Impact of a Caged-Trout Farm on Parasites of Galaxias maculatus in Lake Moreno, Southern Argentina

Revenga, Jorge E.; Torres, Patricio; Baiz, Miguel

doi:10.1645/ge-441r

Cited by 14 publications

(11 citation statements)

References 3 publications

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“…The study was carried out at Lake Moreno, in the Nahuel Huapi National Park and Reserve (40° 08'-41º 35' S; 71° 02'-71º 57' W), Southern Argentine. A total of 477 G. maculatus were captured by using baited traps on January 2001 and processed in the laboratory by one of us 9 . One part of the information gathered from these fish was used for an other study 9 , and the rest was used for the present one.…”

Section: Methodsmentioning

confidence: 99%

Galaxias maculatus (Galaxiidae, Salmoniformes) infectados com Acanthostomoides apophalliformis (Digenea, Platyhelminthes) no Sul da Argentina: Histopatologia e ausência de mortalidade induzida

Revenga

Torres

Siegmund

2006

Braz. J. Vet. Res. Anim. Sci.

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Este estudo foi conduzido para analisar ao nível histopatológico, lesões produzidas por Acanthostomoides apophalliformis no peixe nativo Galaxias maculatus, e relacioná-las com os resultados do mortalidade induzida por parasitas na população dessa espécie, no lago Moreno, Parque Nacional Nahuel Huapi, Argentina. A ausência de inflamação na maioria das lesões, o fígado sem alterações em uma distância curta do foco das lesões e a aparência viável dos parasitas, sugerem uma boa relação parasita-hospedeiro. Esta hipótese é reforçada pelos dados que mostram a ausência de mortalidade induzida por A. apophalliformis na população dos peixes.

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Section: Methodsmentioning

confidence: 99%

Galaxias maculatus (Galaxiidae, Salmoniformes) infectados com Acanthostomoides apophalliformis (Digenea, Platyhelminthes) no Sul da Argentina: Histopatologia e ausência de mortalidade induzida

Revenga

Torres

Siegmund

2006

Braz. J. Vet. Res. Anim. Sci.

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“…It is noteworthy that despite the wide distribution of G. maculatus in the Southern Hemisphere, only two cestode species have been described from this fish, namely the triaenophorid A. mirabilis from Andean Patagonian lakes in Argentina, and the nippotaeniid Nippotaenia contorta Hine, 1977from New Zealand. Ortubay et al (1994, Rauque et al (2003) and Revenga et al (2005) assigned cestodes from G. platei and G. maculatus to the genus Nippotaenia, but such identifications were erroneous because the specimens corresponded to the triaenophorids G. toloi, described in a previous paper (Gil de Pertierra and Semenas 2005) for G. platei, and A. mirabilis described in the present paper for G. maculatus.…”

Section: Discussionmentioning

confidence: 64%

Ailinella mirabilis gen. n., sp. n. (Eucestoda: Pseudophyllidea) from Galaxias maculatus (Pisces: Galaxiidae) in the Andean-Patagonian region of Argentina

Pertierra¹,

Semenas²

2006

FOLIA PARASIT

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Ailinella gen. n. (Pseudophyllidea: Triaenophoridae) is proposed to accommodate Ailinella mirabilis sp. n. from Galaxias maculatus (Jenyns, 1842), a freshwater fish inhabiting the Andean lakes in Argentinean Patagonia. Ailinella belongs to the Triaenophoridae because it has a marginal genital pore, a follicular vitelline gland, and a ventral uterine pore. The new genus can be distinguished from other triaenophorids by the following combination of characters: a small body size, a low number of proglottides, which are longer than wide, a truncated pyramidal to globular scolex, a rectangular apical disc, presence of the neck, lack of internal longitudinal musculature separating the cortex from the medulla, testes distributed in one central field surrounding the ovary laterally and posteriorly, the vagina predominantly anterior to the cirrus sac, vitelline follicles circum-medullary, the genital pores post-equatorial, a saccate uterus, and operculate eggs. Blade-like spiniform microtriches were present on all tegument surfaces, and tumuli on all surfaces of the scolex and the anterior surface of the neck. Microtriches were characterized according to their size and density, and tumuli according to their size, inter-tumulus distance and density. Ailinella mirabilis is the first cestode described from G. maculatus and the second triaenophorid species recorded from a South American freshwater fish.

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“…Galaxias maculatus (Actinopterygii: Galaxiidae); amphidromous; intestine; adult; Moreno and Nahuel Huapi Lake systems (Andean-Patagonian region); Argentina (Ortubay et al 1994; Rauque et al 2003; Revenga et al 2005; Gil de Pertierra and Semenas 2006; Viozzi et al 2009; Fernández et al 2010). …”

Section: Parasite-host Listmentioning

confidence: 99%

“…Ortubay et al (1994), Rauque et al (2003) and Revenga et al (2005) misidentified the parasite as Nippotaenia sp. (Gil de Pertierra and Semanas 2006).…”

Section: Parasite-host Listmentioning

confidence: 99%

Annotated checklist of fish cestodes from South America

Alves¹,

Chambrier²,

Scholz³

et al. 2017

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An exhaustive literature search supplemented by a critical examination of records made it possible to present an annotated checklist of tapeworms (Cestoda) that, as adults or larvae (metacestodes), parasitize freshwater, brackish water and marine fishes, i.e. cartilaginous and bony fishes, in South America. The current knowledge of their species diversity, host associations and geographical distribution is reviewed. Taxonomic problems are discussed based on a critical evaluation of the literature and information on DNA sequences of individual taxa is provided to facilitate future taxonomic and phylogenetic studies. As expected, the current knowledge is quite uneven regarding the number of taxa and host-associations reported from the principal river basins and marine ecoregions. These differences may not only reflect the actual cestode richness but may also be due to the research effort that has been devoted to unravelling the diversity of these endoparasitic helminths in individual countries. A total of 297 valid species, 61 taxa identified to the generic level, in addition to unidentified cestodes, were recorded from 401 species of fish hosts. Among the recognized cestode orders, 13 have been recorded in South America, with the Onchoproteocephalidea displaying the highest species richness, representing c. 50% of all species diversity. The majority of records include teleost fish hosts (79%) that harbour larval and adult stages of cestodes, whereas stingrays (Myliobatiformes) exhibit the highest proportion of records (39%) among the elasmobranch hosts. Fish cestodes are ubiquitous in South America, being mostly recorded from the Warm Temperate Southeastern Pacific (WTSP; 31%) for marine hosts and the Amazon River basin (45%) for freshwater ones. The following problems were detected during the compilation of literary data: (i) unreliability of many records; (ii) poor taxonomic resolution, i.e. identification made only to the genus or even family level; (iii) doubtful host identification; Alves et al. / ZooKeys 650: 1-205 (2017) 2 and (iv) the absence of voucher specimens that would enable us to verify identification. It is thus strongly recommended to always deposit representative specimens in any type of studies, including faunal surveys and ecological studies. An analysis of the proportion of three basic types of studies, i.e. surveys, taxonomic and ecological papers, has shown a considerable increase of ecological studies over the last decade.

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Impact of a Caged-Trout Farm on Parasites of Galaxias maculatus in Lake Moreno, Southern Argentina

Cited by 14 publications

References 3 publications

Galaxias maculatus (Galaxiidae, Salmoniformes) infectados com Acanthostomoides apophalliformis (Digenea, Platyhelminthes) no Sul da Argentina: Histopatologia e ausência de mortalidade induzida

Galaxias maculatus (Galaxiidae, Salmoniformes) infectados com Acanthostomoides apophalliformis (Digenea, Platyhelminthes) no Sul da Argentina: Histopatologia e ausência de mortalidade induzida

Ailinella mirabilis gen. n., sp. n. (Eucestoda: Pseudophyllidea) from Galaxias maculatus (Pisces: Galaxiidae) in the Andean-Patagonian region of Argentina

Annotated checklist of fish cestodes from South America

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