Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Z-transformed residuals of morphological character states (corrected for body size) as a function of the minimum p-distances to the closest surface (black circles) or subterranean (white circles) relative (mean ± s.d. for each sampling site; horizontal line: mean value of surface sites).
