title: Rohdella amazonica n. sp. (Aspidogastrea: Aspidogastridae) from the Amazoninan banded puffer fish Colomesus psittacus (Bloch & Schneider, 1801).
abstract: Aspidogastreans are commonly found infecting freshwater and marine molluscs, teleosts fishes and freshwater turtles. The subclass comprises four families - Rugogastridae Schell 1973, Stichocotylidae Faust & Tang 1936, Multicalycidae Gibson & Chinabut 1984 and Aspidogastridae Poche 1907 - and it is characterized by the presence of a ventral adhesive disc divided into rows of alveoli. In the current work, using light and scanning electron microscopy and molecular approaches, a new species of Aspidogastridae of the genus Rohdella Gibson & Chinabut, 1984, is described as a parasite of Colomesus psittacus in Brazil. The new taxon is distinguishable by the presence of oesophageal glands, teguments covered by ciliated papillae, and the position and shape of the hermaphroditic duct. The present work describes the third species of the genus Rohdella, thereby adding new morphological and molecular data regarding Aspidogastridae.
authors.affiliation: Laboratório de Histologia e Embriologia Animal, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia, Av.Perimetral 2501, Montese, Belém,Pará66077-901,Brazil.
authors.forename: E G
authors.initials: EG
authors.lastname: Giese
authors.affiliation: Laboratório de Pesquisa Carlos Azevedo, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia, Av.Perimetral 2501, Montese, Belém,Pará66077-901,Brazil.
authors.forename: M V O
authors.initials: MV
authors.lastname: Silva
authors.affiliation: Laboratório de Pesquisa Carlos Azevedo, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia, Av.Perimetral 2501, Montese, Belém,Pará66077-901,Brazil.
authors.forename: M N
authors.initials: MN
authors.lastname: Videira
authors.affiliation: Laboratório de Biologia Celular e Helmintologia 'Profa. Dra. Reinalda Marisa Lanfredi', Universidade Federal do Pará, Instituto de Ciências Biológicas,Rua Augusto Corrêa 01, Guamá, Belém,Pará66075-110,Brazil.
authors.forename: A P
authors.initials: AP
authors.lastname: Furtado
authors.affiliation: Laboratório de Pesquisa Carlos Azevedo, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia, Av.Perimetral 2501, Montese, Belém,Pará66077-901,Brazil.
authors.forename: E R
authors.initials: ER
authors.lastname: Matos
authors.affiliation: Laboratório de Tecnologia Biomolecular, Instituto de Ciências Biológicas, Universidade Federal do Pará Instituto de Ciências Biológicas,Rua Augusto Corrêa 01, Guamá, Belém,Pará66075-110,Brazil.
authors.forename: E C
authors.initials: EC
authors.lastname: Gonçalves
authors.affiliation: Laboratório de Biologia Celular e Helmintologia 'Profa. Dra. Reinalda Marisa Lanfredi', Universidade Federal do Pará, Instituto de Ciências Biológicas,Rua Augusto Corrêa 01, Guamá, Belém,Pará66075-110,Brazil.
authors.forename: F T V
authors.initials: FT
authors.lastname: Melo
authors.affiliation: Laboratório de Biologia Celular e Helmintologia 'Profa. Dra. Reinalda Marisa Lanfredi', Universidade Federal do Pará, Instituto de Ciências Biológicas,Rua Augusto Corrêa 01, Guamá, Belém,Pará66075-110,Brazil.
authors.forename: J N
authors.initials: JN
authors.lastname: Santos
mesh_terms: D000825:Animal Structures / Q000033:anatomy & histology; D000818:Animals; D001938:Brazil; D018509:DNA, Helminth / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D005393:Fish Diseases / Q000469:parasitology*; D008853:Microscopy; D008969:Molecular Sequence Data; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA; D023721:Tetraodontiformes / Q000469:parasitology*; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification*; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*
chemical_list: D018509:DNA, Helminth; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer; D012337:RNA, Ribosomal, 18S