peritrophic membrane

peritrophic membrane

an inner lining of the gut found in some insects and crustaceans that may serve to protect the gut cells from injury by food particles. There is evidence that in insects harmful substances may be removed from the body by extrusion of the membrane from the anus.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Along the entire midgut, a peritrophic membrane consisted of acellular layers is observed in the lumen (Figure IA, B).
Dynamic role of microvilli in peritrophic membrane formation.
(1977), by studying the effects of DFB on the production of peritrophic membrane in L.
The effects of a chitin inhibitor -Dimilin- on the production of peritrophic membrane in the locust, Locusta migratoria.
It might be speculated that feeding on treated leaves might have led to the destruction of peritrophic membrane which ultimately lead the larvae being not able to feed well and result in slow growth rate.
Since the proventriculus in the larvae of mosquitoes and Drosophila secretes the peritrophic membrane (Wigglesworth 1931; Rizki 1956), it is suggested that in these insects its usual role in breakdown of food material has been relegated to the elaborate pharyngeal armature.
A single layer of more or less columnar epithelial cells followed by a peritrophic membrane lines the midgut lumen (Fig.
The apical portion of digestive cells presents bubbles that release secretions together with the part of the cytoplasm immediately below the peritrophic membrane (Figs.
The columnar cells, especially in the anterior midgut region, are considered responsible for digestive enzymes and peritrophic membrane secretions, besides acting in the absorption of final digestion products (Santos et al., 1984; Lehane and Billingsley, 1996; Jordao et al., 1999).
The midgut of hymenopterans is a relatively long tube, lined with a single layered epithelium, 2 layers of circular (inner) and longitudinal (outer) muscles, and a peritrophic membrane enclosing the food (Snodgrass 1935; Serrao & Cruz-Landim 1996b).