Document Detail
Crayfish feeding responses to zebra mussels depend on microorganisms and learning
Abstract/OtherAbstract :
Three species of crayfish ( Orconectes virilis, O. rusticus , and Cambarus robustus ) were tested for feeding responses to potential food odors from mollusks (either zebra mussels, Dreissena polymorpha , or native gastropods). In all three crayfish species, feeding responses to odor cues were shown only by individuals experienced with feeding on a prey type. Individuals exposed to just the smell of prey organisms did not show feeding responses, indicating the role of associative learning in diet breadth. Establishment of a learned association took more than one feeding experience but once established lasted more than three weeks. When microbial enzymatic degradation of food protein was eliminated, either by UV radiation or microfiltration, feeding responses were eliminated even for crayfish experienced with a prey type., Peer Reviewed,
Authors :
Hazlett, Brian A.
Contributors :
Department of Biology, University of Michigan, 48109-1048, Ann Arbor, Michigan, Ann Arbor
Publication Detail :
Publisher :  Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media     Type :  -     Format :  506461 bytes, 3115 bytes, application/pdf, text/plain    
Date Detail :
2006-09-11, 2006-09-11, 1994/10
Subject :
Feeding, Orconectes virilis, microorganisms, Physical Chemistry, Life Sciences, Agriculture, Ecology, Biological Microscopy, learning, crayfish, Dreissena polymorpha, Natural Resources and Environment, Ecology and Evolutionary Biology, Science
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Other Details :
Languages :  en_US    
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