Redescription of Trichuris Pampeana (Nematoda: Trichuridae) From the South American Subterranean Rodent Ctenomys Talarum Thomas, 1898 (Rodentia: Octodontidae)

Rossin, María Alejandra; Malizia, Ana I.

doi:10.1645/ge-3383.1

Cited by 20 publications

(24 citation statements)

References 9 publications

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“…Os espécimes examinados por Pereira e Vaz (1933), Sutton (1976) e Rossin et al (2004) são maiores em relação aos espécimes examinados no presente estudo. A medida da distância da vulva em relação à região anterior (654,62) de P. uncinata foi menor do que registrado por Pinto et al (2002) (734,2).…”

Section: Discussionunclassified

“…Em relação às prevalências de P. uncinata, existem diferenças registradas na literatura, considerando o hospedeiro e tamanho amostral: Dittmar (2002) em C. aperea (n = 143) encontrou uma prevalência de 37%; Almeida (2004) em K. rupestris (n = 16) registrou prevalência de 31%; Krüger (2006) registrou em C. aperea (n = 33) prevalência de 76% (nos cecos) e 48% (no intestino grosso); Rossin et al (2004) …”

Section: Discussionunclassified

“…Na América do Sul, P. uncinata possui ampla distribuição, sendo registrada como endoparasita para as famílias Caviidae, Echimyidae Gray, 1825, Cuniculidae Miller & Gidley, 1918e Octodontidae Waterhouse, 1839no Peru (IBÁÑEZ, 1967DITTMAR, 2002), na Bolívia (LENT;FREITAS, 1939apud ROSSIN et al, 2004, na Argentina (PARONA, 1900;SUTTON, 1976;ROSSIN et al, 2004;ROBLES et al, 2012), no Brasil (TRAVASSOS, 1914;VAZ, 1933;LENT;FREITAS, 1939apud ROSSIN et al, 2004PINTO et al, 1982;VICENTE et al, 1982;RIBEIRO et al, 1985;ALMEIDA, 2004;KRÜGER, 2006;SIMÕES et al, 2010) e no Uruguai (KHALIL;VOGELSANG, 1931a;1931b;LENT;FREITAS, 1948).…”

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Paraspidodera uncinata (Nematoda, Lauroiinae) como parasita de Cavia magna e Cavia aperea (Rodentia, Caviidae) no Sul do Brasil

et al. 2015

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ResumoDas cinco espécies de preás registradas para o Brasil, quatro (Cavia fulgida, C. porcellus, C. aperea e C. magna) já foram registradas como hospedeiras de Paraspidodera uncinata. Os roedores C. magna e C. aperea são mamíferos pequenos, de hábitos terrestres, que ocorrem da região sul do Brasil ao leste do Uruguai. Preás coletadas e doadas foram necropsiados para análise de endoparasitos e os nematoides encontrados foram identiicados como P. uncinata. Os microhábitats dessa espécie foram os intestinos delgado e grosso em C. magna e o intestino grosso em C. aperea. As prevalências de P. uncinata nos diferentes hospedeiros foram 60% (C. magna; n = 5) e 14% (C. aperea; n = 7). O registro de P. uncinata em diferentes espécies de preás permite inferir que o modo de forrageio é semelhante nas diferentes localidades onde ocorrem no sul do Brasil, pois, possivelmente, a infecção dos hospedeiros ocorreu através da ingestão de vegetais com ovos de P. uncinata. Este trabalho contribui com o conhecimento sobre a helmintofauna de C. magna e C. aperea, no sul do Brasil. Palavras-chave:Helmintofauna; Nematoides; Preá; Região Neotropical; Taxonomia Abstract Paraspidodera uncinata (Nematoda, Lauroiinae) as parasite of Cavia magna and Cavia aperea (Rodentia, Caviidae) in southern Brazil. Out of the 5 species of Guinea pig registered for Brazil, 4 (Cavia fulgida, C. porcellus, C. aperea, and C. magna) have already been reported as hosts of Paraspidodera uncinata. The rodent species C. magna and C. aperea are small-sized mammals, with terrestrial habits, which occur from southern Brazil to eastern Uruguay. Guinea pig specimens donated for research were necropsied for the analysis of endoparasites, and the nematodes found were identiied as P. uncinata. The microhabitats of this species were the small and large intestines in C. magna and the large intestine in C. aperea. The prevalence of P. uncinata in the hosts was 60% in C. magna (n = 5) and 14% in C. aperea (n = 7). The record of P. uncinata in different Guinea pig species allows inferring that the foraging mode is similar in the different locations where they occur

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Section: Discussionunclassified

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Paraspidodera uncinata (Nematoda, Lauroiinae) como parasita de Cavia magna e Cavia aperea (Rodentia, Caviidae) no Sul do Brasil

et al. 2015

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“…Species of Paraspidodera exhibit a high specificity for octodontid rodents of the genus Ctenomys in which they are usually present in high densities. Paraspidodera uncinata occupies a wide geographic range (Table II), stretching from Peru to Mar de Cobo, south of Buenos Aires Province, which, at this time, is the southernmost extension of the species (Rossin et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Paleoparasitological Analysis of Rodent Coprolites in Holocenic Samples from Patagonia, Argentina

Sardella

Fugassa

2009

Journal of Parasitology

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The aim of the present study was to examine the parasite fauna present in rodent coprolites collected from Cerro Casa de Piedra (CCP7), located in Perito Moreno National Park (P.N.PM., 47 degrees 57'S and 72 degrees 05'W), Santa Cruz Province, Argentina. Eight coprolites obtained from the layer XIII of CCP7, with an antiquity considered as 7,920 +/- 130 yr B.P, were examined for parasites. Each coprolite was whole processed, rehydrated, homogenized, spontaneously sedimented, and examined using light microscopy. Eggs of parasites were measured and photographed. All the samples were parasitized by nematodes, with 267 eggs of Trichuris sp., 24 eggs of an aspidoderid, and 3 capillariid eggs. The rodent host was tentatively identified as a species of Ctenomys, the hypogeic rodents endemic to South America. The finding of Paraspidodera in Patagonian samples represents new evidence that strengthens the co-phylogenies between nematodes of this genus and Ctenomys and reinforces the value of parasites as tags in paleoparasitology.

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“…Available studies to date provide records for parasites of different lineages across the continent, and evidence of range contraction of some species of parasites. For example, the nematode Paraspidodera uncinata, is a common parasite of extant hystricognath rodents in Argentina, with the documented southernmost edge of their extant distribution located in the southern end of Buenos Aires province (Rossin et al 2004). Eggs of this species have been detected in coprolites from Patagonia, 1,480 km from the nearest known extant locality for this species (Sardella & Fugassa 2009a).…”

Section: Direct Evidence Of Parasites In Ancient Times: Eggs In Copromentioning

confidence: 99%

Nematodes Associated With Mammals in the Great American Biotic Interchange (Gabi)

Jiménez¹,

Notarnicola²,

Gardner³

2017

Oecol. Austr.

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The Great American Biotic Interchange (GABI) is a large-scale zoogeographic event that illustrates the exchange and diversification of mammals between North and South America. This phenomenon was accelerated by the connection of both landmasses during the Pliocene. Support for this phenomenon includes the extant distribution of xenarthrans, didelphiomorph marsupials, hystricognath and cricetine rodents, sciurids and carnivores, as well as the distribution of fossils in the stratigraphic record and the coalescence of genotypes. Contrasting with the relatively well-documented role and history of mammals in GABI, the role of their parasites has been largely neglected. As a consequence, the reconstructions of the causes of diversification, extinction and dispersion of groups of mammals during the Pliocene (and Miocene) invoke changes in climate patterns and the role of competitors or predators, yet in most cases the lines of evidence are not direct. We posit that infections with parasites offer a direct form of evidence of the role of interactions among species, by considering that the successful establishment of species of parasites in new groups of vertebrates will result in a net effect on their adaptive immune system. Thus, the current distribution of nematode parasites of the families Aspidoderidae, Nippostrongylidae, Onchocercidae, Oxyuridae, Rictaluriidae and Viannaidae offers evidence that the historical associations of these nematodes and their hosts diverge from the expected cospeciation and codivergence. Thus, clades of parasites infect disparate clades of mammals and, by deviating from the expected cospeciation, represent a paradox. This paradox deters investigators from studying historical associations among symbionts, since researchers lose the compelling simplicity of testing coevolutionary associations through the congruence of their resulting phylogenies. However, the reconstruction of historical associations must acknowledge the differential survival of parasites in novel hosts. This consideration is part of the Stockholm Paradigm, which includes the hypotheses known as Ecological Fitting, Oscillations, Taxon Pulses and Mosaics of Geographic Coevolution. We introduce nine host-parasite systems that provide insights on the role of parasites in GABI. We posit that the conservatism of parasite resource use, heritability of the adaptive immune system, and the genetic structure of parasites make it possible to elucidate the role of these parasites in GABI.

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Redescription of Trichuris Pampeana (Nematoda: Trichuridae) From the South American Subterranean Rodent Ctenomys Talarum Thomas, 1898 (Rodentia: Octodontidae)

Cited by 20 publications

References 9 publications

Paraspidodera uncinata (Nematoda, Lauroiinae) como parasita de Cavia magna e Cavia aperea (Rodentia, Caviidae) no Sul do Brasil

Paraspidodera uncinata (Nematoda, Lauroiinae) como parasita de Cavia magna e Cavia aperea (Rodentia, Caviidae) no Sul do Brasil

Paleoparasitological Analysis of Rodent Coprolites in Holocenic Samples from Patagonia, Argentina

Nematodes Associated With Mammals in the Great American Biotic Interchange (Gabi)

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