Issue |
Annls Limnol.
Volume 9, Number 1, 1973
|
|
---|---|---|
Page(s) | 63 - 77 | |
DOI | https://doi.org/10.1051/limn/1973007 | |
Published online | 16 June 2011 |
Influence de la température et du pH du milieu ambiant sur l'électrocardiogramme et les mouvements operculaires chez la carpe et la tanche
The influence of the temperature and pH of the surrounding environment on the electrocardiogram and opercular movements of the carp and tench
1
Université Paul-Sabatier, Laboratoire d'Écophysiologie Animale, 38, rue des Trente-Six-Ponts, 31 - Toulouse
Les variations de température influencent les réactions physiologiques de la Carpe et de la Tanche plus fortement que celles dues au pH ou à l'action combinée de ces deux facteurs. La température de 25 °C est un maximum critique au-delà duquel l'action du parasympathique se trouve modifiée. Le milieu acide inhibe l'activité cardiaque et accélère la fréquence respiratoire chez la Carpe; cette action peut être attribuée au déficit en oxygène provoqué par une baisse du pH sanguin.
Abstract
The physiological reactions of carp and tench are affected more strongly by temperature variations than by pH or the combined action of these two factors. A temperature of 25 °C is the critical maximum above which the action of the parasympathetic nervous System is found to be modified. The acid environment inhibits cardiac activity and accelerates respiratory frequency in the carp; this action is perhaps due to an oxygen deficit caused by a fall in the level of the blood pH.
© Masson, 1973
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