RESEARCH PAPER
Bithynia troschelii (Paasch,1842), a giant of unknown origin?
 
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Department of Malacology, Institute of Zoology, Jagiellonian University, Kraków, Poland
Submission date: 2004-04-15
Acceptance date: 2004-07-02
Publication date: 2020-07-13
 
Folia Malacol. 2004;12(3):137–139
 
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ABSTRACT
Bithynia troschelii (Paasch, 1842) and B. leachii (Sheppard, 1823) from 3 and 4 German localities, respectively, were studied by means of cellulose acetate gel allozyme electrophoresis, to compare 23 enzyme systems represented by 34 loci. In none of the loci a fixed difference was found between the two taxa. B. troschelii is much bigger than B. leachii; it also differs from the latter in the flagellum/penis length ratio. B. troschelii is rarer and its range narrower than that of B. leachii, in which it is contained. The results suggest a very close relationship between the taxa, but due to the striking size difference, representatives of one taxon could hardly mate with those of the other, so their reproductive isolation should be efficient. Thus B. troschelii is most probably a distinct species separated from B. leachii very recently, probably by saltational speciation.
 
CITATIONS (2):
1.
A new record of Bithynia troschelii (Paasch, 1842) (Gastropoda: Bithyniidae) from two temporary ponds in Warsaw (Poland)
Andrzej Kołodziejczyk, Krzysztof Lewandowski
Folia Malacologica
 
2.
Water bodies of a city park as habitats of rare, protected and alien species of molluscs
Andrzej Kołodziejczyk, Krzysztof Lewandowski
Folia Malacologica
 
eISSN:2300-7125
ISSN:1506-7629