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

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

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

Example output

Loading required package: nlme
Loading required package: lattice
Loading required package: grid
Loading required package: mosaic
Registered S3 method overwritten by 'mosaic':
  method                           from   
  fortify.SpatialPolygonsDataFrame ggplot2

The 'mosaic' package masks several functions from core packages in order to add 
additional features.  The original behavior of these functions should not be affected by this.

Attaching package: ‘mosaic’

The following objects are masked from ‘package:dplyr’:

    count, do, tally

The following object is masked from ‘package:Matrix’:

    mean

The following object is masked from ‘package:ggplot2’:

    stat

The following objects are masked from ‘package:stats’:

    binom.test, cor, cor.test, cov, fivenum, IQR, median, prop.test,
    quantile, sd, t.test, var

The following objects are masked from ‘package:base’:

    max, mean, min, prod, range, sample, sum

   before after log.before log.after diff.in.logs diff
1     105    85       4.65      4.44         0.21   20
2      50    74       3.91      4.30        -0.39  -24
3     136   145       4.91      4.98        -0.07   -9
4      90    86       4.50      4.45         0.05    4
5     122   148       4.80      5.00        -0.20  -26
6     132   148       4.88      5.00        -0.12  -16
7     131   150       4.88      5.01        -0.13  -19
8     119   142       4.78      4.96        -0.18  -23
9     145   151       4.98      5.02        -0.04   -6
10    130   113       4.87      4.73         0.14   17
11    116   118       4.75      4.77        -0.02   -2
12    110    99       4.70      4.60         0.10   11
13    138   150       4.93      5.01        -0.08  -12

abd documentation built on May 2, 2019, 2:14 p.m.