Record Display for the EPA National Library Catalog


Main Title Effects of Solar and Artificial Ultraviolet-B Radiation on Larval Northern Anchovy, 'Engraulis mordax'.
Author Hunter, John R. ; Kaupp, Sandor E. ; Taylor, John H. ;
CORP Author National Marine Fisheries Service, La Jolla, CA. Southwest Fisheries Center.;Corvallis Environmental Research Lab., OR.
Year Published 1981
Report Number EPA-600/J-81-501;
Stock Number PB82-154667
Additional Subjects Radiation effects ; Larvae ; Exposure ; Dosage ; Lethal dosage ; Reprints ; Anchovies ; Engraulis mordax
Library Call Number Additional Info Location Last
NTIS  PB82-154667 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
Northern anchovy larvae were exposed to various amounts of both natural (global solar) and artificial (sunlamps filtered by cellulose triacetate) UV-B energy over a 12-day period. Dosage was determined on the basis of a weighting function for biological effectiveness. The action spectrum on which this biologically effective dose for anchovy mortality is based was developed using broad-band spectroscopy. These experiments indicated that biologically adverse conditions exist near the sea surface. Larvae exposed in shallow containers to global solar UV for 12 days suffered significant UV mortality from Befruary to October. Larvae surviving all solar and artificial UV doses were smaller than those not exposed to UV. The data suggest that larvae in the sea may be subject to some UV-B stress at present. Owing to their seasonality of spawning and vertical distribution, anchovy populations may not be gravely endangered by moderate degrees of stratospheric ozone depletion.