Browsing Hutchings, Jeffrey A. by Title

Now showing items 9-19 of 19

  • Individual variation in Atlantic salmon fertilization success: Implications for effective population size 

    Jones, MW, and JA Hutchings. 2002. "Individual variation in Atlantic salmon fertilization success: Implications for effective population size." Ecological Applications 12(1): 184-193.
    Mating structure can influence the variance in individual reproductive success, which in turn has important implications for a population's effective size. Atlantic salmon (Salmo salar) males are characterized by alternative ...

  • The Influence of Operational Sex Ratio on the Intensity of Competition for Mates 

    Weir, Laura K., James W. A. Grant, and Jeffrey A. Hutchings. 2011. "The Influence of Operational Sex Ratio on the Intensity of Competition for Mates." American Naturalist 177(2): 167-176.
    The evolution and maintenance of secondary sexual characteristics and behavior are heavily influenced by the variance in mating success among individuals in a population. The operational sex ratio (OSR) is often used as ...

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  • Life-history correlates of extinction risk and recovery potential 

    Hutchings, Jeffrey A., Ransom A. Myers, Veronica B. Garcia, Luis O. Lucifora, et al. 2012. "Life-history correlates of extinction risk and recovery potential." Ecological Applications 22(4): 1061-1067.
    Extinction risk is inversely associated with maximum per capita population growth rate (r(max)). However, this parameter is not known for most threatened species, underscoring the value in identifying correlates of r(max) ...

  • 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 ...

  • Potential for anthropogenic disturbances to influence evolutionary change in the life history of a threatened salmonid 

    Williams, John G., Richard W. Zabel, Robin S. Waples, Jeffrey A. Hutchings, et al. 2008. "Potential for anthropogenic disturbances to influence evolutionary change in the life history of a threatened salmonid." Evolutionary Applications 1(2): 271-285.
    Although evolutionary change within most species is thought to occur slowly, recent studies have identified cases where evolutionary change has apparently occurred over a few generations. Anthropogenically altered ...

  • The relationship between offspring size and fitness: integrating theory and empiricism 

    Rollinson, Njal, and Jeffrey A. Hutchings. 2013. "The relationship between offspring size and fitness: integrating theory and empiricism." Ecology 94(2): 315-324.
    How parents divide the energy available for reproduction between size and number of offspring has a profound effect on parental reproductive success. Theory indicates that the relationship between offspring size and ...

  • 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 ...

  • Response: on the consequences of sexual selection for fisheries-induced evolution 

    Hutchings, Jeffrey A., and Sherrylynn Rowe. 2008. "Response: on the consequences of sexual selection for fisheries-induced evolution." Evolutionary Applications 1(4): 650-651.
    No abstract available.

  • Why do fish stocks collapse? The example of cod in Atlantic Canada 

    Myers, RA, JA Hutchings, and NJ Barrowman. 1997. "Why do fish stocks collapse? The example of cod in Atlantic Canada." Ecological Applications 7(1): 91-106.
    In 1993, six Canadian populations of Atlantic cod (Gadus morhua) had collapsed to the point where a moratorium was declared on fishing. It has been argued that the collapses were caused by poor recruitment of cod to the ...