<i>Paramphistomum daubneyi</i> sp.nov. from cattle and its snail host in the Kenya Highlands

Dinnik, J. A.

doi:10.1017/s0031182000024070

Cited by 47 publications

(61 citation statements)

References 2 publications

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“…In western Europe, the most frequent paramphistomid species affecting cattle seems to be P. daubneyi [10,19]. However, since the first description of the parasite only dates back to 1962 [9], the distribution of this last paramphistomid in the world is still imprecise (in some countries of Europe and eastern Africa) and the list of the definitive hosts is limited to several species of ruminants [18,19].…”

Section: Introductionmentioning

confidence: 99%

Fasciola hepatica and Paramphistomum daubneyi: changes in prevalences of natural infections in cattle and in Lymnaea truncatula from central France over the past 12 years

Mage

Bourgne²,

Toullieu³

et al. 2002

Vet. Res.

141

100

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-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. The prevalences of natural fasciolosis in cattle increased from 1990 to 1993 (13.6% to 25.2%) and diminished afterwards up to 1999 (at 12.6%). Those of natural paramphistomosis showed a progressive increase between 1990 and 1999 (from 5.2 to 44.7%). The prevalences of natural infections and the numbers of free rediae counted in the snails (Lymnaea truncatula) infected with F. hepatica did not show any significant variations over time. By contrast, the prevalences of natural paramphistomosis in snails significantly increased from 1989 to 1996 and remained afterwards in the same range of values (3.7-5.3%), while the number of free rediae significantly increased up to 2000 (from a mean of 6.5 to 13.8 rediae per infected snail, respectively). Three hypotheses may explain the increase of paramphistomosis in cattle and snails: a better quality of diagnosis for the detection of P. daubneyi eggs in veterinary analysis laboratories, the use of specific molecules in the treatment of cattle fasciolosis since 1993, and the lack of an effective treatment up to now against cattle paramphistomosis. Since the objective of most farmers in central France is to obtain the highest antiparasitic efficiency with a single treatment of cattle per year, it is reasonable to assume that the prevalence of bovine paramphistomosis will continue to increase in the future. Résumé -Fasciola hepatica et Paramphistomum daubneyi : changements dans les prévalences des infestations naturelles chez les bovins et chez Lymnaea truncatula dans le centre de la France au cours des 12 dernières années. Une étude rétrospective a été réalisée sur une période de 10 à 12 années pour analyser les modifications qui se sont produites dans les prévalences de la fasciolose et de la paramphistomose naturelles chez les bovins et les limnées du centre de la France, et pour déterminer les causes qui ont provoqué ces changements. Chez les bovins, la prévalence de la fasciolose naturelle s'est accrue entre 1990 et 1993 (de 13,6 à 25,2 %) avant de diminuer par la suite jusqu'en 1999 (à 12,6 %). Celle de la paramphistomose naturelle a augmenté de manière progressive entre 1990 et 1999 (de 5,2 à 44,7 %). La prévalence de l'infestation naturelle avec F. hepatica et le nombre de rédies libres chez Lymnaea truncatula n'ont pas montré de variations significatives dans le temps. Par contre, la prévalence de l'infestation naturelle avec Paramphistomum daubneyi chez les limnées a présenté une augmentation significative entre 1989 et 1996 avant de rester ensuite dans la même gamme de valeurs (3,7-5,3 %), tandis que le nombre de rédies libres a augmenté jusqu'en 2000 (de 6,5 à 13,8 rédies en moyenne par mollusque infesté). Trois hypothèses peuvent expliquer cet accroissement de la paramphistomose chez les bovins et les mollus...

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Section: Introductionmentioning

confidence: 99%

Fasciola hepatica and Paramphistomum daubneyi: changes in prevalences of natural infections in cattle and in Lymnaea truncatula from central France over the past 12 years

Mage

Bourgne²,

Toullieu³

et al. 2002

Vet. Res.

141

100

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“…Several investigations on the ecology of nematode larvae in temperate areas have focused on seasonal variation in the availability of GIT nematode larvae on the pasture of domestic herbivores (Brunsdon, 1970;Donald et al, 1978;Evans, 1974;Gibbs, 1967;Ollerenshaw & Smith, 1969;Southcott et al, 1976), or on the effect of vegetation height on pasture contamination (Angus, 1978;Gibson, 1966). Moreover, a number of studies have concentrated on the climatic (seasonal) variation in pasture contamination in tropical ecosystems carrying pure domestic stocks (Banks et al, 1990;Bekele et al, 1992;Cheijina & Fakae, 1984;Chartier, 1991;Dinnik & Dinnik, 1961;Kabasa, 1999;Onyali et al, 1990), or a mixed cattle/game stocking (Ocaido, 1995). Data on the contamination of latrines from a tropical (long-term) ……….…”

Section: Discussionmentioning

confidence: 99%

“…In this study, we investigated PCL in a central African savannah eco-system. The development and survival of infective larvae of GIT nematodes on pasture in tropical environments have been reported to be primarily affected by the seasonal climatic changes between the dry and the wet season (Banks et al, 1990;Bekele et al, 1992;Chartier, 1991;Chiejina & Fakae, 1984;Dinnik & Dinnik, 1961;Onyali et al, 1990). The effect of the vegetation height on larval availability in tropical climates, on the other hand, has so far barely been studied.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, our main goal was to determine whether there are differences in PCL between different feeding heights in our study area, Queen HELMINTHOLOGIA, 43, 3: 134 -138, SEPTEMBER 2006 Foraging height levels and the risk of gastro-intestinal tract parasitic infections of wild ungulates in an African savannah eco-system Elizabeth National Park. Following previous studies, we also asked if the change between the dry and the wet season has an effect on the larval availability of pasture, with a stronger pasture contamination during the wet season (Banks et al, 1990;Dinnik & Dinnik, 1961;Onyali et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Foraging height levels and the risk of gastro-intestinal tract parasitic infections of wild ungulates in an African savannah eco-system

Apio

Plath²,

Wronski³

2006

Helminthologia

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SummaryGrazing herbivores mainly feed at low feeding height levels, while browsers select food items above ground level. Previous studies on gastrointestinal tract (GIT) nematode parasite burdens of African ungulates have suggested that browsing species hereby minimise the risk of infection with parasites. Here, we investigated the influence of feeding height levels on the pasture larval contamination level (PCL) in a natural African savannah eco-system in Queen Elizabeth National Park, western Uganda. The prevalence and mean abundance of infectious GIT nematode larvae on the pasture were used as measures of pasture contamination. Vegetation samples were examined following standard larval isolation, concentration and counting techniques. We found the feeding height level to be significantly related to the occurrence of infectious GIT nematode larvae, and the contamination was highest at low feeding levels. There was no statistically significant seasonal variation in the prevalence or mean abundance of the contamination of pastures with nematode larvae.

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“…; sphincters papillaires trois fois plus puissants ; nombre de faisceaux musculaires de -2 variant dans des limites importantes (de 3 à 37) ; pars prostatica plus longue que large et pars musculosa beaucoup plus sinueuse ; dimen sions de l'ouverture et de la chambre génitale plus grande [3,12,13].…”

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Existence en France de Paramphistomum daubneyi Dinnik 1962. (Trematoda : Paramphistomata)

Graber¹,

Chauve²,

Fonteneau³

et al. 1980

bavf

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The authors point out, for the first time, the presence of Paramphistomum daubneyi Dinnik, 1962 in the rumen of cattle originating from Loire and Maine-et-Loire departments (France). As Fasciola hepatica, the intermediate host is a lymnaeid snail, Lymnaea truncatula. It seems that the very closely related species Paramphistomum microbothrium Fischœder, 1901 which develops exclusively in Bulinid snails occurs only in Corsica to the exclusion of french continental territory where Butinids are not indigeneous. The pathological action of Paramphistomum daubneyi is discussed.

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Paramphistomum daubneyi sp.nov. from cattle and its snail host in the Kenya Highlands

Cited by 47 publications

References 2 publications

Fasciola hepatica and Paramphistomum daubneyi: changes in prevalences of natural infections in cattle and in Lymnaea truncatula from central France over the past 12 years

Fasciola hepatica and Paramphistomum daubneyi: changes in prevalences of natural infections in cattle and in Lymnaea truncatula from central France over the past 12 years

Foraging height levels and the risk of gastro-intestinal tract parasitic infections of wild ungulates in an African savannah eco-system

Existence en France de Paramphistomum daubneyi Dinnik 1962. (Trematoda : Paramphistomata)

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