Wyniki wyszukiwania

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Is the community of fish gill parasites structured in a Neotropical floodplain?

100%

Bellay S., Takemoto R. M., Oliveira E. F.

Acta Parasitologica

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2012

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tom 57

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nr 1

Sixty-one specimens of the piranha Serrasalmus marginatus Valenciennes, 1837 were analyzed, aiming at assessing the community structure of their gill parasites. The samples were collected in lagoons of the Paraná, Ivinheima and Baia Subsystems within the Upper Paraná River Floodplain (Brazil). Host size and sex had little or no influence on the abundance and prevalence of parasites. The organization of the gill parasite infracommunities of S. marginatus was significantly non-random according to null models and ordination analyses. In general, parasite infrapopulations were not affected by interspecific associations or host characteristics (e.g. size, sex), what highlights the importance of local habitat characteristics to community organization of gill parasites of S. marginatus in the Upper Paraná River Floodplain.

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Two new species of Sciadicleithrum [Monogenea, Dactylogyridae] parasites of Neotropical cichlid fishes from the Parana River, Brazil

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Yamada F. H., Takemoto R. M., Bellay S., Pavanelli G. C.

Acta Parasitologica

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2009

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tom 54

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nr 1

6-11

Two new species of Sciadicleithrum are described from the gills of Neotropical cichlid fishes collected from Paraná River, Brazil. Sciadicleithrum satanopercae sp. nov. is described from the gills of Satanoperca pappaterra and differs from congeners by having a dorsal anchor with the distal portion complex and the inner margin with a “denticulum” between shaft and point. Sciadicleithrum joanae sp. nov. is described from the gills of Crenicichla niederleinii and C. britskii collected from Paraná River. Sciadicleithrum joanae sp. nov. differs from congeners by having a male copulatory organ comprising about half a clockwise loop and a vaginal pore “bulb-shaped”.

3

A new species of Demidospermus Suriano, 1983 [Monogenea, Dactylogyridae] parasitic on Loricariichthys platymetopon Isbrucker et Nijssen [Loricariidae, Siluriformes] from the Upper Parana River floodplain, Brazil

100%

Ferrari-Hoeinghaus A. P., Bellay S., Takemoto R. M., Pavanelli G. C.

Acta Parasitologica

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2010

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tom 55

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nr 1

16-19

Demidospermus paranaensis sp. nov. is described from the gills of Loricariichthys platymetopon Isbrücker et Nijssen (Loricariidae, Siluriformes) from the Upper Paraná River floodplain, Brazil. This new species differs from other members of Demidospermus in the following features: tegument with annulations throughout trunk and peduncle, eyes absent, longer male copulatory organ (MCO) with ovate base. Demidospermus paranaensis sp. nov. is similar to its congenerics by having tandem gonads, a counterclockwise-coiled MCO, non-articulated groove-like accessory piece serving as a MCO guide, sinistral vaginal aperture, and V-shaped haptoral bars.

Ograniczanie wyników

3 Acta Parasitologica

3 Bellay S.

3 Takemoto R. M.

2 Pavanelli G. C.

1 Ferrari-Hoeinghaus A. P.

1 Oliveira E. F.

1 Yamada F. H.

1 2012

1 2010

1 2009

Is the community of fish gill parasites structured in a Neotropical floodplain?

Two new species of Sciadicleithrum [Monogenea, Dactylogyridae] parasites of Neotropical cichlid fishes from the Parana River, Brazil

A new species of Demidospermus Suriano, 1983 [Monogenea, Dactylogyridae] parasitic on Loricariichthys platymetopon Isbrucker et Nijssen [Loricariidae, Siluriformes] from the Upper Parana River floodplain, Brazil