nitrofen: Toxicity of nitrofen in aquatic systems

In JrEduardo/cmpreg: Reparametrized COM-Poisson Regression Models

Description

Nitrofen is no longer in commercial use in the United States, having been the first pesticide to be withdrawn due to tetragenic effects (Bailer, 1994). This data set comes from an experiment to measure the reproductive toxicity of the herbicide, nitrofen, on a species of zooplankton (Ceriodaphnia dubia). Fifty animals were randomized into batches of ten and each batch was put in a solution with a measured concentration of nitrofen (0, .8, 1.6, 2.35 and 3.10 μg/100litre. Subsequently, the number of live offspring was recorded.

Usage

data(nitrofen, package = "cmpreg")

Format

A tibble with 50 observations and 2 colums:

• dose: Numeric value of the nitrofen concentration level (in μg/ 100 litre);

• noffs: Number of live offspring.

References

Bailer, A. and J. Oris (1994). Assessing toxicity of pollutant in aquatic systems. In Case Studies in Biometry, 25-40.

JrEduardo/cmpreg documentation built on May 8, 2019, 4:41 p.m.