Medical Parasitology

Piekarski, G.

doi:10.1007/978-3-642-72948-5

Cited by 14 publications

(4 citation statements)

References 83 publications

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“…Inspite of the fact that a female A. duodenale lays an average of 30,000 eggs per day compared to about 9000 by an adult female N. americanus (Piekarski, 1989), much higher numbers of N. americanus infective larvae were recovered in coprocultures, compared to A. duodenale in all mixed infections. This would suggest that much higher number of adult female egg-laying N. americanus worms were present compared to A. duodenale in mixed infections, as all the eggs were subjected to the same culture conditions.…”

Section: Discussionmentioning

confidence: 90%

“…It may be worth mentioning here, that the two hookworm species differ in susceptibility to the same anthelmintic and dosage regimen. Thus, efficacy of anthelmintic therapy is dependent on the infecting species of hookworm (Piekarski, 1989). Well-known anthelmintics such as Alcopar (Bephenium) and Pyrantel are known to be comparatively less effective against N. americanus than A. duodenale (Rajasekariah et al, 1986).…”

Section: Discussionmentioning

confidence: 99%

“…A. duodenale is the more pathogenic of the two species as about 0.02 ml of blood is lost per worm per day with Necator compared to about 0.1 ml with Ancylostoma (Piekarski, 1989). Albonico et al (1998) have recently shown that infection with A. duodenale in Zanzibari schoolchildren has a greater impact on anaemia than infection with N. americanus.…”

Section: Discussionmentioning

confidence: 99%

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Relative prevalence of the human hookworm species, Necator americanus and Ancylostoma duodenale in an urban community in Ogun State, Nigeria

Adenusi¹,

Ogunyomi²

2003

Afr. J. Biotechnol.

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In order to estimate the proportion of hookworm infections represented by Necator americanus and Ancylostoma duodenale, the 2 major species of human hookworms in Nigeria, stool samples from 1253 hookworm-positive schoolchildren were cultured to the third-stage (L 3 ), filariform larvae, using the Harada-Mori test-tube method. N. americanus larvae were recovered from a total of 1177 (93.9%) coprocultures while A. duodenale larvae were recovered from a total of 274 (21.9%) stool cultures. 58.2% of the hookworm infections were due solely to N. americanus, 6.1% solely to A. duodenale and 25.8% were mixed infections with both species. In all mixed infections, much higher number of N. americanus larvae were recorded compared with those of A. duodenale.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Relative prevalence of the human hookworm species, Necator americanus and Ancylostoma duodenale in an urban community in Ogun State, Nigeria

Adenusi¹,

Ogunyomi²

2003

Afr. J. Biotechnol.

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“…Although most life cycles of endoparasites take place inside hosts, which act as a protective barrier against deleterious environmental conditions (e.g. associated with latitude – Willig et al 2003), some of the most crucial phases associated with dispersal or host changing take place outside hosts' bodies (Piekarski, 1962; Graczyk et al 2005). In such occasions parasites are sensitive to adverse environmental factors and benefit from mild conditions (e.g.…”

Section: Discussionmentioning

confidence: 99%

Biogeographical region and host trophic level determine carnivore endoparasite richness in the Iberian Peninsula

et al. 2011

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We address the question of whether host and/or environmental factors might affect endoparasite richness and distribution, using carnivores as a model. We reviewed studies published in international peer-reviewed journals (34 areas in the Iberian Peninsula), describing parasite prevalence and richness in carnivores, and collected information on site location, host bio-ecology, climate and detected taxa (Helminths, Protozoa and Mycobacterium spp.). Three hypotheses were tested (i) host based, (ii) environmentally based, and (iii) hybrid (combination of environmental and host). Multicollinearity reduced candidate variable number for modelling to 5: host weight, phylogenetic independent contrasts (host weight), mean annual temperature, host trophic level and biogeographical region. General Linear Mixed Modelling was used and the best model was a hybrid model that included biogeographical region and host trophic level. Results revealed that endoparasite richness is higher in Mediterranean areas, especially for the top predators. We suggest that the detected parasites may benefit from mild environmental conditions that occur in southern regions. Top predators have larger home ranges and are likely to be subjected to cascading effects throughout the food web, resulting in more infestation opportunities and potentially higher endoparasite richness. This study suggests that richness may be more affected by historical and regional processes (including climate) than by host ecological processes.

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Foodborne Animal Parasites

Jay¹

2000

Modern Food Microbiology

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Medical Parasitology

Cited by 14 publications

References 83 publications

Relative prevalence of the human hookworm species, Necator americanus and Ancylostoma duodenale in an urban community in Ogun State, Nigeria

Relative prevalence of the human hookworm species, Necator americanus and Ancylostoma duodenale in an urban community in Ogun State, Nigeria

Biogeographical region and host trophic level determine carnivore endoparasite richness in the Iberian Peninsula

Foodborne Animal Parasites

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