Northwest Fisheries Science Center

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Document Type: Journal Article
Center: NWFSC
Document ID: 6364
Title: Dose/dose-rate responses of shrimp larvae to UV-B radiation
Author: David M. Damkaer, Douglas B. Dey, G. A. Heron
Publication Year: 1981
Journal: Oecologia
Volume: 48
Issue: 2
Pages: 178-182

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 4-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.

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