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Presence and development of a sensory formation in the eyestalk of the crayfish, Astacus leptodactylus (Nordmann, 1842), during its embryonic, larval and adult life

✍ Scribed by François van Herp; Chantal Bellon-Humbert; Adrianus J. M. De Groot

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 1004 KB
Volume: 161
Category: Article
ISSN: 0362-2525
DOI: 10.1002/jmor.1051610104

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✦ Synopsis

Abstract

A sensory papilla is described in the eyestalk of the crayfish Astacus leptodactylus during the last embryonic stages and during larval stages by light microscopy. This region was also investigated with the scanning electron microscopy, which showed sensory hairs in the postmolt adult; they disappear during intermolt and premolt. Simultaneous cyclic changes in hair papillae are observed in the hypodermis. The possibility of a chemoreceptive function is discussed.

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