- AutorIn
- Thorid Zierold
- Titel
- Morphological variation and genetic diversity of Triops cancriformis (Crustacea: Notostraca) and their potential for understanding the influence of postglacial distribution and habitat fragmentation
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:swb:105-7497276
- Datum der Einreichung
- 05.04.2006
- Datum der Verteidigung
- 06.07.2006
- Abstract (EN)
- Triops cancriformis (Crustacea: Notostraca) occurs in ephemeral habitats like rain pools or floodplain pools distributed over a large geographical range. The named habitats are disturbed by human impacts and, consequently, T. cancriformis is endangered throughout its distribution range. In the present thesis the populated habitats and threats are characterised and further morphological and genetic variations detected among and within European populations are reported. On the basis of recent investigations it is shown that T. cancriformis subspecies separation is hampered by an individual variability which points to the necessity of species revision. The analysis of mitochondrial gene sequence data suggests that the species has colonised most of Europe very recently. The advantage of a complex reproductive strategy in T. cancriformis in this process is discussed. The population structure resolved with nuclear DNA markers highlights that there is low allelic diversity among and within populations compared to other Branchiopoda (Daphnia). By means of the present study it can be shown that habitat conservation is most important to protect T. cancriformis.
- Freie Schlagwörter (DE)
- Rückenschaler, Populationsgenetik, Morphologie <Biologie>
- Freie Schlagwörter (EN)
- population genetics, phylogeography, microsatellite analysis, cytochrom c oxidase I analysis, 16S rDNA analysis, habitat characteristic, ephemeral water bodies, tadpole shrimps, living fossil
- Klassifikation (DDC)
- 590
- Klassifikation (RVK)
- WG 5650
- GutachterIn
- Prof. Dr. Hermann Heilmeier
- Prof. Dr. Michael Schlömann
- Prof. Dr. Bernd Schierwater
- BetreuerIn
- Prof. Dr. Hermann Heilmeier
- Dr. M. Mau
- Den akademischen Grad verleihende / prüfende Institution
- TU Bergakademie Freiberg, Freiberg
- URN Qucosa
- urn:nbn:de:swb:105-7497276
- Veröffentlichungsdatum Qucosa
- 20.07.2009
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch