| Autor: |
Mösslacher, F., Creuzé des Châtelliers, M. |
| Zdroj: |
Archiv für Hydrobiologie; December 1996, Vol. 138 Issue: 2 p187-198, 12p |
| Abstrakt: |
An epigean living population of A. aquaticus was compared with an unpigmented and eyeless subterranean dwelling population of the same species. The latter was found in a karstic system in south-east Romania. The oxygen consumption of individuals of both populations was investigated with a closed respirometer. Movement and feeding activities were studied in infrared light using a video camera technique. Compared to the hypogean population, the epigean one feeds actively, its movement is limited, it has a low respiration rate, and the individual oxygen consumption is higher. The differences in the respiration, movement and feeding patterns are discussed using field and laboratory data. We conclude that the two different populations of A. aquaticus showed special adaptations to the habitats within which they were found. With further morphological and genetic investigations this subterranean population of A. aquaticus could be described as a new taxon. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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