Permissiveness of two African wild rodents, Mastomys huberti and Arvicanthis niloticus, to Schistosoma intercalatum : epidemiological consequences

Imbert-Establet, D.; Moné, Hélène; Tchuenté, L. A. Tchuem; Jourdane, J.

doi:10.1007/s004360050299

Cited by 5 publications

(3 citation statements)

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“…However, these results differed from those demonstrated by Rodrigues-Silva (1988) for N. squamipes, where no significant difference among segments of the intestines were found. Yet, the studies by Imbert-Establet et al (1997), analyzing two African wild rodents infected with S. intercalatum, verified that eggs concentrate mainly in the small intestine of Mastomys huberti. As for Arvicanthis niloticus, eggs distribution changes with the development of the infection, when eggs start to concentrate in the large intestine.…”

Section: Discussionmentioning

confidence: 99%

Susceptibility of Nectomys rattus (Pelzen, 1883) to experimental infection with Schistosoma mansoni (Sambon, 1907): a potential reservoir in Brazil

Ribeiro

Maldonado

D’Andrea

et al. 1998

Mem. Inst. Oswaldo Cruz

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The aim of the present research was to evaluate the potential of Nectomys rattus, the "water rat", to develop Schistosoma mansoni infection. Comparison Key words: Nectomys rattus -Nectomys squamipes -wild rodent -Schistosoma mansoni -experimental infectionThe occurrence of wild populations of small rodent naturally infected in endemic schistosomiasis areas had been considered as an additional complication factor for the control of the disease (Rey 1993).The species Nectomys squamipes, the "water rat", is one of the most important non-human hosts for Schistosoma mansoni in Brazil (Antunes et al. 1973, Picot 1992. This species excretes viable eggs of the parasite during its hole life-span (RodriguesSilva 1988) and shows strong fitness to parasitism . Furthermore, N. squamipes has a high susceptibility to experimental infection (Souza et al. 1992), reinfection (Maldonado Jr. et al. 1994), and with a moderate pathogenic response (Silva & Andrade 1989 at the eastern Brazilian coast, from north of the municipality of São Lourenço da Mata (State of Pernambuco) to the Amazon river. That new given designation is N. rattus (2n=52).N. squamipes (2n=56) distribution has been restricted to the Atlantic coast of Brazil, in the basins of São Francisco river and Paraná river, as well as in the small independent basins of southern São Lourenço da Mata, in eastern Brazil.The broad distribution of N. rattus includes endemic areas of schistosomiasis apart from those where N. squamipes are found. However, there have been only two reports where N. rattus (formerly named N. squamipes amazonicus) were found naturally infected (Bastos et al. 1982(Bastos et al. , 1984.The aim of this research was to evaluate the potential of N. rattus to develop S. mansoni infection, and its ability to complete the parasite's life cycle under experimental conditions. All results were compared to the N. squamipes relation with S. mansoni infection. MATERIALS AND METHODSExperimental groups -Thirty seven specimens of N. rattus and 58 specimens of N. squamipes of both sexes, aged 3 to 5 months and weighing 250 to 300 g were used. All experimental animals were raised in our laboratory colonies (D'Andrea et al. 1996). The colony of the N. rattus derived from animals captured in the State of Goiás

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Section: Discussionmentioning

confidence: 99%

Susceptibility of Nectomys rattus (Pelzen, 1883) to experimental infection with Schistosoma mansoni (Sambon, 1907): a potential reservoir in Brazil

Ribeiro

Maldonado

D’Andrea

et al. 1998

Mem. Inst. Oswaldo Cruz

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“…The increase in the definitive host range can be interpreted as the result of hybrid vigor after hybridization of S. haematobium with species such as S. bovis which has a wide geographical distribution, as well as wide intermediate and definitive hosts ranges (Moné et al, 2000). Although no definitive natural host was found to be infected with S. guineensis, experimental infections were possible in both the cetartiodactyla Ovis aries (Frandsen et al, 1978) and the rodentia Mastomys huberti and Arvicanthis niloticus (Imbert-Establet et al, 1997). The same lack of investigation can be applied for S. mekongi (only two natural hosts found from two orders) and S. intercalatum (only one natural host found).…”

Section: Intermediate Hosts Reservoirsmentioning

confidence: 99%

Schistosoma spp.

Boissier¹,

Mouahid²,

Moné³

2019

Water and Sanitation for the 21st Century: Health and Microbiological Aspects of Excreta and Wastewater Management (Global Wate

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The designations employed and the presentation of material throughout this publication do not imply the expression of any opinion whatsoever on the part of UNESCO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The ideas and opinions expressed in this publication are those of the authors; they are not necessarily those of UNESCO and do not commit the Organization.

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“…An earlier single report of S. haematobium in a rodent has likewise since been considered erroneous (Pitchford, 1959b). Similarly, there is a paucity of information on infections with S. intercalatum in rodents; a single historical report exists of a natural infection of a rodent with S. intercalatum, despite sympatric species of rodents known to be experimentally susceptible (Imbert-Establet et al, 1997). Schistosoma mansoni, as mentioned above, is relatively commonly observed in African rodents, although usually at lower prevalence levels than seen in Latin American or Caribbean transmission settings (Hanelt et al, 2010).…”

Section: Schistosomiasis In African Rodentsmentioning

confidence: 99%