Biostatistics (version 1.0.4)

weaver: Oxidative stress and group size in social weaver birds

Description

Data from an experiment looking at the oxidative stress brought on by reproduction in white-browed sparrow weavers Plocepasser mahali. The birds live in groups but only one pair reproduces. Either eggs were left alone or some eggs were removed to reduce the stress caused by reproduction. Two measures of oxidative stress were made.

Usage

data("weaver")

Format

A data frame with 34 observations on the following 6 variables.

Bird_ID

Individual bird identifier

Treatment

either control (eggs left) or some eggs removed to reduce the cost of reproduction

GrpSize

Size of the social group

SOD_final

Superoxide dismutase activity

MDA_final

Malondialdehyde concentration

mass_final

mass of the bird in g

References

Cram, D.L., Blount, J.D. & Young, A.J. (2015) The oxidative costs of reproduction are group-size dependent in a wild cooperative breeder. Proceedings. Biological sciences / The Royal Society, 282, 20152031.

Examples

# NOT RUN {
data(weaver)
str(weaver)
# }