. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Totten • CH'Sler 1 • Ovster 2 • Ch'Ster 3 Bag Temp Figure 1. Internal temperatures of three living oysters (solid lines) at two tidal heights ( m and m at Totten Inlet, Washington) and external temperatures from a temperature probe placed alongside the oysters (dotted lines). Internal temperatures closely track external temperatures. in mean levels of control hsp70 mRNA in summer relative to winter oysters, the differences were not significant (P = ; Fig. 7). Thermal limits and induction of thermal tolerance
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Totten • CH'Sler 1 • Ovster 2 • Ch'Ster 3 Bag Temp Figure 1. Internal temperatures of three living oysters (solid lines) at two tidal heights ( m and m at Totten Inlet, Washington) and external temperatures from a temperature probe placed alongside the oysters (dotted lines). Internal temperatures closely track external temperatures. in mean levels of control hsp70 mRNA in summer relative to winter oysters, the differences were not significant (P = ; Fig. 7). Thermal limits and induction of thermal tolerance Laboratory heat shock of oysters at both tidal heights suggested both seasonal and tidal height influences on the upper thermal limits for survival (Fig. 8). In January there was no significant difference in lethal temperatures between oysters at the two tidal heights. However, by August there were significant increases in the baseline thermal limits of oysters at both study sHes. Moreover, oysters at the high tidal height appeared to exhibit elevated thermal limits compared to their low tidal height counterparts during the summer. August survival of high tidal height oysters after 44°C heat shock was significantly higher than that of the low tidal height oysters (P = ). These differences occurred in the absence of HSP69 expression, suggesting that control thermal limits in Pacific oysters are likely to be more closely associated with cognate HSC70 expression than to inducible HSP70 expression. In contrast, induced thermal tolerance appeared to be associated with inducible HSP70 expression (Fig. 9). Oysters at the high tidal height that were heat-shocked at 37°C during the winter were able to completely withstand a subsequent lethal treatment of 44°C. Heat shock at 37°C did not induce thermotolerance. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illu
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
