Description

Researchers studied the development of a fly (Drosophila subobscura) that had been accidentally introduced from the Old World into North America around 1980.

Usage

Format

A data frame with 21 observations on the following 8 variables.

Continent

a factor with levels "NA" and "EU"

Latitude

latitude (degrees)

Females

average wing size (10^3 x log mm) of female flies on log scale

SE.F

standard error of wing size (10^3 x log mm) of female flies on log scale

Males

average wing size (10^3 x log mm) of male flies on log scale

SE.M

standard error of wing size (10^3 x log mm) of male flies on log scale

Ratio

average basal length to wing size ratios of female flies

SE.R

standard error of average basal length to wing size ratio of female flies

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Huey, R.B., Gilchrist, G.W., Carlson, M.L., Berrigan, D. and Serra, L. (2000). Rapid Evolution of a Geographic Cline in Size in an Introduced Fly, Science 287(5451): 308–309.

Examples