Helminths in Rana pipiens Schreber, and Bufo hemiophrys Cope, from the Delta Marshes, Manitoba

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dc.contributor.authorHlynka, Leo Jurijen_US
dc.date.accessioned2012-05-10T21:14:16Z
dc.date.available2012-05-10T21:14:16Z
dc.date.issued1970en_US
dc.degree.disciplineZoologyen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractNine species of helminths were found in speciments of Rana pipiens (5 of trematodes, 3 of nematodes, and 1 of cestodes), and nine is speciments of Bufo hemiophrys (5 of trematodes, 3 of nematodes, and 1 of acanthocepahalans) from Delta. Four helminth species occurred in both hosts. Evidence suggested that the separation of Rhabdias bufonis and R. ranae is doubtful. Nine new host records and one new Canadian record were established. Anurans living mainly in a semi-aquatic environment were parasitized by higher numbers and more kinds of helminths than anurans living mainly in a terrestrial environment. Larger anurans had more kinds of helminths than smaller anurans. No significant difference was found in the intensity of helminthic infections between males and females of a particular host species. A statistical comparison of the expected and observed cases of juveniles and adult helminths in lungs suggested an antagonism between trematodes and nematodes. Changes in the extensity and intensity of infections were related to the habits of the definitive hosts and the lifecycles of the helminths.en_US
dc.format.extentx, 110 leaves :en_US
dc.identifierocm72777279en_US
dc.identifier.urihttp://hdl.handle.net/1993/5611
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.titleHelminths in Rana pipiens Schreber, and Bufo hemiophrys Cope, from the Delta Marshes, Manitobaen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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