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1

A new species of the genus Stephanoprora Odhner, 1902 [Digenea, Echinostomatidae] from Argentina

100%
Etchegoin J. A., Martorelli S. R.
Acta Parasitologica
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1997
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tom 42
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nr 2
Stephanoprora podicipei sp. n. parasite of great grebe Podiceps major Boddaert, 1785 (Aves, Podicipedidae) from Mar Chiquita coastal lagoon (Buenos Aires, Argentina) is described and illustrated. The new species presents common features with S. conciliata Dietz, 1909; S. manei Holcman-Spector et Olagüe, 1986; S. dogieli Holcman-Spector et Olagüe, 1989 and S. uruguayense Holcman-Spector et Olagüe, 1989. S. podicipei sp. n. can be clearly distinguished from these species, principally, by the smaller size of its body, peristomic disk, testes, ovary and by its shorter oesophagus and uterus. S. podicipei also differs from S. argentiniensis Sutton et al., 1982, the other species of this genus parasitizing Podiceps major in Argentina, in the number of spines of the peristomic disk (22 vs. 20), in its smaller body, peristomic disk and testes; in its larger acetabulum and eggs, in the shape of the testes and in its vitellaria extending to the middle of the anterior testis.
2

Redescription and new host records of Bomolochus globiceps [Vervoort et Ramirez, 1968] [Copepoda, Bomolochidae] from Argentina

100%
Timi J. T., Etchegoin J. A.
Acta Parasitologica
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1998
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tom 43
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nr 3
Bomolochus globiceps (Vervoort et Ramírez, 1968) (Copepoda, Bomolochidae), a parasite of the atheriniid fish Odonthestes smitti from the coast of Mar del Plata, Argentina, is redescribed and illustrated; details of the armature of appendages and differences from the original description are given, and a new host record, O. argentinensis, is reported for this species.
3

Can the studies at a spatial scale of 100s meters detect the spatio-temporal fluctuations of a parasite assemblage?

81%
Parietti M., Merlo M. J., Etchegoin J. A.
Acta Parasitologica
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2013
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tom 58
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nr 4
The importance of small-scale heterogeneity in local factors which overrides that of larger-scales factors, suggest that local factors play a major role in determining the richness and prevalence of larval digeneans in intertidal gastropods. The restricted distribution of the snail Heleobia australis along a 500 m transect in Cangrejo creek (Mar Chiquita, Argentina) provides a good opportunity to test the assumption that a study at spatial scale of 100s meters can detect spatiotemporal fluctuations of a larval digenean assemblage. To analyze that, 3600 specimens of H. australis were collected seasonally during the year 2011. A quantitative variation and a space-time interaction between sampling points and seasons of the year for the total prevalence of larval digeneans and snail’s densities were found, as well as a positive correlation with abiotic factors. These results revealed that the fluctuations in the community of larval digeneans of the snail H. australis can be detected at small spatial scale, using its natural distribution of 500 m. This study also highlights the importance of seasonality as a factor that must be considered in studies focused on the search for patterns structuring the communities of larval digeneans, at medium and large scales.
4

Population dynamic of two digenean species parasitizing the grass shrimp Palaemonetes argentinus Nobili 1901 (Decapoda: Palaemonidae) in a lentic environment from Argentina

81%
Parietti M., Merlo M. J., Etchegoin J. A.
Acta Parasitologica
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2015
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tom 60
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nr 1
5

Digenetic trematodes of the Brazilian flathead, Percophis brasiliensis Quoy et Gaimatd, 1825 [Percophidae, Perciformes], from Argentinean and Uruguayan waters

81%
Braicovich P. E., Etchegoin J. A., Timi J. T.
Acta Parasitologica
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2009
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tom 54
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nr 4
368-373
Based on the examination of 234 specimens of the Brazilian flathead, Percophis brasiliensis (Percophidae), caught in the Argentinean and Uruguayan Seas, the list of digenean species parasitizing P. brasiliensis is increased from 6 to 9, including the specific identification of two species previously reported at the generic level. The three news digenean records for P. brasiliensis are: Elytrophalloides oatesi, Parahemiurus merus and Aponurus laguncula, while that Ectenurus virgulus and Lecithocladium cristatum were identified to specific level. These reports showed the highest diversity of digeneans registered in fishes from the study region. The diversity of the digenean fauna of P. brasiliensis could be a consequence of the generalist food habits of this fish.
6

Redescription of Prosorhynchus australis Szidat, 1961 [Digenea, Bucephalidae] parasitizing Conger orbignianus Valenciennes, 1842 [Pisces, Congridae] from Argentina

81%
Etchegoin J. A., Timi J. T., Cremonte F., Lanfranchi A. L.
Acta Parasitologica
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2005
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tom 50
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nr 2
Prosorhynchus australis Szidat, 1961 is redescribed based on specimens collected from Conger orbignianus Valenciennes, 1842 caught in waters off Mar del Plata (38°08'S, 57°32'W), Argentina. Twenty one out of 32 congers examined were parasitized by P. australis (prevalence 65.62%, mean intensity 22.8, range 1-122). A number of morphological features not included in the original description justified the redescription of the species, and a detailed description of genitalia is provided for the first time. The diagnostic features used in the original description to define the species were corroborated, even after the range of measurements was broadened. Therefore P. australis is a valid species, despite not being considered in the recent literature regarding descriptions of new species in the genus.
7

Redescription of Neobrachiella spinicephala [Ringuelet, 1945] parasitic on Pinguipes brasilianus Cuvier, 1829 from Argentina, with the first description of the male

81%
Etchegoin J. A., Timi J. T., Lanfranchi A. L.
Acta Parasitologica
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2006
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tom 51
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nr 4
Neobrachiella spinicephala (Ringuelet, 1945) (Copepoda, Siphonostomatoida, Lernaeopodidae) is redescribed based on newly collected material from the Brazilian sandperch, Pinguipes brasilianus Cuvier, 1829, (the type host) from Mar del Plata, Argentina (the type locality). A description of the male is given for the first time. Although some differences were observed between the original description and the specimens examined in this study, these differences do not warrant a change in the taxonomic status of this species. Indeed, the generic status of the species is confirmed, especially based on characteristics of the male.
8

Blias marplatensis sp.nov. [Copepoda, Chondracanthidae] parasitizing Prionotus nudigula [Pisces, Triglidae] from Mar del Plata, Argentina

81%
Timi J. T., Etchegoin J. A., Lanfranchi A. L.
Acta Parasitologica
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2004
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tom 49
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nr 4
Blias marplatensis sp. nov. (Copepoda, Chondracanthidae) is described from adult specimens recovered from the red searobin Prionotus nudigula Ginsburg, 1950, from Mar del Plata, Argentina. Females of the new species differ from those of B. prionoti, the unique and type species of the genus, by the presence of processes and knobs in both head and trunk, the shape of branches of antenna, by relative size and setation of legs 1 and 2 and the shape of caudal rami. Males of the new species also differ from B. prionoti in the armature of accessory antenna and by having shorter and lobate legs with different setation.
9

Synhimantus [Synhimantus] laticeps [Rudolphi, 1819] Railliet, Henry et Sisoff, 1912 [Nematoda, Acuariidae] parasitic in Tyto alba [Gmelin] [Aves, Tytonidae] in Argentina

81%
Etchegoin J. A., Cremonte F., Navone G. T.
Acta Parasitologica
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2000
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tom 45
|
nr 2
During the parasitological examination of the barn owl Tyto alba (Gmelin), from Mar Chiquita coastal lagoon in Argentina, specimens belonging to Synhimantus (S.) laticeps (Rudolphi, 1819) Railliet, Henry et Sissof, 1912 were obtained. Comparison of measurements of present specimens with Cram and Smogorzhevskaya’s description of the same species, revealed several dissimilarities in the metrical features which cannot be considered great enough to create a new species. This new record of S. (S.) laticeps represents the first citation of this nematode from South America, and contributes to the knowledge of the morphology of this species, giving complete measurements and a detailed description of spicules. In addition, morphological and evolutionary considerations regarding fourth larval stages and subadults of S. (S.) laticeps, are also presented in this paper.
10

Redescription of Bacciger microacetabularis [Martorelli et Suriano, 1983] nov.comb. parasitizing Paralichthys orbignyanus [Pisces, Paralichthyidae] from Argentina

81%
Alarcos A. J., Etchegoin J. A., Cremonte F.
Acta Parasitologica
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2008
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tom 53
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nr 4
In this paper Steringotrema microacetabularis (Suriano et Martorelli, 1983) is redescribed and transferred to Bacciger Nicoll, 1924 in the Faustulidae Poche, 1926 based on newly collected material from the type-host, Paralichthys orbignyanus Valenciennes, 1839 and the type-locality, Mar Chiquita coastal lagoon, Buenos Aires Province, Argentina. A careful re-examination of the new specimens shows that some anatomical characteristics were ignored or incompletely described by the previous authors and they are included herein. The species is tentatively transferred to Bacciger with which it appears to have closest affinity. Despite the anatomical differences detailed in this paper, confirmation of this proposal must await further work, including molecular studies.
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