Temperature sensitivity of the pyloric neuromuscular system and its modulation by dopamine

  • We report here the effects of temperature on the p1 neuromuscular system of the stomatogastric system of the lobster (Panulirus interruptus). Muscle force generation, in response to both the spontaneously rhythmic in vitro pyloric network neural activity and direct, controlled motor nerve stimulation, dramatically decreased as temperature increased, sufficiently that stomach movements would very unlikely be maintained at warm temperatures. However, animals fed in warm tanks showed statistically identical food digestion to those in cold tanks. Applying dopamine, a circulating hormone in crustacea, increased muscle force production at all temperatures and abolished neuromuscular system temperature dependence. Modulation may thus exist not only to increase the diversity of produced behaviors, but also to maintain individual behaviors when environmental conditions (such as temperature) vary.

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Author:Jeffrey B. Thuma, Kevin H. Hobbs, Helaine J. Burstein, Natasha S. Seiter, Scott L. Hooper
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/23840789
Parent Title (English):PLoS One
Publisher:Public Library of Science
Place of publication:Lawrence, Kan.
Editor:Wolfgang Blenau
Document Type:Article
Date of Publication (online):2013/06/28
Date of first Publication:2013/06/28
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2013/09/02
Page Number:8
© 2013 Thuma et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Institutes:Biowissenschaften / Biowissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Sammlung Biologie / Sondersammelgebiets-Volltexte
Licence (German):License LogoCreative Commons - Namensnennung 3.0