Browsing Hutchings, Jeffrey A. by Author "Fraser, Dylan J."

Now showing items 1-6 of 6

  • Concurrent habitat and life history influences on effective/census population size ratios in stream-dwelling trout 

    Belmar-Lucero, Sebastian, Jacquelyn L. A. Wood, Sherylyne Scott, Andrew B. Harbicht, et al. 2012. "Concurrent habitat and life history influences on effective/census population size ratios in stream-dwelling trout." Ecology and Evolution 2(3): 562-573.
    Lower effective sizes (Ne) than census sizes (N) are routinely documented in natural populations, but knowledge of how multiple factors interact to lower N-e/N ratios is often limited. We show how combined habitat and ...

  • Consequences of farmed-wild hybridization across divergent wild populations and multiple traits in salmon 

    Fraser, Dylan J., Aimee Lee S. Houde, Paul V. Debes, Patrick O'Reilly, et al. 2010. "Consequences of farmed-wild hybridization across divergent wild populations and multiple traits in salmon." Ecological Applications 20(4): 935-953.
    Theory predicts that hybrid fitness should decrease as population divergence increases. This suggests that the effects of human-induced hybridization might be adequately predicted from the known divergence among parental ...

  • Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon 

    Morris, Matthew R. J., Dylan J. Fraser, James Eddington, and Jeffrey A. Hutchings. 2011. "Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon." Evolutionary Applications 4(3): 444-458.
    Compensatory growth (CG) is a means by which organisms can increase their growth rate above their routine growth rate after a period of environmentally induced growth depression. Despite a focus on the implications of ...

  • Mixed evidence for reduced local adaptation in wild salmon resulting from interbreeding with escaped farmed salmon: complexities in hybrid fitness 

    Fraser, Dylan J., Adam M. Cook, James D. Eddington, Paul Bentzen, et al. 2008. "Mixed evidence for reduced local adaptation in wild salmon resulting from interbreeding with escaped farmed salmon: complexities in hybrid fitness." Evolutionary Applications 1(3): 501-512.
    Interbreeding between artificially-selected and wild organisms can have negative fitness consequences for the latter. In the Northwest Atlantic, farmed Atlantic salmon recurrently escape into the wild and enter rivers ...

  • Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon 

    Normandeau, Eric, Jeffrey A. Hutchings, Dylan J. Fraser, and Louis Bernatchez. 2009. "Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon." Evolutionary Applications 2(4): 489-503.
    Because of intrinsic differences in their genetic architectures, wild populations invaded by domesticated individuals could experience population-specific consequences following introgression by genetic material of ...

  • Relative risks of inbreeding and outbreeding depression in the wild in endangered salmon 

    Houde, Aimee L. S., Dylan J. Fraser, Patrick O'Reilly, and Jeffrey A. Hutchings. 2011. "Relative risks of inbreeding and outbreeding depression in the wild in endangered salmon." Evolutionary Applications 4(5): 634-647.
    Conservation biologists routinely face the dilemma of keeping small, fragmented populations isolated, wherein inbreeding depression may ensue, or mixing such populations, which may exacerbate population declines via ...