Aspects of the ecology of proteocephalid cestodes, parasites of Sorubim lima (Pimelodidae), of the upper Paraná River, Brazil: II. Interspecific associations and distribution of gastrintestinal parasites

Pavanelli, Gilberto Cezar; Takemoto, Ricardo Massato

doi:10.1590/s0034-71082000000400007

Cited by 11 publications

(13 citation statements)

References 16 publications

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“…This fact was also verified by Pavanelli and Takemoto (2000) while analyzing gastrointestinal distribution of parasites in the intestines of Sorubim lima, the most abundant species of cestode was distributed along the entire organ, while other species showed preference for certain regions. Esch et al (1990) reported that the parasite community may be influenced by the age and length of the host, changes in the diet, in the volume of food ingested, ontogenetic changes in the immuno-competence and also, changes in probability of contact with intermediate hosts.…”

Section: Discussionmentioning

confidence: 57%

Ecology of the parasitic endohelminth community of Pseudoplatystoma fasciatum (Linnaeus, 1776) (Siluriformes: Pimelodidae) from the Aquidauana River, Pantanal, State of Mato Grosso do Sul, Brazil

et al. 2009

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This study investigated the structure and diversity of the endohelminth community and its interactions with Pseudoplatystoma fasciatum, caught in the Aquidauana River, in the State of Mato Grosso do Sul, Brazil. Ten helminth species were represented in 1,228 specimens of parasites found in the intestine and mesentery of 33 specimens of P. fasciatum. Cestodes were observed in the intestine, while nematodes Cucullanus sp. in the mesentery. Contracaecum sp. Type 1, Spatulifer rugosa and Choanoscolex abscisus showed the highest mean intensity and mean abundance and Nomimoscolex sudobin showed the highest prevalence. Simpson's index indicated dominance in the endohelminth infracommunities (C = 1.0792) and Choanoscolex abscisus was considered the central species. A clumped pattern of dispersion according to Green's index was related. 69.69% of hosts analyzed had between 2 and 5 species of endohelminths. Mean diversity was H = 0.5517 (SD = 0.4209). Two pairs of species showed significant positive association and four pairs presented significant positive correlation among abundance data. Significant negative correlations between total length and prevalence and abundance of Peltydocotyle rugosa and Nomimoscolex sudobim were found. However, no significant correlation was observed between condition factor and abundance, as well as total length and diversity. There was significant prevalence of Harriscolex kaparari in male hosts. Keywords

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Section: Discussionmentioning

confidence: 57%

Ecology of the parasitic endohelminth community of Pseudoplatystoma fasciatum (Linnaeus, 1776) (Siluriformes: Pimelodidae) from the Aquidauana River, Pantanal, State of Mato Grosso do Sul, Brazil

et al. 2009

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“…Fish assemblages suffer drastically due to the impact of reservoirs, which leads to predominance of generalist fish species (FREEMAN et al, 2001), depletion of migratory species (BRITTO; CARVALHO, 2006) and transference of pathogens and parasites (GABRIELLI;ORSI, 2000). Considering the impact of reservoirs on fish abundance, the prevalence and size of fish parasite infracommunities may also be influenced (PAVANELLI; TAKEMOTO, 2000). The Taquari River is the second biggest tributary of the Jurumirim reservoir (HENRY;NOGUEIRA, 1999) and is one of the main tributaries of the Paranapanema River, which has been significantly affected by the creation of the reservoir.…”

Section: Introductionmentioning

confidence: 99%

Helminths of Steindachnerina insculptain two distinct stretches of the Taquari River, state of São Paulo, Brazil

Acosta

Queiroz

Brandão

et al. 2013

Rev. Bras. Parasitol. Vet.

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The purpose of this study was to evaluate the helminth fauna of Steindachnerina insculpta in the Taquari River, a tributary of the Jurumirim reservoir in the state of São Paulo, and to investigate whether some helminth species may act as a bioindicator of environmental impact. The host fish sample was composed of 60 specimens, with 30 individuals sampled in a lotic stretch and 30 in a lentic stretch. The following were found: the monogeneans Anacanthoroides mizelli, Diaphorocleidus kabatai, Urocleidoides sp. and Euryhaliotrema chaoi; the digenean Sphincterodiplostomum musculosum and unidentified metacercariae; the nematode Travnema travnema and unidentified larvae; and the acanthocephalan Gorytocephalus plecostomorum. The total prevalence of monogeneans (z = 3.14; p = 0.002) and A. mizelli (z = 3.879; p ≤ 0.001), as well as the mean abundance of total monogeneans (U = 642.0; p ≤ 0.001) and A. mizelli (U = 623.5; p ≤ 0.001), were higher in the lentic stretch. Steindachnerina insculpta and its monogeneans comprise a potential group that could be used to investigate environmental impact, as demonstrated in this study.Keywords: Neotropical fish, teleost, parasites, bioindicator, reservoir. ResumoO objetivo desde estudo foi avaliar a helmintofauna de Steindachnerina insculpta no rio Taquari, um tributário do reservatório de Jurumirim, estado de São Paulo, e verificar se alguma espécie pode agir como bioindicadora de impacto ambiental. A amostragem de peixes foi composta de 60 espécimes, com 30 indivíduos amostrados no trecho lótico e 30 no trecho lêntico. Foram encontrados os monogenóides: Anacanthoroides mizelli, Diaphorocleidus kabatai, Urocleidoides sp. e Euryhaliotrema chaoi; o digenético Sphincterodiplostomum musculosum e metacercárias não identificadas, o nematoide Travnema travnema e larvas não identificadas; e o acantocéfalo Gorytocephalus plecostomorum. A prevalência total de monogenóides (z = 3,14; p = 0,002) e A. mizelli (z = 3,879; p ≤ 0,001) e também a abundância média de monogenóides total (U = 642,0; p ≤ 0,001) e A. mizelli (U = 623,5; p ≤ 0,001) foram maiores no trecho lêntico. Steindachnerina insculpta e seus monogenóides compõem um grupo em potencial que pode ser usado para investigar impactos ambientais, como mostrado neste estudo.

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“…However situations of high parasitological indexes from fish infected by Proteocephalidae, in Mexico (Pérez-Ponce de León et al, 1995), Paraguay (de Chambrier and Vaucher, 1994;1999), and Slovákia (Hanzelová et al, 2001) have also been described. In Brazil, this group of parasites has been studied in several fish species from the Paraná River (Rego and Pavanelli, 1987;Pavanelli and Santos, 1990;de Chambrier and Rego, 1995;de Chambrier et al, 1999;2006;Rego et al, 1998;1999;Pavanelli and Takemoto, 2000;Machado et al, 2000;Rego, 2002;de Chambrier, 2003) and from the States of Pará, Mato Grosso, Espírito Santo and Amazonas (Rego and Pavanelli, 1990;de Chambrier and Rego, 1994;Vaucher, 1997, de Chambrier, 2001;2003;de Chambrier et al, 2004ab;de Chambrier and Scholz, 2005).…”

Section: Introductionmentioning

confidence: 99%

Proteocephalid cestode infection in alien fish, Cichla piquiti Kullander and Ferreira, 2006 (Osteichthyes: Cichlidae), from Volta Grande reservoir, Minas Gerais, Brazil

et al. 2009

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This work evaluates the variation of the parasitological indexes in 114 Cichla piquiti Kullander and Ferreira, 2006 (tucunaré) infected by two proteocephalid species (Cestoda) for the period of August 1999 to June 2001 in the Volta Grande reservoir, MG, Brazil. The relation between the parasitosis with rainfall and water quality (pH, electric conductivity, oxygen, chlorophyll, transparency and temperature) is discussed. Prevalence of Proteocephalus macrophallus (Diesing, 1850) and/or P. microscopicus (Woodland, 1935) Abiotic factors may favour the development of the species of the food chain that sustain the organisms in the diet of " tucunaré", but in this case, there was no correlation (P > 0.05) between the values of prevalence, mean intensity and mean abundance with the rainfall and water quality. At the same time, these organisms may constitute the intermediate hosts of cestodes. The time-course between the fish species development and the parasitosis manifestation in the definitive host can explain the lack of correlation between the parasitological indexes and abiotic factors. The predation on small fishes and cannibalism described for "tucunaré" might explain the high values of prevalence and intensity of infection. The results are also related to the exotic condition of the host in the reservoir.Keywords: Tucunare, alien fish, parasitism, Proteocephalidae, hydroelectric reservoir. Infecção por cestóides proteocefalídeos em peixe introduzido,Cichla piquiti (Osteichthyes: Cichlidae), no reservatório de Volta Grande, Minas Gerais, Brasil ResumoEste estudo avalia a variação nos índices parasitológicos de 114 espécimes de Cichla piquiti Kullander e Ferreira, 2006 (tucunaré) infectados por duas espécies de proteocefalídeos (Cestoda) entre agosto de 1999 e junho de 2001 no reservatório de Volta Grande, MG, Brasil. A relação entre a parasitose e os valores de pluviosidade e qualidade de água (pH, condutividade elétrica, oxigênio, clorofila, transparência e temperatura) é discutida. A prevalência de Proteocephalus macrophallus (Diesing, 1850) e/ou P. microscopicus (Woodland, 1935) foi 83,3%, intensidade média 110,8 e abundância média 100,7 durante todo o período. Prevalência de 100% foi observada em agosto e dezembro de 1999, abril e dezembro de 2000 e junho de 2001. As maiores intensidades médias foram 122,7 em outubro de 1999; 158,8 em dezembro de 1999; 96,4 em fevereiro de 2000; 400,7 em abril de 2000; 215,6 em outubro de 2000; e 136,4 em dezembro de 2000. Fatores abióticos podem favorecer o desenvolvimento de espécies que sustentam a alimentação do "tucunaré", mas, neste caso, não houve correlação (P > 0,05) entre os valores de prevalência, intensidade média e abundância média com a pluviosidade e qualidade de água no reservatório. Ao mesmo tempo, estes organismos podem constituir hospedeiros intermediários de cestóides. A relação entre o desenvolvimento da espécie hospedeira e Martins, ML. et al. 190 Braz. J. Biol., 69(1): [189][190][191][192][193][194][195] 2009 1993; Moravec, 2001). Scho...

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Aspects of the ecology of proteocephalid cestodes, parasites of Sorubim lima (Pimelodidae), of the upper Paraná River, Brazil: II. Interspecific associations and distribution of gastrintestinal parasites

Cited by 11 publications

References 16 publications

Ecology of the parasitic endohelminth community of Pseudoplatystoma fasciatum (Linnaeus, 1776) (Siluriformes: Pimelodidae) from the Aquidauana River, Pantanal, State of Mato Grosso do Sul, Brazil

Ecology of the parasitic endohelminth community of Pseudoplatystoma fasciatum (Linnaeus, 1776) (Siluriformes: Pimelodidae) from the Aquidauana River, Pantanal, State of Mato Grosso do Sul, Brazil

Helminths of Steindachnerina insculptain two distinct stretches of the Taquari River, state of São Paulo, Brazil

Proteocephalid cestode infection in alien fish, Cichla piquiti Kullander and Ferreira, 2006 (Osteichthyes: Cichlidae), from Volta Grande reservoir, Minas Gerais, Brazil

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