A new Trichuris species (Nematoda: Trichuridae) from capybaras: Morphological-molecular characterization and phylogenetic relationships

Eberhardt, Ayelen T.; Robles, María del Rosario; Monje, Lucas Daniel; Beldoménico, Pablo Martín; Callejón, Rocío

doi:10.1016/j.actatropica.2018.11.029

Cited by 12 publications

(15 citation statements)

References 44 publications

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“…Surprisingly, the capybara is the only rodent where molecular techniques have been used in the identification of Trichuris spp. Eberhardt et al [93] identified a new species of Trichuris from capybara using molecular characteristics and phylogenetic relationships. The new species was identified as Trichuris cutillasae, and this was found in the cecum of capybara in Argentina.…”

Section: Capybara (Hydrochoerus Hydrochaeris)mentioning

confidence: 99%

Trichuris spp. in Animals, with Specific Reference to Neo-Tropical Rodents

Jones

2021

Veterinary Sciences

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Trichuriasis is the clinical disease of animals infected with the parasite of the genus Trichuris. This review attempts to present information on Trichuris spp. infestation in neo-tropical rodents that are utilized for meat consumption by humans. Neo-tropical rodents utilized for meat production can be divided into two categories: those that have been domesticated, which include the guinea pig (Cavia porcellus), and those that are on the verge of domestication, such as the capybara (Hydrochoerus hydrochaeris), lappe (Cuniculus paca/Agouti paca), and agouti (Dasyprocta leporina). This document reviews the literature on the species of Trichuris that affects the rodents mentioned above, as well as the clinical signs observed. The literature obtained spans over sixty years, from 1951 to 2020. Trichuris spp. was found in these neo-tropical rodents mentioned. However, there is a dearth of information on the species of Trichuris that parasitize these animals. The capybara was the only rodent where some molecular techniques were used to identify a new species named T. cutillasae. In most cases, Trichuris spp. was found in combination with other endoparasites, and was found at a low prevalence in the lappe and guinea pig. The presence of Trichuris spp. ranged from 4.62–53.85% in the agouti, 4.21–10.00% in the lappe, 50% in the capybaras, and 1–31% in guinea pigs. Further work must be done towards molecular identification of various Trichuris spp. present in these rodents, as well as the clinical effect of infection on the performance of agouti, lappe, capybara, and guinea pigs.

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Section: Capybara (Hydrochoerus Hydrochaeris)mentioning

confidence: 99%

Trichuris spp. in Animals, with Specific Reference to Neo-Tropical Rodents

Jones

2021

Veterinary Sciences

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“…These characteristics are not reliable in all instances – many species have similar attributes with overlapping ranges of measurements ( Callejón et al, 2015, 2016 ; Vejl et al, 2017 ) and host preference may be more variable than previously thought ( Doležalová et al, 2015 ). Approximately 24 species been reported from rodents, many of which exhibit comparable morphological patterns ( Robles et al, 2014 ; Doležalová et al, 2015 ; Eberhardt et al, 2019 ).…”

mentioning

confidence: 99%

“…Nuclear data have provided higher support for relationships than mitochondrial data ( Doležalová et al, 2015 ). The nuclear ITS1-ITS2 genes offer markers that allow closely related species to be detected ( Eberhardt et al, 2019 ) and ITS1-5.8S-ITS2 has been used to show relations among ruminant- and rodent-infecting species ( Doležalová et al, 2015 ). However, the number of variants of RNA genes (including the ITS2 region) makes their utility in disentangling the phylogeny of Trichuris less opportune, particularly given that the amount of ploidy is unknown ( Doležalová et al, 2015 ).…”

mentioning

confidence: 99%

“…Trichuris fossor ( Hall, 1916) has been reported only from hosts belonging to the genus Thomomys ( Wied-Neuwied 1839) (Rodentia: Geomyidae) ( Todd and Lepp, 1972 ; Gardner, 1985 ; but see Falcón-Ordaz, 1993 ). Descriptions have been based on morphology and host preference and Trichuris from geomyid hosts have never been sequenced ( Eberhardt et al, 2019 ). The aim of this study was to serve as the first molecular report for T. fossor .…”

mentioning

confidence: 99%

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First report of molecular characterization and phylogeny of Trichuris fossor Hall, 1916 (Nematoda: Trichuridae)

Hughes

Duffield

Howe

et al. 2020

Journal of Nematology

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Because species of Trichuris are morphologically similar and ranges of host preference are variable, using molecular data to evaluate species delineations is essential for properly quantifying biodiversity of and relationships within Trichuridae. Trichuris fossor has been reported from Thomomys spp. (Rodentia: Geomyidae, 'pocket gophers') hosts based on morphological features alone. Partial 18S rRNA sequences for specimens identified as T. fossor based on morphology, along with sequences from 26 additional taxa, were used for a phylogenetic analysis. Evolutionary histories were constructed using maximum likelihood and Bayesian inference. In both analyses, the specimens fell within the Trichuris clade with 100% support and formed a distinct subclade with 100% support. These results confirm that T. fossor is a distinct species and represent the first molecular report for it. Relatedness among species within the family were well resolved in the BI tree. This study represents an initial effort to obtain a more comprehensive view of Trichuridae by including a new clade member, T. fossor. A better understanding of Trichuridae phylogeny could contribute to further characterization of host-associations, including species that infect livestock and humans.

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“…Other studies in Argentina found Fasciola hepatica, Echinocoleus hydrochoerid, and Taxorchis schistocotyle [77,78]. In 2019, a new species named Trichuris cutillasae was identified in the cecum of capybaras [79].…”

Section: Capybara (Hydrochoerus Hydrochaeris)mentioning

confidence: 96%

Endoparasites of Selected Native Non-Domesticated Mammals in the Neotropics (New World Tropics)

Jones

Lall

Garcia

2019

Veterinary Sciences

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In this review, information was summarized on endoparasites found in six non-domesticated neotropical animals. These mammals have the potential to be domesticated. The animals included three rodents, agouti (Dasyprocta leporina), lappe (Agouti paca), and capybara (Hydrochoerus hydrochaeris); a marsupial, manicou (Didelphis marsupialis insularis); and an artiodactyl, the collared peccary (Tayassu tajacu/Peccari tajacu) and a ruminant (the red brocket deer, Mazama americana). While there are many descriptions of the parasites present, the majority of publications failed to note the effect of them on the animals. Most information is available on endoparasites of capybara, while the endoparasites of the red brocket deer were the least reported. The manicou was reported to have had the most number of endoparasites, 44 species of parasites were reported, while there were only 24 endoparasites reported in the lappe. The most common parasites found in these neotropical animals were Paraspidodera uncinata, Strongyloides spp., Eimeria spp., Moniezia benedeni, Trichuris spp., Physocephalus spp., and Giardia spp. A large majority of the studies concluded that these animals were reservoirs for parasites that could affect domesticated livestock. Endoparasites of zoonotic significance were Echinoccocus spp., Trichuris spp., Giardia spp., and Cryptosporidium spp.

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A new Trichuris species (Nematoda: Trichuridae) from capybaras: Morphological-molecular characterization and phylogenetic relationships

Cited by 12 publications

References 44 publications

Trichuris spp. in Animals, with Specific Reference to Neo-Tropical Rodents

Trichuris spp. in Animals, with Specific Reference to Neo-Tropical Rodents

First report of molecular characterization and phylogeny of Trichuris fossor Hall, 1916 (Nematoda: Trichuridae)

Endoparasites of Selected Native Non-Domesticated Mammals in the Neotropics (New World Tropics)

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