Umfang:
108 Seiten
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Illustrationen, Diagramme, Karten
Inhalt:
The European fire-bellied toad (Bombina bombina) is regarded as one of the most threatened species of amphibians in central Europe and is particularly affected by environmental perturbations. During the last decades population numbers in Germany have declined drastically due to pollution, eutrophication and habitat fragmentation. Illegal translocations resulted in an introgression from southern genotypes (probably Austrian) into three local Bombina populations (Northern Germany and Southern Sweden) belonging to the northern lineage of the species. Interestingly, these populations show high frequencies of allochthonous (non-local) alleles at multiple loci and outperform the autochthonous populations in terms of their body condition. Over a time period of ten years, I could show that the Southern lineage haplo- and genotypes are still present in the North and that frequencies of introgressed haplotypes in allochthonous populations did not increase over time. However, the introgression itself expanded towards adjacent populations while ...
Anmerkung:
kumulative Dissertation
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Dissertation Universität Potsdam 2020
Sprache:
Englisch
Schlagwort(e):
Hochschulschrift
Mehr zum Autor:
Cahsan, Binia de
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