Echinorhynchus gomesi
            Machado Filho, 1948 infecting the Patinga hybrid (♀
            Piaractus mesopotamicus
             × ♂
            Piaractus brachypomus
            ) in fish farms in Mato Grosso do Sul, Brazil

Abstract This study evaluated the parasite fauna of farmed hybrid surubim (Pseudoplatystoma reticulatum x P. corruscans) and the host-parasite-environment relationship in two fish farms located in Mato Grosso do Sul, Central Brazil, South America. A total of 120 hybrids from two different farms, 60 in each season (30 in the hot and 30 in cold season) were examined during a year. Water quality was weekly measured to evaluate the interaction among environmental conditions and parasitism. Histopathology was used to observe the effects of the parasites and environment on the fish gills. The ciliate protozoan Ichthyophthirius multifiliis and the monogeneans (Ameloblastella sp., Amphocleithrium paraguayensis, Vancleaveus ciccinus, V. fungulus and V. janacauensis) were the most prevalent parasites detected in both seasons in both farms, with prevalence above 80%. It was stated that parasites did not cause important damage in the health status of the hybrid surubim. These results might be related to general good management practices and environmental quality implemented by the fish farmers. The presence of uncommon monogenean parasites to this hybrid compared to their parents causing an environmental and ecological concern is here discussed.

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Occurrence of two novel actinospore types (Cnidaria: Myxosporea) in Brazilian fish farms, and the creation of a novel actinospore collective group, Seisactinomyxon

Acta Parasitologica ◽

10.1515/ap-2017-0014 ◽

2017 ◽

Vol 62 (1) ◽

Cited By ~ 5

Author(s):

Tiago Milanin ◽

Stephen D. Atkinson ◽

Márcia R.M. Silva ◽

Roberto G. Alves ◽

Antônio A.M. Maia ◽

...

Keyword(s):

Fresh Water ◽

Life Cycles ◽

The State ◽

Fish Farm ◽

Fish Farms ◽

Mato Grosso ◽

Collective Group ◽

The Creation ◽

State 1 ◽

Mato Grosso Do Sul

AbstractThe involvement of oligochaetes in the life cycles of fresh water myxozoan parasites in Brazil was investigated. Of 333 oligochaetes collected in a fish farm in the State of São Paulo, three (0.9%) released Aurantiactinomyxon type spores. From 86 worms collected in a fish farm in Mato Grosso do Sul State, 1 (0.9%) released actinospores with a novel morphology for which we propose the name Seisactinomyxon. Infected oligochaetes were identified by morphology: all belonged to family Naididae, with

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Histopathology of gills of Piaractus mesopotamicus (Holmberg, 1887) and Prochilodus lineatus (Valenciennes, 1836) infested by monogenean and myxosporea, caugth in Aquidauana River, State of Mato Grosso do Sul, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612011000100014 ◽

2011 ◽

Vol 20 (1) ◽

pp. 67-70 ◽

Cited By ~ 17

Author(s):

Cristiane Meldau de Campos ◽

Julieta Rondini Engrácia de Moraes ◽

Flávio Ruas de Moraes

Keyword(s):

Histological Analysis ◽

Developmental Stages ◽

Inflammatory Cells ◽

Focal Points ◽

Mato Grosso ◽

Prochilodus Lineatus ◽

Piaractus Mesopotamicus ◽

Secondary Lamellae ◽

Routine Procedures ◽

Mato Grosso Do Sul

A histological analysis was conducted on the gills of 15 Piaractus mesopotamicus and 19 Prochilodus lineatus specimens collected between April and November 2004 from the Aquidauana River, State of Mato Grosso do Sul, Central-West Brazil, to describe the anatomopathological characteristics of the gills of these freshwater fish. Gill samples were fixated in 10% buffered formalin and processed following histological routine procedures. The histological examination of the gills of P. mesopotamicus revealed intralamellar monogenean and mixosporean cysts of Henneguya piaractus at several developmental stages over the entire (basal, median and distal) lamella. Intraepithelial cysts caused lamella dilation and deformity of adjacent lamellae. In P. lineatus gills, monogenean cysts were detected. In both host species, hyperplasia of the gill epithelium and structural disorganization of secondary lamellae was seen diffusely in the gills, leading to fused lamellae in the gills. In few cases, there was found mononuclear inflammatory cells and hemorrhagic focal points distally in the lamellae.

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Histopatologia de fígado, rim e baço de piaractus mesopotamicus, prochilodus lineatus e pseudoplatystoma fasciatum parasitados por myxosporídios, capturados no Rio Aquidauana, Mato Grosso do Sul, Brasil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612008000400006 ◽

2008 ◽

Vol 17 (4) ◽

pp. 200-205 ◽

Cited By ~ 14

Author(s):

Cristiane M. de Campos ◽

Julieta R. E. de Moraes ◽

Flávio R. de Moraes

Keyword(s):

Mato Grosso ◽

Prochilodus Lineatus ◽

Piaractus Mesopotamicus ◽

Mato Grosso Do Sul

Este estudo descreveu a histopatologia de rim, baço e fígado de Piaractus mesopotamicus, Prochilodus lineatus e Pseudoplatystoma fasciatum, parasitados por mixosporídios, capturados no Rio Aquidauana, MS. Após necropsia, amostras do fígado, rim cefálico e baço foram colhidas, fixadas em formalina a 10 % tamponada e processadas de acordo com a rotina histológica. Os cortes foram feitos à espessura de 5 μm e corados com hematoxilina-eosina. Foram encontrados Myxobolus porofilus em P. lineatus, M. colossomatis em P. mesopotamicus e Myxobolus spp. nas três espécies de hospedeiros. Cistos de mixosporídios no exame histopatológico foram vistos no fígado e baço de P. mesopotamicus. Mais de 50% das amostras de fígado de P mesopotamicus e P lineatus apresentou hepatodistrofia difusa. Mais de 80 % das amostras de fígado de P. fasciatum apresentou formações hialinas concêntricas e esteatose em 50% das amostras. Em 95,23 % das amostras de rins de P. mesopotamicus, foram observadas alterações teciduais, e em mais de 60 % dos casos nefrodistrofia difusa moderada e congestão de sinusóides glomerulares. Alterações teciduais nas amostras de rins de P. lineatus foram observadas em menos de 20 % da amostra. No baço dos peixes ora examinados não foram encontradas lesões dignas de relato.

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Occurrence of two novel actinospore types (Cnidaria: Myxozoa) in fish farms in Mato Grosso do Sul state, Brazil

Parasitology Research ◽

10.1007/s00436-018-5856-0 ◽

2018 ◽

Vol 117 (6) ◽

pp. 1757-1764 ◽

Cited By ~ 1

Author(s):

Tiago Milanin ◽

Stephen D. Atkinson ◽

Márcia R. M. Silva ◽

Roberto G. Alves ◽

Luiz Eduardo R. Tavares ◽

...

Keyword(s):

Fish Farms ◽

Mato Grosso ◽

Mato Grosso Do Sul

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Hook selectivity of the pacu Piaractus mesopotamicus (Holmberg, 1887) in the Pantanal, the state of Mato Grosso do Sul, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842007000200021 ◽

2007 ◽

Vol 67 (2) ◽

pp. 339-345 ◽

Cited By ~ 6

Author(s):

J. Peixer ◽

M. Petrere Jr.

Keyword(s):

Maximum Sustainable Yield ◽

Recreational Fishing ◽

Sustainable Yield ◽

Mato Grosso ◽

Piaractus Mesopotamicus ◽

Total Length ◽

Kolmogorov Smirnov ◽

And Behavior ◽

Mato Grosso Do Sul ◽

Smirnov Test

The Pacu Piaractus mesopotamicus is the most captured fish species in the Pantanal, Mato Grosso do Sul State, and since 1994, its maximum sustainable yield had already been exceeded. Its capture is carried out only by hooks, as mesh gears are forbidden either for professional or for recreational fishing. The aim of this study was to determine selectivity for different hook sizes used in P. mesopotamicus fishing and to verify which sizes capture only adults. Data were collected in the rivers Miranda, Aquidauana, and Vermelho, in January, March, and April 2002. Six longlines with eight hook sizes were used and we adopted the hook opening as a measure related to selectivity. Different hooks captured individuals of the same length and their medians were similar, evidencing the great overlap among sizes. Regression results showed no significant relationship between ln[c2 (l)/c1 (l)] and total length of captured individuals. In addition, the Kolmogorov-Smirnov test also did not detect significant differences in the size of captured fish. Several hypotheses, such as the selectivity models, shape of selection curves, scarcity of large fishes, and behavior are used in order to explain the absence of hook selectivity for this species. Size of recruitment for this gear was 28 cm of total length, when individuals are still immature.

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Ecology of the parasitic endohelminth community of Piaractus mesopotamicus (Holmberg, 1887) (Characiformes) from Aquidauana and Miranda Rivers, Pantanal, state of Mato Grosso do Sul, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842009000100010 ◽

2009 ◽

Vol 69 (1) ◽

pp. 87-91 ◽

Cited By ~ 7

Author(s):

CM. Campos ◽

RM. Takemoto ◽

VE. Fonseca ◽

FR. Moraes

Keyword(s):

Significant Positive Correlation ◽

The State ◽

Mato Grosso ◽

Piaractus Mesopotamicus ◽

Positive Correlation ◽

Total Length ◽

Mato Grosso Do Sul

In this study the structure and diversity of the endohelminth community, as well as its interactions with 73 specimens of Piaractus mesopotamicus are described. The fish were caught in Aquidauana and Miranda rivers, both located in the Pantantal region, in the state of Mato Grosso do Sul. A total of 608,788 specimens of helminthes were found, representing five species: Dadaytrema oxycephala, Chabaudinema americanum, Spectatus spectatus, Rondonia rondoni and Echinorhynchus jucundum. D. oxycephala was more prevalent (91.78%) followed by R. rondoni (73.97%). Simpson's index indicated dominance in the endohelminth infracommunities (C = 0.396) and D. oxycephala was considered central species. A total of 54 hosts had between 2 and 3 species of helminthes. The pairs of the species R. rondoni/D. oxycephala and S. spectatus/D. oxycephala showed significant positive correlation between abundances. There was a significant positive correlation between total length and abundance of S. spectatus (rs = -0.2467 and p = 0.0353). Abundance of R. rondoni between the periods of 1/2003 and 2/2003 (p = 0.0356) and 1/2003 and 4/2004 (p = 0.0009) was significantly different. There was significant prevalence of E. jucundum in the female hosts.

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Parasitological assessment in hybrids Serrasalmidae fish farmed in Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612020084 ◽

2020 ◽

Vol 29 (4) ◽

Author(s):

Gabriela Tomas Jerônimo ◽

Arlene Sobrinho Ventura ◽

Santiago Benites de Pádua ◽

Edson Luniere Porto ◽

Liliane Campos Ferreira ◽

...

Keyword(s):

Parental Species ◽

Warm Season ◽

Cold Season ◽

Environment Interaction ◽

Ichthyophthirius Multifiliis ◽

Fish Farms ◽

Mato Grosso ◽

Lernaea Cyprinacea ◽

Host Parasite ◽

Mato Grosso Do Sul

Abstract This study evaluated the parasitic fauna of hybrids tambacu (Colossoma macropomum × Piaractus mesopotamicus) and patinga (P. mesopotamicus × Piaractus brachypomus) and their host-parasite-environment interaction during the warm and cold seasons in two fish farms located in the State of Mato Grosso do Sul, Brazil, South America. A total of 120 fish, being 60 fish for species (30 in the warm season and 30 in the cold season) were examined. Water quality was measured weekly to evaluate the interaction between environmental conditions and parasitism. Fifteen species of parasites were found: Ichthyophthirius multifiliis, Chilodonella hexasticha e Trichodina sp. (Protozoa), Henneguya piaractus, Myxobolus colossomatis and Myxobolus cuneus (Myxozoa); Anacanthorus penilabiatus, Mymarothecium boegeri, Mymarothecium viatorum, and Notozothecium janauachensis (Monogenoidea), Goezia spinulosa and Goezia sp. (Nematoda), Echinorhynchus jucundus (Acanthocephala), and Dolops carvalhoi, Lernaea cyprinacea (Crustacea). The ciliate protozoan I. multifiliis and monogenoids were the most prevalent parasites in the cold and warm seasons for both hybrids in the different culture systems intensive production and sportive fishing. It was observed that the serrasalmid hybrids are more susceptible to parasites and harbor high diversity of parasites in relation to the parental species C. macropomum, P. mesopotamicus and P. brachypomus, with a predominance of ectoparasites.

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Histopathology and molecular identification of Henneguya pseudoplatystoma

Latin American Journal of Aquatic Research ◽

10.3856/vol48-issue2-fulltext-2345 ◽

2020 ◽

Vol 48 (2) ◽

pp. 207-213

Author(s):

Romário Oliveira de Sales ◽

Juliana Rosa Carrijo Mauad ◽

Claucia Aparecida Honorato ◽

Kesia Esther Da Silva ◽

Jaqueline Verconti ◽

...

Keyword(s):

Gill Filament ◽

18S Rrna Gene ◽

Molecular Techniques ◽

Fish Parasites ◽

Rrna Gene ◽

Fish Farms ◽

Mato Grosso ◽

Close Relationship ◽

Reduction Of Mortality ◽

Mato Grosso Do Sul

The present study proposes to characterize the parasites isolated during the initial phase of production in fish farms located in Mato Grosso do Sul in the central-western region of Brazil, using histopathology analysis and molecular techniques. A total of 340 hybrid surubim fish (Pseudoplatystoma reticulatum × P. corruscans) from four farms were examined during the co-feeding phase. Histopathology analysis showed that 10.9% (n = 37) of the fish were infected with parasites. Branchitis, lifting epithelium, hypertrophy of epithelial cells, lamellar fusion, aneurisms and infection in the bone tissue of the gill filament was observed. The parasite species was determined by amplification of the 18S rRNA gene followed by sequencing. The phylogenetic analysis of nucleotide sequences indicates a close relationship (99.6%) with Henneguya pseudoplatystoma reported to be infecting the hybrid Pseudoplatystoma. This study demonstrates the occurrence of H. pseudoplatystoma in hybrid surubim (P. reticulatum × P. corruscans) during the co-feeding phase in fish farms in Mato Grosso do Sul. Also, molecular techniques provide a faster and sensitive method to identify fish parasites, and may assist in the development of new management techniques aimed at improving the sanitary conditions contributing to the reduction of mortality rates in these animals.

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TEORES DE COLESTEROL E LIPÍDIOS TOTAIS EM SEIS ESPÉCIES DE PEIXES CAPTURADOS NA REGIÃO PANTANEIRA DO ESTADO DE MATO GROSSO DO SUL

Boletim do Centro de Pesquisa de Processamento de Alimentos ◽

10.5380/cep.v20i1.1136 ◽

2002 ◽

Vol 20 (1) ◽

Author(s):

PRISCILA AIKO HIANE ◽

ADMAR FERREIRA LEAL FILHO ◽

MANOEL MENDES RAMOS FILHO ◽

MARIA ISABEL LIMA RAMOS

Keyword(s):

Cholesterol Concentration ◽

Muscular Tissue ◽

Total Lipids ◽

Mato Grosso ◽

Piaractus Mesopotamicus ◽

Lipid Source ◽

Cholesterol Levels ◽

Pygocentrus Nattereri ◽

Mato Grosso Do Sul

O objetivo deste trabalho foi determinar os teores de colesterol e lipídios totais na porção comestível (tecido muscular) de seis espécies de peixes capturados na região pantaneira do Estado de Mato Grosso do Sul. As espécies estudadas foram o pacu ( Piaractus mesopotamicus), a piranha ( Pygocentrus nattereri), o dourado ( Salminus maxillosus), a piraputanga ( Brycon orbigynanus), o piauçu ( Leporinus macrocephalus) e o pintado ( Pseudoplatystoma coruscans). Usou-se o método colorimétrico de BOHAC et al. para determinação do colesterol e o da extração com solvente orgânico e gravimetria para lipídios totais. Quanto aos teores de lipídios totais, os valores médios obtidos para as seis espécies de peixes estudadas enquadraram-se na faixa de 1,0 a 6,7 g/100 g de tecido muscular dos peixes, sendo a menor concentração apresentada pelo pintado e a maior pela piraputanga. A concentração de colesterol, em mg/100 g de tecido muscular (base úmida), foi mais alta para o dourado (107,4 mg/100 g) e mais baixa para o pintado (51,5 mg/100 g). CHOLESTEROL LEVELS AND TOTAL LIPIDS IN SIX SPECIES OF FISH CAPTURED IN PANTANAL REGION OF MATO GROSSO DO SUL STATE Abstract The objective of this work was to determine the cholesterol and total lipids content in the edible portion (muscular tissue) of six species of fish, captured in the Pantanal region of Mato Grosso do Sul State (Brazil). The studied species were the pacu ( Piaractus mesopotamicus), the piranha (Pygocentrus nattereri), the dourado ( Salminus maxillosus), the piraputanga ( Brycon orbigynanus), the piauçu ( Leporinus macrocephalus) and the pintado ( Pseudoplatystoma coruscans). The method for determination of cholesterol was the colorimetric of BOHAC et al. and for the total lipids was the extraction method with organic solvent and gravimetry. With relationship to the values of total lipids, the average content obtained for the six species of studied fish were in the range of 1,0 to 6,7 g/100 g of muscular tissue of the fish, and the pintado presented smaller concentration and the piraputanga was revealed as the largest lipid source. The cholesterol concentration, in mg/100 g of muscular tissue (raw base) was higher for the dourado (107,4 mg/100 g) and lower for the pintado (51,5 mg/100 g).

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