Müller [1] was the first to describe a monogenean, collected from the skin of the halibut (Hippoglossus hippoglossus). However, he regarded the parasite as a leech and named it Hirudo hippoglossi. It was not until 1858 that its status as a monogenean was established by van Beneden [2] and named Epibdella (now Entobdella) hippoglossi. Van Beneden published a detailed and accurate description of ...

Grass carp is an herbivorous species, which is actually popular in Iran. Monogenean parasites, particularly members of the family Dactylogyridae, have been one of the main causes of mortalities in Iranian fish farms and therefore they have been subject of many studies in Iran. The main aim of the present study was to describe morphological and molecular characteristics of monogenean parasites r...

The susceptibility of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) to the monogenean Discocotyle sagittata in the United Kingdom was assessed by experimental infection of naive fish. One month postinfection with 100 oncomiracidia/host, brown trout harbored significantly lower burdens (27.7 worms/host +/- 4.13 SE) than rainbow trout (47.8 worms/host +/- 3.90; P = 0.002). Th...

Monogenea is one of the most species-rich groups of parasitic flatworms worldwide with many species described from African freshwater fish. Little is known about the diversity and geographic distribution of monogenean parasites infesting the Red Sea fishes in Egypt. In the present study, a total of 45 specimens of the brushtooth lizardfish Saurida undosquamis (family: Synodontidae) and...

The present paper aims to study the occurrence of monogenean species infecting gills wild Hemichromis elongatus (Pisces). Fish specimens were caught with nets, fixed in 10% formalin and then dissected. Monogenean found removed under a stereomicroscope needle, mounted between slide cover slip drop hematoxylin eosin. Among five parasite found, only O. voltaensis C. euzeti infesting their host alo...

Monogenea is one of the most species-rich groups of parasitic flatworms. Research on this taxon in Africa has been recently intensified. For example, already more than 100 nominal species belong to Cichlidogyrus, a genus mostly occurring on cichlids. Twenty-two of these were described from Lake Tanganyika which is a biodiversity hotspot in which many vertebrate and invertebrate taxa underwent u...

The diversity and abundance of parasites vary widely among populations of the same host species. These infection parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regarding the influence of host population density: parasite abundance and parasite species richness a...

The monogenean ectoparasite genera Dactylogyrus and Gyrodactylus are hyperdiverse, and yet monogenean communities infecting freshwater fish in the northern Holarctic are variable and often impoverished. This is a result of extinctions during periods of glaciation when the host fishes experienced range contraction. Fish species recolonised northern Europe by one of three routes; stenohaline fish...

This article has no abstract.

biological indicators are species that can be employed to monitor environmental quality and ecosystem health. different groups of organisms such as plants, animals, bacteria and parasites regularly produce certain molecular signal in response to changes in their environmental milieu. parasites are important tools for providing wealth of information on physicochemical quality, environmental stre...