Permeability of the peritrophic membrane in the larvae of Aedes aegypti.

Autor(es): Zhuzhikov D P

Resumo: Selective ionic permeability, grade of permeability, coefficient of filtration, and reflective coefficient were studied on isolated peritrophic membrane and the effective radius of the pore membrane was calculated. On the basis of the criteria obtained experimentally, conclusions have been drawn about the nature of the permeability of the peritrophic membrane for different substances. Moreover, the size of the colloidal gold particles permeating through the intact membrane of live larvae has also been determined. The results obtained show that the peritrophic membrane, by means of complex interaction with the substances permeating through it, acts as a unique ultra-filter which holds back within the trophic cavity the complex food substances while allowing the smaller molecules resulting from hydrolysis an easy passage towards the epithelium.

Imprenta: Journal of Insect Physiology, v. 16, n. 6, p. 1193-1202, 1970

Identificador do objeto digital: 10.1016/0022-1910(70)90209-X

Descritores: Aedes aegypti - Cell

Data de publicação: 1970