epicuticle


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Related to epicuticle: Procuticle

epicuticle

[¦ep·ə′kyüd·i·kəl]
(invertebrate zoology)
The outer, waxy layer of an insect cuticle or exoskeleton.
References in periodicals archive ?
2007, "Biochemistry of insect epicuticle degradation by entomopathogenic fungi," Comp.
The fracture part has a large fiber-chip and tear where the matrix of the elytra epicuticle broke along the crack direction but did not completely separate.
In addition, it was found that the epicuticle of elytra dragged along the crack direction on the fracture part, causing the fiber to separate from the substrate and many fiber films to be pulled out and broken.
It consists of the lamellate endocuticle and epicuticle layers, which become more discernible in the lateral regions (Fig.
The arrangement of cuticular layers in the pharyngeal ribs with lamellate endocuticle forming the base and exocuticle with trabeculae and spaces forming the core and covered by the thin epicuticle lining the luminal surface, appear to resemble the design of bone structure of vertebrates and may provide mechanical support to them.
Keywords: Fluorescence, scorpion, epicuticle, exomorphology, images
Furthermore, lipase activity, degrading the epicuticle lipid layer, may play a key role in regions with high disease prevalence.
Histologically, the lesions present as a degradation of the epicuticle and exocuticle.
Injury to the epicuticle covering this mineralized surface unleashes an immediate efflux of carbonate, accentuating the normal alkalinity of an antimicrobial unstirred layer.
In addition to providing a strong physical barrier to infection through the combination of an outermost wax layer covering the epicuticle followed by a calcified endocuticle composed of chitin and an organic matrix (Aiken & Waddy 1980, Neville 1975), lobster shells demonstrate a series of dynamic immune responses to bacterial infection.
The innermost layers of the epicuticle consist of an outer and an inner porous trilaminarate, membranous tissue.
4] is the start of the intermolt period and in D, there is a transition from intermolt to premolt or proecdysis, involving retraction of the epidermis (apolysis), dissolution of the membranous layer, absorption of calcium from the endocuticle and deposition of new epicuticle and exocuticle; and in stage E, ecdysis takes place (reviewed by Smolowitz et al.