| Species-specific behavioral patterns correlate with differences in synaptic connections between homologous mechanosensory neurons. | |
| | |
MedLine Citation:
|
PMID: 20135128 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We characterized the behavioral responses of two leech species, Hirudo verbana and Erpobdella obscura, to mechanical skin stimulation and examined the interactions between the pressure mechanosensory neurons (P cells) that innervate the skin. To quantify behavioral responses, we stimulated both intact leeches and isolated body wall preparations from the two species. In response to mechanical stimulation, Hirudo showed local bending behavior, in which the body wall shortened only on the side of the stimulation. Erpobdella, in contrast, contracted both sides of the body in response to touch. To investigate the neuronal basis for this behavioral difference, we studied the interactions between P cells. Each midbody ganglion has four P cells; each cell innervates a different quadrant of the body wall. Consistent with local bending, activating any one P cell in Hirudo elicited polysynaptic inhibitory potentials in the other P cells. In contrast, the P cells in Erpobdella had excitatory polysynaptic connections, consistent with the segment-wide contraction observed in this species. In addition, activating individual P cells caused asymmetrical body wall contractions in Hirudo and symmetrical body wall contractions in Erpobdella. These results suggest that the different behavioral responses in Erpobdella and Hirudo are partly mediated by interactions among mechanosensory cells. |
| | |
Authors:
|
Michael J Baltzley; Quentin Gaudry; William B Kristan |
Related Documents
:
|
15455258 - Effects of boron deficiency in cell suspension cultures of populus alba l. 50398 - Morphogenesis in micrasterias. i. tip growth. 110478 - Chemical and ultrastructural examination of lead-induced morphological convertants of b... 10677428 - Differentiation of mucilage secretory cells of the arabidopsis seed coat. 3838628 - Flow-injection analysis of catecholamine secretion from bovine adrenal medulla cells on... 21054948 - Characterization and functionality of proliferative human sertoli cells. |
Publication Detail:
|
Type: In Vitro; Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-02-05 |
Journal Detail:
|
Title: Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology Volume: 196 ISSN: 1432-1351 ISO Abbreviation: J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol. Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-02-22 Completed Date: 2010-05-12 Revised Date: 2013-05-31 |
Medline Journal Info:
|
Nlm Unique ID: 101141792 Medline TA: J Comp Physiol A Neuroethol Sens Neural Behav Physiol Country: Germany |
Other Details:
|
Languages: eng Pagination: 181-97 Citation Subset: IM |
Affiliation:
|
Division of Biological Sciences, University of California, San Diego, 3119 Pacific Hall, 9500 Gilman Drive, #0357, La Jolla, CA 92093-0357, USA. mjbaltzley@smcm.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Action Potentials
/
physiology Analysis of Variance Animals Behavior, Animal / physiology* Excitatory Postsynaptic Potentials Leeches / physiology Mechanoreceptors / classification, physiology* Mechanotransduction, Cellular Movement / physiology Neural Inhibition / physiology Patch-Clamp Techniques / methods Physical Stimulation / methods Skin / innervation Species Specificity Synapses / physiology* |
| Grant Support | |
ID/Acronym/Agency:
|
MH43396/MH/NIMH NIH HHS; NS07229/NS/NINDS NIH HHS; NS35336/NS/NINDS NIH HHS; R01 MH043396-21/MH/NIMH NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: ZAP70: a master regulator of adaptive immunity.
Next Document: Effects of training on lipid metabolism in swimming muscles of sea trout (Salmo trutta).