Novo tricostrongilídeo parasito de "Chauna torquata" (Oken) (Nematoda)

Freitas, J. F. Teixeira de; Mendonça, J. Machado de

doi:10.1590/s0074-02761949000100002

Cited by 3 publications

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“…The nematode P. pulchrum has been recorded previously in the gizzard of Chauna torquata Oken, 1816 (Anseriformes) from Brazil (FREITAS & MENDONÇA, 1949), and it has remained as the only record until present (see DURETTE-DESSET, 2009). Due to the migratory behavior of this swan (JOHNSGARD, 2010), it is plausible that this bird became parasitized in other countries, such as Brazil; however, one cannot discard that other local waterfowl could act as hosts in national territory as well.…”

Section: Discussionmentioning

confidence: 99%

“…All helminths were measured and photographed with the aid of the ScopeImage v9.0 software package (SudeLab 2009) and LAS EZ, which was associated with a light microscope (SudeLab) and stereomicroscope (LEICA EZ4HD), respectively. Helminths were identified following the descriptions of Travassos (1915), Seurat (1918), Cram (1927), Wetzel (1931), Freitas & Mendonça (1949), Beverley-Burton (1958), Pfeiffer (1960), Wakelin (1963), Stunkard (1967a, b), Travassos et al (1969), Bisset (1977), Boero et al (1972), McDonald (1981, Anderson et al (1989), Czaplinski & Vaucher (1994), Vicente et al (1995), Evans et al (1997), Flores & Brugni (2003), Jones et al (2005), Kostadinova (2005), Durette-Desset (2009), and Tamaru et al (2015). Parasitological descriptors, including prevalence (P), intensity (I), mean intensity ( M I), mean abundance ( M A), and range (R), were calculated and interpreted according to Bush et al (1997).…”

Section: Parasitological Examinationmentioning

confidence: 99%

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Gastrointestinal helminths and related histopathological lesions in black-necked swans Cygnus melancoryphus from the Carlos Anwandter Nature Sanctuary, Southern Chile

Oyarzún‐Ruiz

Muñoz

Paredes

et al. 2019

Rev. Bras. Parasitol. Vet.

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Black-necked swans are distributed across South America and face conservation problems in Chile according to data of the State institution SAG. The aim of this study was to identify helminths and to assess associated tissue damage via histopathology. A total of 19,291 parasites were isolated from 21 examined birds; 17 species were identified, including nematodes, flukes, and tapeworms. Of these, 12 were new host records, 13 were reported for the first time in Chile, and 5 were new records for the Neotropical region. Further, the flukes Schistosomatidae gen. sp. and Echinostoma echinatum are of zoonotic concern. Regarding histopathology, an inflammatory response was found along the birds’ entire digestive tract. Nevertheless, it is difficult to declare that there is a clear association between such lesions and isolated parasites, as other noxa could be responsible as well. Although in some cases there was an evident association, such inflammatory responses and necrosis were minimal, as occurred with Capillaria, Retinometra, Catatropis, Echinostoma, and Schistosomatidae gen. sp. Nevertheless, Epomidiostomum vogelsangi caused granulomatous injuries, an important inflammatory response, and necrosis, but it always circumscribed to superficial layers of the gizzard. Conversely, Paramonostomum was not associated with an inflammatory response despite a high parasitic load.

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Section: Discussionmentioning

confidence: 99%

Section: Parasitological Examinationmentioning

confidence: 99%

Gastrointestinal helminths and related histopathological lesions in black-necked swans Cygnus melancoryphus from the Carlos Anwandter Nature Sanctuary, Southern Chile

Oyarzún‐Ruiz

Muñoz

Paredes

et al. 2019

Rev. Bras. Parasitol. Vet.

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The geographical and evolutionary relationships of Australian trichostrongyloid parasites and their hosts

Inglis

1968

Journal of the Linnean Society of London, Zoology

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The trichostrongyloid nematode parasites of Australian vertebrates (other than rodents) are shown to form a fairly uniform morphological group with few relationships with groups outside Australia. In this they parallel their hosts but, as a consequence, can give no help in unravelling the relationships of those hosts. The trichostrongyloid parasites are all referred to the family Amidostomatidae which is reclassified thus: Amidostomatinae, with nine genera; Globocephaloidinae nov., with two genera; and Mackerrastrongylinae nov., with four genera. The following nematode species are described wholly or in part: Austrostrongylus thylogale; A. cameroni comb. nov.; Globocephaloides trifidospicularis; Hypodontus sp.; Mackerrastrongylus mawsoni sp. nov.; M. peramelis; M. waringi sp. nov.; Nicollina cathiae sp. nov.; and N. ridei sp. nov. A new genus, Patricialina, is proposed for Nicollina phascogalc Mawson, 1960a. Nicollina cameroni Thomas, 1959 is referred to Austrostrongylus and A. hydromyos Mawson, 1961 is referred to Nicollina. Asymmetricostrongylus Nagaty, 1932 is a synonym of Filarinema Mönnig, 1929 with F. moennigi Mawson, 1961 a synonym of F. australis (Wood, 1931) comb. nov.

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