Neotropical Monogenoidea. 3. Five new species from South America with the proposal of Tereancistrum gen. n. and Trinibaculum gen. n. (Dactylogyridae: Ancyrocephalinae)

Abstract

Five new species of Monogenoidea (Dactylogyridae: Ancyrocephalinae) are described from the gills of freshwater fishes of South America: Jainus amazonensis sp. n., Tereancistrum kerri gen. et sp. n., and Trlnibaculum braziliensis gen. et sp. n. (all) from Brycon melanopterus (Cope), Januacá Lake near Manaus, Amazonas, Brasil; Tereancistrum ornatus sp. n. from Prochilodus reticulatus Steindachner, Rio Cauca, Juanchito, Cali, Valle, Colombia; and T. parvus sp. n. from Leporinus fasciatus (Bloch), Amazon River Basin. Two new genera are proposed. Tereancistrum gen. n. is characterized by having spathulate acessory anchor sclerites associated with the ventral anchors. Trinibaculum gen. n. is proposed for species with a single ventral bar, two widely separated dorsal bars, a dextroventral vagina, confluent intestinal crura, and intercecal gonads.

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil

“…Nine species were common in both systems (Table 2) Martins & Yoshitoshi, 2003. Two species of Monogenoidea were found only in the earth tanks (Tereancistrum paranaensis Karling, Lopes, Takemoto & Pavanelli, 2014 and Kritskyia eirasi Kritsky, Thatcher & Kayton, 1980), and four species occurred only in the dams (Dactylogyridae sp. 3; Microcotyle sp.…”

“…had not been already described as parasitizing other members of the Anostomidae (Kritsky et al 1980;Kritsky et al 1986;Guidelli et al 2003;Schalch and Moraes 2005;Guidelli et al 2006;Takemoto et al 2009;Takemoto and Lizama 2010;Abdallah et al 2012). Some ectoparasite species that presented higher prevalence and abundance may have specificity to members of Anostomidae, such as U. paradoxus and T. parvus (Cohen et al 2013).…”

Fauna parasitológica de Alevinos de Matrinchã Brycon cephalus (Günther, 1869) coletados nos Rios Negro e Solimões, na Amazônia central

“…Lâminas permanentes foram feitas utilizando-se solução de Malmberg (Malmberg, 1970). A identificação dos monogenóideos foi baseada nos trabalhos de Kritsky et al (1980) e Thatcher (1991. Holótipos e parátipos depositados na Coleção de Invertebrados do INPA foram utilizados para auxiliar na identificação.…”

A new species of Diaphorocleidus (Monogenea: Ancyrocephalinae) from the gills of Argonectes robertsi (Characiformes) and new records of dactylogyrids parasitic on fishes from the Xingu River, Amazon Basin, Brazil

“…In addition to the new species described above, another seven species of gill monogeneans of the family Dactylogyridae were found on four species of fishes during parasitological surveys carried out in the Xingu River. All fishes represent new hosts of these monogeneans and except for Jainus amazonensis Kritsky, Thatcher & Kayton, 1980, all parasites are reported from the Xingu River, Amazon basin, for the first time (Table 1).…”