NDLI: Mechanical reconfiguration mediates swallowing and rejection in Aplysia californica

Content Provider	Springer Nature Link
Author	vakovic, Valerie A. Sutton, Gregory P. Neustadter, David M. Beer, Randall D. Chiel, Hillel J.
Copyright Year	2006
Abstract	Muscular hydrostats, such as tongues, trunks or tentacles, have fewer constraints on their degrees of freedom than musculoskeletal systems, so changes in a structure’s shape may alter the positions and lengths of other components (i.e., induce mechanical reconfiguration). We studied mechanical reconfiguration during rejection and swallowing in the marine mollusk Aplysia californica. During rejection, inedible material is pushed out of an animal’s buccal cavity. The grasper (radula/odontophore) closes on inedible material, and then a posterior muscle, I2, pushes the grasper toward the jaws (protracts it). After the material is released, an anterior muscle complex (the I1/I3/jaw complex) pushes the grasper toward the esophagus (retracts it). During swallowing, the grasper is protracted open, and then retracts closed, pulling in food. Grasper closure changes its shape. Magnetic resonance images show that grasper closure lengthens I2. A kinetic model quantified the changes in the ability of I2 and I1/I3 to exert force as grasper shape changed. Grasper closure increases I2’s ability to protract during rejection, and increases I1/I3’s ability to retract during swallowing. Motor neurons controlling radular closure may therefore affect the behavioral outputs of I2’s and I1/I3’s motor neurons. Thus, motor neurons may modulate the outputs of other motor neurons through mechanical reconfiguration.
Starting Page	857
Ending Page	870
Page Count	14
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	192
Issue Number	8
e-ISSN	14321351
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-04-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Muscular hydrostat Biomechanics Feeding Soft tissue Mollusk Animal Physiology Zoology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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Mechanical reconfiguration mediates swallowing and rejection in aplysia californica (2006).

Passive hinge forces in the feeding apparatus of Aplysia aid retraction during biting but not during swallowing

Data from: Soft-surface grasping: radular opening in Aplysia californica (Dataset)

Effects of aging on the food intake in the feeding behavior of Aplysia kurodai

Sensitizing stimulation causes a long-term increase in heart rate in Aplysia californica

Acidity enhances the effectiveness of active chemical defensive secretions of sea hares, Aplysia californica, against spiny lobsters, Panulirus interruptus

Taste-mediated behavioral and electrophysiological responses by the predatory fish Ariopsis felis to deterrent pigments from Aplysia californica ink

Serotonergic cerebral cells control activity of cilia in the foregut of the pteropod mollusk Clione limacina

Cerebral-buccal pathways in Aplysia californica: synaptic connections, cooperative interneuronal effects and feedback during buccal motor programs

Mechanical reconfiguration mediates swallowing and rejection in Aplysia californica

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Mechanical reconfiguration mediates swallowing and rejection in aplysia californica (2006).

Passive hinge forces in the feeding apparatus of Aplysia aid retraction during biting but not during swallowing

Data from: Soft-surface grasping: radular opening in Aplysia californica (Dataset)

Effects of aging on the food intake in the feeding behavior of Aplysia kurodai

Sensitizing stimulation causes a long-term increase in heart rate in Aplysia californica

Acidity enhances the effectiveness of active chemical defensive secretions of sea hares, Aplysia californica, against spiny lobsters, Panulirus interruptus

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Mechanical reconfiguration mediates swallowing and rejection in Aplysia californica