Pseudoplatystoma punctifer is a catfish species that occupies the first place in the statistics of fishing landings in the region of Loreto, being of economic importance in the Peruvian Amazonia. As an initiative to know the parasites present in the gills of P. punctifer from the Peruvian Amazon, a study was carried out with fish collected in the Belén Market, in Loreto-Peru. Specimens were provided between June and October 2018 from local fishermen from the Belén Market, in Loreto-Peru and samples were processed and analyzed in the “Laboratorio de Parasitología y Sanidad Acuícola” from the “Instituto de Investigaciones de la Amazonía Peruana” (IIAP) in Iquitos, Loreto-Peru. The analyzes of the gills revealed the presence of two new species of Monogenoidea: Demidospermus aureagarciae n. sp. and D. doncellae n. sp. These species are unique among congeners by the morphology of the copulatory complex and the vagina. Demidospermus aureagarciae n. sp presents a male copulatory organ as a coiled tube, with a complete counterclockwise ring, with dilated base with a developed sclerotized margin, from which a flap projects; a concave accessory piece, with a tapered and curved distal part and a saculiform vaginal vestibule, connected to the vaginal canal. Demidospermus doncellae n. sp. presents a copulatory complex that is an elongated coiled tube, with approximately three counterclockwise rings, with dilated base with a developed sclerotized margin, from which a flap projects; an accessory piece sheath like, and a sclerotized vagina with dextral position, with saclike vaginal vestibule, connected to an elongated canal.
El presente trabajo tuvo como finalidad la identificación de parásitos zoonóticos en la musculatura y cavidad visceral de Hoplias malabaricus “fasaco” provenientes del mercado Belén en Iquitos, Perú. Se revisó la cavidad visceral realizando un corte longitudinal desde la abertura del ano hasta la altura de las branquias y se realizaron cortes finos en la musculatura de los peces para detectar parásitos enquistados o libres. Los nematodos se clarificaron utilizando ácido láctico, en los pentastómidos se utilizó el medio Hoyer y los trematodos se tiñeron con carmín alcohólico de Langeron. Se observó la presencia de endoparásitos zoonóticos: larvas L3 del nematodo Eustrongylides sp Jagerskiold, 1909 (Dioctophymatidae), el trematodo Ithyoclinostomum dimorphum Witenberg, 1925 (Clinostomidae) y el pentastómido Sebekia sp.
Trichopodus trichopterus (Pallas, 1770) es una especie nativa del sudeste asiático que se introdujo en el Perú como un controlador biológico de los vectores de la malaria y para la ornamentación. Teniendo en cuenta que las especies hospedadoras exóticas pueden co-introducir sus parásitos en ambientes naturales, el presente estudio tiene como objetivo identificar los monogenoideos que parasitan las branquias del gourami de los tres puntos, dando una descripción morfológica de sus especies de parásitos y sus índices parasitológicos. Treinta especímenes de T. trichopterus fueron capturados en julio de 2018 de un estanque natural en Iquitos, Perú. Las muestras se sacrificaron y luego se analizaron en el Laboratorio de Parasitología y Sanidad Acuícola del Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú. Se encontró al monogenoideo Trianchoratus acleithrium Priece & Berry, 1966, parasitando las branquias del gourami de los tres puntos T. trichopterus con una prevalencia del 30%, 26 parásitos recolectados, con una intensidad que osciló entre 1 y 12, con una intensidad media de 2.89 parásitos por huésped infectado y una abundancia media de 0,87 por huésped.
Among Siluriformes, fishes of the family Doradidae harbor dactylogyrids from Cosmetocleithrum Kritsky, Thatcher and Boeger, 1986. Anadoras grypus (Cope, 1872) (Siluriformes, Doradidae) locally named in Peru as “rego-rego” hosts a new species of Cosmetocleithrum described herein as Cosmetocleithrum infinitus sp. n. The male copulatory organ (MCO) and vagina of the new species reveals its morphological uniqueness among members of Cosmetocleithrum. The MCO in the new species is an elongate, sclerotized sinuous tube, with numerous and uncountable coils with counterclockwise orientation; the accessory piece is sclerotized, comprising a kind of cone, with a large opening at its base, with a branch in the posterior middle part and with pointed ends. The vagina is a sclerotized long, winding, coiled tube with a cone-shaped opening.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.