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Stylet formation in Anisus vortex (Linnaeus, 1758) (Gastropoda: Planorbidae)
Author(s) -
Soldatenko E.V.,
Shatrov A.B.,
Shumeev A.N.
Publication year - 2011
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.2010.00471.x
Subject(s) - stylet , biology , planorbidae , anatomy , gastropoda , zoology , pulmonata
Soldatenko, E.V., Shatrov A.B. and Shumeev, A.N. (2010). Stylet formation in Anisus vortex (Linnaeus, 1758) (Gastropoda: Planorbidae). — Acta Zoologica (Stockholm) 92 : 377–382. The detailed stylet morphology and stylet formation during postembryonic development in the pulmonate mollusk Anisus vortex (Linnaeus, 1758) are described using scanning electron microscopy (SEM) and histological methods. The stylet begins to develop in the lumen of the copulatory apparatus and then assumes its final position inside the penial sac. The developing stylet lying between two epithelial layers is undergoing chitinization mediated by secretion of the secretory epithelium of the penial sac that completes on the 80–120th day after hatching of mollusks from the egg masses. The stability of the characters of stylet morphology and their significance for the systematics of Planorbidae are discussed.