David Cayulla-Quispe1, Aarón Mondragón-Martínez2,3,4, Estrellita Rojas-De-Los-Santos5, Enrique Garcia-Candela6, Jorge Babilonia-Medina7, Rosa Martínez-Rojas1,8. 1. Laboratory of Parasitology of Wildlife and Zoonosis, Department of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima, Código Postal 15081, Peru. 2. Laboratory of Parasitology of Wildlife and Zoonosis, Department of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima, Código Postal 15081, Peru. amondragon@naturalenvironment.pe. 3. Laboratory of Parasitology, Department of Biological Sciences, Universidad Ricardo Palma, Lima, Código Postal 15039, Peru. amondragon@naturalenvironment.pe. 4. Research and Development Department, Natural Environment, Calle Pedro Benvenuto 381, San Miguel, Lima, Peru. amondragon@naturalenvironment.pe. 5. Research and Development Department, Natural Environment, Calle Pedro Benvenuto 381, San Miguel, Lima, Peru. 6. CITEacuícola Ahuashiyacu, Instituto Tecnológico de la Producción (ITP), Carretera a Bello Horizonte Km. 2.3, Banda de Shilcayo - Tarapoto, San Martin, Peru. 7. Programa Para el Uso y Conservación del Agua y sus Recursos (AQUAREC), Instituto de Investigaciones de la Amazonia Peruana (IIAP), Jr. Ica 1662, Puerto Maldonado, Madre de Dios, Peru. 8. Laboratory of Parasitology, Department of Biological Sciences, Universidad Ricardo Palma, Lima, Código Postal 15039, Peru.
Abstract
INTRODUCTION: Members of the genus Mymarothecium Kritsky, Boeger & Jégu, 1996 infect characiform fish in the Amazon River Basin. Although the Peruvian Amazon hosts rich fauna of fish, the taxonomic diversity of parasitic organisms such as Mymarothecium has been few explored. A new species of Mymarothecium in Colossoma macropomum Cuvier, from the southeast of the Peruvian Amazon, is described. METHODS: Monogeneans were isolated from gills of C. macropomum, fixed in formaldehyde in 4% solution. For morphological examinations were stained with Gomori's trichrome and others were clarified with Hoyer's medium. RESULTS: Mymarothecium is the third species of the genus recorded in C. macropomum. These new species have been characterized by a slightly sigmoid male copulatory organ (MCO) and the accessory piece with sinuous distal rod with hook-shaped process and a bifurcation in the middle part. Furthermore, the anteromedial projection of the ventral rod has a small conspicuous filament in both anchors. CONCLUSIONS: With the description of this new species, eight species of Mymarothecium have been reported in fish of the Serrasalmidae family originating in the Amazon.
INTRODUCTION: Members of the genus Mymarothecium Kritsky, Boeger & Jégu, 1996 infect characiform fish in the Amazon River Basin. Although the Peruvian Amazon hosts rich fauna of fish, the taxonomic diversity of parasitic organisms such as Mymarothecium has been few explored. A new species of Mymarothecium in Colossoma macropomum Cuvier, from the southeast of the Peruvian Amazon, is described. METHODS: Monogeneans were isolated from gills of C. macropomum, fixed in formaldehyde in 4% solution. For morphological examinations were stained with Gomori's trichrome and others were clarified with Hoyer's medium. RESULTS: Mymarothecium is the third species of the genus recorded in C. macropomum. These new species have been characterized by a slightly sigmoid male copulatory organ (MCO) and the accessory piece with sinuous distal rod with hook-shaped process and a bifurcation in the middle part. Furthermore, the anteromedial projection of the ventral rod has a small conspicuous filament in both anchors. CONCLUSIONS: With the description of this new species, eight species of Mymarothecium have been reported in fish of the Serrasalmidae family originating in the Amazon.
Entities:
Keywords:
Colossoma macropomum; Dactylogiridae; Monogeneans; Mymarothecium; Peru