Zur Abhängigkeit des Herzschlags vom O2-Gehalt des Wassers bei Carcinus maenas |
| |
Authors: | R Flindt |
| |
Institution: | 1. Institut für Physiologische Zoologie der Johannes Gutenberg-Universit?t, Mainz, Germany (FRG)
|
| |
Abstract: | Heart beats of unrestrained Carcinus maenas L. have been recorded by means of aspiration electrodes. The heart rate shows a clear dependence upon the oxygen content of the sea water under otherwise constant conditions. There is a high degree of correlation between heart rate and oxygen concentration in the range between 0 cm3 and ca. 6 cm3 O2/I sea water. From this point upwards no further dependence could be found. Very low (beneath 0.5 cm3 O2/I water) and very high (over 12 cm3 O2/I water) concentrations lead to arrhythmia and often to long lasting intervals in the heart beats. It is suggested that this correlation is due to the oxygen-dependent excitability of the neurones generating the beats in the neurogenic hearts of crustaceans. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |