David, Perhaps you could avoid trying to actually measure some component of color, and just create and validate a reference series of photographs that illustrate distinguishable stages in the color change. Once you've done that part, you can just compare any sample to the reference series, assign it the associated score, and use those scores in your statistics.
Rohwer, S., and F. C. Rohwer. 1978. Status signaling in Harris' sparrows: experimental deceptions achieved. Anim. Behav. 26:1012-1022. Rohwer, S., and C. Wood. 1998. Three hybrid zones between Hermit and Townsend's warblers in Washington and Oregon. Auk 115:284-310. Luke *************************** Luke K. Butler Assistant Professor Department of Biology The College of New Jersey 2000 Pennington Road Ewing, NJ 08628 609.771.2531 *************************** ----- Original Message ----- From: "David Shiffman" <[email protected]> To: [email protected] Sent: Friday, April 16, 2010 12:21:14 PM GMT -05:00 US/Canada Eastern Subject: [ECOLOG-L] Quantifying color change Hello, friends! I am working on a project involving color change in fishes. I have a series of high-definition photographs taken over the course of a few weeks (same camera settings, same lighting conditions, taken in the same location). The color change is visually apparent. I have been having some difficulty finding literature that deals with quantifying color change and the associated statistics. If anyone has any suggestions on how to do this, I would be in your debt. Thanks! Sincerely, David Shiffman Masters Candidate, College of Charleston
