The relative toxicities of several pesticides to naiads of three species of stoneflies
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Abstract
Static bioassays were conducted to determine the relative acute toxicities of some insecticides, herbicides, fungicides, a defoliant, and a molluscicide to the naiads of three species of stonef!y, Pteronarcys califomica, Pteronarcella badia, and Claassenia sabulosa. Toxic effects were measured by determination of median lethal concn (Lcoo) for 24-, 48-, and 96-hr exposures, at 15.5C. Endrin and dieldrin were the most and DDT the least toxic of the chlorinated hydrocarbon insecticides tested. Parathion was the most toxic organophosphate insecticide to P. califomica naiads, but dursban was the most toxic to P. badia and C. sabulosa naiads. Trichlorofon ( Dipterex) was the least toxic to all three species. P. badia, the species of smallest size, was the species most susceptible to most pesticides, followed in descending order of sensitivity by C. sabulosa and P. califomica. Smaller specimens of P. californica naiads were consistently more susceptible to some insecticides than larger specimens of the same species.
Publication type | Article |
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Publication Subtype | Journal Article |
Title | The relative toxicities of several pesticides to naiads of three species of stoneflies |
Series title | Limnology and Oceanography |
DOI | 10.4319/lo.1968.13.1.0112 |
Volume | 13 |
Issue | 1 |
Year Published | 1968 |
Language | English |
Publisher | Wiley |
Contributing office(s) | Columbia Environmental Research Center |
Description | 6 p. |
First page | 112 |
Last page | 117 |
Online Only (Y/N) | N |
Additional Online Files (Y/N) | N |
Google Analytic Metrics | Metrics page |