Full TGIF Record # 169403
Item 1 of 1
DOI:10.1002/ps.2780190305
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1002/ps.2780190305/pdf
    Last checked: 09/21/2010
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    Access conditions: Item is within a limited-access website
Publication Type:
i
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
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
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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
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