NDLI: Satiation level affects anti-predatory decisions in foraging juvenile crayfish

Content Provider	Springer Nature Link
Author	Schadegg, Abigail C. Herberholz, Jens
Copyright Year	2017
Abstract	Moving shadows signify imminent threat to foraging juvenile crayfish, and the animals respond with one of two discrete anti-predatory behaviors: They either freeze in place or rapidly flex their tails, which quickly propels them away from the approaching danger signal. Although a freeze might be the more risky choice, it keeps the animal near the expected food reward, while a tail-flip is effective in avoiding the shadow, but puts critical distance between the animal and its next meal. We manipulated the satiation level of juvenile crayfish to determine whether their behavioral choices are affected by internal energy states. When facing the same visual danger signal, animals fed to satiation produced more tail-flips and fewer freezes than unfed animals, indicating that intrinsic physiological conditions shape value-based behavioral decisions. Escape tail-flip latencies, however, were unaffected by satiation level, and an increase in food quality only produced a minor behavioral shift toward more freezing in both fed and unfed animals. Thus, satiation level appears to be the dominant factor in regulating decision making and behavioral choices of crayfish.
Starting Page	223
Ending Page	232
Page Count	10
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	203
Issue Number	3
e-ISSN	14321351
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-02-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Decision making Cost-benefit analysis Hunger Predator Crayfish Animal Physiology Neurosciences Zoology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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