Professor Sean Hartzell publishes paper on crayfish coloration


Professor Sean Hartzell
Professor Sean Hartzell has published a communication in the journal Freshwater Crayfish entitled "Ontogenetic Color Change in the Crayfish Cambarus b. bartonii and Faxonius obscurus: a Test of Ortmann’s Hypotheses." Professor Hartzell used digital image analysis to quantify  color variation in populations of two local crayfish species.  His analysis revealed  that there was not a relationship between coloration and body size in either crayfish species. This study did not support Ortmann's Hypotheses,  the presence of ontogenetic color change in these species and suggests that this intraspecific color variation in both species may be due to other factors. Check out Dr. Hartzell's paper at: Freshwater Crayfish 23(1):59–63, 2017 ISSN: 2076-4324 (Print), 2076-4332 (Online) https://doi.org/10.5869/fc.2017.v23-1.59


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