Excretion of cadmium and zinc during moulting in the grasshopper Omocestus viridulus (Orthoptera)
- Uppsala Univ. (Sweden)
Nymphs of Omocestus viridulus (Orthoptera) were reared on grass leaves containing known amounts of [sup 109]Cd or [sup 65]Zn. After the animals molted to adults, contents of these metals were measured in the grasshoppers, in the cast of exuviae and in the feces produced during rearing. Dry weights of adult bodies and exuviae were lower for [sup 109]Cd-treated grasshoppers than for those given [sup 65]Zn. Exuviae accounted for only a minor part of the excreted [sup 109]Cd and [sup 65]Zn. The [sup 109]Cd was assimilated from food to a much smaller extent than was [sup 65]Zn. After 15 d of rearing, [approximately] 50% of the ingested [sup 65]Zn, but only 10% of the ingested [sup 109]Cd, remained in the grasshoppers. Because the amount of [sup 109]Cd in the grasshopper nymphs decreased with time, whereas that of the exuviae were constant, content in exuviae constituted a larger portion of the total content of [sup 109]Cd with increasing time between feeding of [sup 109]Cd and molting. For [sup 65]Zn there was no such trend.
- OSTI ID:
- 7099414
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Vol. 13:10; ISSN 0730-7268
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CADMIUM
EXCRETION
GRASSHOPPERS
SENSITIVITY
ZINC
CADMIUM 109
LIFE CYCLE
METABOLISM
TRACER TECHNIQUES
ZINC 65
ANIMALS
ARTHROPODS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CADMIUM ISOTOPES
CLEARANCE
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
INSECTS
INTERMEDIATE MASS NUCLEI
INVERTEBRATES
ISOTOPE APPLICATIONS
ISOTOPES
METALS
NUCLEI
ORTHOPTERA
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
ZINC ISOTOPES
560300* - Chemicals Metabolism & Toxicology