Data used for analysis of head length

Data are from Gymnodactylus amarali individuals collected from field sites near the Serra da Mesa Reservoir in central Brazil.

The following column headings are used.

area: Each field site was either an island created by the filling of the reservoir or part of the adjacent mainland

site: a unique identifier for each field site

lizard: a unique identifier for each lizard captured as part of the study

sex: male, female, or unknown

snout.vent.length_mm: the snout-vent length of the individual lizard

head.length_mm: the length of the head of the individual lizard