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The discovery of acanthocephalans parasitizing chaetognaths

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Lozano-Cobo H., Gomez-Gutierrez J., Franco-Gordo C., Prado-Rosas M. C. G.

Acta Parasitologica

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2017

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tom 62

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nr 2

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First record of Corynosoma australe [Acanthocephala, Polymorphidae] parasitizing seahorse, Hippocampus sp. [Pisces, Syngnathidae] in Patagonia [Argentina]

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Braicovich P. E., Gonzalez R. A., Tanzola R. D.

Acta Parasitologica

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2005

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tom 50

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nr 2

The present study is the first record of acanthocephalan parasites in fish of the genus Hippocampus and of the order Syngnathiformes. It also provides the first reference to Corynosoma australe in fish from San Matías Gulf, Argentina. Parasites analyzed in the present study were morphologically similar to previous records in other marine fishes from Argentine Sea, however, they were comparatively more irregular in their dimensions with respect to previous records. Taking account information about seasonal presence, prevalence and mean intensity observed for C. australe in this study, it could be claimed that Patagonian seahorse plays an accidental role as paratenic host to this helminth. Potential paths of infection and dispersion of this parasite in the ecosystem of San Antonio Bay are discussed regarding the trophic relationships among crustaceans, fishes and marine mammals.

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The morphology of an unique population of Corynosoma strumosum (Acanthocephala, Polymorphidae) from the Caspian seal, Pusa caspica, in the land-locked Caspian Sea using SEM, with special notes on histopathology

67%

Amin O. M., Heckmann R. A., Halajian A., El-Naggar A. M.

Acta Parasitologica

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2011

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tom 56

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nr 4

Over 700 specimens of Corynosoma strumosum (Rudolphi, 1802) Lühe, 1904 were collected from one young male Caspian seal, Pusa caspica (Gmelin) in the southern land-locked Caspian Sea in April, 2009. Collected worms showed consistent variations from those reported by other observers using light microscopy especially in proboscis hook and trunk spine patterns. SEM images revealed many features that have not been previously reported including the shape and distribution of trunk spines, dorsoventral differences in proboscis hooks and their organization, the baldness of anterior proboscis, the rough egg topography, epidermal micropores, and variations in the female gonopore. This isolated population of C. strumosum from the land-locked Caspian Sea is distinguished from others reported from open waters elsewhere by the distribution of trunk spines, consistently smaller size of trunk and testes, larger eggs, and fewer proboscis hooks. Histopathological sections reveal the invasive path of worms in host tissue with damage to intestinal villi and worm encapsulation. Information obtained from SEM studies and histopathological sections is reported for the first time.

Ograniczanie wyników

3 Acta Parasitologica

1 Amin O. M.

1 Braicovich P. E.

1 El-Naggar A. M.

1 Franco-Gordo C.

1 Gomez-Gutierrez J.

1 Gonzalez R. A.

1 Halajian A.

1 Heckmann R. A.

1 Lozano-Cobo H.

1 Prado-Rosas M. C. G.

1 Tanzola R. D.

1 2017

1 2011

1 2005

The discovery of acanthocephalans parasitizing chaetognaths

First record of Corynosoma australe [Acanthocephala, Polymorphidae] parasitizing seahorse, Hippocampus sp. [Pisces, Syngnathidae] in Patagonia [Argentina]

The morphology of an unique population of Corynosoma strumosum (Acanthocephala, Polymorphidae) from the Caspian seal, Pusa caspica, in the land-locked Caspian Sea using SEM, with special notes on histopathology