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Environmental pollution that renders waters along the coastline and beaches unsatisfactory for use by the general public has become a global health problem. This study was conducted to examine the effects of pollution of beach waters and sediment at seven selected locations receiving land drainage along a 45-km stretch of the east coast near Visakhapatnam,… (More)
The gall-bladders of four species of gadid fish from the North Sea and Norwegian waters were examined for myxosporeans. The host species were cod Gadus morhua L. (350 examined), haddock Melanogrammus aeglefinus (L.) (592 examined), saithe Pollachius virens (L.) (205 examined) and whiting Merlangius merlangus (L.) (368 examined). Four species of myxosporeans… (More)
A field study was conducted to evaluate the protozoan colonization patterns on artificial substrates in relation to organic pollution within a tropical harbour. The composition of protozoans and their succession rates on artificial substrates(polyurethane foam units) were compared between two field stations(A and B), and their presence were considered with… (More)
Studies (1996–'99) on the community structure of a mangrove forest in Coringa Wildlife Sanctuary in the Godavari estuarine system on the East Coast of India revealed altogether 15 species of mangroves represented by 8 families and 10 genera besides, 6 associate plant species and 6 of marshgrass. Description of forest structure (PCQM method) included… (More)
A synopsis of the species of Thelohanellus Kudo, 1933 (Myxozoa: Myxosporea: Myxobolidae) is presented. It includes a total of 108 nominal species. For each species, the most relevant morphological and morphometric characteristics are provided, together with data on the type-host and locality, the site of infection within the host and the original references.
A new genus and species of myxozoan parasite,Renispora simae, is described from the gall-bladder of the nototheniid fishPatagonotothen sima (Richardson). Four of 12 fish caught in Stanley harbour in the Falkland Islands in May, 1993 were infected. The new genus is placed in the family Alatosporidae and differs from other genera in this family by the shape… (More)
During a survey of the parasite fauna of the euryhaline notothenioid fish Eleginops maclovinus (Cuvier) caught in brackish water creeks in the Falkland Islands, small white cysts were observed in the mesenteries and on the surfaces of the visceral organs and heart. On dissection these proved to be plasmodia of a species of the myxosporean genus Henneguya.… (More)
Myxosporeans are among the most common parasites of marine fish. Their economic importance is mainly as pathogens of both wild and farmed fish, but they have also been used as biological tags in population studies of their fish hosts. Here we review the literature and show the distribution of different families of Myxosporea infecting marine fishes in the… (More)
A new myxosporidian parasite is reported from the fresh-water fish,Esomus sp. (fam. Cyprinidae). It is characterised by the presence of one normal polar capsule with enclosed polar filament and a second rudimentary polar capsule. It has an iodinophilous vacuole in the sporoplasm. Since it does not fit the genusMyxobolus, which has two polar capsules and an… (More)
A new species ofUnicauda, U. andhrae (Myxosporidia) found in the mucus covering the gills ofOphicephalus gachua is described and its systematic position discussed. The parasite does not form cysts and is not histozoic. The mucus in the infected fish was very viscous and grey in colour.