On Dactylogyridae (Monogenea) of four species of characid fishes from Brazil

Cohen, Simone Chinicz; Kohn, Anna

doi:10.15560/5.2.351

Cited by 23 publications

(9 citation statements)

References 11 publications

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“…Mymarothecium viatorum has been described from P. brachypomus in the Oder River, Poland (BOEGER et al, 2002), and following was reported in this same host farmed in Brazil (COHEN & KOHN, 2005). For farmed P. brachypomus in northeastern Brazil, Cohen & Kohn (2009) registered occurrence of Anacanthorus penilabiatus and M. viatorum.…”

Section: Introductionmentioning

confidence: 77%

Communities of parasite metazoans in Piaractus brachypomus (Pisces, Serrasalmidae) in the lower Amazon River (Brazil)

Oliveira¹,

Tavares‐Dias

2016

Rev. Bras. Parasitol. Vet.

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The aim of this study was to investigate the component community of parasite metazoans of Piaractus brachypomus in the lower Amazon River, northern Brazil. From 34 necropsied fish, 27,384 metazoan parasites were collected, such as Anacanthorus spathulatus, Mymarothecium viatorum and Notozothecium janauachensis (Monogenoidea); Spectatus spectatus and Contracaecum sp (Nematoda); Clinostomum marginatum and Dadaytrema oxycephala (Digenea); and Argulus carteri and Ergasilus sp. (Crustacea). The dominant species was S. spectatus followed by monogenoidean species, and there was aggregated dispersion of parasites, except for D. oxycephala and Contracaecum sp., which presented random dispersion. Positive correlation among the abundance of the three monogenoideans species were found, thus indicating that there was no competition between the species of these parasites on the gills of hosts. The abundances of some parasite species showed positive correlations with the size of the hosts, but the condition factor of the fish was not affected by the parasitism levels. It showed that this host had a metazoan community characterized by high species richness of metazoans, low evenness and high diversity of parasites, with prevalence of endoparasites, including larval stages. This was the first record of C. marginatum, A. carteri, Ergasilus sp. and Contracaecum sp. for P. brachypomus.Keywords: Amazon, diversity, endoparasites, helminths, freshwater fish. ResumoO objetivo deste estudo foi investigar a comunidade componente de parasitos metazoários em Piaractus brachypomus no baixo Rio Amazonas, Norte do Brasil. Em 34 peixes necropsiados, 27.384 parasitos foram colhidos, tais como Anacanthorus spathulatus, Mymarothecium viatorum, Notozothecium janauachensis (Monogenoidea), Spectatus spectatus, larvas de Contracaecum sp. (Nematoda), Clinostomum marginatum, Dadaytrema oxycephala (Digenea), Argulus carteri e Ergasilus sp. (Crustacea). A dominância foi de S. spectatus, seguida por espécies de monogenoideas, e houve dispersão agregada dos parasitos, exceto D. oxycephala e Contracaecum sp., que apresentaram uma dispersão randômica. Foi encontrada correlação positiva entre a abundância das três espécies de monogenoideas, indicando que não houve uma competição entre as espécies desses parasitos nas brânquias. A abundância de algumas espécies de parasitos mostrou correlação positiva com o tamanho dos hospedeiros, e o fator de condição não foi afetado pelos níveis de parasitismo dos peixes. Mostrou-se que esse hospedeiro teve comunidade de metazoários, caracterizada por elevada riqueza de espécies, baixa uniformidade e elevada diversidade de parasitos com predominância de endoparasitos, inclusive em estágios larvais. Esse é o primeiro relato de C. marginatum, A. carteri, Ergasilus sp., e Contracaecum sp. para P. brachypomus Palavras-chave: Amazônia, diversidade, endoparasitos, helmintos, peixe de água doce.

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Section: Introductionmentioning

confidence: 77%

Communities of parasite metazoans in Piaractus brachypomus (Pisces, Serrasalmidae) in the lower Amazon River (Brazil)

Oliveira¹,

Tavares‐Dias

2016

Rev. Bras. Parasitol. Vet.

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“…Characidae is the fourth most diverse family of fishes and the most diverse among Neotropical fishes, with more than 1,000 species distributed from the southern USA to northern Patagonia (Argentina) in South America (Ornelas-García et al 2008;Mirande 2010). The dactylogyrid fauna of characids has been extensively studied in northern South America, especially in Brazil (Thatcher 2006;Cohen & Kohn 2009;Cohen et al 2013) and, in lesser extent, in Central America (Mendoza-Franco et al 2009). At present, the knowledge of monogenean parasitizing characids in the southern boundaries of the family distribution, represented by the Pampasic region in central Argentina, is scarce and fragmentary, in comparison with their northern counterparts.…”

Section: Introductionmentioning

confidence: 99%

Characithecium (Monogenoidea: Dactylogyridae) parasitic on the Neotropical fish Oligosarcus jenynsii (Teleostei: Characidae) from the Pampasic region, Argentina, with the emendation of the genus

Rossin

Timi

2014

Zootaxa

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Presently, only 2 species of dactylogyrid monogeneans have been reported Characidae inhabiting lakes and streams from the Pampasic region (central Argentina). During a parasitological survey on the characid Oligosarcus jenynsii, from Nahuel Rucá Lake (Buenos Aires province, Argentina), dactylogyrids were found on the gills. Specimens were identified as members of Characithecium: C. chascomusensis n. comb, C. longianchoratum n. sp., C. robustum n. sp., C. quadratum n. sp. and C. chelatum n. sp. These species can be distinguished from each other mainly by differences in the shape of the accessory piece of the male copulatory organ, morphology of anchors and ventral bars as well as position of vaginal aperture. The observation of some additional features present in all species studied, such as the vaginal aperture position (as midventral, lateroventral or lateromarginal) and the variability in the morphology of ventral bar (posteromedial projection present or absent) justified an emended diagnosis of Characithecium.

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“…In P. brachypomus, there was a predominance of M. viatorum, A. spathulatus and A. penilabiatus, which presented aggregated dispersion, a distribution pattern attributed to the strategy of reproduction of the parasites, as well as the heterogeneity of the immune system of hosts (Poulin 2013). Anacanthorus penilabiatus occurred only in two farms and at low infection levels, in contrast to what was reported for P. brachypomus farmed in the state of Ceará (Cohen and Kohn 2009). Only M. viatorum and A. spathulatus occurred in all four farms.…”

Section: Discussionmentioning

confidence: 59%

Parasites in farmed Piaractus brachypomus (Serrasalmidae) in the state of Acre, western Brazilian Amazonia

Negreiros

Tavares‐Dias

2019

Acta Amaz.

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This study investigated the parasite fauna in Piaractus brachypomus grown in fish farms in the state of Acre, in the western Brazilian Amazon. We examined 160 fish from four farms. Overall parasite prevalence was 66.9%. The fish were parasitized by Anacanthorus spathulatus, Mymarothecium viatorum, Anacanthorus penilabiatus, Clinostomum marginatum, Echinorhynchus jucundus and Henneguya sp., but monogenean species were the dominant parasites. Monogeneans showed an aggregated distribution pattern and there was a weak correlation between host size and abundance of M. viatorum and A. penilabiatus. No difference in the condition factor of parasitized and non-parasitized fish was detected. The fish of all farms had the gills parasitized by A. spathulatus and M. viatorum, but A. penilabiatus was found only in fish from two farms. Echinorhynchus jucundus, C. marginatum and Henneguya sp. were found in only one farm. The differences in parasitism level among the farms are attributable to differences in management and quality of cultivation environments.

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On Dactylogyridae (Monogenea) of four species of characid fishes from Brazil

Cited by 23 publications

References 11 publications

Communities of parasite metazoans in Piaractus brachypomus (Pisces, Serrasalmidae) in the lower Amazon River (Brazil)

Communities of parasite metazoans in Piaractus brachypomus (Pisces, Serrasalmidae) in the lower Amazon River (Brazil)

Characithecium (Monogenoidea: Dactylogyridae) parasitic on the Neotropical fish Oligosarcus jenynsii (Teleostei: Characidae) from the Pampasic region, Argentina, with the emendation of the genus

Parasites in farmed Piaractus brachypomus (Serrasalmidae) in the state of Acre, western Brazilian Amazonia

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