Effects of high-pressure acclimatization on silver eel (Anguilla anguilla, L.) slow muscle contraction.

Orlane Rossignol Philippe Sebert 1 Bernard Simon
1 ORPHY (EA 4324) - Optimisation des régulations physiologiques
Abstract : As the spawning migration of the eel is supposed to correspond to a long swimming activity at depth, patterns of slow red muscle contraction have been investigated in European silver eel (Anguilla anguilla L.) exposed for 3 weeks to 10.1 MPa hydrostatic pressure. The results show that pressure-acclimated eels (male and female) show a three-fold decrease in maximum isometric stress of twitch and tetanic contractions while time to peak force, time from peak force to 90% relaxation and ratio of twitch tension to tetanic tension remain unchanged. The observed modifications in slow red muscle mechanical properties do not impede the spawning migration of the eel and are possibly partially compensated by an improvement in the efficiency of oxidative phosphorylation. Effects of changes in membrane fluidity are also discussed.
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Article dans une revue
Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2006, 143 (2), pp.234-8. 〈10.1016/j.cbpa.2005.11.025〉
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http://hal.univ-brest.fr/hal-00750454
Contributeur : François Guerrero <>
Soumis le : vendredi 9 novembre 2012 - 23:40:04
Dernière modification le : vendredi 13 octobre 2017 - 01:09:28

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Orlane Rossignol, Philippe Sebert, Bernard Simon. Effects of high-pressure acclimatization on silver eel (Anguilla anguilla, L.) slow muscle contraction.. Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2006, 143 (2), pp.234-8. 〈10.1016/j.cbpa.2005.11.025〉. 〈hal-00750454〉

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