Control of feeding movements in the pteropod mollusc, Clione limacina.

Control of feeding movements in the pteropod mollusc, Clione limacina. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Control of feeding movements in the pteropod mollusc, Clione limacina. Abstract Text:

Arshavsky YuI,T G Deliagina,G N Orlovsky, Panchin YuV,

(1) The buccal apparatus of the pteropod marine mollusc Clione limacina, isolated together with buccal ganglia, could perform rhythmic feeding movements. Movements of the radula and the hooks (which the Clione inserts into the body of its prey) as well as the electroneurogram of the radular nerve were recorded. Usually one could observe rhythmic radula movements alone, while the hooks were motionless. But sometimes the hooks also performed rhythmic movements which were more or less synchronous with those of the radula. The radula movement cycle consisted of the protraction and the retraction phases, which were occasionally followed by a quiescent phase. Corresponding to each radula movement was a burst of activity in the radular nerve, consisting of the protractor and the retractor components. (2) Isolated buccal ganglia were capable of feeding rhythm generation. Most of the buccal neurons exhibited rhythmic activity correlating with the activity in the radular nerve. According to the phase of activity in the feeding cycle, rhythmic neurons were divided into two groups - the protractor and the retractor ones. The neurons within each of the groups were electrically coupled with each other. The protractor and retractor neurons inhibited each other. (3) Protractor and retractor neurons were extracted from buccal ganglia by means of a microelectrode. Many isolated cells generated slow oscillations of membrane potential and bursts of spikes, the pattern of this activity being similar to that before isolation. (4) A model of the feeding rhythm generator is discussed. It consists of two (protractor and retractor) groups of neurons with mutual inhibitory connections, neurons of each group being endogenous bursters.

Control of feeding movements in the pteropod mollusc, Clione limacina. Publishing Authors By Initials

Arshavsky YuI,TG Deliagina,GN Orlovsky, Panchin YuV,

For similar musculoskeletal, neural, and ocular physiology: nervous system physiology research abstracts see: musculoskeletal, neural, and ocular physiology: nervous system physiology research

PUBMED ID PMID:

MEDLINE DATE:

Control of feeding movements in the pteropod mollusc, Clione limacina. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 78

Page Numbers: 387-97

Journal Abbreviation:

ISSN: 0014-4819

DAY: 15

MONTH: 02

YEAR: 1989

Control of feeding movements in the pteropod mollusc, Clione limacina. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 43312

Control of feeding movements in the pteropod mollusc, Clione limacina. Keywords Mesh Terms:

KEYWORDS: Nervous System Physiology

MESH TERMS: physiology

Chemical & Substance for Abstract: Control of feeding movements in the pteropod mollusc, Clione limacina. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Control of feeding movements in the pteropod mollusc, Clione limacina.

AFFILIATION: Institute of Problems of Information Transmission, Academy of Sciences of the USSR, Moscow.

Country: GERMANY, WEST

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Exp Brain Res

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Control of feeding movements in the pteropod mollusc, Clione limacina Related Publications

• Control of feeding movements in the freshwater snail Planorbis corneus. I. Rhythmical neurons of buccal ganglia.
• Control of feeding movements in the freshwater snail Planorbis corneus. II. Activity of isolated neurons of buccal ganglia.
• Control of feeding movements in the freshwater snail Planorbis corneus. III. Organization of the feeding rhythm generator.
• Control of feeding movements in the pteropod mollusc, Clione limacina.
• Control of locomotion in marine mollusc--Clione limacina. V. Photoinactivation of efferent neurons.