Bioaccumulation factor for /sup 32/P measured in bluegill, Lepomis macrochirus, and catfish, Ictalurus punctatus

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Health Phys.; (United States)

DOI:https://doi.org/10.1097/00004032-198710000-00006· OSTI ID:5845468

Kahn, B; Turgeon, K S; Martini, D K; Dunkerly, S J; el-Shinawy, R M; Wilson, M D

The ratio of the bioaccumulation factors for /sup 32/P and phosphorus was determined for edible tissue in two species of freshwater fish by measuring the specific activity (/sup 32/P activity per milligram phosphorus) in muscle relative to feed. The /sup 32/P tracer was added to the feed at a uniform level throughout the study. Feeding was at two levels: ad libitum and at a lower but constant intake per body weight. In the main experiment, bluegill were maintained in a large flow-through tank and sacrificed at approximately weekly intervals for 51 d of /sup 32/P accumulation and 28 d of depuration to compare the specific activity with values predicted with a calculational model. In experiments performed in smaller aquaria, the specific activity in bluegill and catfish muscle was compared at two feeding levels and two temperatures. In addition, unfed fish were exposed to /sup 32/P in water at a known specific activity to determine the extent of phosphorus uptake directly from water. The pattern of specific activity increase and decrease in fish muscle during the accumulation/depuration experiment was consistent with a one-compartment model, so that specific activity ratios at steady state could be predicted from measurements during relatively brief exposures. On this basis, the ratio of the bioaccumulation factors of /sup 32/P and phosphorus in fish feeding ad libitum was 0.081 for bluegill and 0.17 for catfish. Hence, at a mean phosphorus bioaccumulation factor of 70,000, the factors for /sup 32/P are 6000 and 12,000, respectively. The ratios were less at lower phosphorus intakes associated with lower feeding rates; moreover, the lesser value for bluegill occurred at a much lower phosphorus intake than by catfish.

• Research Organization: Georgia Institute of Technology, Atlanta
• OSTI ID: 5845468
• Journal Information: Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 53:4; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

560162* -- Radionuclide Effects
Kinetics
& Toxicology-- Animals
Plants
Microorganisms
& Cells
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL ACCUMULATION
BIOLOGICAL VARIABILITY
DAYS LIVING RADIOISOTOPES
DIET
ELEMENTS
FISHES
GENETIC VARIABILITY
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MUSCLES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PHOSPHORUS
PHOSPHORUS 32
PHOSPHORUS ISOTOPES
RADIOISOTOPES
RADIONUCLIDE KINETICS
TRACER TECHNIQUES
VERTEBRATES