RESEARCH PAPER
Age structure and growth rate of Zonitoides nitidus (O. F. Müller, 1774) (Gastropoda: Pulmonata: Gastrodontidae)
 
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Department of Invertebrate Systematics and Ecology, Institute of Biology, Wrocław University of Environmental and Life Sciences, Poland
 
 
Submission date: 2010-06-21
 
 
Acceptance date: 2010-12-08
 
 
Publication date: 2011-03-11
 
 
Corresponding author
Elżbieta Kuźnik-Kowalska   

Department of Invertebrate Systematics and Ecology, Institute of Biology, Wrocław University of Environmental and Life Sciences, Kożuchowska 5b, 51-631 Wrocław, Poland
 
 
Folia Malacol. 2011;19(1):51-53
 
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ABSTRACT
Growth rate and age structure of Zonitoides nitidus (O. F. Müller) were studied based on monthly samples from a population in Muszkowice (SW. Poland). The life cycle is probably a three-year cycle: juveniles hatch from June till October, and winter over at a size of 2.0–4.5 whorls. The growth rate is ca. 0.5–1.0 whorl/month.
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ISSN:1506-7629
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