Contribuição ao estudo do gênero Platynosomum Looss, 1907: (Trematoda, Dicrocoeliidae)

Rodrigues, H. de Oliveira

doi:10.1590/s0074-02761963000300008

Cited by 16 publications

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“…in birds and mammals, Rodrigues (1963) performed a detailed morphological study of fluke specimens recovered from birds and reviewed all of the species of the genus known at that time. Significant morphological differences between Platynosomum illiciens (Braun, 1901) and Platynosomum fastosum Kossack, 1910 found in birds and mammals, respectively, were not observed, and the two species were synonymized (Rodrigues, 1963). The former species, described as Dicrocoelium illiciens from Brazilian birds (Braun, 1901), was included in the genus Platynosomum by Kossack (1910).…”

Section: Introductionmentioning

confidence: 99%

Can the same species of Platynosomum (Trematoda: Dicrocoeliidae) infect both mammalian and avian hosts?

2015

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The importance of platynosomiasis has increased in feline veterinary practice, but aspects related to the specificity of Platynosomum spp. in definitive hosts requires further study. Although morphological traits suggest that the same species, P. illiciens, may infect both birds and mammals, the synonymies previously proposed have not been widely accepted, likely because host specificity is assumed. In addition, the name P. fastosum has frequently been used for parasites recovered from mammals. In the present study, metacercariae (n= 100/animal) of P. illiciens recovered from lizards (Hemidactylus mabouia) in Brazil were fed to Australian parakeets (Melopsittacus undulatus) and mice. Two parasites were recovered from the liver of one M. undulatus specimen during a necropsy that was performed 105 days after infection, and all mice were found to be infected with 37 ± 12 (18-48) parasites. The morphology of the P. illiciens obtained from the parakeet was similar to that of parasites obtained from mice and those described previously from naturally infected birds and mammals. Non-specificity of P. illiciens in hosts is discussed briefly, based on the parasitological and morphological results obtained during the avian experimental platynosomiasis and the epidemiology and geographical distribution of this parasite.

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Section: Introductionmentioning

confidence: 99%

Can the same species of Platynosomum (Trematoda: Dicrocoeliidae) infect both mammalian and avian hosts?

2015

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“…Pinto et al (2016) also considered that the morphometric differences observed in these species of Platynosomum were insufficient for specific differentiation, and stated that P. illiciens is a species with wide geographic distribution and host range, parasitizing both birds and mammals. In carnivore mammals from Brazil, P. illiciens has been previously reported as a parasite of G. vittata in the state of Rio de Janeiro (TRAVASSOS, 1944;TRAVASSOS et al, 1969;VIEIRA et al, 2008), of P. yagouaroundi in the state of Pernambuco (BARBOSA & PONTUAL, 1949;RODRIGUES, 1963;VIEIRA et al, 2008). Therefore, the current study is the first report of P. illiciens parasitizing G. cuja.…”

Section: Discussionmentioning

confidence: 97%

“…This species was reported by Travassos (1944) and Yamaguti (1958) as an exclusive parasite of the liver of some bird species in Brazil. However, Rodrigues (1963) observed large polymorphs in P. semifuscum Looss, 1907, which is a parasite of European birds; in P. proxilliciens (Canavan, 1937), which is a parasite of Asian birds; in P. fastosum Kossack, 1910, which is a parasite of several species of mammals in Asia and North and South America; and in P. brauni (Freitas & Lent, 1937), which is a parasite of Brazilian birds. This author therefore considered all these species to be junior synonyms of P. illiciens.…”

Section: Discussionmentioning

confidence: 99%

“…The specimens of the genus Molineus Cameron, 1923 (Strongylida, Molineoidea) were identified according to the bursal rays distribution (ANDERSON et al, 2009) and by the specific morphological descriptions made by Travassos (1921Travassos ( , 1937. Trematodes were identified at generic level according to Bray et al (2008), and at specific level according to Rodrigues (1963). Acanthocephalans were identified according to Machado (1950) and Schmidt (1972).…”

Section: Methodsmentioning

confidence: 99%

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Helminth parasites of Galictis cuja (Carnivora, Mustelidae), from localities in the Atlantic forest of Brazil

Corrêa¹,

Bueno

Vieira³

et al. 2016

Rev. Bras. Parasitol. Vet.

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The current study aimed to investigate the helminth parasites of a population of Galictis cuja (Carnivora, Mustelidae) that occur in Atlantic Forest in the Southeastern region of Brazil. We necropsied 18 specimens of G. cuja, collected between January 2009 and May 2014, ran over victims on BR-040 highway, between the municipalities of Duque de Caxias, state of Rio de Janeiro and Juiz de Fora, state of Minas Gerais, localities inserted in Atlantic rainforest Biome. A total of six species of helminths were identified: Dioctophyme renale, Molineus elegans, Physaloptera sp., Strongyloides sp., Platynosomum illiciens, and Pachysentis gethi. Molineus elegans, Physaloptera sp. and P. illiciens were recorded for the first time in this host. Data provided in the current study when compared to the previous reports of parasitism by helminths in G. cuja in Brazil demonstrate that this study is the most representative with this host species.

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“…Platynosomiasis, a parasitic disease caused by dicrocoeliid trematodes of the genus Platynosomum, often results in lesions in the biliary tract and gallbladder of birds and mammals harboring the adult parasite (RODRIGUES, 1963;KAZACOS et al, 1980;FOLEY, 1994;FERREIRA et al, 1999;ANDRADE et al, 2012;BASU & CHARLES, 2014). In South America, the terrestrial mollusk Subulina octona and some isopods (Oniscidea species and Nagurus nanus) are the first and second intermediate hosts, respectively, of the fluke.…”

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confidence: 99%

Evaluation of Kato-Katz and spontaneous sedimentation methods for the diagnosis of platynosomiasis in Neotropical primates

Mati

Pinto

Melo

2015

Rev. Bras. Parasitol. Vet.

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Platynosomiasis is a parasitic infection reported in non-human primates, including marmosets, and is frequently difficult to diagnose. In this study, the Kato-Katz method and the spontaneous sedimentation method were evaluated for their usefulness in identifying Platynosomum eggs in fecal samples from Callithrix penicillata that naturally harbor Platynosomum illiciens. Spontaneous sedimentation allowed the diagnosis of 41.7% (5/12) and 66.7% (8/12) of infected marmosets from one and three slides, respectively, prepared from the same fecal sample. The examination of a single Kato-Katz thick smear detected 83.3% (10/12) of infection cases. The analysis of feces on three different days increased the rate of diagnosis, since 75% (9/12) and 100% (12/12) of the primates with platynosomiasis were identified using serial spontaneous sedimentation (3 slides/day) and the Kato-Katz method, respectively. The mean number of Platynosomum eggs per gram of feces determined via the Kato-Katz method was 71.7 (8-240). The spontaneous sedimentation method when performed in series is acceptable for the diagnosis of platynosomiasis. However, the Kato-Katz method, which was here used for the first time to detect this infection, has a higher diagnostic sensitivity and the advantage that a quantitative analysis of the eggs released in the host feces is possible.Keywords: Fecal parasitological diagnosis, platynosomiasis, Platynosomum, marmosets, spontaneous sedimentation, Kato-Katz thick smear. ResumoA platinossomose é uma infecção parasitária relatada em primatas não-humanos, inclusive saguis, cujo diagnóstico é frequentemente difícil. Neste estudo, os métodos de sedimentação espontânea e Kato-Katz foram avaliados quanto à sua utilidade na identificação de ovos de Platynosomum em amostras fecais de Callithrix penicillata naturalmente albergando Platynosomum illiciens. A sedimentação espontânea permitiu o diagnóstico de 41,7% (5/12) e 66,7% (8/12) dos saguis infectados a partir da análise de uma e três lâminas, respectivamente, preparadas de uma mesma amostra fecal. O exame de uma única lâmina de Kato-Katz detectou 83,3% (10/12) dos casos de infecção. A análise de fezes em três dias diferentes aumentou as taxas de diagnóstico, uma vez que 75% (9/12) e 100% (12/12) dos primatas que apresentaram a platinossomose foram identificados, usando-se a sedimentação espontânea (três lâminas/dia) e o Kato-Katz em série, respectivamente. O número médio de ovos de Platynosomum por g de fezes, determinado através do método de Kato-Katz, foi de 71,7 (8-240). O método de sedimentação espontânea, quando realizado em série, é aceitável para o diagnóstico da platinossomose. Entretanto, o método de Kato-Katz, o qual foi pela primeira vez usado para se detectar essa infecção, mostrou uma maior sensibilidade diagnóstica, com a vantagem de que é possível uma análise quantitativa dos ovos liberados nas fezes do hospedeiro.Palavras-chave: Diagnóstico parasitológico fecal, platinossomose, Platynosomum, saguis, sedimentação espontânea, Kato-Katz.

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Contribuição ao estudo do gênero Platynosomum Looss, 1907: (Trematoda, Dicrocoeliidae)

Cited by 16 publications

References 0 publications

Can the same species of Platynosomum (Trematoda: Dicrocoeliidae) infect both mammalian and avian hosts?

Can the same species of Platynosomum (Trematoda: Dicrocoeliidae) infect both mammalian and avian hosts?

Helminth parasites of Galictis cuja (Carnivora, Mustelidae), from localities in the Atlantic forest of Brazil

Evaluation of Kato-Katz and spontaneous sedimentation methods for the diagnosis of platynosomiasis in Neotropical primates

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