Trypanorhyncha cestodes of hygienic-sanitary importance infecting flounders Paralichthys patagonicus Jordan, 1889 and Xystreurys rasile (Jordan, 1891) of the Neotropical region, Brazil

Abstract

From February 2007 to July 2010, 27 specimens of Paralichthys patagonicus, and from September to December 2010, 30 specimens of Xystreurys rasile were purchased from fish markets in the municipalities of Cabo Frio and Rio de Janeiro, State of Rio de Janeiro, Brazil. The fishes were measured, necropsied, filleted, and further had their organs investigated. In P. patagonicus, 19 (70, 3 %) were parasitized with metacestodes of Trypanorhyncha species: Nybelinia erythraea, N. lingualis, Heteronybelinia nipponica, Pterobothrium crassicolle, Grillotia carvajalregorum, and Callitetrahynchus gracilis. In X. rasile, 17 (56, 6 %) were parasitized with metacestodes: N. erythraea, N. lingualis, H. nipponica, and G. carvajalregorum. The parasitological indices of prevalence, intensity, mean intensity, abundance, mean abundance, range of infection, and infection sites of each parasite species are presented. This is the first report of Trypanorhyncha cestodes parasitizing specimens of P. patagonicus and X. rasile. These cestodes were studied due to their importance during fish sanitary inspection, if one considers the harm that the repulsive aspect of infected meat causes to consumers.

Stocks and seasonal migrations of the flounder Xystreurys rasile as indicated by its parasites

“…Xystreurys rasile has a wide distribution in the south-eastern Atlantic Ocean, inhabiting waters at a depth range between 71 and 100 m, from Cabo Frio, State of Rio de Janeiro, Brazil to the latitude of 47 • S in Patagonia, Argentina (Figueiredo & Menezes, 2000;Díaz de Astarloa & Fabré, 2003). In the northern Argentine Sea, the water mass between these depths is known as continental shelf waters, which extends into the northern continental shelf from the south-west and occupies the central portion of the shelf.…”

“…Parasites have been used previously as tools for discriminating fish stocks between these two regions (Timi, 2007), as well as to trace migrations of silversides Odontesthes smitti (Lahille 1929) along Argentine coasts (Carballo et al, 2012). The parasite communities of X. rasile have been studied in coastal waters off Necochea (Szidat, 1961;Alarcos & Timi, 2012), the northern limit of El Rincón, where some systematic studies have also been carried out on parasitic copepods and cestodes (Menoret & Ivanov, 2009;Alarcos & Timi, 2011), but there is no information on parasites of this species in northern regions, apart from a recent taxonomic study on trypanorhynch cestodes in paralichthyids from Rio de Janeiro, Brazil (Gonçalves da Fonseca et al, 2012).…”

Trypanorhynch cestodes parasitizing Mugil liza (Mugiliformes: Mugilidae) commercialized in the state of Rio de Janeiro, Brazil

“…There has only been one previously unidentified trypanorhynch species reported for Mugil curema Valencienes, 1836, from local markets on Itamacará Island and at Itapissuma, Northeast Brazil (PALM, 1997). Furthermore, these two species have been reported parasitizing Brazilian teleost and elasmobranch marine fishes (FONSECA et al, 2012;FELIZARDO et al, 2018), being now also reported to the Mugilidae family.…”

“…Several recent studies have aimed to elucidate the biology of species of Callitetrarhynchus and Pterobothrium that parasite several species of fish along the Brazilian coast, with publications on taxonomy, parasite ecology, and hygienic-sanitary approaches (CORDEIRO & LUQUE, 2004;SÃO CLEMENTE et al, 2004PEREIRA & BOEGER, 2005;ALVES & LUQUE, 2006;PINTO et al, 2006;LUQUE et al, 2008;DIAS et al, 2009DIAS et al, , 2010DIAS et al, , 2011OLIVEIRA et al, 2009;PORTO et al, 2009;FELIZARDO et al, 2010;FONSECA et al, 2012;KURAIEM et al, 2016;ZUCHINALLI et al, 2016;MENEZES et al, 2018).…”

Immunogenic activity of the fish tapewormPterobothrium heteracanthum(Trypanorhyncha: Pterobothriidae) in BALB/c mice

“…Pterobothriidae trypanorhynchs, specifically Pterobothrium spp., have been described in the mesenteric membrane, visceral serosa and flesh of marine and freshwater fish of Australia, Sri Lanka, India, Indonesia (Campbell & Beveridge, 1996; Moore et al , 2003), Persian Gulf (Haseli et al , 2011), West African coast (Al-Zubaidyl & Mhaisen, 2011), Gulf of Mexico (Overstreet, 1977; Campbell & Beveridge, 1996) and the Atlantic coastline of South America (Fonseca et al , 2012). Considering that Micropogonias furnieri (Desmarest, 1813) is an important commercial fish which inhabits the Atlantic coastline of South America from the Gulf of Mexico to Argentina, this fish species is frequently parasitized by Pterobothrium spp.…”