الفهرس 
General introductionOnly 14 pages are availabe for public view
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Abstract
It has been established for the first time that the important freshwater food fish Cyprinus carpio, inhabiting Lake ElManzala in Egypt, is infected by two species of the monogenean gill parasites Dactylogyrus anchoratus Kulwiec (1927) and Dactylogyrus extensus Mueller and Van Cleave (1932) syn: Dactylogyrus solidus Achmerov (1932). They have not previously been recorded in Egypt, although they are well known in other parts of the world. The anterior adhesive apparatus and the sclerites of the posterior attachment apparatus or the haptor of D. anchoratus have been studied with light and phasecontrast microscopy. D. extensus has been redescribed and detailed studies of the anterior adhesive apparatus, haptoral sclerites, posterior body glands and muscles have been made with the TEM, SEM as well as fluorescent and confocal laser scanning microscopes. The anterior adhesive apparatus of D. anchoratus was found to consist of two kinds of gland cell, one (G1) producing rodshaped bodies (S1) and the other (G2) producing electrondense granular bodies (S2). In addition, D. extensus has a third kind of gland cell (G3) producing electronlucent granular secretory bodies (S3). The possible functions of these secretions are discussed. The ducts of these gland cells extend anteriorly and converge on and open into three adhesive sacs situated ventrally, two in the inner head lobe and one in the outer lobe. The adhesive sacs are lined by two kinds of tegument (t1 and t2) and the narrow sac opening is lined by an extension of the general body tegument. Only t1 has microvilli