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The role of rodents in the transmission of Echinococcus multilocularis and other tapeworms in a low endemic area

Miller, Andrea (2016). The role of rodents in the transmission of Echinococcus multilocularis and other tapeworms in a low endemic area. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2016:125
ISBN 978-91-576-8753-1
eISBN 978-91-576-8754-8
[Doctoral thesis]

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Abstract

Echinococcus multilocularis is zoonotic tapeworm in the Taeniidae family with a two part lifecycle involving a canid definitive host and a rodent intermediate host. The work of this thesis followed the first identification E. multilocularis in Sweden in 2011 in a red fox (Vulpes vulpes). The main purpose was to describe the importance of the rodents for E. multilocularis transmission in Sweden.

Echinococcus multilocularis was identified in both the water vole (Arvicola amphibius) and the field vole (Microtus agrestis), but not the bank vole (Myodes glareolus) or mice (Apodemus spp). As the number of E. multilocularis positive rodents was low (n=9), the examination of other taeniid parasites was used to investigate overall parasite transmission patterns. Rodents caught in field habitat (field voles and water voles) were ten times more likely to be parasitized than rodents caught in forest habitat (bank voles and mice). These results provide further support for the importance of field- and water voles found in field habitat for cestode transmission. Still, these rodent species differ from the most common rodent intermediate hosts in central Europe, and metacestode development within these species may be limited. Thus, the presence of E. multilocularis in Sweden could be constrained by the lack of an ideal intermediate host.

The distribution E. multilocularis was found to be highly aggregated with localized areas of high parasite egg contamination. Despite an extremely low national prevalence, multiple positive rodents and feces were identified in areas with known and unknown E. multilocularis status. This success is credited to the targeted sampling strategy, which was designed to focus collection efforts in areas where risk for parasite presence was estimated to be highest. This sampling strategy could be used as a basis for future risk-based sampling to detect E. multilocularis in areas where parasite prevalence is low or unknown.

Authors/Creators:Miller, Andrea
Title:The role of rodents in the transmission of Echinococcus multilocularis and other tapeworms in a low endemic area
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :November 2016
Depositing date:5 December 2016
Volume:2016:125
Number of Pages:73
Papers/manuscripts:
NumberReferences
IMiller, A. L., Olsson, G. E., Walburg, M. R., Sollenberg, S., Skarin, M., Ley, C., Wahlström, H., and Höglund, J. (2016). First identification of Echinococcus multilocularis in rodent intermediate hosts in Sweden. International Journal of Parasitology: Parasites and Wildlife 5(1), 56-63. doi: 10.1016/j.ijppaw.2016.03.001
IIMiller, A. L., Olsson, G. E., Sollenberg, S., Walburg, M. R., Skarin, M. S., and Höglund, J. Transmission ecology of taeniid liver parasites in rodents in Sweden, a low endemic area for Echinococcus multilocularis. (Manuscript).
IIIMiller, A. L., Olsson, G. E., Sollenberg, S., Skarin, M., Wahlström, H., and Höglund, J. Support for targeted sampling of red fox (Vulpes vulpes) feces in Sweden: a method to improve the probability of finding Echinococcus multilocularis (Parasites & Vectors, In Press)
Place of Publication:Uppsala
Publisher:Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences
Associated Programs and Other Stakeholders:SLU - Environmental assessment > Programme Forest
ISBN for printed version:978-91-576-8753-1
ISBN for electronic version:978-91-576-8754-8
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L20 Animal ecology
L Animal production > L72 Pests of animals
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 107 Other Natural Sciences > Other Natural Sciences not elsewhere specified
Agrovoc terms:echinococcus mutilocularis, rodents, foxes, voles, parasites, disease transmission, zoonoses, vectorborne diseases, disease control, sweden
Keywords:echinococcus multilocularis, rodent, targeted sampling, tapeworm, fox, intermediate host, transmission ecology, risk-based sampling
URN:NBN:urn:nbn:se:slu:epsilon-e-3826
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3826
ID Code:13878
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Biomedical Sciences and Veterinary Public Health
External funders:FORMAS
Deposited By: Andrea Miller
Deposited On:06 Dec 2016 09:10
Metadata Last Modified:06 Dec 2016 12:12
Project info:
Name:Echinococcus Multilocularis in RODENTS
Acronym:EMIRO
ID:(221-2011-2212)

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