. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CORBICULA AERIAL EXPOSURE 257. Overall Closed Mantle Fluid exposed expelled Figure 4. Mean rates of water loss for Corhicula Iliiniineii at five relative humidity treatments (5%, 33%, 53%, 75%.. and 95%) and three temperatures (I5°C, 25°C, and 35°O. Rates of water loss are divided into four behavioral categories (overall average, with closed valves, with mantle exposed, and after fluid expulsion from the mantle cavity; see text). The letters A. B. and C refer to results of Duncan's multiple range tests comparing rates be


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CORBICULA AERIAL EXPOSURE 257. Overall Closed Mantle Fluid exposed expelled Figure 4. Mean rates of water loss for Corhicula Iliiniineii at five relative humidity treatments (5%, 33%, 53%, 75%.. and 95%) and three temperatures (I5°C, 25°C, and 35°O. Rates of water loss are divided into four behavioral categories (overall average, with closed valves, with mantle exposed, and after fluid expulsion from the mantle cavity; see text). The letters A. B. and C refer to results of Duncan's multiple range tests comparing rates between temperatures, within a relative humidiu and behavioral category. Categories marked with dissimilar letters de- note significant differences (P < ). The letters W, X, Y, and Z refer to results of Duncan's multiple range tests comparing rates between relative humidity treatments, within a temperature and behavioral cat- egory. Categories with dissimilar letters denote significant differences (P < ). The asterisks denote significant differences (P ) relative humidity effect at any temper- ature. No significant differences were found between rates of water loss when valves were closed and rates when man- tle edge tissue was exposed at 95% RH at any of the tem- peratures (Fig. 4). At 15°C when the mantle edge was ex- posed, the water loss rate was significantly higher than the rate at 53% RH when valves were closed, whereas at 25°C the loss rate when mantle was exposed was signifi- cantly higher at 75% RH. Rates of water loss when closed and when exposing mantle tissues were not significantly different at 35°C. at which temperature the behavior of exposing mantle tissues is non-existent at relative hu- midities below 53%, and is uncommon even at higher humidities. In most cases rates when fluid was expelled were significantly (P shell length, and ME (mantle edge exposure behavior) is shown in Table IIA. Relative humidity had a significant (P < )


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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology