2026-09-19T16:26:08.424357600Zhttps://opus.uleth.ca/server/oai/requestoai:opus.uleth.ca:10133/1982021-06-28T14:21:59Zcom_10133_3346com_10133_1com_10133_296col_10133_3347col_10133_298
ULethbridge OPUS Repository
supervisor
Goater, Cameron P.
author
Schleppe, Jason L.
author
University of Lethbridge. Faculty of Arts and Science
2007-05-12T19:24:37Z
2007-05-12T19:24:37Z
2002
https://hdl.handle.net/10133/198
The population dynamics and life histories of two larval parasites of fathead minnows were investigated, together with their effects on host reproduction in natural populations. In two lakes in northern Alberta, Canada, 100% of fathead minnows (Pimephales promelas) are infected with larval trematodes (Ornithodiplostomum ptychcocheilus and Posthodiplostomum minimum) that encyst in their brains and mesentaries, respectively. The numbers of parasites in individual adult minnows varied extensively between and within two different lakes. Parallel laboratory studies indicated that selection imposed by common hosts in the life cycles of these species have shaped broadly similar life histories. Field collections of male minnows indicated that early in the breeding season, breeding males were longer than non-breeding males. Furthermore, breeding males had larger girths (independent of total length) and contained fewer numbers of three of 4 common larval trematodes than non-breeding males throughout the breeding season. These parasites most likely affect a male's ability to compete for or defend a nest.
en_US
Parasitology
Fathead minnow -- Parasites
Dissertations, Academic
The ecology of two larval parasites in fathead minnows
Thesis
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URL
http://localhost:4000/bitstreams/ab645453-f1fd-4d32-ae08-3bf233d3814a/download
File
MD5
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2681934
application/pdf
MQ83772.pdf
URL
http://localhost:4000/bitstreams/3a32375e-71d8-4b41-8e6d-0bdb39b25352/download
File
MD5
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text/plain
MQ83772.pdf.txt