dc.contributor.advisor |
Bjørnson, Susan Eleanor |
|
dc.creator |
Saito, Taro |
|
dc.date.accessioned |
2011-05-09T12:31:44Z |
|
dc.date.available |
2011-05-09T12:31:44Z |
|
dc.date.issued |
2008 |
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dc.identifier.other |
QL596 C65 S248 2008 |
|
dc.identifier.uri |
http://library2.smu.ca/xmlui/handle/01/22250 |
|
dc.description |
vi, 61 leaves : ill. (chiefly col.) ; 29 cm. |
|
dc.description |
Includes abstract and appendices. |
|
dc.description |
Includes bibliographical references (leaves 53-57). |
|
dc.description.abstract |
A microsporidium from <i>H. convergens</i> was transmitted horizontally to three non-target coccinellids (<i>Adalia bipunctata</i> L., <i>Coccinella septempunctata</i> L. and <i>Harmonia axyridis</i> Pallas) under laboratory conditions. The effects of microsporidiosis on larval development, larval mortality, sex ratio, fecundity and adult longevity were examined. For all beetle species, larval development was prolonged as a result of infection. Fecundity and longevity was adversely affected only for the natural host, <i>H. convergens</i>. Spore counts were similar for <i>A. bipunctata</i> and <i>H. convergens</i> but fewer spores were observed in <i>C. septempunctata</i> and <i>H. axyridis</i>. Vertical transmission of the pathogen was observed in all host species. Three eugregarines were found and described from two adult <i>A. bipunctata</i>. In <i>H. convergens</i>, the microsporidium infected muscles surrounding the midgut and within the fat body, Malpighian tubules, pyloric valve epithelium, colon epithelium, nerves, muscles, connective tissues, and ovaries. Tissue pathology differed for <i>C. septempunctata</i> and <i>H axyridis</i>. |
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dc.description.provenance |
Made available in DSpace on 2011-05-09T12:31:44Z (GMT). No. of bitstreams: 0 |
en |
dc.language.iso |
en |
|
dc.publisher |
Halifax, N.S. : Saint Mary's University |
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dc.subject.lcc |
QL596.C65 |
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dc.subject.lcsh |
Ladybugs -- Parasites |
|
dc.subject.lcsh |
Hippodamia -- Parasites |
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dc.subject.lcsh |
Microsporidia |
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dc.title |
Effects and tissue pathology of an unidentified microsporidium from the convergent lady beetle, Hippodamia convergens Guérin-Méneville (Coleoptera: Coccinellidae), on three non-target coccinellids |
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dc.type |
Text |
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thesis.degree.name |
Master of Science in Applied Science |
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thesis.degree.level |
Masters |
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thesis.degree.discipline |
Biology |
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thesis.degree.grantor |
Saint Mary's University (Halifax, N.S.) |
|