AI Article Synopsis
- The study examined how different soil organic matter levels (8% vs. 55%) affect how much malathion, a pesticide, is absorbed by the common nightcrawler, Lumbricus terrestris.
- Earthworms were exposed to malathion for 72 hours, and researchers looked at malathion levels in their bodies and their tissue cholinesterase activities as indicators of bioavailability.
- Results showed no significant differences in how much malathion was absorbed or in cholinesterase activity between the two soil types, implying that soil organic matter doesn't limit malathion's availability to earthworms.
Article Abstract
This study investigated the effect of soil organic matter content on the bioavailability of malathion to the common nightcrawler, Lumbricus terrestris. Earthworms were exposed for 72 h to malathion on two soil types, 8% organic matter and 55% organic matter. Two different measures of bioavailability, malathion body burdens and tissue cholinesterase activities, were then measured in the malathion exposed animals. There were no significant differences in body burden or cholinesterase levels in L. terrestris exposed to malathion on soils with differing organic matter content. This suggests that absorption into organic matter is not a limiting factor of malathion bioavailability to earthworm species.
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| http://dx.doi.org/10.1007/s00128-007-9349-6 | DOI Listing |
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