Hydrobioidea of Poland (Prosobranchia: Gastropoda)

Andrzej Falniowski, e-mail: andrzej.falniowski@uj.edu.pl

Department of Malacology, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Cracow, Poland

The paper is devoted to the Polish Hydrobioidea, which have not been studied so far. The vagueness of both systematic position and relationships within the group is presented, as well as their general morphology and anatomy; the taxonomically useful characters are emphasized. Then there follows a comparative discussion of: reproduction, feeding, parasites and abnormalities caused by them, factors determining distribution (salinity, other elements of water chemism, temperature, water movement, environment stability, substratum, vegetation, competition, anthropopression), ways of expansion, distribution character and inhabited biotopes, origin, and techniques of collection, preservation and study. The key to the genera (Hydrobia, Bythinella, Marstoniopsis, Lithoglyphus and Potamopyrgus) and the keys to the species of Hydrobia and Bythinella are given. The author presents his own concept of speciation and systematics within Bythinella. All the 12 Polish hydrobioid species are described in respect of shell, forms, pigmentation, ctenidium, osphradium, male reproductive organs, penis, female reproductive organs and distribution.

Folia Malacologica (1987) 1: 11-122
First published on-line: 2016-12-30 00:00:00
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