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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A neural network in the pond snail, Planorbis corneus : electrophysiology and morphology of pleural ganglion neurons and their input neurons /

Yao, Yong. January 1986 (has links)
Diss. Naturwiss. Bern (kein Austausch).
2

Taxonomická revize rodu Anisus v České republice (Mollusca: Planorbidae) / Taxonomic revision of the genera Anisus in the Czech Republic (Mollusca: Planorbidae)

Zavoral, Tomáš January 2010 (has links)
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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