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- W2076434929 abstract "Laboratory experiments, in which adult sea scallops (Placopecten magellanicus Gmelin) were fed rations of varying concentration and organic and elemental composition for periods of 15 and 56 days, were conducted to provide predictive relationships between the quantity and quality of the food supply and the efficiency and rate of absorption of dietary constituents. The absorption efficiency of particulate organic matter (AEPOM), organic carbon (AEPOC) and nitrogen (AEPN) decreased exponentially with a progressive increase in dietary inorganic content. Regression models indicated that between 74 and 84% of the variation in average AE values was attributed to differences in dietary quality, which was expressed as the POM, POC or PN content per unit dry weight of particulate matter. Changes in absorption efficiency were rapid after a change in seston quality and acclimation was complete within 6 days. During this time, the AEPOM of the lowest quality seston ration (39% organic content) was increased by a factor of 1.8 and AEPOC and AEPN progressively increased from negative values to about 60%. Scallops fed a seston diet that alternated between low and high quality (39 and 84% POM, respectively) at 12-h intervals acclimated to the lower quality diet. These results show that sea scallops respond to low-frequency reductions in food quality by rapidly maximizing the absorption of available resources. By maintaining this adapted state for some period greater than 12 h, the scallops are able to maintain a relatively high AE despite high-frequency, tidally forced variations in the food supply." @default.
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- W2076434929 date "1995-06-01" @default.
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- W2076434929 title "Relationships between food quantity and quality and absorption efficiency in sea scallops Placopecten magellanicus (Gmelin)" @default.
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- W2076434929 doi "https://doi.org/10.1016/0022-0981(95)00019-n" @default.
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