Folia Parasitologica 71:012 (2024) | DOI: 10.14411/fp.2024.012

Helminths collected from some freshwater fishes and amphibians in Ecuador and Venezuela

Franti¹ek Moravec ORCID...1, Antonín Prouza2
1 Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Èeské Budìjovice, Czech Republic;
2 State Veterinary Institute, Èeské Budìjovice, Czech Republic

The present paper comprises a systematic survey of helminths (trematodes, an acanthocephalan and nematodes) found in nine species of freshwater fishes in Ecuador collected in March 1999 and those (a trematode and acanthocephalans) collected from an amphibian and two species of freshwater fishes in Venezuela in 1992, 1996 and 2001. The following 17 helminth species were recorded: Trematoda: Prosthenhystera ornamentosa sp. n., P. obesa (Diesing, 1850), Crassicutis intermedius (Szidat, 1954), C. cichlasomae Manter, 1936 and Glypthelmins eleutherodactyli sp. n. Acanthocephala: Quadrigyrus torquatus Van Cleave, 1920, Gracilisentis variabilis (Diesing, 1851) and Neoechinorhynchus (Neoechinorhynchus) ecuadoris sp. n. Nematoda: Cosmoxynema vianai Travassos, 1949, Travnema travnema Pereira, 1938, Touzeta ecuadoris Petter, 1987, Sprentascaris hypostomi Petter et Cassone, 1984, Sprentascaris sp., Contracaecum sp. Type 1 larvae, Contracaecum sp. Type 2 larvae, Procamallanus (Procamallanus) peraccuratus Pinto, Noronha et Rolas, 1976 and Procamallanus (Spirocamallanus) sp. juv. Nearly all of these parasites are reported from Ecuador or Venezuela for the first time and many of these findings represent new host records. The new species P. ornamentosa sp. n. was collected from the gall-bladder of an unidentified anostomid (Anostomidae, Characiformes) in Ecuador, G. eleutherodactyli sp. n. from the digestive tract of the frog Eleutherodactylus sp. (Eleutherodactylidae, Anura) in Venezuela and N. (N.) ecuadoris sp. n. from the intestine of Lebiasina sp. (Lebiasinidae, Characiformes) in Ecuador. Most parasites are briefly described and illustrated and problems concerning their morphology, taxonomy, hosts and geographical distribution are discussed.

Keywords: helminth parasites, Trematoda, Acanthocephala, Nematoda, taxonomy, Pisces, Anura, Neotropical Region

Received: March 28, 2024; Revised: May 27, 2024; Accepted: May 28, 2024; Published online: July 18, 2024  Show citation

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Moravec, F., & Prouza, A. (2024). Helminths collected from some freshwater fishes and amphibians in Ecuador and Venezuela. Folia Parasitologica, 71, Article 2024.012. https://doi.org/10.14411/fp.2024.012
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