Myxobolus platanus n. sp. (Myxosporea, Myxobolidae), a parasite of Mugil platanus Günther, 1880 (Osteichthyes, Mugilidae) from Lagoa dos Patos, RS, Brazil

Abstract

Myxobolus platanus n. sp. infecting the spleen of Mugil platanus Günther, 1880 (Osteichthyes, Mugilidae) from Lagoa dos Patos, Brazil is described The parasites formed round or slightly oval whitish plasmodia (about 0.05-0.1mm in diameter) on the surface of the organ. The spores were round in frontal view and oval in lateral view, 10.7µm (10-11) long, 10.8µm (10-11) wide and 5µm thick, and presented four sutural marks along the sutural edge. The polar capsules, equal in size, were prominent, surpassing the mid-length of the spore, and were oval with the posterior extremity rounded, and converging with their anteriorly tapered ends. They were 7.7µm (7-8) long and 3.8µm (3.5-4) wide. A small intercapsular appendix was present. The polar filament formed five to six coils obliquely placed to the axis of the polar capsule. No mucous envelope or distinct iodinophilous vacuole were found.

Metazoan parasites of Geophagus brasiliensis (Perciformes: Cichlidae) in Patos lagoon, extreme south of Brazil

“…In the area of the estuary, parasitological studies have been conducted on Micropogonias furnieri (Desmarest, 1823) (VELLOSO & PEREIRA, 2010), Paralichthys orbignyanus (Valenciennes, 1839) (VELLOSO et al, 2005) and Mugil platanus (Günther, 1880) (EIRAS et al, 2007).…”

Light and electron microscopy of Myxobolus sciades n. sp. (Myxozoa), a parasite of the gills of the Brazilian fish Sciades herzbergii (Block, 1794) (Teleostei: Ariidae)

“…Most of the Brazilian Myxobolus species have been described based on only light microscopy descriptions and diagrammatic drawings (Walliker 1969, Kent & Hoffman 1984, Molnár & Békési 1993, Gioia & Cordeiro 1996, Molnár et al 1998, Cellere et al 2002, Eiras et al 2005a, 2007, Martins & Onaka 2006; even fewer have been described using light and ultrastructural observations (Casal et al 1996, 2002, 2009, Tajdari et al 2005 In this paper, we describe light and ultrastructural data for a new myxosporidian species found in the gill of the teleost fish, Sciades herzbergii, which was collected from a river Northeast of Brazil.…”

“…In a recent synopsis, 744 Myxobolus species have been identified parasitizing fish (Eiras et al 2005b) and more recently, 792 named species of the same genus, including seven infecting amphibians, have been described (Lom & Dyková 2006). However, this number has been successively increasing over the years by the continuing description of new species in different countries, including Brazil (Casal et al 2006, Martins & Onaka 2006, Eiras et al 2007, Adriano et al 2009a, b, Azevedo et al 2009).Most of the Brazilian Myxobolus species have been described based on only light microscopy descriptions and diagrammatic drawings (Walliker 1969, Kent & Hoffman 1984, Molnár & Békési 1993, Gioia & Cordeiro 1996, Molnár et al 1998, Cellere et al 2002, Eiras et al 2005a, 2007, Martins & Onaka 2006; even fewer have been described using light and ultrastructural observations (Casal et al 1996, 2002, 2009, Tajdari et al 2005 In this paper, we describe light and ultrastructural data for a new myxosporidian species found in the gill of the teleost fish, Sciades herzbergii, which was collected from a river Northeast of Brazil. …”

“…In a recent synopsis, 744 Myxobolus species have been identified parasitizing fish (Eiras et al 2005b) and more recently, 792 named species of the same genus, including seven infecting amphibians, have been described (Lom & Dyková 2006). However, this number has been successively increasing over the years by the continuing description of new species in different countries, including Brazil (Casal et al 2006, Martins & Onaka 2006, Eiras et al 2007, Adriano et al 2009a, b, Azevedo et al 2009). …”

“…Most of the Brazilian Myxobolus species have been described based on only light microscopy descriptions and diagrammatic drawings (Walliker 1969, Kent & Hoffman 1984, Molnár & Békési 1993, Gioia & Cordeiro 1996, Molnár et al 1998, Cellere et al 2002, Eiras et al 2005a, 2007, Martins & Onaka 2006; even fewer have been described using light and ultrastructural observations (Casal et al 1996, 2002, 2009, Tajdari et al 2005, Adriano et al 2009a) as well as molecular analyses (Adriano et al 2009b). However, some specific aspects of the histopathology have been simultaneously reported by invasion of different organs; Myxobolus spp most frequently infects the gills of fish (Molnár & Békési 1993, Molnár 2002, Eiras et al 2005a, Casal et al 2006, Lom & Dyková 2006, Adriano et al 2009a, Azevedo et al 2009.…”