Blackbirds: Testosterone Levels in Blackbirds

In abd: The Analysis of Biological Data

Description

Experimental manipulation of testosterone levels in male Red-winged Blackbirds (Agelaius phoeniceus) and resulting changes in antibody levels

Usage

data(Blackbirds)

Format

A data frame with 13 observations on the following 6 variables.

before

a numeric vector

after

a numeric vector

log.before

a numeric vector

log.after

a numeric vector

diff.in.logs

a numeric vector

diff

a numeric vector

Source

Hasselquist, D., J.A. Marsh, P.W. Sherman, and J.C. Wingfield. 1999. Is avian immunocompetence suppressed by testosterone? Behavioral Ecology and Sociobiology 45: 167-175.

Examples

data(Blackbirds)
Blackbirds
xyplot(log.after ~ log.before, data = Blackbirds,
  ylab = "log Antibody production after implant",
  xlab = "log Antibody production before implant"
)

abd documentation built on May 2, 2019, 4:46 p.m.