Bird schistosomes in planorbid snails in the Czech Republic

Aldhoun, Jitka A.; Podhorský, Martin; Holická, Monika; Horák, Petr

doi:10.1016/j.parint.2011.10.006

Cited by 20 publications

(14 citation statements)

References 22 publications

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“…Current results based on all of the available sequence data in GenBank for the internal transcribed spacer (ITS) region indicate that there are about nine distinct lineages, only two of which are described: Gigantobilharzia and Dendritobilharzia (40,(64)(65)(66)(67)(68)(69). Most of the lineages in this part of clade D have one to a few species and have been seen in only a few cases, many related to dermatitis outbreaks (12) ( Table 1).…”

Section: Diversity Of Schistosomes Causing Dermatitismentioning

confidence: 99%

“…Traditional methods using morphology (adults mostly, but also eggs and cercariae) are usually not sufficient to separate species, particularly within a genus, as these characteristics can be missing or minute, and their recognition often depends on the experience of the observer. However, some characteristics have been found to be informative for rough species identification, such as the position of internal organs and tegument spination of adults (13), morphology of eggs (244), or distribution of sensory papillae on cercariae (68,198).…”

Section: Detection and Identification Of Avian Schistosomesmentioning

confidence: 99%

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Avian Schistosomes and Outbreaks of Cercarial Dermatitis

et al. 2015

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SUMMARY Cercarial dermatitis (swimmer's itch) is a condition caused by infective larvae (cercariae) of a species-rich group of mammalian and avian schistosomes. Over the last decade, it has been reported in areas that previously had few or no cases of dermatitis and is thus considered an emerging disease. It is obvious that avian schistosomes are responsible for the majority of reported dermatitis outbreaks around the world, and thus they are the primary focus of this review. Although they infect humans, they do not mature and usually die in the skin. Experimental infections of avian schistosomes in mice show that in previously exposed hosts, there is a strong skin immune reaction that kills the schistosome. However, penetration of larvae into naive mice can result in temporary migration from the skin. This is of particular interest because the worms are able to migrate to different organs, for example, the lungs in the case of visceral schistosomes and the central nervous system in the case of nasal schistosomes. The risk of such migration and accompanying disorders needs to be clarified for humans and animals of interest (e.g., dogs). Herein we compiled the most comprehensive review of the diversity, immunology, and epidemiology of avian schistosomes causing cercarial dermatitis.

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Section: Diversity Of Schistosomes Causing Dermatitismentioning

confidence: 99%

Section: Detection and Identification Of Avian Schistosomesmentioning

confidence: 99%

Avian Schistosomes and Outbreaks of Cercarial Dermatitis

et al. 2015

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“…Figures 1 and 2 reveal that host switching among schistosomes with respect to their snail hosts has been pronounced [27, 29, 33, 34, 71]. Yet this pattern is somewhat paradoxical because experimental studies with schistosomes show them to be very specific with respect to the snail species they are able to colonize [38, 71, 72].…”

Section: Discovery-based Diversity Studies Are Incubators Of New Hypomentioning

confidence: 99%

“…Yet this pattern is somewhat paradoxical because experimental studies with schistosomes show them to be very specific with respect to the snail species they are able to colonize [38, 71, 72]. How does historical host shifting in snails make sense in light of their evident host specificity we see today?…”

Section: Discovery-based Diversity Studies Are Incubators Of New Hypomentioning

confidence: 99%

Discovery-based studies of schistosome diversity stimulate new hypotheses about parasite biology

Brant¹,

Loker²

2013

Trends in Parasitology

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This review provides an update of ongoing efforts to expand our understanding of the diversity inherent within the Schistosomatidae, the parasites responsible for causing schistosomiasis and cercarial dermatitis. By revealing more of the species present, particularly among under-studied avian schistosomes, we gain increased understanding of patterns of schistosome diversification, and their abilities to colonize new hosts and habitats. Schistosomes reveal a surprising ability to switch into new snail and vertebrate host species, into new intra-host habitats, and may adopt novel body forms in the process. Often these changes are not associated with deep splits or long branches in their phylogeny, suggesting they are of relatively recent origin. Several hypotheses prompted by the new observations are discussed, helping to focus thinking on processes influencing not only schistosome diversification, but also their pathogenicity and abundance.

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“…were reported to act as the first and second most common intermediate hosts of trematodes in the family Echinostomatidae [9] . Furthermore, the planorbis snails are intermediate hosts of blood fluke in family Schistosomatidae [10,11] .…”

Section: Introductionmentioning

confidence: 99%