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1
Interannual and seasonal variation in protozoan and metazoan parasite communities of Hemibrycon surinamensis, a characid fish inhabiting the Brazilian Amazon
100%
de Melo Hoshino E. , Tavares-Dias M.
Acta Parasitologica
|
2019
|
tom 64
|
nr 3
2
Ecology and seasonal variation of parasites in wild Aequidens tetramerus, a Cichlidae from the Amazon
80%
Tavares-Dias M. , Oliveira M. S. B. , Goncalves R. A. , Silva L. M. A.
Acta Parasitologica
|
2014
|
tom 59
|
nr 1
EN
This study is the first investigation on seasonal dynamics of parasites component community of the Aequidens tetramerus from an Amazon River tributary, in Northern Brazil. A total of 239,2407 parasites were recovered from 92 hosts examined from February to October 2011. Such parasites included Ichthyophthirius multifiliis, Tripartiella tetramerii and Trichodina nobilis (Protozoa), Dolops longicauda (Argulidae), Gussevia alioides, Gussevia disparoides (Monogenoidea), Digenea metacercarie, Pseudoproleptus larvae, Anisakidae larvae (Nematoda), Proteocephalidea plerocercoid (Eucestoda) and Gorytocephalus spectabilis (Acanthocephala). Ciliates were the most dominant and abundant taxon, while cestodes were the least prevalent. The parasites showed seasonal variation in their infection dynamics associated with environmental changes during the Amazonian drainage season, except the infection with I. multifiliis. The parasites community in A. tetramerus was also characterized by higher diversity, species richness and uniformity during the drainage season when compared to Amazon flood season. With the exception of T. tetramerii, these parasite species are new records for A. tetramerus.
3
Patterns of the parasite communities in a fish assemblage of a river in the Brazilian Amazon region
80%
Baia R. R. J. , Florentino A. C. , Silva L. M. A. , Tavares-Dias M.
Acta Parasitologica
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2018
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tom 63
|
nr 2
4
Content available An outbreak of Ichthyophthirius multifiliis (Ciliophora: Ichthyophthiriidae) in wild endemic fish fauna Steindachneridium parahybae (Siluriformes: Pimelodiae) in Brazil
80%
Correa L. L. , Ceccarelli P. S. , Tavares-Dias M.
Annals of Parasitology
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2019
|
tom 65
|
nr 4
EN
The ciliate Ichthyophthirius multifiliis is an important pathogen of freshwater fish that occurs in both temperate and tropical regions around the world. The purpose of present study was to report an outbreak of I. multifiliis in Steindachneridium parahybae from the Paraiba do Sul River in state of São Paulo (Brazil). The fins, tegument and gills of S. parahybae were examined for the presence of I. multifiliis, and blood parameters (Red Blood Cell, thrombocytes and leukocytes) were evaluated. All the examined fish (100%) were parasitized with I. multifiliis and the mean infection intensity was 15.5 parasites per fish. All the fish died 72 hours as a consequence of ichthyophthiriasis with alterations to the tegument coloration and open opercula. Red Blood Cell counts and hemoglobin concentration were low, indicating an anemic process.
5
Seasonal pattern in parasite infracommunities of Hoplerythrinus unitaeniatus and Hoplias malabaricus (Actinopterygii: Erythrinidae) from the Brazilian Amazon
80%
Goncalves R. A. , Oliveira M. S. B. , Neves L. R. , Tavares-Dias M.
Acta Parasitologica
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2016
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tom 61
|
nr 1
6
Content available Parasites community of Astronotus crassipinnis (Cichlidae), a fish from the Brazilian Amazon
80%
Santos G. G. , Oliveira M. S. B. , Neves L. R. , Tavares-Dias M.
Annals of Parasitology
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2018
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tom 64
|
nr 2
EN
We provide the first study on the diversity and community of parasites in Astronotus crassipinnis from the lower Amazon River, in Brazil. Of 35 hosts examined, 100% were infected with one or more species of parasites, such as Gussevia asota, Gussevia astronoti, Gussevia rogersi, Posthodiplostomum sp., Contracaecum sp., Gorytocephalus sp. and Dolops longicauda. Gussevia asota, G. astronoti and G. rogersi were dominant, and, in total, 9788 parasites were collected. The richness of parasite species (4.9±0.7), Brillouin diversity (0.46±0.28) and evenness (0.29±0.17) were low. Parasites had aggregated dispersion, parasitism did not affect the host condition factor, and host size did not influence abundance, species richness and parasite diversity. The parasitic fauna was characterized by the presence of few species of parasites with high prevalence and low abundance, specifically the endoparasites, besides dominance of ectoparasites. The presence of endoparasites indicates that the diet of A. crassipinnis consists mostly of mollusks and microcrustaceans. This fish species is an intermediate host for Posthodiplostomum sp., Contracaecum sp. and Gorytocephalus sp., parasites found in larval stage. Finally, the behavior and availability of infective stages, which are intermediate hosts for endoparasites, were factors structuring the communities of endoparasites.
7
Content available Monogenoidea parasites of Cichla monoculus and Cichla pinima (Osteichthyes: Cichlidae), sympatric fish in lower Tapajós River, Northern Brazil
80%
Oliveira M. S. B. , Adriano E. A. , Tavares-Dias M. , Correa L. L.
Annals of Parasitology
|
2019
|
tom 65
|
nr 4
EN
The study investigated the monogenoids infracommunity from the gills of Cichla monoculus and C. pinima living sympatrically in the lower Tapajós River, State of Pará (Brazil). A total of 561 monogenoids were collected of C. monoculus, which was host to seven species of these parasites, and 672 monogenoids were collected of C. pinima, which was host to eight species of these parasites. The monogenoids infracommunities of C. monoculus and C. pinima had a high qualitative similarity (88.0%), and quantitative (87%), and were composed by Gussevia arilla, G. longihaptor, G. tucunarense, G. undulata, Sciadicleithrum ergensi, S. umbilicum and S. uncinatum. There was a predominance of G. arilla and a low level of infection by Tucunarella cichlae. The prevalence, intensity and abundance of monogenoids were similar for C. monoculus and C. pinima, except for the intensity of G. undulata that was higher in C. monoculus. Parasite species displayed an aggregated dispersion, but G. longihaptor and S. ergensi exhibited random dispersion. This was the first study of monogenoids for C. pinima, and the first record of G. arilla, G. tucunarense, S. ergensi, S. umbilicum and S. uncinatum for C. monoculus. This study therefore extended the geographic distribution of these parasites to the lower Tapajós River in eastern Amazon.
8
Content available Spirocamallanus krameri and Contracaecum sp. thirdstage larvae (Nematoda) in Hoplerythrinus unitaeniatus (Erythrinidae) of eastern Amazon (Brazil)
80%
da Silva Pinheiro R. H. , Teixeira V. A. , Tavares-Dias M. , Giese E. G.
Annals of Parasitology
|
2021
|
tom 67
|
nr 2
9
Anthelminthic potential of the Ficus insipida latex on monogeneans of Colossoma macropomum (Serrasalmidae), a medicinal plant from the Amazon
80%
Gonzales A. P. P. F. , Santos G. G. , Tavares-Dias M.
Acta Parasitologica
|
2019
|
tom 64
|
nr 4
10
Dactylogyrids (Monogenea) parasitic on cichlids from Northern Brazil, with description of two new species of Sciadicleithrum and new host and geographical records
80%
Paschoal F. , Scholz T. , Tavares-Dias M. , Luque J. L.
Acta Parasitologica
|
2016
|
tom 61
|
nr 1
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