The effects of environmental factors on the development, behaviour and survival of Paramphistomum microbothrium miracidia

Fagbemi, Benjamin O.

doi:10.1016/0304-4017(84)90009-8

Cited by 9 publications

(9 citation statements)

References 15 publications

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“…Pura region. The variations pertaining to the prevalence of flukes in a particular region can be attributed to the prevalence of intermediate host species, beside the biology of larval stages of the flukes, and also of the intermediate hosts, is influenced to a great extent by ecological factors in that area (Fegbemi 1984). The Kandi region is lowland, having dry and calcareous soil with rain fed rivulets which remain dry during the majority part of the year and provides favourable biotopes for the survival and development of snails and ants.…”

Section: Discussionmentioning

confidence: 99%

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Dicrocoeliosis in goats in Jammu, India

et al. 2012

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The prevalence of dicrocoeliosis was estimated by the examination of liver of slaughtered goats (n = 228) brought from two major goat rearing regions (Kandi and R.S. Pura) of Jammu province of India. Dicrocoelium dendriticum was found in 18.9 % of the goats, with mean fluke count (±SEM) of 24.9 ± 4.4 (ranged from 0 to 478). A significant seasonal variation (p \ 0.01) was recorded with maximum prevalence in winter (28.9 %), followed by post-rainy (22.2 %) and minimum in rainy season (9.4 %). The highest fluke count was observed in January (47.8 ± 24.6) while none of the examined animals was found positive in May and June. The origin of the goats had a significant association (p \ 0.0001) with prevalence rates and the goats from Kandi region (27.3 %) showed higher prevalence rates as compare to R.S. Pura (8.0 %). However, the age and sex had no significant effect on the prevalence of dicrocoeliosis in goats. The histopathological examination of infected livers revealed excessive thickening and proliferation of bile duct glandular epithelium with inflammatory exudates. Also, intense mononuclear cells infiltration with young fibroblasts was observed in the surroundings of bile ducts in portal areas along with atrophy of hepatocytes.

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Section: Discussionmentioning

confidence: 99%

“…The epidemiology of the fluke diseases is closely associated with environmental factors, and ecology and the prevalence of intermediate host(s) in a particular area (Fegbemi 1984). In a certain geographical region, the climate determines the type and severity of parasitic infections in pasture grazing animals (Arambulo and Moran 1981).…”

Section: Introductionmentioning

confidence: 99%

Dicrocoeliosis in goats in Jammu, India

et al. 2012

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“…Fungi have been reported to infect eggs and miracidia of trematodes as well as oncospheres of cestodes, thus decreasing their survival and infectivity (Butler and Buckley, 1927 ;Fagbemi, 1984). Fungi have also been found to infect nematode eggs in dung pats from livestock.…”

Section: H Y P E R P a R A S I T I S Mmentioning

confidence: 97%

The role of biotic factors in the transmission of free-living endohelminth stages

2008

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The transmission success of free-living larval stages of endohelminths is generally modulated by a variety of abiotic and biotic environmental factors. Whereas the role of abiotic factors (including anthropogenic pollutants) has been in focus in numerous studies and summarized in reviews, the role of biotic factors has received much less attention. Here, we review the existing body of literature from the fields of parasitology and ecology and recognize 6 different types of biotic factors with the potential to alter larval transmission processes. We found that experimental studies generally indicate strong effects of biotic factors, and the latter emerge as potentially important, underestimated determinants in the transmission ecology of free-living endohelminth stages. This implies that biodiversity, in general, should have significant effects on parasite transmission and population dynamics. These effects are likely to interact with natural abiotic factors and anthropogenic pollutants. Investigating the interplay of abiotic and biotic factors will not only be crucial for a thorough understanding of parasite transmission processes, but will also be a prerequisite to anticipate the effects of climate and other global changes on helminth parasites and their host communities.

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“…The epidemiology of the fluke diseases is closely associated with environmental factors, and ecology and the infection of snail intermediate host in a particular area (Fegbemi 1984). In a certain geographical region, the microclimate determines the type and severity of parasitic infections in pasture grazing animals (Arambulo and Moran 1981).…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of paramphistomosis in sheep and goats in Jammu, India

et al. 2013

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Epidemiology of paramphistomosis in sheep and goats was studied using field and abattoir samples at Jammu, India. Abattoir examination revealed that 36.2 % of sheep and 30.9 % of goats were positive for paramphistomosis. The mean worm counts (±SEM) were 23.5 ± 5.7 in sheep and 19.9 ± 3.5 in goats. On coprological examination, 16.3 % of sheep and 13.6 % of goats were found positive for paramphistomosis. The mean egg counts (±SEM) were 4.4 ± 2.6 in sheep and 3.6 ± 2.1 in goats. Season was found to have a significant (p \ 0.05) influence on the prevalence of paramphistomosis. A higher percentage of animals were found positive in rainy and post-rainy seasons as compared with summer and winter seasons. The distributions of eggs and adult flukes were significantly (p \ 0.01) different among seasons. The prevalences observed according to age and sex of sheep and goats were not significant. The study conclude that the late summer months are major risk period for paramphistomosis in the pasture grazing sheep and goats and the administration of an efficient anthelmintic in May-June and September-October should be strongly recommended to reduce the infection and minimise the perpetuating financial losses to animal owners in the region.

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The effects of environmental factors on the development, behaviour and survival of Paramphistomum microbothrium miracidia

Cited by 9 publications

References 15 publications

Dicrocoeliosis in goats in Jammu, India

Dicrocoeliosis in goats in Jammu, India

The role of biotic factors in the transmission of free-living endohelminth stages

Epidemiology of paramphistomosis in sheep and goats in Jammu, India

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