. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. OPOSSUM SHRIMP TOLERANCES 19 tests witli the lowest acclimation temperature, and the lowest increases were in those tests with the higliest acclimation temporatui'e. Tlie period of t('ni])eratnre adjustment in the jars was approximately 1 hr for a 20 F rise with proportionally shorter times for lesser temperature rises and proportionally longer times for higher rises. Survival was measured after 48 hr. For each acclimation group, tlie
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. OPOSSUM SHRIMP TOLERANCES 19 tests witli the lowest acclimation temperature, and the lowest increases were in those tests with the higliest acclimation temporatui'e. Tlie period of t('ni])eratnre adjustment in the jars was approximately 1 hr for a 20 F rise with proportionally shorter times for lesser temperature rises and proportionally longer times for higher rises. Survival was measured after 48 hr. For each acclimation group, tlie mean percentages surviving at each test condition were plotted against their respective test temperatures. A line was fitted to the points, by eye, and the LDr,o estimated by in- terpolation. Experimental ,o values were plotted against llicir correspond- ing acclimation temperatures and a line fitted to the points using the method of least squares. The upper letlial temperature is the point on the line where the acclimation temperature equals the lethal tempera- ture (Figure 1).. '50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 Acclimation Temperature in T FIGURE 1. Estimation of upper lethal temperature for N. awafschensis. Rapid Temperature Rise For each test, 100 N. awafschensis and 775 ml of water at acclimation temperature were poured into a battery jar. An equal volume of warmer water was added over a 10-sec period. At the same time the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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