No abstract

Percophis brasiliensis is a fish species appreciated as a fried appetizer at beachside kiosks of Niterói, state of Rio de Janeiro, Brazil. The constant presence of helminth larvae in the viscera and serosa of individuals of the species has been the subject of complaints among local fish traders because of economic losses due to their repugnant aspect. Considering their hygienic-sanitary importance and significance for collective health, the presence of helminth larvae was investigated in 64 individual fish of P. brasiliensis purchased from Niterói fish markets in 2019. Cestodes, identified as larvae of Grillotia carvajalregorum, were found parasitizing the serosa of the stomach, mesentery and abdominal cavity. Nematodes, identified as third-instar larvae of Contracaecum sp., Terranova sp., Hysterothylacium deardorffoverstreetorum, H. fortalezae and Raphidascaris sp., were found parasitizing the stomach, intestine, liver, gonads, stomach serosa, mesentery and abdominal cavity. The highest parasitic indices were for G. carvajalregorum and H. deardorffoverstreetorum, with prevalences of 100% and 81.25%, mean intensities of 8.05 and 8.13, mean abundances of 8.05 and 6.61 and infection ranges of 1-131 and 1-42 specimens per host, respectively. Considerations about the zoonotic potential and hygienic-sanitary significance of these parasites are presented in order to increase food safety for consumers.

) were parasitized by live larvae of Anisakidae. The collected species were represented by Anisakis physeteris, Anisakis simplex, Anisakis sp., Pseudoterranova decipiens, Pseudoterranova sp., Hysterothylacium sp., Raphidascaris sp., Contracaecum sp. and Terranova sp. The species Anisakis sp. and A. simplex presented the higher prevalences, both with 13,5% whereas A. physeteris presented the lower prevalence 1,35%. The other species, Pseudoterranova sp., P. decipiens, Hysterothylacium sp., Raphidascaris sp., Contracaecum sp. and Terranova sp. presented prevalences of 10,8%, 5,4%, 2,7%, 4,1%, 1,4% and 1,4%, respectively. The sites of infection were, the mesentery, stomach and intestinal seroses, intestine, ovary and musculature.]]>

Flounders are commercially and economically important fish. A total of 120 specimens of flounders (60 Paralichthys isosceles, 30 Paralichthys patagonicus and 30 Xystreurys rasile) were collected off the coast of the state of Rio de Janeiro, Brazil. The fish were measured, necropsied and filleted, and then had their organs investigated for acanthocephalans. Taxonomic identification of the parasites was based on morphological, morphometric and genetic characters. Paralichthys isosceles and P. patagonicus were parasitized by juveniles of Serrasentis sagittifer, Bolbosoma turbinella, Corynosoma australe and C. cetaceum; Xystreurys rasile was parasitized by C. australe. Genetic characterization confirmed the identification of specimens of Bolbosoma turbinella and Corynosoma australe, as demonstrated by phylogenetic analyses using both ITS and cox1 molecular targets. Parasite indices of prevalence, intensity, mean intensity, abundance, mean abundance, and range of infection, as well as infection site, were evaluated for each parasite species. This is the first report of S. sagittifer parasitizing P. isosceles and P. patagonicus, and B. turbinella parasitizing P. patagonicus.