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

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Abstract

Abstract 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.

Translated abstract

Resumo O presente estudo teve como objetivo investigar a fauna de helmintos de uma população de Galictis cuja (Carnivora, Mustelidae) que ocorre em uma região de Mata Atlântica na região Sudeste do Brasil. Foram necropsiados 18 espécimes de G. cuja, coletados entre Janeiro de 2009 e Maio de 2014, que foram mortos acidentalmente por atropelamentos na rodovia BR-040, entre os municípios de Duque de Caxias, no Estado do Rio de Janeiro e Juiz de Fora, no Estado de Minas Gerais, localidades inseridas no Bioma Mata Atlântica. No total seis espécies de helmintos foram identificadas: Dioctophyme renale, Molineus elegans, Physaloptera sp, Strongyloides sp, Platynosomum illiciens e Pachysentis gethi. Molineus elegans, Physaloptera sp. e P. illiciens foram registradas pela primeira vez nesta espécie de hospedeiro. O estudo amplia a diversidade de helmintos conhecidos para o hospedeiro em questão. Os dados fornecidos no presente estudo quando comparados com os registros prévios de helmintos em G. cuja no Brasil demonstram que este estudo é o mais representativo com esta espécie de hospedeiro.

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Classification of the acanthocephala.

O Amin (2013)

In 1985, Amin presented a new system for the classification of the Acanthocephala in Crompton and Nickol's (1985) book 'Biology of the Acanthocephala' and recognized the concepts of Meyer (1931, 1932, 1933) and Van Cleave (1936, 1941, 1947, 1948, 1949, 1951, 1952). This system became the standard for the taxonomy of this group and remains so to date. Many changes have taken place and many new genera and species, as well as higher taxa, have been described since. An updated version of the 1985 scheme incorporating new concepts in molecular taxonomy, gene sequencing and phylogenetic studies is presented. The hierarchy has undergone a total face lift with Amin's (1987) addition of a new class, Polyacanthocephala (and a new order and family) to remove inconsistencies in the class Palaeacanthocephala. Amin and Ha (2008) added a third order (and a new family) to the Palaeacanthocephala, Heteramorphida, which combines features from the palaeacanthocephalan families Polymorphidae and Heteracanthocephalidae. Other families and subfamilies have been added but some have been eliminated, e.g. the three subfamilies of Arythmacanthidae: Arhythmacanthinae Yamaguti, 1935; Neoacanthocephaloidinae Golvan, 1960; and Paracanthocephaloidinae Golvan, 1969. Amin (1985) listed 22 families, 122 genera and 903 species (4, 4 and 14 families; 13, 28 and 81 genera; 167, 167 and 569 species in Archiacanthocephala, Eoacanthocephala and Palaeacanthocephala, respectively). The number of taxa listed in the present treatment is 26 families (18% increase), 157 genera (29%), and 1298 species (44%) (4, 4 and 16; 18, 29 and 106; 189, 255 and 845, in the same order), which also includes 1 family, 1 genus and 4 species in the class Polyacanthocephala Amin, 1987, and 3 genera and 5 species in the fossil family Zhijinitidae.