Allopatric combination of Fasciola hepatica and Lymnaea truncatula is more efficient than sympatric ones

Gasnier, N.; Rondelaud, D.; Abrous, M.; Carreras, Florence; Boulard, C.; Díez‐Baños, P.; Cabaret, Jacques

doi:10.1016/s0020-7519(00)00038-2

Cited by 51 publications

(43 citation statements)

References 22 publications

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“…This variable nature of results was also found in the Galba truncatulaFasciola hepatica system. If local adaptation between these partners was verified in the field (Abrous et al, 1999 and even during the larval development of F. hepatica within its snail host (Belfaiza et al, 2005), other experiments performed by our team have demonstrated that Spanish and Moroccan isolates of F. hepatica were more infective to French populations of G. truncatula than miracidial isolates originating from central France (Gasnier et al, 2000;Goumghar et al, 2001). An explanation to interpret this set of conflicting results may be the change which had occurred in the infectivity of F. hepatica miracidia from the 2000s.…”

Section: Introductionmentioning

confidence: 72%

Omphiscola glabra(Gastropoda, Lymnaeidae): Changes occurring in natural infections withFasciola hepaticaandParamphistomum daubneyiwhen this snail species is introduced into new areas

Dreyfuss

Vignoles

Rondelaud

2010

Ann. Limnol. - Int. J. Lim.

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-Cross-transplantations of Omphiscola glabra between two French departments (Haute-Vienne and Indre) were carried out to study snail settlement in these new sites during six years and to determine if this snail species was well adapted to its local parasites (Fasciola hepatica and Paramphistomum daubneyi). Local snails placed in new sites for each department were used as controls. In Indre furrows, the number of adults per population and the area of each habitat peaked on the third year post-introduction. Similar findings were also noted in the Haute-Vienne furrows occupied by local snails but peaks were only observed on the fourth year. In contrast, in Haute-Vienne sites populated by introduced snails, there was a progressive decrease in snail abundance and habitat area from the second year. The local O. glabra transplanted in HauteVienne kept their same degree de susceptibility to F. hepatica and P. daubneyi, thus demonstrating a good adaptation of these snails to their parasites. In other groups of transplanted snails, the first natural infections were only noted from the second or third year post-introduction and their prevalence progressively increased over time. Local adaptation of these latter snails to parasites would be more progressive in time and would stretch over several snail generations.

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Section: Introductionmentioning

confidence: 72%

Omphiscola glabra(Gastropoda, Lymnaeidae): Changes occurring in natural infections withFasciola hepaticaandParamphistomum daubneyiwhen this snail species is introduced into new areas

Dreyfuss

Vignoles

Rondelaud

2010

Ann. Limnol. - Int. J. Lim.

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“…According to these authors, the larval development of F. magna would be more intense in snails when infected with allopatric miracidia (the Czech Republic in this case). This assumption is based on the reports by Gasnier et al (2000) or by Goumghar et al (2001) for F. hepatica. According to these authors, experimental infections of G. truncatula with F. hepatica miracidia, originating from sympatric and allopatric conditions, differ in the intensity of infections and in the production of cercariae.…”

Section: Discussionmentioning

confidence: 99%

First studies on the susceptibility of Omphiscola glabra (Gastropoda: Lymnaeidae) from central France to Fascioloides magna

et al. 2005

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Experimental infections of Omphiscola glabra (preadult snails), originating from central France, to a Czech isolate of Fascioloides magna miracidia were carried out to determine if the local populations of O. glabra may ensure the larval development of this parasite and to compare these results with those noted for a natural snail host, Galba truncatula. The presence of experimentally infected snails was noted in the six populations of snails studied. However, only a few snails shed their cercariae (O. glabra 5.3 to 17.1%, G. truncatula 15.1% in the first population, and no shedding in the other). The shell heights of cercariae-shedding (CS) snails were significantly greater than those of other infected snails, for O. glabra as well as for G. truncatula. The number of metacercariae noted in each snail group was low and showed insignificant variations. When experimental infections of O. glabra were performed in relation to the shell height of snails (from 1 to 14 mm) at miracidial exposure, the prevalence of infected snails significantly decreased with increasing shell heights at exposure. However, the presence of CS snails was only noted from the 5-6 to the 9-10 mm groups, and the mean number of metacercariae per group ranged from 27 to 44.2. Despite the high infectivity of the Czech isolate of F. magna miracidia, there was an incomplete adaptation with the French G. truncatula and O. glabra used in this study, as the metacercarial production was low, and cercarial shedding only occurred for snails which showed a strong increase of their shell height during F. magna infections.

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“…The wide distribution of Fasciola sp., which runs from below sea level, as in the Caspian Sea area to up to 4.200m of altitude in the Paso del Condor, Venezuela, has to be with the large capacity of the parasite and its intermediate host in colonizing new areas (GASNIER et al, 2000). And as a typical anthropozoonose, domestic animals species, besides sheep and cattle, can also play an important role as reservoirs for human beings, especially pigs, horses and buffaloes, according to the place and the sanitary system (MAS-COMA; BARGUES, 1997).…”

Section: Zoonotic Diseasementioning

confidence: 99%

Fasciola hepatica: epidemiology, perspectives in the diagnostic and the use of geoprocessing systems for prevalence studies

et al. 2015

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Fasciola hepatica is a parasite that is located in the liver of ruminants with the possibility to infect horses, pigs and humans. The parasite belongs to the Trematoda class, and it is the agent causing the disease called fasciolosis. This disease occurs mainly in temperate regions where climate favors the development of the organism. These conditions must facilitate the development of the intermediate host, the snail of the genus Lymnaea. The infection in domestic animals can lead to decrease in production and control is made by using triclabendazole. Triclabendazole resistance in F. hepatica has been reported worldwide including in Brazil. Another concern is the increase number of human cases with the consumption of contaminated vegetables in regions where sanitation is inadequate together with the presence of infected animals and the absence of efficient control methods. The knowledge of the epidemiology of animal fasciolosis, including their occurrence, distribution and monitoring with techniques such as PCR and ELISA is reaching a new level with the usage of the Geographic Information System. The objective is to use new technologies for early fasciolosis diagnostic, as well as, to develop geoprocessing technics that could allow the determination of its prevalence and the evolution of clinical cases in animals before hand. This review paper provides an overview of F. hepatica, covering the aspects listed above, including original data. Key words: Fasciola hepatica, epidemiology, geographic information system, zoonosis ResumoFasciola hepatica é um parasita que se localiza no fígado de ruminantes, podendo infectar equinos, suínos e humanos. O parasito pertence à classe Trematoda, sendo o agente responsável pela doença denominada fasciolose, que ocorre principalmente em regiões temperadas, com clima favorável para o desenvolvimento do organismo. Tais condições devem auxiliar no desenvolvimento do hospedeiro intermediário, o molusco do gênero Lymnaea. Existe uma crescente preocupação quanto ao número de casos humanos diagnosticados em certas regiões cujo saneamento básico é inadequado, há presença de animais infectados e cultura em consumir hortaliças de áreas contaminadas cruas ou pouco cozidas. O parasitismo em animais domésticos pode levar a uma queda no desempenho animal e seu controle é realizado, principalmente, com o uso do triclabendazole. Entretanto, relatos quanto à resistência do patógeno à este produto vêm sendo descritos, inclusive no Brasil. O conhecimento da epidemiologia da fasciolose animal, incluindo sua ocorrência, distribuição e monitoramento com técnicas laboratoriais como o ELISA e a PCR, estão tendo um novo progresso com a utilização do Sistema de Informação Geográfica. O objetivo de utilizar essas novas tecnologias é diagnosticar a fasciolose mais precocemente, assim como, desenvolver técnicas de geoprocessamento que possam determinar a prevalência e a evolução dos casos em animais. Este artigo aborda recentes avanços no monitoramento da F. hepatica, cobrindo alguns aspectos lista...

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Allopatric combination of Fasciola hepatica and Lymnaea truncatula is more efficient than sympatric ones

Cited by 51 publications

References 22 publications

Omphiscola glabra(Gastropoda, Lymnaeidae): Changes occurring in natural infections withFasciola hepaticaandParamphistomum daubneyiwhen this snail species is introduced into new areas

Omphiscola glabra(Gastropoda, Lymnaeidae): Changes occurring in natural infections withFasciola hepaticaandParamphistomum daubneyiwhen this snail species is introduced into new areas

First studies on the susceptibility of Omphiscola glabra (Gastropoda: Lymnaeidae) from central France to Fascioloides magna

Fasciola hepatica: epidemiology, perspectives in the diagnostic and the use of geoprocessing systems for prevalence studies

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