RESEARCH PAPER
Gametogenic cycle in Vertigo pusilla O. F. Müller, 1774 (Gastropoda: Pulmonata: Vertiginidae)
 
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1
Department of General Zoology, Zoological Institute, Wrocław University, Poland
2
Museum of Natural History, Wrocław University, Poland
Submission date: 2005-04-04
Acceptance date: 2005-05-15
Publication date: 2020-07-03
 
Folia Malacol. 2005;13(1):43–47
 
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ABSTRACT
Gonads of V. pusilla at various growth stages were examined with standard histological methods. The first gonial cells appeared at the stage of 3.3 whorls: few and poorly developed gonad vesicles contained fine mitotically dividing cells and cells in meiotic prophase, with the first growing oocytes in the peripheral parts of the vesicles. At 4-whorl stage the oocytes entered vitellogenesis and increased in volume. In subadult individuals the oocyte volume and the gonad volume increased considerably; besides the advanced vitellogenic oocytes new oocytes appeared, the number of spermatids increased and the first spermatozoa were observed. The gonad of pre-reproductive adults contained numerous late-vitellogenic oocytes, young growing oocytes and many spermatozoa. In post-reproductive individuals there were no mature oocytes, spermatozoa were few, but the presence of young oocytes and mitotically dividing cells indicated resumption of gamete production.
 
CITATIONS (3):
1.
Delayed maturation in the genus Vestia P. Hesse (Gastropoda: Pulmonata: Clausiliidae): a model for clausiliid lifecycle strategy
T. Maltz, A. Sulikowska-Drozd
Journal of Molluscan Studies
 
2.
Contribution to the biology of ten vertiginid species
Stanisław Myzyk
Folia Malacologica
 
3.
Major fitness components in life history of euryoecious land snail Trochulus hispidus (Linnaeus, 1758) (Gastropoda: Hygromiidae)
Małgorzata Proćków, Elżbieta Kuźnik-Kowalska
Folia Malacologica
 
eISSN:2300-7125
ISSN:1506-7629