Use of molecular markers to investigate epidemiology of and host manipulation by the invasive parasite Dicrocoelium dendriticum
Date
2017
Authors
van Paridon, Bradley
University of Lethbridge. Faculty of Arts and Science
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Publisher
Lethbridge, Alta : University of Lethbridge, Dept. of Biological Sciences
Abstract
Parasite distributions are rapidly expanding, in large part due to human mediated translocations of hosts. Thus, instances of parasite-spread to new hosts are common. Management of these emerging parasites depends on understanding the host-shifts occurring within invasive areas and the pathway of invasion; both of which can be investigated using molecular markers. Dicrocoelium dendriticum is one such emerging parasite, which has invaded Alberta. Here, I use molecular markers to identify two local Albertan hosts colonized by D. dendriticum; the snail Oreohelix subrudis and the ant Formica aserva. I also developed a panel of nine microsatellite markers that showed two separate introductions of the parasite into Canada. Furthermore, the markers also identified “clumped clonal transmission” throughout the life-cycle, which has implications for the potential evolution of cooperation via kin selection, in this behaviour altering parasite.
Description
Keywords
complex life cycle trematodes , host manipulation , lancet liver fluke , microsatellite markers , molecular markers , terrestrial life cycle , Liver flukes -- Cypress Hills Interprovincial Park (Alta. and Sask.) , Parasites -- Behavior -- Cypress Hills Interprovincial Park (Alta. and Sask.) , Parasites -- Life cycles -- Cypress Hills Interprovincial Park (Alta. and Sask.) , Host-parasite relationships , Trematoda -- Life cycles -- Cypress Hills Interprovincial Park (Alta. and Sask.) , Microsatellites (Genetics) , Molecular parasitology , Molecular epidemiology , Parasitology -- Research