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      Choledocystus elegans (Digenea: Plagiorchiidae) of Leptodactylus paraensis (Amphibia: Leptodactylidae) from the Brazilian Amazon Translated title: Choledocystus elegans (Digenea: Plagiorchiidae) de Leptodactylus paraensis (Amphibia: Leptodactylidae) da Amazônia brasileira

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          Abstract

          Abstract The trematodes are parasites of the several vertebrates including amphibians, however the knowledge about of the taxonomy these parasites is still confuse. The trematode Choledocystus elegans was found in the small intestine of the Leptodactylus paraensis in eastern Amazon and presents the following characteristics: several pointed tegumentary spines, papillae on the outer and inner edges of the oral and ventral suckers, a round, well-developed cirrus sac, a well-developed cirrus, oblique testicles, a ovary right side, uterine loops extending between the testicles, follicular vitellaria distributed throughout the body, starting at the genital pore region and caeca close the end of the body. For the first time, this study identified C. elegans parasitizing L. paraensis and describes morphological aspects never characterized using light and scanning electron microscopy.

          Translated abstract

          Resumo Os trematodas são parasitas de vários grupos de vertebrados incluindo os anfíbios, contudo o que se conhece sobre a taxonomia destes parasitas ainda é confusa. O trematoda Choledocystus elegans foi encontrado no intestino delgado de Leptodactylus paraensis na Amazônia oriental e apresenta as seguintes características: vários espinhos pontiagudos no tegumento, papilas nas bordas externa e interna das ventosas orais e ventrais, bolsa do cirro bem desenvolvida contendo um cirro desenvolvido, testículos oblíquos, ovário destro, alças uterinas que se estendem entre os testículos, folículos vitelínicos distribuída por toda a lateral do corpo, começando ao nível do poro genital e cecos intestinais chegando até a região posterior do corpo do helminto. Pela primeira vez, este estudo identificou C. elegans parasitando L. paraensis e descreve aspectos morfológicos nunca caracterizados usando microscopia de luz comum e eletrônica de varredura.

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          Variation and taxonomic clarification of the large species of the Leptodactylus pentadactylus species group (Amphibia: Leptodactylidae) from Middle America, Northern South America, and Amazonia

          W. Heyer (2005)
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            Trematódeos do Brasil

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              Rohdella amazonica n. sp. (Aspidogastrea: Aspidogastridae) from the Amazoninan banded puffer fish Colomesus psittacus (Bloch & Schneider, 1801).

              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.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbpv
                Revista Brasileira de Parasitologia Veterinária
                Rev. Bras. Parasitol. Vet.
                Colégio Brasileiro de Parasitologia Veterinária (Jaboticabal, SP, Brazil )
                0103-846X
                1984-2961
                October 2017
                : 26
                : 4
                : 511-515
                Affiliations
                [02] Belém Pará orgnameUniversidade Federal Rural da Amazônia orgdiv1Instituto de Saúde e Produção Animal orgdiv2Laboratório de Histologia e Embriologia Animal Brazil
                [01] Belém Pará orgnameUniversidade Federal do Pará orgdiv1Instituto de Ciências Biológicas orgdiv2Laboratório de Biologia Celular e Helmintologia “Profa. Dra. Reinalda Marisa Lanfredi Brazil
                Article
                S1984-29612017000400511
                10.1590/s1984-29612017049
                ef032cfd-c0c8-4c0a-8f06-6de35d1d8d11

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 04 June 2017
                : 03 August 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 17, Pages: 5
                Product

                SciELO Brazil


                Leptodactylus paraensis,Trematoda,Choledocystus elegans,Amazônia,Trematode,Amazon

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