Qualitative and quantitative study of parasites of Pimelodus maculatus and Rhamdia quelen from the Jacaré-Pepira River, state of São Paulo, Brazil

NEGRELLI, DÉBORA C.; IANNACONE, JOSÉ; ABDALLAH, VANESSA D.; AZEVEDO, RODNEY K. DE

doi:10.1590/0001-3765202120190571

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ECOSYSTEMS • An. Acad. Bras. Ciênc. 93 (2) • 2021 • https://doi.org/10.1590/0001-3765202120190571 copy

Qualitative and quantitative study of parasites of Pimelodus maculatus and Rhamdia quelen from the Jacaré-Pepira River, state of São Paulo, Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

In the freshwater ecosystems of Brazil can be found high biodiversity of fish, about 5160 species. However, the Jacaré-Pepira River, located in the state of São Paulo, Brazil, presents a diversity of fish still to be explored in ichthyological studies. Metazoan parasites of Pimelodus maculatus and Rhamdia quelen were qualitatively and quantitatively diagnosed. Ten species of parasites (Demidospermus sp., D. majusculus, D. bidiverticulatum, D. paravalenciennesi, Ameloblastella paranaensis, Scleroductus sp., Riggia sp., Austrodiplostomum compactum, Helobdella sp. and Neochinorhynchus pimelodi) were collected in P. maculatus and eight species of parasites (Aphanoblastella robustus, A. mastigatus, Phyllodistomum rhamdiae, Crocodilicola pseudostoma, Henneguya jundiai, Contracaecum sp., Rhabdochona sp. and Capillariidae gen. sp.) were collected in R. quelen. All parasites presented aggregate distribution. A significant correlation was observed in P. maculatus concerning the weight with the prevalence of ectoparasite D. majusculus; however, R. quelen showed a relation to the length and weight with the abundance of ectoparasite A. mastigatus and endoparasites. The parasitic community of P. maculatus and R. quelen was characterized by high diversity, high richness, and low uniformity.

Key words
biodiversity; ecology; fish; freshwater; Siluriformes

		PF	PC	P (%)	FD (%)	MI	MA	II
Monogenea	*Demidospermus majusculus*	6	95	18.75	6.25	15.83 ^± 1.24	2.97 ^± 0.23	Gills and surface
	*Demidospermus bidiverticulatum*	7	55	21.88	3.13	7.86 ^± 0.47	1.72 ^± 0.10	Gills and surface
	Demidospermus sp.	6	56	18.75	3.13	9.33 ^± 0.65	1.75 ^± 0.12	Gills and surface
	*Demidospermus paravalenciennesi*	1	8	3.13	0	8.00	0.25 ^± 0.04	Gills and surface
	*Ameloblastella paranaensis*	4	71	12.50	3.13	17.75 ^± 1.88	2.22 ^± 0.23	Gills and surface
	Scleroductus sp.	25	1182	78.13	75.00	47.28 ^± 1.54	36.94 ^± 1.20	Gills and surface
Acanthocephala	*Neochinorhynchus pimelodi*	21	165	65.63	9.38	7.86 ^± 0.42	5.16 ^± 0.28	Intestine and stomach
Digenea	*Austrodiplostomum compactum*	4	7	12.50	0	1.75 ^± 0.16	0.22 ^± 0.02	Eyes
Hirudinea	Helobdella sp .	7	156	21.88	6.25	22.29 ^± 2.89	4.88 ^± 0.63	Surface, gills and mouth
Isopoda	Riggia sp.	1	1	3.13	0	1.00	0.03 ^± 0.01	Surface

		PF	PC	P (%)	FD (%)	MI	MA	II
Monogenea	*Aphanoblastella robustus*	5	119	16.67	16.67	23.80 ^± 3.54	3.97 ^± 0.59	Gills and surface
	*Aphanoblastella mastigatus*	4	87	13.33	6.67	21.75 ^± 2.39	2.90 ^± 0.32	Gills and surface
Digenea	*Crocodilicola pseudostoma*	1	68	3.33	3.33	68.00	2.27 ^± 0.41	Liver, swim bladder, cavity, intestine and stomach
	*Phyllodistomum rhamdiae*	1	1	3.33	3.33	1.00	0.03 ^± 0.01	Liver
Myxosporea	*Henneguya jundiai*	3	-	10.00	-	-	-	Gill arches
Nematoda	Contracaecum sp.	1	8	3.33	0.00	8.00	0.27 ^± 0.05	Cavity and intestine
	Capillariidae gen. sp.	1	1	3.33	0.00	1.00	0.03 ^± 0.01	Cavity
	Rhabdochona sp.	1	1	3.33	0.00	1.00	0.03 ^± 0.01	Cavity

		ID	d	Distribution
Pimelodus maculatus	*Demidospermus majusculus*	18.50	26.06	Aggregate
	*Demidospermus bidiverticulatum*	6.35	12.03	Aggregate
	Demidospermus sp.	8.81	15.56	Aggregate
	*Ameloblastella paranaensis*	25.41	31.87	Aggregate
	Scleroductus sp.	39.89	41.92	Aggregate
	*Neochinorhynchus pimelodi*	15.25	22.93	Aggregate
	*Austrodiplostomum compactum*	1.99	3.26	Aggregate
	Helobdella sp.	83.87	64.27	Aggregate

Rhamdia quelen	*Aphanoblastella robustus*	79.07	60.17	Aggregate
	*Aphanoblastella mastigatus*	31.42	35.14	Aggregate

	Pimelodus maculatus	Rhamdia quelen
Brillouin (H)	1.18 ^± 1.30 (1.24)	1.12 ^± 1.26 (1.19)
Margalef (d)	1.20 ^± 1.20 (1.20)	0.88 ^± 1.06 (1.06)
Pielou (J)	0.52 ^± 0.57 (0.54)	0.61 ^± 0.70 (0.63)
Berger-Parker (d)	0.68 ^± 0.30 (0.66)	0.30 ^± 0.47 (0.42)

Parasites	Host	infection / infestation	Locality	Reference
Acanthocephala
Pomphorhynchus sphaericus	PM	-	Argentina	Pertierra et al. (1996)PERTIERRA AAG, SPATZ L & DOMA IL. 1996. Systematics an metapopulation dynamics of Pomphorhynchus sphaericus n. sp. (Acanthocephala: Pomphorhynchidae) from freshwater siluriform fishes in the subtropical region of Argentina. Res Rev Parasitol 56: 33-39.
Neoechinorhynchus pimelodi	PM	Intestine	Brazil	Brasil-Sato & Pavanelli (1998, 1999BRASIL-SATO MC & PAVANELLI GC. 1999. Ecological and reproductive aspects of Neoechinorhynchus pimelodi (Eoacanthocephala, Neoechinorhynchidae) of Pimnelodus maculatus Lacepède (Siluroidei, Pimelodidae) of the São Francisco River, Brazil. Rev Bras Zool 16: 73-82.), Lopes et al. (2011)LOPES MS, FERNANDES BMM, BASTOS OP, COHEN SC & KOHN A. 2011. New hosts for two species of Acanthocephala of fishes from Paraná River, State of Paraná, Brazil. Rev Bras Zoociências 13: 29-32.
Neoechinorhynchus sp.	RQ	Intestine	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished).
Quadrigyrus machadoi	PM	Intestine	Brazil and Argentina	Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Chemes & Brusa (2013)CHEMES SB & BRUSA RG. 2013. Description of Quadrigyrus machadoi (Fabio, 1983) (Acanthocephala, Quadrigyridae) in native fish of Wetlands associated with the San Javier River, Santa Fé, Argentina. Neotrop Helminthol 7: 187-194.
Polymorphus sp.	RQ	Intestine	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished)., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Centrorhynchus sp.	RQ	Mesentery	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished).
Hirudinea
Helobdella sp.	PM	Gill	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Myzobdella sp.	PM	Gill	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Myzobdella uruguaiensis	RQ	Gill	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished).
Copepoda
Ergasilus chelangulatus	PM	Gill	Brazil	Thatcher & Brasil-Sato (2008)THATCHER V & BRASIL-SATO MC. 2008. Ergasilus chelangulatus sp. nov. (Copepoda: Ergasillidae) a branchial parasite of the freshwater catfish, Pimelodus maculatus from upper São Francisco River, Brazil. Rev Bras Zool 25: 512-514.
Ergasilus thatcheri	RQ	Gill	Brazil	Engers et al. (2000)ENGERS KB. 2000. Ergasilus thatcheri n. sp. (Copepoda, Poecilostomatoida, Ergasilidae) from the gills of Rhamdia quelen (Teleostei, Siluriformes, Pimelodidae) from Southern Brazil. J Parasitol 86: 945-947.
Gamispinus diabolicus	PM	Nasal cavitie	Brazil	Brasil-Sato et al. (2000)BRASIL-SATO MC, PAVANELLI GC & LUQUE JL. 2000. Ocorrência e aspectos quantitativos de Gamispinus diabolicus (Copepoda: Ergasilidae) parasitando o mandi-amarelo, Pimelodus maculatus (Siluroidei: Pimelodidae), no Rio Paraná, Brasil. Rev Univ Rural Ciênc Vida 22: 67-69., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Luque et al. (2013)LUQUE JL, VIEIRA FM, TAKEMOTO RM, PAVANELLI GC & EIRAS JC. 2013. Checklist of Crustacea parasitizing fishes from Brazil. Check List 9: 1449-1470.
Gamidactylus sp.	PM	-	Brazil	Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Luque et al. (2013)LUQUE JL, VIEIRA FM, TAKEMOTO RM, PAVANELLI GC & EIRAS JC. 2013. Checklist of Crustacea parasitizing fishes from Brazil. Check List 9: 1449-1470.
Therodamas sp.	PM	Gill	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Luque et al. (2013)LUQUE JL, VIEIRA FM, TAKEMOTO RM, PAVANELLI GC & EIRAS JC. 2013. Checklist of Crustacea parasitizing fishes from Brazil. Check List 9: 1449-1470.
Vaigamus sp.	PM	-	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Luque et al. (2013)LUQUE JL, VIEIRA FM, TAKEMOTO RM, PAVANELLI GC & EIRAS JC. 2013. Checklist of Crustacea parasitizing fishes from Brazil. Check List 9: 1449-1470.
Lernaea cyprinacea	RQ	Pectoral fins and buccal cavity	Brazil	Furtado et al. (2019)FURTADO WE, CARDOSO L, FIGUEREDO AB, MARCHIORI NC & MARTINS ML. 2019. Histological and hematological alterations of silver catfish Rhamdia quelen highly parasitized by Lernaea cyprinacea. Dis Aquat Org 135: 157-168.
Isopoda
Telotha sp.	PM	Gill	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Riggia sp.	RQ	Abdominal cavity	Ecuador	Anaguano-Yancha & Brito (2015)ANAGUANO-YANCHA F & BRITO JM. 2015. Parasitismo de Riggia sp. (Isopoda: Cymothoidae) en dos especies de peces Chaetostoma sp. y Rhamdia quelen del suroriente del Ecuador. Av Cienc Ing 7: 13-16.
Cestoda
Endorchis sp.	PM	Intestine	Paraguay	Chambrier & Vaucher (1999)CHAMBRIER A & VAUCHER C. 1999. Proteocephalidae et Monticellidae (Eucestoda: Proteocephalidea) parasites de poissons d’eau au Paraguay, avec descriptions d’um genre nouveau et de dix espèces nouvelles. Rev Suisse Zool 106: 165-240.
Monticellia loyolai	PM	Intestine	Brazil	Pavanelli & Machado dos Santos (1992)PAVANELLI GC & MACHADO DOS SANTOS MHM. 1992. Goezeella agostinhoi sp. n. e Monticellia loyolai sp. n., cestoides proteocefalideos parasitas de peixes pimelodideos do rio Paraná, Brasil. Rev Bras Parasitol Vet 1: 45-50., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165.
Nomimoscolex microacetabula	PM	Intestine	Argentina	Pertierra (1995)PERTIERRA AAG. 1995. Nomimoscolex microacetabula sp. n. y N. pimelodi sp. n. (Cestoda: Proteocephalidea) parasitos de Siluriformes del Rio de la Plata. Neotrópica 41: 19-26.
Nomimoscolex pimelodi	PM	Intestine	Argentina	Pertierra (1995)PERTIERRA AAG. 1995. Nomimoscolex microacetabula sp. n. y N. pimelodi sp. n. (Cestoda: Proteocephalidea) parasitos de Siluriformes del Rio de la Plata. Neotrópica 41: 19-26.
Nomimoscolex sp.	PM	Intestine	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107., Albuquerque et al. (2008)ALBUQUERQUE MC, SANTOS MD, MONTEIRO CM, MARTINS AN, EDERLI NB & BRASIL-SATO MC. 2008. Helmintos endoparasitos de Pimelodus maculatus Lacèpede, 1803, (Actinopterygii, Pimelodidae) de duas localidades (lagoa e calha do rio) do rio Guandu, estado do Rio de Janeiro, Brasil. Rev Bras Parasitol Vet 17: 113-119., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Monticellia magna	PM	Intestine	Argentina	Pertierra (2004)PERTIERRA AAG. 2004. Redescription of Monticellia magna (Rego, dos Santos & Silva, 1974) (Eucestoda: Monticelliidae) parasite of Pimelodus spp. (Pisces: Siluriformes) from Argentina, and morphological study of microtriches. Rev Suisse Zool 11: 11-20.
Goezeella agostinhoi	PM	Intestine	Brazil	Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114.
Valipora sp.	PM	Gallbladder	Brazil	Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Proteocephalus bagri	RQ	Intestine	Argentina	Pertierra (2002)PERTIERRA AAG. 2002. Redescription of Proteocephalus bagri and P. rhamdiae (Cestoda: Proteocephalidae), parasites of Rhamdia quelen (Siluriformes: Pimelodidae) from South America, with comments on morphological variation. Folia Parasitol 49: 55-66.
Proteocephalus rhamdiae	RQ	Intestine	Argentina	Pertierra (2002)PERTIERRA AAG. 2002. Redescription of Proteocephalus bagri and P. rhamdiae (Cestoda: Proteocephalidae), parasites of Rhamdia quelen (Siluriformes: Pimelodidae) from South America, with comments on morphological variation. Folia Parasitol 49: 55-66.
Digenea
Crepidostomum platense	PM	Estomach and intestine	Brazil and Argentina	Kohn & Fróes (1986)KOHN A & FRÓES OM. 1986. Saccocoeloides godoyi n. sp. (Haploporidae) and other trematodes parasites of fishes from the Guaíba Estuary, RS, Brazil. Mem Inst Oswaldo Cruz 81: 62-72., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Núñez et al. (2017)NúñEZ MO, ARREDONDO NJ & PERTIERRA AAG. 2017. Adult Trematodes (Platyhelminthes) of freshwater fi shes from Argentina: a checklist. Rev Suisse Zool 124: 91-113.
Creptotrema creptotrema	PM	Intestine	Brazil	Kohn & Fróes (1986)KOHN A & FRÓES OM. 1986. Saccocoeloides godoyi n. sp. (Haploporidae) and other trematodes parasites of fishes from the Guaíba Estuary, RS, Brazil. Mem Inst Oswaldo Cruz 81: 62-72., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Parspina argentinensis	PM	Estomach and intestine	Brazil and Argentina	Kohn & Fróes (1986)KOHN A & FRÓES OM. 1986. Saccocoeloides godoyi n. sp. (Haploporidae) and other trematodes parasites of fishes from the Guaíba Estuary, RS, Brazil. Mem Inst Oswaldo Cruz 81: 62-72., Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114., Núñez et al. (2017)NúñEZ MO, ARREDONDO NJ & PERTIERRA AAG. 2017. Adult Trematodes (Platyhelminthes) of freshwater fi shes from Argentina: a checklist. Rev Suisse Zool 124: 91-113.
Thometrema overstreeti	PM	Estomach and intestine	Brazil	Kohn et al. (1990)KOHN A, FERNANDES BMM, GIBSON DI & FRÓES OM. 1990. On the Brazilian species of halipegine genera (Trematoda: Derogenidae) from fishes, with new morphological data, hosts and synonyms. Syst Parasitol 16: 201-211., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Plehniella coelomica	PM	Cavity celomatic	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Prosthenhystera obesa	PM	Gallbladder	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Clinostomum sp.	PM	Gill Muscle	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Clinostomum complanatum	RQ	Muscle, gill, fins and eyes	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished)., Vianna et al. (2005)VIANNA RT, JúNIOR JP & BRANDãO DA. 2005. Clinostomum complanatum (Digenea, Clinostomidae) density in Rhamdia quelen (Siluriformes, Pimelodidae) from South Brazil. Braz Arch Biol Technol 48: 635-642., Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.
Clinostomum detruncatum	RQ	-	Brazil	Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Diplostomum sp.	PM	Eyes, cephalic renal parenchyma, bladder musculature and pharyngeal plate	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Brasil-Sato & Pavanelli (2004)BRASIL-SATO MC & PAVANELLI GC. 2004. Digenea de Pimelodus maculatus (Osteichthyes, Pimelodidae) das bacias dos rios São Francisco e Paraná, Brasil. Parasitol Latinoam 59: 123-131., Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Austrodiplostomum compactum	PM	Eyes	Brazil	Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107.
Genarchella parva	PM/RQ	Stomach	-	Núñez et al. (2017)NúñEZ MO, ARREDONDO NJ & PERTIERRA AAG. 2017. Adult Trematodes (Platyhelminthes) of freshwater fi shes from Argentina: a checklist. Rev Suisse Zool 124: 91-113.
Genarchella sp.	RQ	Stomach, intestine	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished)., Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.
Crocodilicola pseudostoma	RQ	Body cavity	Brazil	Armas de Conroy (1986)ARMAS DE CONROY G. 1986. Crocodilicola pseudostoma (Willemoes-Suhm, 1870) Poche, 1925 (Trematoda: Proterodiplostomatidae), endoparásito del bagre pimelódido Rhamdia hilarii Val., 1840 del Estado de São Paulo, Brasil. Rev Ibér Parasitol 46: 35-38.
Phyllodistomum rhamdiae	RQ	Urinary bladder	Brazil	Amato & Amato (1993)AMATO SB & AMATO JFR. 1993. A new species of Phyllodistomum Braun, 1899 (Digenea: Gorgoderidae) from Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Pimelodidae). Mem Inst Oswaldo Cruz 88: 557-559.
Tylodelphys destructor	RQ	Celtic cavity, cephalic kidney, heart, swim bladder, gonad and intestine	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished)., Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.
Acanthostomum sp.	RQ	Stomach and intestine	Brazil	Morais (2005)MORAIS NCM. 2005. Helmintos parasitos de Jundiá, Rhamdia quelen (Quoy & Gaimard 1824) (Siluriformes) coletados em ambiente natural e em estação de piscicultura no sul do RS. Universidade Federal de Pelotas, Dissertação de Mestrado. (Unpublished)., Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.
Monogenea
Ameloblastella platensis	PM	Gill	Argentina and Brazil	Suriano & Incorvaia (1995)SURIANO DM & INCORVAIA IS. 1995. Ancyrocephalid (Monogenea) parasites from siluriform fishes from the Paranean-Platean ichthyogeographical Province in Argentina. Acta Parasitol 40: 113-124., Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Ameloblastella paranaensis	PM	Gill	Brazil	Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Ameloblastella satoi	PM	Gill	Brazil	Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Ameloblastella chavarriai	RQ	Gill	-	Thatcher (2006)THATCHER VE. 2006. Amazon Fish Parasites, 2nd ed., Moscow: Pensoft Publishers, p. 508.
Aphanoblastella sp.	PM/RQ	Gill	Brazil	Venancio et al. (2010)VENANCIO ACP, AGUIAR GR, LOPES OS & ALVES DR. 2010. Metazoan parasites of Mandi-amarelo Pimelodus maculatus and of Jundiá Rhamdia quelen (Osteichthyes: Siluriformes) of Paraiba do Sul River, Volta Redonda, Rio de Janeiro. Rev Bras Parasitol Vet 19: 157-163.
Aphanoblastella juizforense	RQ	Gill	Brazil	Carvalho et al. (2009)CARVALHO AR, TAVARES LER & LUQUE JL. 2009. A new species of Aphanoblastella (Monogenea: Dactylogyridae) parasitic on Rhamdia quelen (siluriformes: Heptapteridae) from Southeastern Brazil. Acta Sci Biol Sci 31: 323-325.
Aphanoblastella mastigatus	RQ	Gill	Brazil	Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Demidospermus sp.	PM	Gill	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Demidospermus bidiverticulatum	PM	Gill	Argentina and Brazil	Kritsky & Gutiérrez (1998)KRITSKY DC & GUTIéRREZ PA. 1998. Neotropical Monogenoidea. 34. Species of Demidospermus (Dactylogyridae, Ancyrocephalinae) from the Gills of Pimelodids (Teleostei, Siluriformes) in Argentina. J Helminthol Soc Wash 65: 147-159., Gutiérrez & Martorelli (1999a, b), Cohen & Kohn (2008)COHEN SC & KOHN A. 2008. New data on species of Demidospermus (Dactylogyridae: Monogenea) parasitizing fishes from the Reservoir of the Itaipú Hydroelectric Power Station, Paraná State, Brazil, with new synonymies. Rev Bras Parasitol Vet 17: 167-170., Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Demidospermus paravalenciennesi	PM	Gill	Argentina and Brazil	Kritsky & Gutiérrez (1998)KRITSKY DC & GUTIéRREZ PA. 1998. Neotropical Monogenoidea. 34. Species of Demidospermus (Dactylogyridae, Ancyrocephalinae) from the Gills of Pimelodids (Teleostei, Siluriformes) in Argentina. J Helminthol Soc Wash 65: 147-159., Gutiérrez & Martorelli (1999a, b), Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107., Cohen & Kohn (2008)COHEN SC & KOHN A. 2008. New data on species of Demidospermus (Dactylogyridae: Monogenea) parasitizing fishes from the Reservoir of the Itaipú Hydroelectric Power Station, Paraná State, Brazil, with new synonymies. Rev Bras Parasitol Vet 17: 167-170., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667., Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Demidospermus uncusvalidus	PM	Gill	Argentina and Brazil	Kritsky & Gutiérrez (1998)KRITSKY DC & GUTIéRREZ PA. 1998. Neotropical Monogenoidea. 34. Species of Demidospermus (Dactylogyridae, Ancyrocephalinae) from the Gills of Pimelodids (Teleostei, Siluriformes) in Argentina. J Helminthol Soc Wash 65: 147-159., Gutiérrez & Martorelli (1999a, b), Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107., Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Demidospermus armostus	PM	Gill	Argentina and Brazil	Gutiérrez & Martorelli (1999a,GUTIéRREZ PA & MARTORELLI SR. 1999a. Niche preferences and spatial distribution of Monogenea on the gills of Pimelodus maculatus in Rio de la Plata (Argentina). Parasitology 119: 183-188., bGUTIéRREZ PA & MARTORELLI SR. 1999b. The structure of the monogenean community on the gills of Pimelodus maculatus in Rio de la Plata (Argentina). Parasitology 119: 177-182.), Cohen & Kohn (2008)COHEN SC & KOHN A. 2008. New data on species of Demidospermus (Dactylogyridae: Monogenea) parasitizing fishes from the Reservoir of the Itaipú Hydroelectric Power Station, Paraná State, Brazil, with new synonymies. Rev Bras Parasitol Vet 17: 167-170., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667., Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Demidospermus majusculus	PM	Gill	Brazil	Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107.
Demidospermus ichthyocercus	PM	Gill	Brazil	Monteiro et al. (2010)MONTEIRO CM, KRITSKY DC & BRASIL-SATO MC. 2010. Neotropical Monogenoidea. 55. dactylogyrids parasitising the pintado-amarelo Pimelodus maculatus Lacépède (Actinopterygii: Pimelodidae) from the Rio São Francisco, Brazil. Syst Parasitol 76: 179-190.
Demidospermus leptosynophallus	PM	Gill	Brazil	Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Pavanelliella pavanellii	PM	Nasal cavity	Brazil	Brasil-Sato & Pavanelli (2000)BRASIL-SATO MC & PAVANELLI GC. 2000. Pavanelliella pavanellii Kritsky and Boeger, 1998 (Monogenea: Dactylogyridae) parasito das cavidades nasais de Pimelodus maculatus Lac., 1803, “mandi”, das bacias do Rio São Francisco e do Rio Paraná, Brasil. Parasitol Día 24: 123-126.
Pavanelliella takemotoi	PM	Nasal cavity	Brazil	Aguiar et al. (2011)AGUIAR JC, CECARRELLI PJ & LUQUE JL. 2011. Two new species of Pavanelliella (Monogenea, Dactylogyridae) parasitic on pimelodid fishes from Mogi Guaçú river, Southeastern Brazil, and notes on the morphology of P. pavanellii. Neotrop Helminthol 5: 213-224.
Unibarra sp.	PM	Gill	Brazil	Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Unibarra paranoplatensis	PM	Gill	Argentina	Suriano & Incorvaia (1995)SURIANO DM & INCORVAIA IS. 1995. Ancyrocephalid (Monogenea) parasites from siluriform fishes from the Paranean-Platean ichthyogeographical Province in Argentina. Acta Parasitol 40: 113-124., Negreiros et al. (2019)NEGREIROS LP, OLIVEIRA MSB & TAVARES-DIAS M. 2019. First record of Unibarra paranoplatensis Suriano & Incorvaia, 1995 (Dactylogyridae: Monogenea) on Sorubim lima (Siluriformes: Pimelodidae) from Brazil. Braz J Vet Parasitol 28: 504-507.
Scleroductus sp.	PM/RQ	Gill	Brazil	Kritsky et al. (1995KRITSKY DC, BOEGER WA & POPAZOGLO F. 1995. Neotropical Monogenoidea. 22. Variation in Scleroductus species (Gyrodactylidea, Gyrodactylidae) from siluriform fishes of southeastern Brazil. J Helminthol Soc Wash 62: 53-56., 2013KRITSKY DC, BOEGER WA, MENDOZA-FRANCO EF & VIANNA RT. 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 (Gunther) (Siluriformes: Heptapteridae) in Mexico and the barred sorubim Pseudoplatystoma fasciatum (Linnaeus) (Siluriformes: Pimelodidae) in Brazil. Syst Parasitol 84: 1-15.), Ferrari-Hoeinghaus et al. (2006)FERRARI-HOEINGHAUS AP, TAKEMOTO RM, OLIVEIRA LC, MAKRAKIS MC & BAUMGARTNER G. 2006. Host-parasite relationships of monogeneans in gills of Astyanax altiparanae and Rhamdia quelen of the São Francisco Verdadeiro River, Brazil. Parasite 13: 315-320., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107.
Scleroductus yuncensi	PM	Gill	Argentina	Gutiérrez & Martorelli (1999a, b)
Kritskyia moraveci	RQ	Urinary bladder and ureters	Brazil	Kohn (1990)KOHN A. 1990. Kritskyia moraveci n. g., n. sp. (Monogenea: Dactylogyridae) from the urinary bladder and ureters of Rhamdia quelen (Quoy & Gaimard, 1824) (Pisces: Pimelodidae) in Brazil. Syst Parasitol 17: 81-85.
Urocleidoides mastigatus	RQ	Gill	Brazil	Ferrari-Hoeinghaus et al. (2006)FERRARI-HOEINGHAUS AP, TAKEMOTO RM, OLIVEIRA LC, MAKRAKIS MC & BAUMGARTNER G. 2006. Host-parasite relationships of monogeneans in gills of Astyanax altiparanae and Rhamdia quelen of the São Francisco Verdadeiro River, Brazil. Parasite 13: 315-320.
Gyrodactylus lilianae	RQ	Surface, fins and barbels	Brazil	Razzolini et al. (2019)RAZZOLINI E, MURARI AL, BALDISSEROTTO B & BOEGER WA. 2019. Gyrodactylus lilianae n. sp. (Polyonchoinea: Gyrodactylidae) from Rhamdia quelen (Quoy & Gaimard) (Siluriformes: Heptapteridae) from southern Brazil: a potential nuisance for aquaculture. Syst Parasitol 96: 407-415.
Myxozoan
Henneguya sp.	PM	Gill	Brazil	Martins et al. (2004)MARTINS ML, ONAKA EM, BOZZO FR & FENERICK J. 2004. Henneguya sp. (Myxozoa: Myxobolidae) in Pimelodus maculatus (Osteichthyes: Siluridae) from Volta Grande Reservoir, Minas Gerais, Brazil. Bol Inst Pesca 30: 1-7., Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107.
Henneguya rhamdia	RQ	Gill	Brazil	Matos et al. (2005)MATOS E, TAJDARI J & AZEVEDO C. 2005. Ultrastructural studies of Henneguya rhamdia n. sp. (Myxozoa) a parasite from the Amazon teleost fish, Rhamdia quelen (Pimelodidae). J Eukaryot Microbiol 52: 532-537.
Henneguya jundiai	RQ	Gill	Brazil	Negrelli et al. (2019)NEGRELLI DC, VIEIRA DHMD, TAGLIAVINI VP, ABDALLAH VD & DE AZEVEDO RK. 2019. Molecular and morphological analysis of Henneguya jundiai n. sp. (Cnidaria: Myxosporea), a new parasite of the gills of Rhamdia quelen in Brazil. Acta Trop 197: 105053.
Myxobolus sp.	PM	Gill	Brazil	Cordeiro et al. (1989)CORDEIRO NS, GIOIA I & CELLERE EF. 1989. Myxosporean parasites of Pimelodus maculatus Lacépède, 1803. V Reuniäo Sociedade Brasileira de Protozoológica, Caxambu. Mem Inst Oswaldo Cruz 11: 84-170.
Myxobolus absonus	PM	Gill and opercular cavity	Brazil	Cellere et al. (2002)CELLERE EF, CORDEIRO NS & ADRIANO EA. 2002. Myxobolus absonus sp. n. (Myxozoa: Myxosporea parasitizing Pimelodus maculatus (Siluriformes: Pimelodidae), a South American Freshwater fish. Mem Inst Oswaldo Cruz 97: 79-80., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107.
Myxobolus marajoensis	RQ	Intestine	Brazil	Abrunhosa et al. (2017)ABRUNHOSA J, SINDEAUX-NETO JL, DOS SANTOS AK, HAMOY I & MATOS E. 2017. Myxobolus marajoensis sp. n. (Myxosporea: Myxobolidae), parasite of the freshwater catfish Rhamdia quelen from the Brazilian Amazon region. Braz J Vet Parasitol 26: 465-471.
Nematoda
Rhaphidascaris (Sprentascaris) pimelodi	PM	Intestine	Paraguay	Petter & Cassone (1984)PETTER A & CASSONE J. 1984. Nematodes from fish in Paraguay.1. Ascaridoidea: Sprentascaris, n. gen. Rev Suisse Zool 91: 617-634.
Spinitectus sternopygi	PM	-	-	Thatcher (1991)THATCHER VE. 1991. Amazon Fishes Parasites. Manaus: Instituto Nacional de Pesquisas da Amazônia. Amazoniana, p. 263-572.
Cucullanus sp.	PM/RQ	Intestine	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Cuccullanus patoi	PM	Intestine	Brazil	Fortes et al. (1992)FORTES E, HOFFMANN RP & SARMENTO TM. 1992. Descrição de Cucullanus patoi sp.n. (Nematoda, Cucullanidae) de pintado Pimelodus maculatus Lacépède, 1803 (Pisces), do Lago do Guaíba, RS, Brasil. Cienc Rural 22: 325-328., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Cucullanus fabregasi	PM	Intestine	Brazil	Fortes et al. (1993a)FORTES E, HOFFMANN RP & SARMENTO TM. 1993a. Cucullanus fabregasi sp. n.: Nematoda parasita do intestino do peixe Pimelodus maculatus Lacépède, 1803 do Rio Guaíba, Porto Alegre, Rio Grande do Sul, Brasil. Arq Fac Vet UFRGS 21: 71-76., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Cucullanus riograndensis	PM	Intestine	Brazil	Fortes et al. (1993b)FORTES E, HOFFMANN RP & SARMENTO TM. 1993b. Nova espécie de nematódeo Cucullanus, C. riograndensis sp. n. de Pimelodus maculatus Lacépède, 1803 do Lago do Guaíba, Rio Grande do Sul, Brasil. Rev Bras Med Vet 15: 79-82., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Cucullanus debacoi	PM	Intestine	Brazil	Sarmento et al. (1995)SARMENTO TM, FORTES E & HOFFMANN RP. 1995. Cucullanus debacoi sp. n. Nematoda, parasito do intestino do Pimelodus maculatus Lacépède, 1803 (Pisces, Pimelodidae) do rio Guaíba, Porto Alegre, Rio Grande do Sul. A Hora Vet 15: 38-40., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Cucullanus pinnai	PM/RQ	Stomach, celomatic cavity, intestine	Brazil	Vicente & Pinto (1999)VICENTE JJ & PINTO RM. 1999. Nematoides do Brasil: Nematoides de Peixes Atualização 1985-1998. Rev Bras Zool 16: 561-610., Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Santos et al. (2007)SANTOS MD, LEMOS-PITA SRLDC & BRASIL-SATO MC. 2007. Metazoan parasite fauna of Pimelodus maculatus Lacepède, 1803 (Siluriformes, Pimelodidae) from the Guandu river, Rio de Janeiro State, Brazil. Brazil. Acta Sci Biol Sci 29: 101-107., Albuquerque et al. (2008)ALBUQUERQUE MC, SANTOS MD, MONTEIRO CM, MARTINS AN, EDERLI NB & BRASIL-SATO MC. 2008. Helmintos endoparasitos de Pimelodus maculatus Lacèpede, 1803, (Actinopterygii, Pimelodidae) de duas localidades (lagoa e calha do rio) do rio Guandu, estado do Rio de Janeiro, Brasil. Rev Bras Parasitol Vet 17: 113-119., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Venancio et al. (2010)VENANCIO ACP, AGUIAR GR, LOPES OS & ALVES DR. 2010. Metazoan parasites of Mandi-amarelo Pimelodus maculatus and of Jundiá Rhamdia quelen (Osteichthyes: Siluriformes) of Paraiba do Sul River, Volta Redonda, Rio de Janeiro. Rev Bras Parasitol Vet 19: 157-163.
Contracaecum sp.	PM/RQ	Mesentery, gonada, stomach, intestine and liver	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Madi & Silva (2005)MADI RR & SILVA MSR. 2005. Contracaecum Railliet & Henry, 1912 (Nematoda, Anisakidae): o parasitismo relacionado à biologia de três espécies de peixes piscívoros no reservatório do Jaguari, SP. Rev Bras Zoociências 7: 15-24., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705., Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667., Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.
Goezia sp.	PM	Intestine	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Goezia spinulosa	PM	Stomach	-	Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Dichelyne sp.	PM	Intestine	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165.
Dichelyne pimelodi	PM	Intestine	Brazil	Moravec et al. (1997)MORAVEC F, KOHN A & FERNANDES BMM. 1997. New observations on Seuratoid nematodes parasitic in fishes of the Paraná River, Brazil. Folia Parasitol 44: 209-223., Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114., Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Philometra sp.	PM	-	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Monhysterides sp.	PM	Intestine	Brazil	Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Procamallanus (Spirocamallanus) sp.	PM	Intestino	Brazil	Vicente & Pinto (1999)VICENTE JJ & PINTO RM. 1999. Nematoides do Brasil: Nematoides de Peixes Atualização 1985-1998. Rev Bras Zool 16: 561-610., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Procamallanus (Spirocamallanus) freitasi	PM	Intestine	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165.
Procamallanus (Spirocamallanus) pimelodus	PM	Intestino	Brazil	Bachmann et al. (2007)BACHMANN F, GREINERT JA, BERTELLI PW, DA SILVA FILHO HH, DE LARA NOT, GHIRALDELLI L & MARTINS ML. 2007. Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil. Acta Sci Biol Sci 29: 109-114.
Procamallanus (Spirocamallanus) rarus	PM	Intestino	-	Yamada & Takemoto (2013)YAMADA FH & TAKEMOTO RM. 2013. Metazoan parasite fauna of two peacock-bass cichlid fish in Brazil. Check List 9: 1371-1377.
Procamallanus (Spirocamallanus) hilarii	RQ	-	-	Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Eustrongylides sp.	PM	Body cavity	Brazil	Brasil-Sato (2003)BRASIL-SATO MC. 2003. Parasitos de peixes da bacia do São Francisco. In: Godinho HP and Godinho AL. Águas, peixes e pescadores do São Francisco das Minas Gerais, Belo Horizonte: PucMinas, p. 149-165., Takemoto et al. (2009)TAKEMOTO RM, PAVANELLI GC, LIZAMA MAP, LACERDA ACF, YAMADA FH, MOREIRA LHA, CESCHINI TL & BELLAY S. 2009. Diversity of parasites of fishes from the Upper Paraná River floodplain, Brazil. Braz J Biol 69: 691-705.
Rondonia rondoni	PM	-	-	Luque et al. (2011)LUQUE JL, AGUIAR JC, VIEIRA FM, GIBSON DI & SANTOS CP. 2011. Checklist of Nematoda associated with the fishes of Brazil. Zootaxa 3082: 1-88.
Rhabdochona uruyeni	PM	Intestine	Brazil	Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Rhabdochona kidderi	RQ	-	Mexico	Moravec et al. (2012)MORAVEC F, SALGADO-MALDONADO G, GONZáLEZ-SOLíS D & CASPETA-MANDUJANO JM. 2012. Host-parasite relationships of Rhabdochona kidderi Pearse, 1936 (Nematoda: Rhabdochonidae) in fishes of the Lacantún River in the Lacandon rain forest of Chiapas State, southern Mexico, with a key to Mexican species of Rhabdochona Railliet, 1916. Syst Parasitol 82: 1-12.
Capillariidae gen. sp.	RQ	-	Brazil	Azevedo et al. (2010)AZEVEDO RK, ABDALLAH VD & LUQUE JL. 2010. Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platylminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil. Check List 6: 659-667.
Hysterothylacium sp.	RQ	Stomach and intestine	Brazil	Dias et al. (2016)DIAS JC, POZZA A, PESENTI TC, PEREIRA JR J & BERNE MEA. 2016. Helmintos parasitos de Rhamdia quelen (Quoy & Gaimard, 1824) no Sul do Brazil. Sci Anim Health 4: 2-20.

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[1] Correspondence to: Rodney Kozlowiski de Azevedo