2023-03Zeitschriftenartikel DOI: 10.18452/26176
Brown shrimp in the spotlight - can Crangon crangon be conditioned to retrieve food through a visual stimulus?
The brown shrimp Crangon crangon is an opportunistic feeder that is widely distributed in the Atlantic Ocean. It has a large pray spectrum and uses ambush tactics while hunting. To explore the possibility of memory and learning in this species, we attempted to condition specimens to a light stimulus using food (Mytilus edulis) as a reward. After starving the specimens for 32 hours prior to the experiment, several conditioning rounds (20 s light stimulus followed by 60 s of feeding) were absolved on four consecutive days. After conducting short-term experiments with four replicates as well as a long-term experiment (same group for all four trial days) we could not document a successful conditioning with the chosen experiment set up as there were no significant trends in the development of the specimens‘ behavior. We accredit the lack of conditioning mainly to unfavorable management of holding conditions, feeding management and stimulus application but cannot exclude the possibility of memory or learning in the brown shrimp Crangon crangon.
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