Related Experiment Videos
Pesticide bioaccumulation in cattle
1Centre for Coastal Management, Southern Cross University, Lismore, New South Wales, Australia.
Ecotoxicology and Environmental Safety
|August 1, 1994
Summary
A partition model evaluated chlorinated hydrocarbon pesticide bioaccumulation in soil-pasture-grazing animal systems. Results suggest food partitioning is key, but other processes are also involved in pesticide buildup.
Area of Science:
- Environmental Chemistry
- Ecotoxicology
- Animal Science
Background:
- Chlorinated hydrocarbon pesticides pose risks to ecosystems and animal health.
- Understanding bioaccumulation in food chains is crucial for risk assessment.
- The soil-pasture-grazing animal system is a relevant model for pesticide transfer.
Purpose of the Study:
- To develop and evaluate a simple partition model for pesticide bioaccumulation.
- To assess the bioaccumulation of dieldrin and heptachlor in a soil-pasture-grazing animal system.
- To investigate the role of partitioning in pesticide bioaccumulation.
Main Methods:
- Development of a simple partition model.
- Calculation of biomagnification factors (BFL) on a lipid basis.
- Comparison of model predictions with experimental data (implied).
Main Results:
- Biomagnification factors (BFL) ranged from 0.115 to 0.175.
- The partition model predicted values less than unity.
- Results showed a lack of dependence on the octanol/water coefficient for the studied compounds.
Conclusions:
- Partitioning between ingested food and body tissues is a significant bioaccumulation process.
- The developed model does not fully account for all pesticide pathways and mechanisms.
- Additional processes beyond simple partitioning are involved in pesticide bioaccumulation in this system.