Cichlids: Cichlid Mating Preference
In abd: The Analysis of Biological Data

Description Usage Format Source References Examples

Preference index in F1 and F2 crosses of two species of cichlids from Lake Victoria, Pundamilia pundamilia and P. nyererei.

1	data(Cichlids)

A data frame with 53 observations on the following 2 variables.

genotype: a factor with levels F1 and F2
preference: a numeric vector

Haeslery, M.P. and O. Seehausen. 2005. Inheritance of female mating preference in a sympatric sibling species pair of Lake Victoria cichlids: implications for speciation. Proceedings of the Royal Society of London, Series B, Biological Sciences 272: 237-245.

http://rspb.royalsocietypublishing.org/content/272/1560/237.full.pdf

data(Cichlids)
str(Cichlids)

if (require(Hmisc)) {
  summary(preference ~ genotype, Cichlids, fun = favstats)
} else {
  aggregate(preference ~ genotype, Cichlids, FUN = favstats)
}

if (require(plyr)) {
ddply(Cichlids, .(genotype),
  function(df)c(mean = mean(df$preference),
                standard.deviation = sd(df$preference),
                n = length(df$preference)))
}