| Abstract: | Most studies using demographic PVA models in a context of species restoration have concluded that
rather than the rate of introduction, the total number of individuals released had the most important
significant influence on the chance of success. In this article we use a genetic simulation model including
deleterious and adaptive alleles to assess the impact of the method of release on the change in population
mean fitness. We systematically compare a strategy that consists in releasing all individuals at the same
time with a strategy that consists in staggering releases over a long period of time. Our results show that
the former strategy is more beneficial for long-term fitness when considering advantageous genes only,
while the latter is better when considering deleterious genes only. If deleterious and adaptive alleles are
considered together, the best strategy depends then essentially on which of these types of alleles has the
stronger influence on the change in total fitness. Although the relative contributions of the variance in
total fitness due to adaptive and deleterious alleles may vary with the initial frequencies and the selective
and dominance effects of these alleles, our results show that the optimal rate of release is mostly
dependant on the expected long-term population size. Thus from a genetic view-point, the temporal
release strategy of reintroduced populations should be considered with respect to their environmenta??s
carrying capacity. |
| Genre: | Article |
| ProdID: | 1016301 |
| Citation Author: | Haig, Susan M.; Forsman, E. D.; Mullins, Thomas D. |
| Citation Contributing Office: | Forest and Rangeland Ecosystem Science Center |
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| Citation End Page: | 705 |
| Citation Issue: | 5 |
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| Citation Language: | English |
| Citation Larger Work Title: | Conservation Genetics |
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| Citation Month: | SEP |
| Citation No Pagination: | |
| Citation Number Of Pages: | 23 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | p. 683-705 |
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| Citation Search Results Text: | Subspecific relationships and genetic structure in the spotted owl; 2004; Article; Journal; Conservation Genetics; Haig, Susan M.; Forsman, E. D.; Mullins, Thomas D. |
| Citation Start Page: | 683 |
| Citation Volume: | 5 |
| Citation Year: | 2004 |
| Type: | citation/reference |
| Text: | Subspecific relationships and genetic structure in the spotted owl; 2004; Article; Journal; Conservation Genetics; Haig, Susan M.; Forsman, E. D.; Mullins, Thomas D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 2004 00:00 -0600 |
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