Effect of forced fasting on magnesium and manganese regulation in a terrestrial isopod, Porcellio spinicornis Say
- Laurentian Univ., Sudbury, Ontario (Canada)
The amount of toxic and non-toxic elements assimilated by primary consumers from their environment depends as much on the form, as on concentration of these elements in the food. In superficially contaminated sites, the majority of elements detected in plant material are present as a blanket deposit of fine particles on leaf surfaces, and these are easily removed as the consumed material passes through the alimentary canal. In contrast, trace metals stored in the plant tissue are not readily available as they have been taken up via roots and are firmly bound within the plant tissue. Earlier studies have shown that mean concentrations of magnesium (Mg) and manganese (Mn) in whole woodlice are correlated with levels in their diet. Both metals are regulated by terrestrial isopods during their intermoult- and moult-cycles. The present study provides information on the regulation of Mg and Mn tissue concentrations during forced fasting in adult, intermoult male and female Porcellio spinicornis Say (Porcellionidae, Isopoda). Mg, the principal cation in the soft tissues is a well known activator of many enzymes of the glycolytic systems. Mn, on the other hand, plays a special role in digestive and catabolic processes.
- OSTI ID:
- 7104534
- Journal Information:
- Bulletin of Environmental Contamination and Toxicology; (USA), Vol. 43:1; ISSN 0007-4861
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pyrene metabolites in the hepatopancreas and gut of the isopod Porcellio scaber, a new biomarker for polycyclic aromatic hydrocarbon exposure in terrestrial ecosystems
Long-term toxicity of five polycyclic aromatic hydrocarbons for the terrestrial isopods Oniscus asellus and Porcellio scaber
Related Subjects
CRUSTACEANS
DIET
MAGNESIUM COMPOUNDS
METABOLISM
MANGANESE COMPOUNDS
CATIONS
ENZYME ACTIVITY
FASTING
FOOD CHAINS
ALKALINE EARTH METAL COMPOUNDS
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
CHARGED PARTICLES
INVERTEBRATES
IONS
TRANSITION ELEMENT COMPOUNDS
560300* - Chemicals Metabolism & Toxicology