Scanning and transmission electron microscopy of the tegument of Paranaella luquei Kohn, Baptista-Farias & Cohen, 2000 (Microcotylidae, Monogenea), parasite of a Brazilian catfish, Hypostomus regani

Abstract

The surface topography and ultrastructure of the tegument of Paranaella luquei Kohn, BaptistaFarias & Cohen, 2000, a

The surface topography of Eudiplozoon nipponicum (Monogenea) developmental stages parasitizing carp (Cyprinus carpio L.)

“…nigromaculatus [21], Gotocotyla secunda, G. bivaginalis [22], Bifurcohaptor lucknowensis [23], Diplozoon lucknowensis [24], Allodiscocotyla diacanthi [25], Polystoma integerrimum [26] or Paranaella luquei [27]. The family Diplozoidae is very unique among polyopisthocotyleans.…”

Light and electron microscopy of Paranella diplodae N. SP. (Polyopisthocotylea;Microcotylidae; Monogenea ) from some Red Sea Teleost fishes in Egypt

“…On the other hand, there is no significance difference between the measurements of the opisthohaptoral clamps of the present parasite and that of recorded by Kohn et al 2000, (Paranaella luquei). Despite the fact that, the relative size of the opisthohaptor of the parasite under discussion is approximately 1/3 of the total body size, thus, it is relatively larger than that measured by Cohen et al (2001) for Paranaella luquei (approximately 1/6 of the whole body length). In addition, the number of clamps of the present parasite is less than that of Paranaella luquei (right side 32 vs 41 and left side 28 Vs 35, respectively).…”

“…Monogenea is the most common and abundant ectoparasitic flukes of fish, with greater diversity of species widely distributed in the tropics than in the moderate region of the world (Rohde, 1982;Ramasamy et al, 1995). Most of them are parasites mainly on the gills of fish and may be exhibit both host and site specificity (Cohen et al, 2001) causing economic losses and become pathogenic in some cases (Paperna et al, 1984).…”

Surface Topography of the Anterior Adhesive Apparatus of the Gill Monogenean Parasite Diplectanum sp. diesing, 1858, with some Surface Criteria

“…is amplified by microvilli, feature which is also characteristic of the tegument covering the adhesive areas of Diplectanum aequanus [19]. These microvilli may increase the surface area of the worm, suggesting that, on morphological grounds, the tegument has potential as a site for metabolic exchanges into and out of the worm [1,[20][21][22] and absorption of micromolecular nutrients from the surrounding environment [23] also, might support a mat of mucus that might afforded osmoregulatory or antibacterial protection [22,24]. In this way, experimental studies by [25] demonstrated that Diclidophora is capable of trans-tegumental absorption of certain neutral amino acids.…”