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Biol Bull 126: 302-306. (April 1964)
© 1964 Marine Biological Laboratory
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THE ACCUMULATION OF NITROGENOUS COMPOUNDS IN TERRESTRIAL AND AQUATIC EGGS OF PROSOBRANCH SNAILS

WILLIAM C. SLOAN 1

1 Department of Biology, San Diego State College, San Diego 15, California

1. Observations on the relative amounts of nitrogenous compounds accumulating in developing eggs lead to the conclusions that embryos of Marisa cornuarietis are ammonotelic, those of Pomacea paludosa uricotelic.

2. These results, obtained on related snails differing conspicuously only in embryonic habitat, emphasize the highly adaptive nature of nitrogen-excretion patterns.






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Copyright © 1964 by the Marine Biological Laboratory.