Spring migration of amphibians is often studied phenomenon. Individuals who wake up in the spring after winter hibernation leave their winter shelters and move into nearby water reservoirs to mate here. While the course of the reproduction is well documented a terrestrial stage of amphibian life cycle is poorly known. This work deals with the influence of exogenous factors on spring migration of alpine newt Ichthyosaura alpestris (Laurenti 1768) (formerly Mesotriton alpestris, Triturus alpestris) and is especially focused on the lunar cycle.
The null hypothesis was formulated as follows: The number of newts arriving into the water reservoir during the spring migration is independent on the phase of the lunar cycle. Spring migration of alpine newts was monitored during two years at two localities. Males on location Čachnov mostly migrated on 25th day of the lunar cycle while females on this location mostly migrated on 26th day of the lunar cycle. Males on the location Hylváty mostly migrated on 21st day of the lunar cycle while females migrated evenly throughout the entire cycle. Based on obtained data it can be assumed that there is a correlation between the number of migrating individuals and the lunar cycle. Probably the main reason for this is the intensity of light reaching the earth´s surface which makes it easier for amphibians to navigate during the spring migration.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:257007 |
| Date | January 2016 |
| Creators | Michalcová, Pavlína |
| Contributors | Kopecký, Oldřich, Vojar, Jiří |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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