Systematic Parasitology

, Volume 96, Issue 4–5, pp 399–406 | Cite as

Monogeneans of the catfish Pimelodus blochii Valenciennes (Siluriformes: Pimelodidae) from the Brazilian Amazon, with a description of a new species of Ameloblastella Kritsky, Mendoza-Franco & Scholz, 2000 (Monogenea: Dactylogyridae)

  • Luciano P. Negreiros
  • Marcos Tavares-Dias
  • Felipe B. PereiraEmail author


Ameloblastella amazonica n. sp. (Monogenea: Dactylogyridae) collected on the gills of Pimelodus blochii Valenciennes (Siluriformes: Pimelodidae) from Rivers Acre and Iaco, State of Acre (Brazil) is described. The new species differs from the congeners mainly by the morphology of the dorsal bar, i.e. slightly U-shaped bearing a posteriorly directed flap, arising from the anterior edge of its middle third. The most morphologically similar congeners, A. paranaensis (França, Isaac, Pavanelli & Takemoto, 2003) and A. satoi Monteiro, Kritsky & Brasil-Sato, 2010, resemble A. amazonica n. sp. regarding the general structure of the copulatory complex; however, besides other features, they also differ from the new species because their hooks are similar in size (vs hooks with three different sizes). In addition to the dorsal bar lacking a flap, A. amazonica n. sp. can be differentiated from all congeners based on the combination of the following features: size of hooks (one or two different sizes), shape of the dorsal bar (other than slightly U-shaped), anchor points largely passing the level of superficial root (vs not or slightly passing it), number of MCO rings (other than 3–4) and structure of the articulation between the MCO base and the accessory piece (other than thick, medium-sized, smooth and tubular). Demidospermus leptosynophallus Kritsky & Gutierrez, 1998 and Scleroductus yuncensi Jara & Cone, 1989 were also found infesting P. blochii, both representing new host and locality records.



The authors would like to thank Drs Marcelo Knoff and Daniela A. Lopes, Coleção Helmintológica do Instituto Oswaldo Cruz (CHIOC), for the loan of specimens and André Mota for preparing the line drawings. Thanks are also due to Dr Marcus Vinícius Domingues, Universidade Federal do Pará (Brazil), for the critical comments regarding some aspects of the study.


This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES)-Finance code 001. FBP was supported by a Post-doctoral fellowship PNPD-CAPES (Programa Nacional de Pós-Doutorado-Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-CAPES, Brazil). Marcos Tavares-Dias was granted (# 303013/2015-0) a Research Fellowship from the National Council for Scientific and Technological Development (CNPq, Brazil).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures involving animals were permitted and were strictly according to the rules of the Sistema de Autorização e Informação em Biodiversidade (acronym SISBIO, No. 60899–1) and the Committee on Ethics of Animal Experiments of the Embrapa Amapá (Protocol No. 002- CEUA-CPAFAP).

Supplementary material

11230_2019_9862_MOESM1_ESM.pdf (259 kb)
Supplementary material 1 (PDF 259 kb)
11230_2019_9862_MOESM2_ESM.pdf (244 kb)
Supplementary material 2 (PDF 243 kb)


  1. Acosta, A. A., Scholz, T., Blasco-Costa, I., Alves, P. V., & Silva, R. J. (2017). A new genus and two new species of dactylogyrid monogeneans from gills of Neotropical catfishes (Siluriformes: Doradidae and Loricariidae). Parasitology International, 67, 4–12.CrossRefGoogle Scholar
  2. Aguiar, J. C., Maia, A. A. M., Silva, M. R. M., Ceccarelli, P. S., Domingues, M. V., & Adriano, E. A. (2017). An integrative taxonomic study of Pavanelliella spp. (Monogenoidea, Dactylogyridae) with the description of a new species from the nasal cavities of an Amazon pimelodid catfish. Parasitology International, 66, 777–788.CrossRefGoogle Scholar
  3. Azevedo, R. K., Abdallah, V. D., José, L., & Luque, J. L. (2010). Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platyhelminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List, 6, 659–667.CrossRefGoogle Scholar
  4. Boeger, W. A., & Vianna, R. T. (2006). Monogenoidea. In: Thatcher, V. E. (Ed.), Amazon fish parasites. Sofia: Pensoft Publishers, pp. 42–116.Google Scholar
  5. Braga, M. P., Razzolini, E., & Boeger, W. (2015). Drivers of parasite sharing among Neotropical freshwater fishes. Journal of Animal Ecology, 84, 487–497.CrossRefGoogle Scholar
  6. Cohen, S. C., & Kohn, A. (2008). New data on species of Demidospermus (Dactylogyridae: Monogenea) parasitizing fishes from the reservoir Itaipu hydroelectric power station, Parana State, Brazil, with new synonymies. Brazilian Journal of Veterinary Parasitology, 17, 167–170.Google Scholar
  7. Cohen, S. C., Kohn, A., & Justos, M. C. N. (2013). South American monogenoidea parasites of fishes, amphibians and reptiles. Rio de Janeiro: Oficina de Livros, 659 pp.Google Scholar
  8. França, J. G., Isaac, A., Pavanelli, G. C., & Takemoto, R. M. (2003). Dactylogyridae (Monogenea) from the gills of Iheringichthys labrosus (Osteichthyes: Pimelodidae) from the upper Paraná River floodplain, Brazil, with the proposal of Pseudovancleaveus n. g. Systematic Parasitology, 54, 25–31.CrossRefGoogle Scholar
  9. Franceschini, L., Zago, A. C., Mülle, M. I., Francisco, C. J., Takemoto, R. M., & Silva, R. J. (2018). Morphology and molecular characterization of Demidospermus spirophallus n. sp., D. prolixus n. sp. (Monogenea: Dactylogyridae) and a redescription of D. anus in siluriform catfish from Brazil. Journal of Helminthology, 91, 1–16.Google Scholar
  10. Froese R., & Pauly, D. (Eds) (2019). FishBase. World Wide Web electronic publication., version 02/2019.
  11. Gutiérrez, P. A., & Martorelli, S. R. (1999a). The structure of the monogenean community on the gills of Pimelodus maculatus from Río de la Plata (Argentina). Parasitology, 119, 177–182.CrossRefGoogle Scholar
  12. Gutiérrez, P. A., & Martorelli, S. R. (1999b). Niche preferences and spatial distribution of Monogenea on the gills of Pimelodus maculatus in Río de la Plata (Argentina). Parasitology, 119, 183–188.CrossRefGoogle Scholar
  13. Hechinger, R. F., & Lafferty, K. D. (2005). Host biodiversity begets parasite biodiversity: Bird final hosts and trematodes in snail intermediate hosts. Proceedings of the Royal Societey B, 272(1567), 1059–1066.CrossRefGoogle Scholar
  14. Jara, C. A., & Cone, D. K. (1989). Scleroductus yuncensi gen. et sp. n. (Monogenea) from Pimelodella yuncensi (Siluriformes: Pimelodidae) in Peru. Proceedings of Helminthological Society of Washington, 56, 125–127.Google Scholar
  15. Kritsky, D. C., Boeger, W. A., Mendoza-Franco, E. F., & Vianna, R. T. (2013). Neotropical Monogenoidea. 57. Revision and phylogenetic position of Scleroductus Jara & Cone, 1989 (Gyrodactylidae), with descriptions of new species from the Guatemalan chulin Rhamdia guatemalensis (Günther) (Siluriformes: Heptapteridae) in Mexico and the barred sorubim Pseudoplatystoma fasciatum (Linnaeus) (Siluriformes: Pimelodidae) in Brazil. Systematic Parasitology, 84, 1–15.CrossRefGoogle Scholar
  16. Kritsky, D. C., & Gutiérrez, P. A. (1998). Neotropical Monogenoidea. 34. Species of Demidospermus (Dactylogyridae, Ancyrocephalinae) from the gills of pimelodids (Teleostei, Siluriformes) in Argentina. Proceedings of the Helminthological Society Washington, 65, 129–134.Google Scholar
  17. Kritsky, D. C., Mendoza-Franco, E. F., & Scholz, T. (2000). Neotropical Monogenoidea. 36. Dactylogyrids from the gills of Rhamdia guatemalensis (Siluriformes: Pimelodidae) from cenotes of the Yucatan Peninsula, Mexico with proposal of Ameloblastella gen. n. and Aphanoblastella gen. n. (Dactylogyridae, Ancyrocephalinae). Comparative Parasitology, 67, 76–84.Google Scholar
  18. Kritsky, D. C., & Thatcher, V. E. (1976). New monogenetic trematodes from freshwater fishes of western Colombia with the proposal of Anacanthoroides gen. n. (Dactylogyridae). Proceedings of the Helminthological Society of Washington, 43, 129–134.Google Scholar
  19. Kritsky, D. C., Thatcher, V. E., & Boeger, W. A. (1985). Neotropical Monogenea. 8. Revision of Urocleidoides (Dactylogyridae, Ancyrocephalinae). Proceedings of the Helminthological Society Washington, 53, 1–37.Google Scholar
  20. Mendoza-Franco, E. F., Mendoza-Palmero, C. A., & Scholz, T. (2016). New species of Ameloblastella Kritsky, Mendoza-Franco & Scholz, 2000 and Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (Monogenea: Dactylogyridae) infecting the gills of catfishes (Siluriformes) from the Peruvian Amazonia. Systematic Parasitology, 93, 847–862.CrossRefGoogle Scholar
  21. Mendoza-Franco, E. F., & Scholz, T. (2009). New dactylogyrids (Monogenea) parasitizing the gills of catfishes (Siluriformes) from the Amazon River basin in Peru. Journal of Parasitology, 95, 865–870.CrossRefGoogle Scholar
  22. Mendoza-Palmero, C. A., Blasco-Costa, I., & Scholz, T. (2015). Molecular phylogeny of Neotropical monogeneans (Platyhelminthes: Monogenea) from catfishes (Siluriformes). Parasites & Vectors, 8, 164.CrossRefGoogle Scholar
  23. Mizelle, J. D., & Price, C. E. (1963). Additional haptoral hooks in the genus Dactylogyrus. Journal of Parasitology, 49, 1028–1029.CrossRefGoogle Scholar
  24. Monteiro, C. M., Kritsky, D. C., & Brasil-Sato, M. C. (2010). Neotropical Monogenoidea. 55. Dactylogyrids parasitizing the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio Sao Francisco. Brazil. Systematic Parasitology, 76, 179–190.CrossRefGoogle Scholar
  25. Nelson, J. S., Grande, T. C., & Wilson, M. V. H. (2016). Fishes of the world. 5th ed. Hoboken: John Wiley & Sons, 752 pp.CrossRefGoogle Scholar
  26. Padial, J. S., Miralles, A., De La Riva, I., & Vences, M. (2010). The integrative future of taxonomy. Frontiers in Zoology, 7, 2–14.CrossRefGoogle Scholar
  27. Poulin, R. (2014). Parasite biodiversity revisited. International Journal for Parasitology, 44, 581–589.CrossRefGoogle Scholar
  28. Suriano, D. M., & Incorvaia, I. S. (1995). Ancyrocephalid (Monogenea) parasites from siluriform fishes from Paranean-Platean ichthyogeographical province in Argentina. Acta Parasitologica, 40, 113–124.Google Scholar
  29. Takemoto, R. M., Pavanelli, G. C., Lizama, M. A. P., Lacerda, A. C. F., Yamada, F. H., Moreira, L. H. A., et al. (2009). Diversity of parasites of fish from the Upper Paraná River floodplain, Brazil. Brazilian Journal of Biology, 69, 691–705.CrossRefGoogle Scholar
  30. Vergara, J., Azpelicuete, M. M., & Garcia, G. (2008). Phylogeography of the Neotropical catfish Pimelodus albicans (Siluriformes: Pimelodidae) from río de la Plata basin, South America, and conservation remarks. Neotropical Ichthyology, 6, 75–85.CrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Programa de Pós-Graduação em Biodiversidade e Biotecnologia (PPG-BIONORTE)Universidade Federal do Amapá Campus UniversitárioMacapáBrazil
  2. 2.Embrapa AmapáMacapáBrazil
  3. 3.Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências (INBIO)Universidade Federal de Mato Grosso do Sul (UFMS)Campo GrandeBrazil

Personalised recommendations