Abstract:Helminth parasites are still not a well-known component of animal biodiversity. In this study, we describe and compare the endoparasite assemblages of three native rodent species from a semiarid Mediterranean ecosystem. A total of eight species of gastrointestinal helminth parasites were detected. The endoparasitic communities of the rodents Phyllotis darwini (5 species), Octodon degus (4 species), and Abrothrix olivaceus (3 species) were described in terms of their prevalence and mean abundance. In addition, … Show more
“…Syphacia sp. eggs (Figure 2e) exhibited smooth clear shell walls with dimensions that concur with morphological keys (Syphacia = 100-142 × 30-40 µm) (Thienpont et al, 2003;Zajac & Conboy, 2012), being slightly smaller than S. obvelata previously reported in Mus musculus in Chile (Landaeta-Aqueveque et al, 2007b), but similar to S. obvelata previously described in A. olivacea (Landaeta-Aqueveque et al, 2007a), and S. phyllotios in Phyllotis darwini (Quentin et al, 1979) and in A. olivacea (Yáñez-Meza et al, 2019). On post-mortem examination, Syphacia sp.…”
Section: Discussionsupporting
confidence: 82%
“…in G. valdivianus; and, Moniliformis sp. in A. manni taking into consideration that the latter rodent species was recently described (Ruiz del Río, 1939;Babero et al, 1975;Babero et al, 1976;Babero & Murua, 1987;Cattan et al, 1992;Landaeta-Aqueveque et al, 2007a, 2007bLandaeta-Aqueveque et al, 2014;Seguel et al, 2017;Digiani et al, 2017;Landaeta-Aqueveque et al, 2018;Yáñez-Meza et al, 2019;Riquelme et al, 2021;D'Elía et al, 2015). Overall, the prevalence of each parasite type eggs described in this study was higher than those detailed previously, with exception of Syphacia sp.…”
Section: Discussionsupporting
confidence: 46%
“…Overall, the prevalence of each parasite type eggs described in this study was higher than those detailed previously, with exception of Syphacia sp. in A. olivacea (i.e, 3.7% < Syphacia phyllotios = 13.6%) (Yáñez-Meza et al, 2019). Variations in parasite prevalence among studies may be related to different sample size, geographical features, season sampling, and diagnosis methods (Lyles & Dobson, 1993;Morand, 2015;Barelli et al, 2021).…”
Section: Discussionmentioning
confidence: 99%
“…In Chile, many endoparasites have been reported in native and introduced rodent species, in which parasite infection ranged from 0.5 to 88% (Alba & Jarpa, 1951;Olsen, 1966;Schenone et al, 1967;Babero et al, 1975;Babero et al, 1976;Babero & Murua, 1987;Landaeta-Aqueveque et al, 2014;Digiani et al, 2017;Seguel et al, 2017;Landaeta-Aqueveque et al, 2018;Yáñez-Meza et al, 2019;Riquelme et al, 2021). Although well-documented information is available about the taxonomy and ecological features of endoparasites in rodents mainly from Central Chile, little work has been done on gastrointestinal parasites and host determinants in rodents in southern Chile (Landaeta-Aqueveque et al, 2021).…”
Gastrointestinal parasites are well-documented in small mammals from north-central Chile, but little is known about endoparasites of rodents in southern Chile. A survey was conducted between January and February 2018 to evaluate gastrointestinal parasites and risk factors of wild rodents that live in rural areas in Northern Chiloé Island, Chile. A total of 174 fecal samples from rodents of six native and one introduced species were collected and examined using the Mini-FLOTAC method. Also, 41 individuals of four native wild rodent species were examined furtherly to determinate adult parasites from gastrointestinal tracts. The overall prevalence of endoparasites was 89.65% (156). Helminth egg types included: Rodentolepis spp., Capillariidae, Trichuris sp., Syphacia sp., oxyurid-type eggs, Strongyloides sp., Spirurid-type eggs, Strongilid-type eggs, Moniliformis sp., and an unidentified nematode egg and larvae. Protozoa comprised coccidia, amoeba, and unidentified cysts. From necropsies, adult parasites involved Syphacia sp. Trichuris sp., Protospirura sp. and Physaloptera sp. In Abrothrix olivacea, individuals with low-body-mass index exhibited reduced infection probability for Spirurid-type and Strongilid-type eggs. Some parasites in this study may affect human health. In rural settings where environmental conditions are changing, more research should be undertaken to understand parasitic infections in wildlife and implications for public health and conservation.
“…Syphacia sp. eggs (Figure 2e) exhibited smooth clear shell walls with dimensions that concur with morphological keys (Syphacia = 100-142 × 30-40 µm) (Thienpont et al, 2003;Zajac & Conboy, 2012), being slightly smaller than S. obvelata previously reported in Mus musculus in Chile (Landaeta-Aqueveque et al, 2007b), but similar to S. obvelata previously described in A. olivacea (Landaeta-Aqueveque et al, 2007a), and S. phyllotios in Phyllotis darwini (Quentin et al, 1979) and in A. olivacea (Yáñez-Meza et al, 2019). On post-mortem examination, Syphacia sp.…”
Section: Discussionsupporting
confidence: 82%
“…in G. valdivianus; and, Moniliformis sp. in A. manni taking into consideration that the latter rodent species was recently described (Ruiz del Río, 1939;Babero et al, 1975;Babero et al, 1976;Babero & Murua, 1987;Cattan et al, 1992;Landaeta-Aqueveque et al, 2007a, 2007bLandaeta-Aqueveque et al, 2014;Seguel et al, 2017;Digiani et al, 2017;Landaeta-Aqueveque et al, 2018;Yáñez-Meza et al, 2019;Riquelme et al, 2021;D'Elía et al, 2015). Overall, the prevalence of each parasite type eggs described in this study was higher than those detailed previously, with exception of Syphacia sp.…”
Section: Discussionsupporting
confidence: 46%
“…Overall, the prevalence of each parasite type eggs described in this study was higher than those detailed previously, with exception of Syphacia sp. in A. olivacea (i.e, 3.7% < Syphacia phyllotios = 13.6%) (Yáñez-Meza et al, 2019). Variations in parasite prevalence among studies may be related to different sample size, geographical features, season sampling, and diagnosis methods (Lyles & Dobson, 1993;Morand, 2015;Barelli et al, 2021).…”
Section: Discussionmentioning
confidence: 99%
“…In Chile, many endoparasites have been reported in native and introduced rodent species, in which parasite infection ranged from 0.5 to 88% (Alba & Jarpa, 1951;Olsen, 1966;Schenone et al, 1967;Babero et al, 1975;Babero et al, 1976;Babero & Murua, 1987;Landaeta-Aqueveque et al, 2014;Digiani et al, 2017;Seguel et al, 2017;Landaeta-Aqueveque et al, 2018;Yáñez-Meza et al, 2019;Riquelme et al, 2021). Although well-documented information is available about the taxonomy and ecological features of endoparasites in rodents mainly from Central Chile, little work has been done on gastrointestinal parasites and host determinants in rodents in southern Chile (Landaeta-Aqueveque et al, 2021).…”
Gastrointestinal parasites are well-documented in small mammals from north-central Chile, but little is known about endoparasites of rodents in southern Chile. A survey was conducted between January and February 2018 to evaluate gastrointestinal parasites and risk factors of wild rodents that live in rural areas in Northern Chiloé Island, Chile. A total of 174 fecal samples from rodents of six native and one introduced species were collected and examined using the Mini-FLOTAC method. Also, 41 individuals of four native wild rodent species were examined furtherly to determinate adult parasites from gastrointestinal tracts. The overall prevalence of endoparasites was 89.65% (156). Helminth egg types included: Rodentolepis spp., Capillariidae, Trichuris sp., Syphacia sp., oxyurid-type eggs, Strongyloides sp., Spirurid-type eggs, Strongilid-type eggs, Moniliformis sp., and an unidentified nematode egg and larvae. Protozoa comprised coccidia, amoeba, and unidentified cysts. From necropsies, adult parasites involved Syphacia sp. Trichuris sp., Protospirura sp. and Physaloptera sp. In Abrothrix olivacea, individuals with low-body-mass index exhibited reduced infection probability for Spirurid-type and Strongilid-type eggs. Some parasites in this study may affect human health. In rural settings where environmental conditions are changing, more research should be undertaken to understand parasitic infections in wildlife and implications for public health and conservation.
The broad-headed spiny rat, Clyomys laticeps, is an echimyid rodent found in open areas of Cerrado and Pantanal biomes in central Brazil and Paraguay. Little is known about the parasites associated with this semi-fossorial species, as no previous studies have been conducted on their helminth fauna. The aim of this study was to report the helminth community structure of C. laticeps inhabiting Serra de Caldas Novas State Park, a Cerrado area in central Brazil. Trappings were carried out in dry grasslands from January to October 2016, and the large and small intestines of 14 C. laticeps individuals were examined for the presence of helminths. Three nematode species were found: Fuellebornema almeidai, Pterygodermatites (Paucipectines) sp., and Subulura forcipata, and 85.7% of the studied species were infected with at least one of these helminths. F. almeidai was the most prevalent species among hosts, and S. forcipata was the most abundant. This study is the first report on helminth community structure in C. laticeps. We report a new host species and increase the known geographical range of F. almeidai, and provide the first record of Pterygodermatites (Paucipectines) sp. infecting echimyids. This is also the first report of S. forcipata in a mammal host.
Invasive populations are a threat to biodiversity, resulting in the loss of species, and also a threat to human health, participating in the reservoir of diseases. Rodents are among the most important invasive species worldwide. Chile is a country that features island conditions in terms of geography and has been widely invaded by allochthonous rodents. In this mini-review, we updated the literature on macro-parasites infecting both native and invasive rodents and of vector-borne pathogens in continental Chile in order to assess the relative importance of invasive rodents from both ecological and public health points of view. A total of 174 parasite species were found, with Siphonaptera representing the most diverse group. When examining how parasites are shared between native and introduced rodents, the analysis suggests that parasites circulate freely within recipient populations, and are not significantly transmitted from source populations. Further, generalist parasites are typically more prone to being shared between native and introduced rodents. Most zoonotic parasites were reported in invasive rodents, suggesting that these rodents must represent a public health concern. Although several vector-borne pathogens have been reported in rodents or ectoparasites, most of the recently emerging research has illustrated that there is a lack of evidence on rodent–vector-borne zoonoses in most pathogens.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.