To date, the monospecific Dendrorchis is represented by D. neivai, reported from Brazil and parasitizing Brycon lundi. Dendrorchis retrobiloba n. sp. is described from the swim bladder of Astyanax fasciatus from Cañada del Dragón stream in Montevideo, southern Uruguay (34°47′S, 56°14′W), and the emended diagnosis of Dendrorchis is given. The diagnosis of Dendrorchis has been modified to include the following characters: Phyllodistominae with flattened body, wider in the region posterior to acetabulum. Intestinal ceca sinuous or not. Testes branched or with superficial lobes. Ovary with deep or superficial lobes. Seminal receptacle present or absent. Vitellaria ellongate or pyriform. Uterus extends to posterior region and to portion of body anterior to acetabulum. Eggs oval, variable size, thin-shelled, without opercula. Dendrorchis retrobiloba n. sp. differs from D. neivai by having pyriform vitellaria, ovary larger than the testes and not deeply lobed, wider distribution of the uterus, smaller egg size, testes with superficial lobes, oral sucker wider than the acetabulum, shorter esophagus, 2 terminal lobes at the posterior end of the body, and much smaller body length. Despite being found in different hosts, both species of Dendrorchis parasitize the swim bladder of freshwater Characidae.
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October 2005
SYSTEMATICS-PHYLOGENETICS|
October 01 2005
DESCRIPTION OF DENDRORCHIS RETROBILOBA N. SP. (DIGENEA: GORGODERIDAE) FROM ASTYANAX FASCIATUS (TELEOSTEI: CHARACIDAE) FROM SOUTHERN URUGUAY, WITH AN EMENDED DIAGNOSIS OF THE GENUS DENDRORCHIS
Odile Volonterio;
Odile Volonterio
Laboratorio de Zoología de Invertebrados, Facultad de Ciencias (Piso 8 Sur), Iguá 4225, Montevideo 11400, Uruguay. [email protected]
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Rodrigo Ponce de León
Rodrigo Ponce de León
Laboratorio de Zoología de Invertebrados, Facultad de Ciencias (Piso 8 Sur), Iguá 4225, Montevideo 11400, Uruguay. [email protected]
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J Parasitol (2005) 91 (5): 1204–1207.
Citation
Odile Volonterio, Rodrigo Ponce de León; DESCRIPTION OF DENDRORCHIS RETROBILOBA N. SP. (DIGENEA: GORGODERIDAE) FROM ASTYANAX FASCIATUS (TELEOSTEI: CHARACIDAE) FROM SOUTHERN URUGUAY, WITH AN EMENDED DIAGNOSIS OF THE GENUS DENDRORCHIS. J Parasitol 1 October 2005; 91 (5): 1204–1207. doi: https://doi.org/10.1645/GE-3465.1
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