aster (version 0.7-4)

aphid: Life History Data on Uroleucon rudbeckiae

Description

Data on life history traits for the brown ambrosia aphid Uroleucon rudbeckiae

Usage

aphid

Details

The levels of varb indicate nodes of the graphical model to which the corresponding elements of the response vector resp belong. This is the typical long format produced by the R reshape function. For each individual, there are several response variables. All response variables are combined in one vector resp. The variable varb indicates which original variable the number was for. The variable id indicates which individual the number was for. The levels of varb, which are the names of the original variables are the following. S1 through S13 are Bernoulli: one if alive, zero if dead. B2 through B9 are conditionally Poisson: the number of offspring in the corresponding time period. Some variables in the original data that were zero have been deleted.

References

These data were published in the following, where they were analyzed by non-aster methods.

Lenski, R.~E. and Service, P.~M. (1982). The statistical analysis of population growth rates calculated from schedules of survivorship and fecunidity. Ecology, 63, 655-662.

Examples

data(aphid)
### wide version
aphidw <- reshape(aphid, direction = "wide", timevar = "varb",
    v.names = "resp", varying = list(levels(aphid$varb)))