Abstract
Ammonia excretion of individual Crangon franciscorum Stimpson was monitored in response to ingestion of single meals. The three experimental diets were tubificids, mysids and fish. Ammonia excretion was also monitored for individual shrimp which had been starved. The rate of ammonia excretion was higher for fed than for starved individuals in all cases. Ammonia excretion rates were higher for shrimp which were fed tubificids than those fed the other diets. The rate of excretion was influenced by both weight of the individual and the amount ingested of each diet. Ammonia excretion was influenced by dietary factors other than nitrogen content of the diet or the quantity ingested. The data suggest that field estimates of ammonia excretion based on the excretion rates of starved animals may be underestimates. The recent feeding history of an organism influences the rate of ammonia excretion as well as the relationship between the rate of excretion and weight.
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Communicated by M. Anraku, Nagasaki
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Nelson, S.G., Simmons, M.A. & Knight, A.W. Ammonia excretion by the benthic estuarine shrimp Crangon franciscorum (Crustacea: Crangonidae) in relation to diet. Mar. Biol. 54, 25–31 (1979). https://doi.org/10.1007/BF00387048
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DOI: https://doi.org/10.1007/BF00387048