OECD Guidelines for the Testing of Chemicals, Section 2

Effects on Biotic Systems

2074-5761 (online)
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The OECD Guidelines for the Testing of Chemicals is a collection of about 150 of the most relevant internationally agreed testing methods used by government, industry and independent laboratories to identify and characterise potential hazards of chemicals. They are a set of tools for professionals, used primarily in regulatory safety testing and subsequent chemical and chemical product notification, chemical registration and in chemical evaluation. They can also be used for the selection and ranking of candidate chemicals during the development of new chemicals and products and in toxicology research. This group of tests covers effects on biotic systems.

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Test No. 213: Honeybees, Acute Oral Toxicity Test

Test No. 213: Honeybees, Acute Oral Toxicity Test You or your institution have access to this content

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21 Sep 1998
9789264070165 (PDF)

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This Test Guideline is a laboratory test method, designed to assess the oral acute toxicity of pesticides and other chemicals, to adult worker honeybees.

Adult worker honeybees are exposed to five doses in a geometric series of the test substance dispersed in sucrose solution. A minimum of three replicate test groups, each of ten bees, should be dosed with each test concentration. A toxic standard (usually dimethoate) should be included in the test series. The bees are then fed the same diet, free of the test substance. The limit test corresponds to one dose level of 100 ìg active ingredient/bee. Mortality is recorded daily during at least 48 hours and compared with control values. If the mortality rate is increasing between 24 and 48h whilst control mortality remains at an accepted level it is appropriate to extend the duration of the test to a maximum of 96h. The study report should include the amount of diet consumed per group and the observation of all abnormal behavioural. The results are analysed in order to calculate the LD50 at 24h and 48h and, in case the study is prolonged, at 72h and 96h.

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