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Latitudinal Effects on Diversity and Body Size: A Case Study with Parasitoid and Parasitic Wasps

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dc.contributor.advisor Smith, M. Alex
dc.contributor.author Eagalle, Thanushi
dc.date.accessioned 2014-10-10T17:44:28Z
dc.date.available 2014-10-10T17:44:28Z
dc.date.copyright 2014-10
dc.date.created 2014-10-07
dc.date.issued 2014-10-10
dc.identifier.uri http://hdl.handle.net/10214/8517
dc.description.abstract While greater species diversity exists at tropical latitudes for many groups, certain parasitoid wasp families (i.e. Ichneumonidae) exhibit a peak in species diversity at mid-latitudes (Janzen 1981). Recently, authors have questioned the legitimacy of observed latitudinal trends in species richness, body size and biology for parasitoids, due to geographic and taxonomic sampling biases. I combined DNA barcoding data with ecological variables to quantify parasitoid diversity across a latitudinal gradient (~4.088 - 58.676°N) and to test whether enumerating diversity using DNA supports a mid-latitude peak. I also compared Ichneumonidae and Braconidae body size across the same latitudinal gradient to test whether parasitoid wasps followed the Bergmann’s rule – larger specimens found at higher latitudes. My diversity estimates suggested that the number of species was consistent across latitude, though species found at higher latitudes were more closely related to each other. Body size, specifically hind tibia length, exhibited converse-Bergmann clines. en_US
dc.description.sponsorship Northern Scientific Training Program, Northern Research Fund,Nouragues Travel Grants Program 2011, Shaw Woods Outdoor Education Centre and Parks Canada for their support of the BIObus program (NAP-2008-1636) en_US
dc.language.iso en en_US
dc.subject parasitoid en_US
dc.subject hymenoptera en_US
dc.subject insect body size en_US
dc.subject diversity en_US
dc.subject macroecology en_US
dc.title Latitudinal Effects on Diversity and Body Size: A Case Study with Parasitoid and Parasitic Wasps en_US
dc.type Thesis en_US
dc.degree.programme Integrative Biology en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Integrative Biology en_US
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