Biodiversity and distribution of helminths and protozoa in naturally infected horses from the biosphere reserve “La Sierra Madre de Chiapas”, México

Güiris, A.D.M.; Rojas, Herman; Berovides, A Vicente; Sosa, P.J.; Pérez, E.M.E.; Cruz, Amalia; Chávez, H.C.; Moguel, A.J.A.; Jiménez‐Coello, Matilde; Ortega‐Pacheco, Antonio

doi:10.1016/j.vetpar.2010.02.016

Cited by 15 publications

(10 citation statements)

References 24 publications

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“…The helminths found in this study are parasites that commonly affect horses, as reported in a study from Chiapas, Mexico, by Güiris and collaborators in a previous study [11] who identified the presence of 5 families from the phylum Nematoda and one family from the class Cestoda: Ascaridae, Kathlanidae, Oxyuridae, Strongylidae, Trichostrongylidae and Anoplocephalidae respectively, in naturally infected horses that had low medical supervision. We found more GIP species in addition to those described, such as Eimeria spp., Entamoeba spp.…”

Section: Discussionsupporting

confidence: 76%

Prevalence of Gastrointestinal Parasites in Horses of Central Mexico

Romero¹,

Heredia²,

Miranda³

et al. 2020

OJVM

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Equines are affected by a large number of endoparasites, these can cause gastrointestinal signs, respiratory, poor performance, slow growth and even cause sudden death. The presence of parasites can be associated with various factors related to the animal and environmental or geographical factors. The prevalence of gastrointestinal parasite infection and risk factors in horses were evaluated. Stool samples belonging to 218 horses from different regions of central Mexico were analyzed by coproparasitological concentration-flotation technique. The fecal examinations were carried out from February to August in 2017. Among the 218 samples that were examined, 103 (47.24%) were found to be positive with several gastrointestinal parasites, with Strongylus spp. being the most prevalent (23.85%) followed by Trichostrongylus spp. (21.56%) and Parascaris spp. (11.93%). Breed and place of origin were significantly associated with helminth infection. Sex was associated as a significant risk factor (p < 0.01) with the infection by Strongylus spp. on females and by Anoplocephala, on males. In central Mexico, gastrointestinal helminth infection appears to be relatively low.

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Section: Discussionsupporting

confidence: 76%

Prevalence of Gastrointestinal Parasites in Horses of Central Mexico

Romero¹,

Heredia²,

Miranda³

et al. 2020

OJVM

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“…It has been observed in chimpanzees that a positive correlation between intestinal parasites and commensal protozoa arose from complex interactions mediated by the host immune response and competition among taxa (McLennan et al, 2017 ). In horses, Güiris et al ( 2010 ) have shown that helminths cohabit with commensal protozoa in the gastrointestinal tract in natural conditions. In line with the seemingly symbiotic relationship between H. polygyrus and bacteria from the family Lactobacillaceae in mice (Reynolds et al, 2015 ), it could be speculated that strongyle and protozoa may contribute to each other's success in the ecological niche of the equine intestines.…”

Section: Discussionmentioning

confidence: 99%

Strongyle Infection and Gut Microbiota: Profiling of Resistant and Susceptible Horses Over a Grazing Season

et al. 2018

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Gastrointestinal strongyles are a major threat to horses' health and welfare. Given that strongyles inhabit the same niche as the gut microbiota, they may interact with each other. These beneficial or detrimental interactions are unknown in horses and could partly explain contrasted susceptibility to infection between individuals. To address these questions, an experimental pasture trial with 20 worm-free female Welsh ponies (10 susceptible (S) and 10 resistant (R) to parasite infection) was implemented for 5 months. Fecal egg counts (FEC), hematological and biochemical data, body weight and gut microbiological composition were studied in each individual after 0, 24, 43, 92 and 132 grazing days. R and S ponies displayed divergent immunological profiles and slight differences in microbiological composition under worm-free conditions. After exposure to natural infection, the predicted R ponies exhibited lower FEC after 92 and 132 grazing days, and maintained higher levels of circulating monocytes and eosinophils, while lymphocytosis persisted in S ponies. Although the overall gut microbiota diversity and structure remained similar during the parasite infection between the two groups, S ponies exhibited a reduction of bacteria such as Ruminococcus, Clostridium XIVa and members of the Lachnospiraceae family, which may have promoted a disruption of mucosal homeostasis at day 92. In line with this hypothesis, an increase in pathobionts such as Pseudomonas and Campylobacter together with changes in several predicted immunological pathways, including pathogen sensing, lipid metabolism, and activation of signal transduction that are critical for the regulation of immune system and energy homeostasis were observed in S relative to R ponies. Moreover, S ponies displayed an increase in protozoan concentrations at day 92, suggesting that strongyles and protozoa may contribute to each other's success in the equine intestines. It could also be that S individuals favor the increase of these carbohydrate-degrading microorganisms to enhance the supply of nutrients needed to fight strongyle infection. Overall, this study provides a foundation to better understand the mechanisms that underpin the relationship between equines and natural strongyle infection. The profiling of horse immune response and gut microbiota should contribute to the development of novel biomarkers for strongyle infection.

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“…Las moscas del género Gasterophilus, comprenden ocho especies en todo el mundo 35 , con reportes de prevalencias que varían entre el 3 y 94% 19,24,36 , sin embargo, las especies de Gasterophilus tienen diferente distribución en el mundo aunque solamente Gasterophilus intestinalis y Gasterophilus nasalis presentan distribución mundial 21,23,38,46 , es así como, sólo dos de estas especies (G. nasalis y G. intestinalis) han sido las reportadas en Argentina 11 y Chile 44 .…”

Section: Introductionunclassified

Ocurrencia de miasis cavitaria equina (Gasterophilus Spp) y su relación con las úlceras gástricas secundarias en la mucosa escamosa en Temuco, Chile

Cardona

Álvarez

Paredes

2016

Ces. Med. Vet. Zootec.

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Cardona JA et al. Ocurrencia de miasis cavitaria equina (Gasterophilus Spp) y su relación con las úlceras gástricas ¤ Para citar este artículo: Cardona JÁ, Álvarez A, Paredes E. Ocurrencia de miasis cavitaria equina (Gasterophilus Spp) y su relación con las úlceras gástricas secundarias en la mucosa escamosa en AbstractThe aim of this study was to determine the ocurrence of equine cavitary myiasis (Gasterophilus spp) in the CholChol slaughtering house in Temuco, Chile and its relation with the presentation of secondary gastric ulcers in the non-glandular squamous mucosa of the horses' (Equus caballus) stomachs. Of 240 stomachs evaluated post mortem, 145 were selected and characterized as positive to gasterophilosis (60.4%), of which 75 were males (20 stallions and 55 geldings) and 70 were mares, with ages ranging from 1 to 16 years. Every stomach was evaluated, characterized and photographed post mortem. Information about sex, age, location of the Gasterophilus larvae, presence and degree of ulceration of the squamous mucosa, were recorded in the respective forms and posteriorly digitalized. Global analysis of the location of larvae in the stomach of horses positive to gasterophilosis, established that 91.7% were located in the glandular mucosa, while 8.3% were located in the squamous mucosa. In the stomachs with presence of larvae in the antral/piloric regions of the glandular mucosa, 87.6% had secondary ulcers in the nonglandular squamous mucosa, due to the increase in the gastric fill line following alterations in gastric emptying, of which 69% were classified in categories 3 to 4 with a number of larvae higher tan 30, while 18.6% were found in categories 1 or 2 with less than 30 larvae per site. Regarding the location of larvae in the squamous mucosa, 8.3% of the stomachs showed primary mechanic ulcers, all classified between grades 1 and 2. Of all the animals evaluated, 62.1% had more tan 60 larvae, of which 60.1% had grade 3 or 4 secondary squamous ulcers, 15.9% had between 30 and 60 larvae per site, and 14.5% had less than 30 larvae per site. The study showed significant statistical dependence (p<0.05) between the number of larvae located in the glandular mucosa and the degree of severity of the secondary gastric ulcers in the squamous mucosa. Concluding, a high ocurrence of cavitary gastric myiasis was observed in slaughtering horses in the south of Chile, with squamous ulcers secondary to abnormal gastric emptying being the

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Biodiversity and distribution of helminths and protozoa in naturally infected horses from the biosphere reserve “La Sierra Madre de Chiapas”, México

Cited by 15 publications

References 24 publications

Prevalence of Gastrointestinal Parasites in Horses of Central Mexico

Prevalence of Gastrointestinal Parasites in Horses of Central Mexico

Strongyle Infection and Gut Microbiota: Profiling of Resistant and Susceptible Horses Over a Grazing Season

Ocurrencia de miasis cavitaria equina (Gasterophilus Spp) y su relación con las úlceras gástricas secundarias en la mucosa escamosa en Temuco, Chile

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