Unusually high intake and fecal output of cadmium, and fecal output of other trace elements in New Zealand adults consuming dredge oysters. [Tiostrea lutaria]

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Environ. Res.; (United States)

OSTI ID:6727990

McKenzie-Parnell, J M; Kjellstrom, T E; Sharma, R P; Robinson, M F

The concentration of cadmium in New Zealand dredge oyster Tiostrea lutaria (commonly known as a Bluff oyster) is sufficiently high so that the ingestion of just one oyster can more than double a normal daily intake of cadmium for a New Zealand adult. A survey of 75 adults associated with the oyster fishing industry was carried out before and at the end of the oyster season. Preseason intakes (from dietary history questionnaires and from 3-day fecal collections) of cadmium, selenium, zinc, copper, and manganese were normal for a New Zealand adult not consuming Bluff oysters. The subjects were classified according to their reported average oyster consumption during the 6 months of the oyster fishing season; the subjects who consumed more oysters were more likely to smoke cigarettes. The end-season fecal output of cadmium confirmed the reported average oyster intakes: Category I (0-5 oysters/week): 15 +/- 8 (mean +/- SD) ..mu..g Cd/day; Category II (6-23 oysters/week): 84 +/- 134 ..mu..g Cd/day; Category III (24-71 oysters/week): 129 +/- 144 ..mu..g Cd/day; Category IV (72 + oysters/week): 233 +/- 185 ..mu..g Cd/day. The fecal output of selenium as well was increased by the consumption of many oysters but the fecal outputs of zinc, copper, manganese were not. Using fecal cadmium excretion to predict dietary cadmium intake, 8-15% of the subjects in this study were identified as having an intake of cadmium which has been associated with an increased prevalence of tubular proteinuria.

• Research Organization: Univ. of Otago, Dunedin (New Zealand)
• OSTI ID: 6727990
• Journal Information: Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 46:1; ISSN ENVRA
• Country of Publication: United States
• Language: English

Related Subjects

520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
AUSTRALASIA
BIOLOGICAL AVAILABILITY
CADMIUM
CLEARANCE
CONTAMINATION
COPPER
DIET
ELEMENTS
ENVIRONMENTAL EXPOSURE
EXCRETION
FOOD CHAINS
HUMAN POPULATIONS
INGESTION
INTAKE
INVERTEBRATES
MANGANESE
METALS
MOLLUSCS
NEW ZEALAND
OYSTERS
POLLUTION
POPULATIONS
SELENIUM
SEMIMETALS
TRANSITION ELEMENTS
WATER POLLUTION
ZINC