Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) in the greylag goose (Anser anser Linnaeus, 1758) in southeastern Brazil

Berto, Bruno Pereira; Teixeira, Marcel; Lopes, Carlos Wilson Gomes

doi:10.1590/s1984-29612007000300008

Cited by 8 publications

(7 citation statements)

References 3 publications

(2 reference statements)

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“…Moreover, studies have demonstrated variation in the size of Eimeria oocysts across their host range (Duszynski 1971;Parker and Duszynski 1986;Gardner and Duszynski 1990;Flausino et al 2014). In fact, polymorphism among oocysts has already been reported in different species (e.g., Gardner and Duszynski 1990;Berto et al 2008;Flausino et al 2014). This characteristic was also observed in the present study.…”

Section: Discussionmentioning

confidence: 91%

New species of Eimeria (Apicomplexa: Eimeriidae) from Thrichomys fosteri and Clyomys laticeps (Rodentia: Echimyidae) of the Brazilian Pantanal

et al. 2017

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The echimyid rodents Thrichomys fosteri and Clyomys laticeps are among the most commonly recorded small mammals in the Pantanal wetland of Brazil. These species play important ecological roles since they are the basis of the food chain of some predators and are parasitized by some pathogens. Knowledge of the eimerians that parasitize echimyid rodents in Brazil is absent, and only one report is available for South America. We therefore investigated parasitism by coccidians in the echimyids T. fosteri and C. laticeps in the Pantanal. Using morphological and morphometric features and associated statistical analyses, we describe five new eimerian species parasitizing T. fosteri (Eimeria nhecolandensis n. sp., Eimeria jansenae n. sp., and Eimeria fosteri n. sp.) and C. laticeps (E. nhecolandensis n. sp., Eimeria corumbaensis n. sp., and Eimeria laticeps n. sp.) in different types of infection associations. We document the developmental forms in the tissues, and describe lesions in the enteric tract of some infected animals. We also discuss some approaches regarding epidemiological and ecological data. Our results demonstrate that echimyid rodents in the Brazilian Pantanal are important hosts for the maintenance of enteric coccidia. Moreover, in some circumstances, this parasitism may threaten the health of the hosts.

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Section: Discussionmentioning

confidence: 91%

New species of Eimeria (Apicomplexa: Eimeriidae) from Thrichomys fosteri and Clyomys laticeps (Rodentia: Echimyidae) of the Brazilian Pantanal

et al. 2017

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“…Coccidial eggs (oocystes) have a very thick wall and can resist severe environmental stresses and disinfectants. Intestinal coccidiosis in geese and ducks was reported here in Iraq (and elsewhere throughout the world (6) renal coccidiosis was described all over the world (7)(8)(9) but does not yet report in Nineveh governorate. Renal coccidiosis has been reported in 10 members of the Order Anseriformes, two Procellariiformes, and one member in each of the Charadriiformes and Strigiformes (10).…”

Section: Introductionmentioning

confidence: 81%

Survey and diagnostic study of Eimeria truncata in geese and ducks

Al-Taee¹

2021

IJVS

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This trial was aimed to determine the prevalence of renal coccidiosis in domestic geese and ducks in Nineveh governorate, Iraq. One hundred and thirty birds of both sexes and different ages were randomly purchased from many localities of Nineveh governorate during the period between 2017 and 2018. According to geese and ducks' age, the overall infection was 70% and 51.66%, respectively, 74.35% for geese and 53.19% for ducks <6 months, 64.51% and 46.15% for ≤7 months. Sex distribution of renal coccidiosis showed that 75.55%, 54.05% of female geese and ducks, and 60%, 47.82% of male geese and ducks were positive, respectively. Impression smears from kidneys for the presence of Eimeria truncata in geese showed that 49 (70 %) were positive, while 31 (51.66%) were positive for ducks. Cloacal fecal samples for Eimeria truncata oocytes' were tested by flotation technique revealed that 22.85% were positive for geese and 16.66% for ducks. The dimensions of Eimeria truncata development stages (schizonts, macrogametes, microgametes, and oocytes) were measured. The histological sections of the infected geese and ducks' kidneys showed the different developmental stages of the Eimeria truncata parasite with various pathological changes.

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“…Three different genera of intestinal coccidia, Eimeria , Isospora and Tyzzeria , have been reported in Canada geese (Skene et al., 1981). In order to differentiate the three coccidian genera morphologically, oocysts need to be cultured with 2.0–2.5% potassium dichromate solution to facilitate sporulation (Berto et al., 2007; Greiner et al., 1981). Although one sample obtained in Oklahoma City, Oklahoma county contained coccidian oocysts with two sporocysts, a morphological characteristic of Isospora spp.…”

Section: Discussionmentioning

confidence: 99%

Survey of zoonotic parasites and bacteria in faeces of Canada geese (Branta canadensis) in North‐Central Oklahoma

Nagamori

Litherland

Koons

et al. 2022

Veterinary Medicine & Sci

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Background As a population of non‐migratory Canada geese (Branta canadensis) has been growing in residential and recreational areas, public concerns on potential acquisition of zoonotic pathogens from Canada geese and their faecal deposits have been increasing. Objectives The main study objective was to evaluate the prevalence of zoonotic microorganisms, Campylobacter spp., Cryptosporidium spp., Giardia spp. and Salmonella spp. and antimicrobial resistant Escherichia coli in faeces of Canada geese residing in North‐Central Oklahoma, United States. Methods A total of 204 faecal samples were collected from 11 locations in North‐Central Oklahoma, where public recreational areas such as lakes and ponds were located, and Canada geese were commonly inhabited. Faecal samples were examined by a centrifugal flotation to evaluate the prevalence of Cryptosporidium spp. and Giardia spp. infections. A total of 180 faecal samples were grouped into 36 pooled samples and cultured using standard culture methods to detect the prevalence of Campylobacter spp. and Salmonella spp. infections. The antimicrobial resistance profile was determined on 32 E. coli isolates recovered from the 36 sample pools, using the Kirby Bauer Disk Diffusion method. Results The targeted zoonotic pathogens were not identified by the faecal examinations performed. Of the 32 E. coli isolates, 17 isolates (53.1%) demonstrated resistance to ≥1 antimicrobial agent. Conclusions Targeted zoonotic pathogens were not detected among the examined resident Canada geese in North‐Central Oklahoma. The findings of multiple‐antimicrobial resistant E. coli infections are potentially a public health concern although the prevalence was low in this study. Further, larger scale surveys are recommended.

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Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) in the greylag goose (Anser anser Linnaeus, 1758) in southeastern Brazil

Cited by 8 publications

References 3 publications

New species of Eimeria (Apicomplexa: Eimeriidae) from Thrichomys fosteri and Clyomys laticeps (Rodentia: Echimyidae) of the Brazilian Pantanal

New species of Eimeria (Apicomplexa: Eimeriidae) from Thrichomys fosteri and Clyomys laticeps (Rodentia: Echimyidae) of the Brazilian Pantanal

Survey and diagnostic study of Eimeria truncata in geese and ducks

Survey of zoonotic parasites and bacteria in faeces of Canada geese (Branta canadensis) in North‐Central Oklahoma

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