation temperature, acclimation salinity, weight, weight squared, and length were all found to be significantly important influences on the CTM of juvenile spot. Temperature was the most important influence on CTM with an R2 value of 0.92. Salinity was the least important with an R2 of 0.001, and weight, weight squared and length were all intermediate influences with R2 values of about 0.18. Response surfaces were generated from the prediction equation showing the acclimation temperature necessary to produce a fixed CTM for juvenile spot. These reveal that CTM increases with size (either length or weight) and age during the nursery period. The increase in CTM was somewhat greater between summer and fall sized spot than between spring and summer sized spot. The CTM increased as salinity increased. (WRSIC abstract)