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While cannibalistic behavior is natural in many species, cannibalism among reared animals can present significant problems in the ever-expanding aquaculture industry. This is especially true with aggressive decapod crustaceans like crayfish. Prior research has identified several factors that can reduce cannibalistic and aggressive behavior, including food quantity, stocking density, and shelter availability. One variable that has been known to impact both aggression and activity levels in crayfish is light regime. In this study, I manipulated light regime to look for an effect on aggressive behavior in juveniles of two crayfish species, the virile crayfish (Faxonius virilis) and the white river crayfish (Procambarus acutus). Although increasing the hours of light per day significantly reduced activity levels in both crayfish species, there was no significant effect on overall aggression, suggesting that the extent of aggressive behavior in crayfish is not directly related to activity.
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Spitzer, Blue, "Aggression and activity of juvenile crayfish (Faxonius virilis and Procambarus acutus) under different light regimes" (2023). Senior Projects Spring 2023. 30.
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