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RECOVERY OF AQUATIC ARTHROPOD POPULATIONS IN A WOODLAND STREAM AFTER DEPLETION BY FENITROTHION TREATMENT

Published online by Cambridge University Press:  31 May 2012

D. C. Eidt
D. C. Eidt
Affiliation:
Maritimes Forest Research Centre, Canadian Forestry Service, Fredericton, New Brunswick E3B 5P7
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Abstract

Fenitrothion injected into a stream at 73 μg/L diminished to 23 μg/L 343 m downstream and resulted in a decline of standing crop of benthic arthropods between 343 and 375 m downstream. Large and small insect larvae were not affected differentially. Most of the kill consisted of Leuctra spp. (Plecoptera: Leuctridae) larvae. Benthos recovery was complete 50 days after the treatment.

Résumé

Un traitement de fenitrothion dans un ruisseau à raison de 73 μ/L a diminué à μg/L à 343 m en aval, ce qui a résulté en un déclin des arthropodes benthiques sur une distance de 343 à 375 m en aval. Les larves d’insectes, de grande ou petite taille n’ont pas été affectées différemment. La plupart des larves tuées étaient de l’espèce Leuctra (Plecoptera : Leuctridae). La guérison du benthos était complète 50 jours après le traitement.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 4 , April 1981 , pp. 303 - 313
Copyright
Copyright © Entomological Society of Canada 1981

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References

Eidt, D. C. 1975. The effect of fenitrothion from large-scale forest spraying on benthos in New Brunswick headwaters streams. Can. Ent. 107: 743–760.CrossRefGoogle Scholar
Eidt, D. C. 1977. Effects of fenitrothion on benthos in the Nashwaak Project study streams in 1976. Marit. For. Res. Cen., Inf. Rep. M-X-70. 22 pp.Google Scholar
Eidt, D. C. 1978. Toxicity of fenitrothion to insects in a woodland stream. Marit. For. Res. Cen., Inf. Rep. M-X-86. 13 pp.Google Scholar
Morgan, H. G. 1976. Sublethal affects of diazinon on stream invertebrates. Ph.D. Thesis, University of Guelph, Guelph, Ontario. 157 pp.Google Scholar
Symons, P. E. K. 1977 a. Dispersal and toxicology of the insecticide fenitrothion; predicting hazards of forest spraying. Residue Reviews 38: 1–36.Google Scholar
Symons, P. E. K. 1977 b. Assessing and predicting effects of the fenitrothion spray program on aquatic fauna. pp. 391–414in Proceedings of the symposium on fenitrothion, the long-term effects of its use in forest ecosystems. National Research Council Canada NRCC 16073.Google Scholar