Parasitism by Monogenoidea in Piaractus mesopotamicus (Characiformes, Characidae) cultivated in Paraná River (Brazil)

Abstract This study investigated the occurrence, prevalence, mean abundance and mean intensity of monogenoidean parasites in Piaractus mesopotamicus farmed in cages in the reservoir of the Itaipu Hydroelectric Power Station, Paraná River, Brazil. The parasite distribution pattern and the correlation of prevalence and abundance with the total length of hosts were also investigated. Four monogenoidean species were collected: Anacanthorus penilabiatus, A. toledoensis, Mymarothecium ianwhitingtoni and M. viatorum. All the parasites collected in P. mesopotamicus showed the typical aggregated distribution pattern, and the abundance and the prevalence did not shown any correlation with the total length of hosts.

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Redescription of Rhipidocotyle jeffersoni (Kohn, 1970) Overstreet & Curran, 2002 (Digenea: Bucephalidae)

Zootaxa ◽

10.11646/zootaxa.1193.1.2 ◽

2006 ◽

Vol 1193 (1) ◽

pp. 41-47

Author(s):

ANNA KOHN ◽

BERENICE M.M. FERNANDES

Keyword(s):

Paraná River ◽

Morphological Data ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

Power Station ◽

Type Host ◽

Parana River ◽

Salminus Brasiliensis

Rhipidocotyle jeffersoni (Kohn, 1970) Overstreet & Curran, 2002 is redescribed, based on the holotype and on additional specimens from the intestine of the type-host Salminus brasiliensis (= S. maxillosus) (Characidae), collected at different dates and from several localities of the Paraná River and the hydroelectric power station reservoir of Itaipu, Paraná State, Brazil. Rhipidocotyle jeffersoni is compared with all other species in the genus to confirm its validity. New morphological data, such as different positions of the ovary, testes and caeca, and the extent of the uterus are presented and considered to be specific variations.

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Helminths of freshwater fishes in the reservoir of the Hydroelectric Power Station of Itaipu, Paraná, Brazil

Check List ◽

10.15560/7.5.681 ◽

2011 ◽

Vol 7 (5) ◽

pp. 681 ◽

Cited By ~ 25

Author(s):

Anna Kohn ◽

Frantisek Moravec ◽

Simone C. Cohen ◽

Carla Canzi ◽

Ricardo M. Takemoto ◽

...

Keyword(s):

Freshwater Fishes ◽

Paraná River ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

Power Station ◽

New Host ◽

Parana River ◽

Upper Paraná River ◽

Host Parasite ◽

New Host Records

This study presents results from several expeditions in 1985, 1991-1995 and 2003 to the Medium Paraná River in the section that begins below the Itaipu Dam and ends at the trinational border of Brazil, Argentina and Paraguay, in the lotic and lentic zones of the reservoir of the Hydroelectric Power Station of “Itaipu Binacional” (localities Foz do Iguaçu, Santa Helena and Guaira). Ninety-eight species of freshwater fishes belonging to 22 families were examined for helminths. A host-parasite list based on Acanthocephala, Cestoda, Digenea, Monogenea and Nematoda collected from the region in question is provided. New host records are presented for Digenea and Nematoda. The Monogenea and Acanthocephala are being studied and will be published in a later paper, but are referred in the host-parasite list, in order to demonstrate the parasitism in the fishes of the reservoir. The results are compared with those presented by other authors from the Upper Paraná River.

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Prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) in Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842001000300022 ◽

2001 ◽

Vol 61 (3) ◽

pp. 517-522 ◽

Cited By ~ 19

Author(s):

M. L. MARTINS ◽

F. R. de MORAES ◽

R. Y. FUJIMOTO ◽

E. M. ONAKA ◽

C. I. F. QUINTANA

Keyword(s):

Inflammatory Reaction ◽

Intestinal Epithelium ◽

Goblet Cells ◽

Hydroelectric Power Station ◽

Histopathological Analysis ◽

Hydroelectric Power ◽

Power Station ◽

Prochilodus Lineatus ◽

Mean Intensity ◽

Severe Inflammatory Reaction

The present work studied the prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) from curimbatá, Prochilodus lineatus Valenciennes, 1836. Eighteen fishes with averages of 46.7 + 1.1 cm length and 1,674.8 + 75.6 g weight were collected with net, bimonthly from December 1995 thru December 1996 in the hydroelectric power station of Volta Grande Reservoir (Cemig), Minas Gerais, Brazil. From analysed fishes, 15 were infected with acanthocephalans in the intestine (prevalence 83.3%). The greatest mean intensity occurred in August 1996 with 66.5 (16 to 208) parasites. Histopathological analysis showed complete desquamation of the intestinal epithelium with severe hyperplasia and hypertrofia of the goblet cells. Severe inflammatory reaction at the submucosa, displacement of their sheaf, associated with oedema and mononuclear and eosinophilic infiltration were observed.

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Endohelminths in Cichla piquiti(Perciformes, Cichlidae) from the Paraná River, São Paulo State, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612013000400006 ◽

2013 ◽

Vol 22 (4) ◽

pp. 475-484 ◽

Cited By ~ 12

Author(s):

Lidiane Franceschini ◽

Aline Cristina Zago ◽

Maria Conceição Zocoller-Seno ◽

Rosicleire Veríssimo-Silveira ◽

Alexandre Ninhaus-Silveira ◽

...

Keyword(s):

Parasite Species ◽

Paraná River ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

New Host ◽

Parana River ◽

Third Stage ◽

Host Parasite Relationship ◽

Parasite Relationship ◽

Host Parasite

Fifty specimens of Cichla piquiti were collected from the Paraná River downstream of the Ilha Solteira Hydroelectric Power Station in Brazil and surveyed for endohelminth parasites. All fish were parasitised by at least one helminth species (overall prevalence [P] = 100%). Eight parasite taxa were present: the nematode Procamallanus(Procamallanus) peraccuratus in the intestines; third-stage larvae of the anisakids Contracaecumsp. and Hysterothylacium sp. in the visceral cavity, mesentery and serosa of the stomach and intestines and on the liver and spleen; the trematodes Austrodiplostomum compactum in the eye (metacercariae) and Genarchella genarchella in the stomach; and the cestodes Proteocephalus macrophallus, Proteocephalus microscopicus, and Sciadocephalus megalodiscus in the intestines. Hysterothylaciumsp. larvae (P = 86%) and P. microscopicus (P = 74%) were the most prevalent parasites. Anisakids were more prevalent and abundant in the dry season. A negative correlation between the abundances of Hysterothylacium sp. and P. microscopicuswas observed, suggesting a competitive/antagonistic relationship between these parasites. Cichla piquiti represents a new host for four parasite species. These new records significantly increase the list of parasites of C. piquiti, contributing to the knowledge of the host-parasite relationship and the geographical distribution of these helminths.

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Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent

Neotropical Ichthyology ◽

10.1590/s1679-62252012000400011 ◽

2012 ◽

Vol 10 (4) ◽

pp. 785-795 ◽

Cited By ~ 21

Author(s):

Ricardo Luiz Wagner ◽

Sergio Makrakis ◽

Theodore Castro-Santos ◽

Maristela Cavicchioli Makrakis ◽

João Henrique Pinheiro Dias ◽

...

Keyword(s):

Hydroelectric Power Plant ◽

Paraná River ◽

Failure Rates ◽

Migratory Fish ◽

Hydroelectric Power ◽

Long Distance ◽

Prochilodus Lineatus ◽

Piaractus Mesopotamicus ◽

Parana River ◽

Large Dam

This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil. The evaluation was designed to quantify entry and passage proportions of 4 long-distance migratory fish species: Brycon orbignyanus (piracanjuba), Piaractus mesopotamicus (pacu), Prochilodus lineatus (curimba), and Rhinelepis aspera (cascudo-preto). Proportions finding and entering the fishway differed between species, ranged from 7.4 % (Prochilodus lineatus) to 55.4% (Piaractus mesopotamicus). Also, proportion passing was different between species, ranged from 31% (R. aspera) to 100% (Prochilodus lineatus). Fish that were marked and released within the fishway had greater failure rates than those that entered volitionally. Total time to pass ranged from 1.48 hours (Prochilodus lineatus) to 178.9 hours (R. aspera). Failure rates were greatest in the lower end of the fishway. Although some individuals of all species passed successfully, significant challenges remain to restoring connectivity of the upper Paraná River.

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Preliminary data on the feeding habits of the freshwater stingrays Potamotrygon falkneri and Potamotrygon motoro (Potamotrygonidae) from the Upper Paraná River basin, Brazil

Biota Neotropica ◽

10.1590/s1676-06032007000100027 ◽

2007 ◽

Vol 7 (1) ◽

pp. 221-226 ◽

Cited By ~ 15

Author(s):

Thiago Buosi Silva ◽

Virgínia Sanches Uieda

Keyword(s):

Feeding Habits ◽

River System ◽

Paraná River ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

Parana River ◽

Food Items ◽

Paraguay River ◽

Upper Paraná River ◽

Specialized Diet

Stingrays of the Potamotrygonidae family are a singular group of Neotropical ichthyofauna. Although ancient reports exist about the group, there are still many questions that need to be clarified, such as the biology of the species that occur in the Paraná-Paraguay River system. In the present work, the diet of Potamotrygon falkneri and Potamotrygon motoro, captured in the Upper Paraná River, downstream from the Engenheiro Souza Dias Hydroelectric Power Station (UHE Jupiá), was analyzed. Both species showed a diversified diet, consisting of 14 food items, including Mollusca, Crustacea, Insecta and fish, with the predominance in diversity and abundance of aquatic insects. Only one individual of each species ingested fish. Potamotrygon motoro consumed mainly Ephemeroptera, while P. falkneri consumed mainly Mollusca, Hemiptera and Trichoptera. The data apparently indicate a more specialized diet for P. motoro, consuming more Ephemeroptera (Baetidae), and a more generalized diet for P. falkneri. The analysis of individuals captured in three microhabitats that differ in function of the substrate type and presence of marginal vegetation, suggests differences in the food items consumed.

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