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DOI: | 10.1002/ps.2780190305 |
Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1002/ps.2780190305/pdf Last checked: 09/21/2010 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Drewes, Charles D.;
Zoran, Mark J. |
Author Affiliation: | Department of Zoology, Iowa State University, Ames, Iowa |
Title: | Sublethel neurotoxic effects of the fungicide benomyl on earthworms (Eisenia fetida) |
Source: | Pest Management Science. Vol. 19, No. 3, 1987, p. 197-208. |
Publishing Information: | Barking, Essex: Elsevier Science Publishers LTD |
# of Pages: | 12 |
Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1002/ps.2780190305/abstract Last checked: 09/21/2010 Notes: Abstract only |
Keywords: | TIC Keywords: Benomyl; Earthworms; Insect surveys; Mode of action; Morphological evaluation; Neurotoxicity; Sublethal factors; Toxicological assessment
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Abstract/Contents: | "Earthworms Eisenia fetida were treated by surface contact exposure for 4 days with the fungicide benomyl. Non-invasive electrophysiological recordings after treatment with sublethal concentrations of 0.2-25 mg benomyl litre-1 of water (=0.003-0.435 ug benomyl cm-2 of filter paper) indicated concentration-dependent decreases in conduction velocity for the medial and lateral giant nerve fibres. Threshold concentration for these effects was approximately two orders of magnitude less than the LC50. The effects on velocity were not accompanied by alterations in refractory period or impairment of locomotory reflexes, but persisted for at least several weeks after treatment. Morphometric analysis of treated animals revealed a disruption of the myelin-like sheath surrounding giant fibres but no change in fibre diameters. It is concluded that benomyl had subtle and sublethal neurotoxic effects on earthworm giant nerve fibres. The data indicate that giant fibre conduction velocity is a particularly sensitive parameter for detecting these effects in intact worms." |
Language: | English |
References: | 32 |
Note: | Pictures, b/w Figures Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Drewes, C. D., and M. J. Zoran. 1987. Sublethel neurotoxic effects of the fungicide benomyl on earthworms (Eisenia fetida). Pest Management Science. 19(3):p. 197-208. |
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| DOI: 10.1002/ps.2780190305 |
| Web URL(s): http://onlinelibrary.wiley.com/doi/10.1002/ps.2780190305/pdf Last checked: 09/21/2010 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2219665 |
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