The formation of the epicuticle and associated structures inOniscus asellus (Crustacea, Isopoda)
Autor: | D. M. Holdich, J. B. Price |
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Rok vydání: | 1980 |
Předmět: | |
Zdroj: | Zoomorphologie. 94:321-332 |
ISSN: | 1432-234X 0340-6725 |
Popis: | The integument of the woodlouse,Oniscus asellus, consists of a two-layered epicuticle, a largely lamellate procuticle — itself divided into two regions (pre-and postecdysial cuticles), and the epidermis. At the initiation of new cuticle production the epidermal cells become vacuolated and retract away from the cuticle. Apolysis occurs immediately after the cessation of postecdysial cuticle production. The formation of the epicuticle is unique among the arthropods since material aggregates along the distal epidermal membrane. By indenting, doubling back on itself, and incorporating septa, the epicuticle forms surface structures such as plaques and tricorns. |
Databáze: | OpenAIRE |
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