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1

A new species of Colobomatus (Copepoda, Phylichthyidae) parasitic on Mullus argentinae (Perciformes, Mullidae) from South American Atlantic coast

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Pereira A. N., Timi J. T., Lanfranchi A. L., Luque J. L.
Acta Parasitologica
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2012
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tom 57
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nr 3
A new species of Colobomatus Hesse, 1873 is described from pores of the cephalic sensory system and nostrils of Argentine goatfish, Mullus argentinae Hubbs et Marini, 1933 (Perciformes: Mullidae), living along the southwestern Atlantic coast. The fish were collected at different latitudes, stretching from the State of Rio de Janeiro in the north, through Santa Catarina, Rio Grande do Sul (Brazil) to of Mar del Plata (Argentina) in the south. The prevalence of the infection ranged from 42% through 84%. The new species look alike to two other species, parasites of mullids (C. steenstrupi and C. mulli) particularly in the body shape and the number, shape, and ornamentation of cephalic, thoracic, and genital processes. The new species, however, can be readily distinguished by having the central cephalic process shorter than lateral ones, the later being bilobed at tip forked, and a relatively larger abdomen. Furthermore, C. steenstrupi possesses relatively wider trunk processes with rounded tips, a short abdominal dorsal process, and attains a larger size (up to 3.6 mm). C. mulli also differs by having all body processes with forked tips, and relatively shorter sixth thoracic somite and abdominal segments 1–3. This is the third record of a species of Colobomatus in South American Atlantic waters.
2

A new species of Dichelyne [Nematoda, Cucullanidae] parasitizing sciaenid fishes from off the South American Atlantic coast

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Timi J. T., Lanfranchi A. L., Tavares L. E. R., Luque J. L.
Acta Parasitologica
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2009
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tom 54
|
nr 1
45-52
A new nematode species Dichelyne (Cucullanellus) sciaenidicola sp. nov. is described based on specimens collected from the Whitemouth croaker Micropogonias furnieri (Desmarest) and the Argentine croaker Umbrina canosai Berg, from coastal waters of Argentina and Brazil. These nematodes were firstly identified as D. (C.) elongatus (Törnquist, 1931), a commonly reported species from M. furnieri in South American Atlantic waters. However, other species of Dichelyne have so far been reported from this host in the same area, namely D. (C.) rodriguesi (Pinto, Fábio et Noronha, 1970), D. (C.) amaruincai (Freitas, Vicente et Ibañez, 1969) and D. (Dichelyne) micropogonii Pereira et Costa, 1996. A careful re-examination of these parasites, as well as of type specimens of all species reported from M. furnieri, revealed that these nematodes represented a new species. The new species is distinguished from most of its congeners by having papillae 5–7 and 9 forming a subventral line close to cloaca, this feature is shared with other 6 species [D. (C.) dichelyneformis (Szidat, 1950), D. (C.) fraseri (Baylis, 1929), D. (C.) abbreviatus (Rudolphi, 1819), D. (C.) adriaticus (Törnquist, 1931), D. (C.) minutus (Rudolphi, 1819) and D. (C.) mariajuliae Alarcos, Timi, Etchegoin et Sardella, 2006)], which are readily distinguished by their body size, spicules length, distribution patterns of other papillae and position of the excretory pore and deirids. Also, D. (C.) elongatus from Umbrina canariensis (Valenciennes) from West Africa is established as a new species Dichelyne (Cucullanellus) yvonnecampanae sp. nov.; D. (C.) amaruincai from Pacific waters is considered as a valid species, D. (D.) micropogonii is regarded as species inquirendae and D. (C.) rodriguesi is identified as Cucullanus sp.
3

The mesoparasitic copepod Trifur tortuosus Wilson, 1917 [Pennellidae]: Redescription with notes on its congeners

100%
Etchegoin J. E., Lanfranchi A. L., Timi J. T.
Acta Parasitologica
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2009
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tom 54
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nr 1
57-63
The genus TrifurWilson, 1917 (Siphonostomatoida, Pennellidae) comprises relatively large and conspicuous parasitic copepods infecting the body surface and gills of several marine fishes. Variations in the gross morphology have been used to discriminate between the existing species of Trifur, however all previous descriptions of these species are brief, lacking many important characteristics, especially those of the head and trunk appendages, which usually were lost in the described specimens. In this paper, T. tortuosus is redescribed based on newly collected material from three species of fishes from Argentinean coasts. A detailed description of appendages morphology is given and the validity of T. merluccii Talice, 1936; T. puntaniger Thomé, 1963; T. physiculi Heegaard, 1962 and T. lotellae (Thomson, 1890) is herewith discussed.
4

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

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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.
5

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

100%
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.
6

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

100%
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.
7

New records of parasitic copepods (Crustacea, Copepoda) from marine fishes in the Argentinean Sea

76%
Cantatore D. M. P., Braicovich P. E., Alarcos A. J., Lanfranchi A. L., Rossin M. A., Vales D. G., Timi J. T.
Acta Parasitologica
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2012
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tom 57
|
nr 1
Increasing knowledge of the biodiversity of parasitic copepods in the Argentinean Sea will provide a baseline against which changes in the distribution of marine biota can be detected. We provide new information on the distribution of 13 known species of parasitic copepods gathered from 11 species of marine fishes from Argentinean Sea, including 7 new host records and 9 new locality records. These species are: Bomolochus globiceps (Vervoort et Ramírez, 1968) and Nothobomolochus cresseyi Timi et Sardella, 1997 (Bomolochidae Sumpf, 1871); Brasilochondria riograndensis Thatcher et Pereira, 2004 (Chondracanthidae Milne Edwards, 1840); Taeniacanthus lagocephali Pearse, 1952 (Taeniacanthidae Wilson, 1911); Caligus rogercresseyi Boxshall et Bravo, 2000 and Metacaligus uruguayensis (Thomsen, 1949) (Caligidae Burmeister, 1835); Hatschekia conifera Yamaguti, 1939 (Hatschekiidae Kabata, 1979); Clavellotis pagri (Krøyer, 1863), Clavella adunca (Strøm, 1762), Clavella bowmani Kabata, 1963 and Parabrachiella amphipacifica Ho, 1982 (Lernaeopodidae Milne Edwards, 1840), and Lernanthropus leidyi Wilson, 1922 and Lernanthropus caudatus Wilson, 1922 (Lernanthropidae Kabata, 1979). A list of host species lacking parasitic copepods, for which large samples were investigated by the authors, is also provided in order to compare in future surveys.
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