title: Dose/dose-rate responses of shrimp larvae to UV-B radiation.
abstract: Previous work indicated dose-rate thresholds in the effects of UV-B on the near-surface larvae of three shrimp species. Additional observations suggest that the total dose response varies with dose-rate. Below 0.002 Wm-2[DNA]irradiance no significant effect is noted in activity, development, or survival. Beyond that dose-rate threshold, shrimp larvae are significantly affected if the total dose exceeds about 85 Jm-2[DNA]. Predictions cannot be made without both the dose-rate and the dose.These dose/dose-rate thresholds are compared to four-year mean dose/dose-rate solar UV-B irradiances at the experimental site, measured at the surface and calculated for 1 m depth. The probability that the shrimp larvae would receive lethal irradiance is low for the first half of the season of surface occurrence, even with a 44% increase in damaging UV radiation.
authors.affiliation: University of Washington WB-10, 98195, Seattle, WA, USA.|National Marine Fisheries Service/NOAA, 98353, Manchester, WA, USA.
authors.forename: David M
authors.initials: DM
authors.lastname: Damkaer
authors.affiliation: National Marine Fisheries Service/NOAA, 98353, Manchester, WA, USA.
authors.forename: Douglas B
authors.initials: DB
authors.lastname: Dey
authors.affiliation: University of Washington WB-10, 98195, Seattle, WA, USA.
authors.forename: Gayle A
authors.initials: GA
authors.lastname: Heron