Results 151 to 160 of about 718 (190)
Molecular Ecology, 2004 AbstractWe present here a spatial and temporal population genetic survey of a common freshwater snail, also a predominantly selfing species, Lymnaea truncatula. The rate of genetic diversity loss was quantified by estimating the effective size (Ne) of the snail populations, using two different methods. A temporal survey allowed estimation of a variance
Meunier, C +4 more
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Journal of Parasitology, 1984
showed a significantly greater number of larvae than the refractory genotype at days 5 and 8 (t = 4.536, P < 0.001 at 5 days; ROCK = 0 L3's at 8 days). Our results indicate that a susceptible mosquito genotype will maintain a higher infection (88%) and support a greater number of larvae (overall mean= 13.06) than a refractory genotype (44% susceptible;
Daniel Rondelaud
exaly +3 more sources
showed a significantly greater number of larvae than the refractory genotype at days 5 and 8 (t = 4.536, P < 0.001 at 5 days; ROCK = 0 L3's at 8 days). Our results indicate that a susceptible mosquito genotype will maintain a higher infection (88%) and support a greater number of larvae (overall mean= 13.06) than a refractory genotype (44% susceptible;
Daniel Rondelaud
exaly +3 more sources
Parasitology Research, 2002
Bimiracidial infections of French Lymnaea truncatula with a Madagascan isolate of Fasciola gigantica were carried out under laboratory conditions to study the growth of rediae and their larval productivity in relation to the different redial generations.
Y Dar, P Vignoles, D Rondelaud
exaly +3 more sources
Bimiracidial infections of French Lymnaea truncatula with a Madagascan isolate of Fasciola gigantica were carried out under laboratory conditions to study the growth of rediae and their larval productivity in relation to the different redial generations.
Y Dar, P Vignoles, D Rondelaud
exaly +3 more sources
International Journal for Parasitology, 2000
Parasites are capable of rapid evolutionary changes relative to their hosts, due to short life cycle, short generation time, and high fecundity. The direction of the evolution of parasite virulence can be studied in cross-transfer experiments, combining hosts and parasites from different localities, and comparing the outcome of established (sympatric ...
D Rondelaud, M Abrous, C Boulard
exaly +4 more sources
Parasites are capable of rapid evolutionary changes relative to their hosts, due to short life cycle, short generation time, and high fecundity. The direction of the evolution of parasite virulence can be studied in cross-transfer experiments, combining hosts and parasites from different localities, and comparing the outcome of established (sympatric ...
D Rondelaud, M Abrous, C Boulard
exaly +4 more sources
Intermediate snail hosts of French Fasciola hepatica: Lymnaea neotropica and Lymnaea viatrix are better hosts than local Galba truncatula [PDF]
Parasitology Research, 2012 International audienceAllopatric and sympatric infections of Lymnaea neotropica and Lymnaea viatrix var. ventricosa with Argentinean and French isolates of Fasciola hepatica were carried out to determine the capacity of these snails to produce ...
P Vignoles, D Rondelaud, G Dreyfuss
exaly +2 more sources
COPULATION AND OVIPOSITION IN LYMNAEA TRUNCATULA (MÜULLER) RESEARCH NOTE
Journal of Molluscan Studies, 1981exaly +2 more sources
Veterinary Parasitology, 2008 The intermediate host of Fasciola hepatica is Lymnaea truncatula in Switzerland. The snail and the free-living stages of the parasite require a moderate climate and moisture for survival, reproduction, and transmission.
Paul R Torgerson +2 more
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Soil type and the distribution of Lymnaea truncatula
Veterinary Record, 1984Habitat distribution of the snail Lymnea truncatula, the intermediate host of the liver fluke Fasciola hepatica, was related to a soil map in a part of Dyfed in South Wales. There was a close association with wet soils in general but, within these areas, habitats were concentrated in very wet localities of restricted size, such as ditches and seepages.
P S, Wright, P W, Swire
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Veterinary Research, 2002 A retrospective study was carried out over a 10- to 12-year period to analyse the changes in prevalences of natural fasciolosis and paramphistomosis among cattle and snails in central France, and to determine the causes which had induced these changes.
Daniel Rondelaud
exaly +2 more sources
Paramphistomum daubneyi : the development of redial generations in the snail Lymnaea truncatula
Parasitology Research, 1996Rediae of Paramphistomum daubneyi were counted and measured in Lymnaea truncatula to elucidate the variability in the numbers of free rediae and cercariae occurring between naturally infected snails and experimental single-miracidium infections. Experiments were performed using one miracidium per snail and snail raising was carried out at 20 degrees C.
M, Abrous, D, Rondelaud, G, Dreyfuss
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