Title (eng)

In search of the glow-Three-dimensional reconstruction of <i>Latia neritoides</i> with specific focus on the mantel cavity (Mollusca; Gastropoda; Hygrophila)


S. Greistorfer   University of Vienna

I. Miller   University of Veterinary Medicine Vienna

J. von Byern   University of Vienna

V. B. Meyer-Rochow   Oulu University / Andong National University

S. H. Geyer   Medical University of Vienna

W. J. Weninger   Medical University of Vienna

G. Steiner   University of Vienna



Description (eng)

The freshwater snail Latia neritoides occurs in certain streams and lakes of New Zealand's North Island. It defends itself against predators with a unique mechanism - the release of sticky, glowing mucus. Two possible origins of this defence mucus had earlier been suggested: the foot and the pneumostome area. After examining the glandular system of the foot in a previous study, in the present study we examined the general morphology of L. neritoides, focusing on the mantle cavity. With the first complete 3D model of L. neritoides now available, it is possible to evaluate previous morphological studies and to give non-specialists a better understanding of the soft part anatomy of this fascinating gastropod. As a by-product of this, we also compared the capabilities of mu-CT and HREM on a methodological level. We characterized the two most common gland types in the mantel cavity (Lmcg1/Lmcg2) on the basis of their ultrastructure. They are present in large numbers and, therefore, regarded as likely candidates for being the producers of one or more components of the defence mucus. This notion was confirmed by histochemical analyses of Lmcg1 and Lmcg2 and other gland types in L. neritoides.

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Land Snail; Bioluminescence; Pulmonata; Limpets; System; Slug

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o:605 Publications / University of Veterinary Medicine Vienna