Effects of phosphates on shellfish and on calcium carbonate crystallization in vitro. Final report
It has been known that inorganic phosphate inhibits the precipitation of calcium carbonate in artificial sea water. This work addresses the question of whether phosphate also affects the deposition of CaCO/sub 3/ in the exoskeletons of invertebrates. Tetrasodiumpyrophosphate and pentasodiumtripolyphosphate in concentrations of 15 ppM caused abnormality, mortality, and inhibition of shell deposition in trochophore larvae of the oyster Crassostrea. Inhibition of shell growth resulting from pollution at 15 ppM could be expected in Rangia with orthophosphate, tetrasodium pyrophosphate, and sodiumtripolyphosphate, in Helisoma with tetrasodium pyrophosphate, and pentasodium tripolyphosphate, and in larvae of Crassostea the relative inhibitory action of shell growth was tetrasodiumpyrophosphate > sodiumtripolyphosphate > sodium orthophosphate greater than or equal to sodium hexametaphosphate. 4 refs.
- Research Organization:
- Duke Univ., Durham, NC (USA). Dept. of Zoology
- DOE Contract Number:
- AS05-83ER60136
- OSTI ID:
- 5387793
- Report Number(s):
- DOE/ER/60136-T1; ON: DE86014992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560304* -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH ISOTOPES
ANIMALS
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BODY
CALCIUM 45
CALCIUM ISOTOPES
CLAMS
DAYS LIVING RADIOISOTOPES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INVERTEBRATES
ISOTOPE APPLICATIONS
ISOTOPES
LARVAE
MOLLUSCS
NUCLEI
ORGANS
OXYGEN COMPOUNDS
OYSTERS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RADIOISOTOPES
SKELETON
SNAILS
TRACER TECHNIQUES