dc.contributor.author |
Bray, Timothy C.
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dc.date.accessioned |
2014-05-23T10:47:30Z |
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dc.date.issued |
2014-04 |
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dc.description.abstract |
The African wild silk moth (Gonometa postica) exhibits large inter-annual population size fluctuations in the Kalahari region of southern Africa. Spent cocoons from this species are currently being utilized in a local silk industry. An understanding of the recolonization dynamics of a particular harvested site, and of the population genetic effects of such dispersal, are crucial for designing a scientifically-based harvesting strategy. I link morphological estimates of flying ability to microsatellite genotyping in the determination of dispersal ability of this species. Morphological results suggest that the moth is a poor disperser with high wing loadings and males are better fliers than females. There is a significant effect of isolation-by-distance. Spatial population genetic analyses of microsatellite data further indicate lower and upper bounds on dispersal of 90 m and 50 km. The combined evidence suggests male-biased dispersal over several dozen kilometers with females that do not disperse over large distances. I discuss the potential influences of large population size fluctuations on patterns of genetic diversity and the implications for the inference of dispersal in my study species. |
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dc.description.embargo |
2015-04-30 |
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dc.description.librarian |
am2014 |
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dc.description.librarian |
ab2014 |
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dc.description.sponsorship |
The Mellon Foundation
Grant to the Ph.D. project of W. Delport, and by a
National Research Foundation grant. |
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dc.description.uri |
http://africanzoology.journals.ac.za/ |
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dc.identifier.citation |
Bray, TC 2014, 'Spatial genetic pattern in an economically beneficial insect, the cyclical African wild silk moth (Gonometa postica)', African Zoology, vol. 49, no. 1, pp. 94-106. |
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dc.identifier.issn |
1562-7020 (print) |
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dc.identifier.issn |
2224-073X (online) |
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dc.identifier.uri |
http://hdl.handle.net/2263/39902 |
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dc.language.iso |
en |
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dc.publisher |
Zoological Society of Southern Africa |
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dc.rights |
SU LIS |
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dc.subject |
Isolation by distance |
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dc.subject |
Microsatellites |
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dc.subject |
Population cycles |
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dc.subject |
Spatial autocorrelation |
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dc.subject.lcsh |
Saturniidae |
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dc.subject.lcsh |
Silk industry |
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dc.subject.lcsh |
Cocoons |
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dc.subject.lcsh |
Lepidoptera |
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dc.title |
Spatial genetic pattern in an economically beneficial insect, the cyclical African wild silk moth (Gonometa postica) |
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dc.type |
Article |
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