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Phylogeny and ecology of family Planorbidae
Běláčová, Kateřina ; Juřičková, Lucie (advisor) ; Lorencová, Erika (referee)
Phylogenetics is a sub-discipline of biology which focuses on classification of organisms based on their evolutionary development. Morphological and anatomical features have been traditionally used in reconstruction of phylogeny but with the onset of modern technology their role has been partly taken up by molecular analysis. Family Planorbidae is a very diverse group that includes species with very different morphology. This work aims to provide an overview of the phylogeny within Planorbidae family and discuss the importance of the individual features used in determination based on the results of the published studies.
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Taxonomic revision of the genera Anisus in the Czech Republic (Mollusca: Planorbidae)
Zavoral, Tomáš ; Juřičková, Lucie (advisor) ; Beran, Luboš (referee)
The aim of this work is to critically review the anatomical and morphological characters being currently used in the determination of Central European species of the genus Anisus and to confront them with molecular characters. For the molecular analysis mitochondrial genes for 16S rRNA and cytochrome c oxidase - subunit I (COI) were used. DNA analysis showed that known species occuring in the Czech Republic form well distinguishable genetic lines. Subsequent revisions of the anatomical characters of these lines have proven that these characters are due to their variability not suitable for determination, especially for the differentiating of the species A. spirorbis and A. leucostoma. The conchological characters have proven more suitable, especially the ratio of the size of the last and penultimate whorl. With the help of this character, we can safely determine a population within which there are transitional forms in other morphological and anatomical characters.
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Phylogeny and ecology of family Planorbidae
Běláčová, Kateřina ; Juřičková, Lucie (advisor) ; Lorencová, Erika (referee)
Phylogenetics is a sub-discipline of biology which focuses on classification of organisms based on their evolutionary development. Morphological and anatomical features have been traditionally used in reconstruction of phylogeny but with the onset of modern technology their role has been partly taken up by molecular analysis. Family Planorbidae is a very diverse group that includes species with very different morphology. This work aims to provide an overview of the phylogeny within Planorbidae family and discuss the importance of the individual features used in determination based on the results of the published studies.
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Taxonomic revision of the genera Anisus in the Czech Republic (Mollusca: Planorbidae)
Zavoral, Tomáš ; Juřičková, Lucie (advisor) ; Beran, Luboš (referee)
The aim of this work is to critically review the anatomical and morphological characters being currently used in the determination of Central European species of the genus Anisus and to confront them with molecular characters. For the molecular analysis mitochondrial genes for 16S rRNA and cytochrome c oxidase - subunit I (COI) were used. DNA analysis showed that known species occuring in the Czech Republic form well distinguishable genetic lines. Subsequent revisions of the anatomical characters of these lines have proven that these characters are due to their variability not suitable for determination, especially for the differentiating of the species A. spirorbis and A. leucostoma. The conchological characters have proven more suitable, especially the ratio of the size of the last and penultimate whorl. With the help of this character, we can safely determine a population within which there are transitional forms in other morphological and anatomical characters.
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