Skip to main content
Orconectes virilis Body Size and Shelter Preference
Hawkinson, Anna (2012)

Orconectes virilis Body Size and Shelter Preference


Issue Date

Scholarly Text or Essay

Environment preference in terms of light and dark was tested on Crayfish (Orconectes virilis) from Itasca Lake in north central Minnesota. Twelve crayfish were caught from the lake and noted to be either “large” or “small”. Crayfish were individually put into one of two identical enclosures for 5 min. Every 30 sec the location of the crayfish was noted. The enclosures were divided up into four quadrants varying in covered or open and black or white sides/bottoms. Data was analyzed with graphs and chi square tests. Overall, crayfish spent a significant amount of time in the darkest covered quadrant. A significant difference was also found between the frequency of time spent in each quadrant between small and large crayfish; small crayfish remained in the darkest covered quadrant more than large crayfish.

Appears in Collection(s)

Series/Report Number
Itasca Biological Station Student Papers

Student paper, BIOL 3811, 2011

Suggested Citation
Hawkinson, Anna. (2012). Orconectes virilis Body Size and Shelter Preference. Retrieved from the University of Minnesota Digital Conservancy,

Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.