Uma nova espécie de Kritskyia (Dactylogyridae, Ancyrocephalinae) parasita da bexiga urinária e ureteres de Leporinus lacustris (Characiformes, Anostomidae) do Brasil

Abstract

ABSTRACT. This paper describes a new species of Kritskyia, K. eirasi n. sp., from the urinary bladder and ureters of Leporinus lacustris, "corró", an anostomid fish collected in the Upper Paraná River floodplain, Brazil. The new species was included in this genus because of the infection site, the absence of anchor, bar and 4A hooks and the sinistral vaginal aperture. It differs from the type species, K. moraveci and from the other known species of the genus, mainly by the shape of the copulatory complex. The accessory piece is distally complex, serving as a cirrus guide. The base of male copulatory organ, like in congeneric species, is adorned with a sclerotized fringe; however K. eirasi n. sp. presents an elongate projection of this fringe. It also differs from K. boegeri because of the lacking of sclerotized disk in vaginal aperture; and from K. annakohnae due to the absence of keel-like projection in the body's left margin.

A new species of Kritskyia (Monogenea, Dactylogyridae) parasitic in the urinary bladder of Salminus brasiliensis (Characiformes) from the Pantanal wetlands, Brazil

“…Egg spherical 112 (88-144, n = 4) long, filament not observed. (Kohn 1990, Kritsky et al 1996, Boeger et al 2001, Takemoto et al 2002, Guidelli et al 2003.…”

Community of Monogenea in populations of Cichla monoculus from two tributaries of the Amazon River in the Northern Brazil

“…Monogenea Van Beneden, 1858, which belongs to the Platyhelminthes Gegenbaur, 1859 phylum, is the most diverse group of parasites, with around 835 species described parasitizing fish from South America (Luque et al, 2017). While these are mainly ectoparasites of fish, and are usually found on gills, body surface and nasal cavities, but some species are endoparasites inhabiting the intestine, stomach and urinary bladder of hosts (Bilong-Bilong, et al, 1996; Guidelli et al, 2003a; Boeger & Viana, 2006). They exhibit high host specificity in comparison with other helminths taxa (Boeger & Viana, 2006; Braga et al, 2014).…”