Variation in spermathecal morphology and storage of spermatozoa in the simultaneously hermaphroditic land snail Arianta arbustorum (Gastropoda: Pulmonata: Stylommatophora)

Librería: ConchBooks, Harxheim, AlemaniaConchBooks

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Descripción del artículo del vendedor

Morphological investigations showed that the sperm storage organ (spermatheca) of the simultaneously hermaphroditic land snail Arianta arbustorum consists of 28 tubules with a common entrance. Sites of sperm storage were examined in snails that mated once (eight individuals) or twice (ten individuals). After one year during which the snails laid eggs only one individual of those which copulated once had some spermatozoa in one spermathecal tubulus. In four snails of those specimens which copulated a second time after one year, a part of the tubules was filled with spermatozoa while in the remaining six animals no spermatozoa were found in the spermatheca, although they received a spermatophore 5 days before fixation. In these latter snails spermatozoa were found exclusively in the sperm-digesting bursa copulatrix. This suggests that the female reproductive system of A. arbustorum may possibly be able to control fertilization by a selective storage of spermatozoa from different mating partners. 9 pp., 5 figs, 2 tabs, 4.…

N° de ref. del artículo W25563

Detalles bibliográficos

Título
Variation in spermathecal morphology and storage of spermatozoa in the simultaneously hermaphroditic land snail Arianta arbustorum (Gastropoda: Pulmonata: Stylommatophora)
Autor
Haase, M. & Baur, B.
Año de publicación
1995

ConchBooks

Harxheim, Alemania

Vendedor de 4 estrellas

Vendedor de IberLibro desde 1 de marzo de 2007

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Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

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Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology