Browsing Biology Faculty Research, Publications and Presentations by Title

Now showing items 130-149 of 185

  • 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 ...

  • Positive Darwinian Selection in the Piston That Powers Proton Pumps in Complex I of the Mitochondria of Pacific Salmon 

    Garvin, Michael R., Joseph P. Bielawski, and Anthony J. Gharrett. 2011. "Positive Darwinian Selection in the Piston That Powers Proton Pumps in Complex I of the Mitochondria of Pacific Salmon." Plos One 6(9): 24127-e24127.
    The mechanism of oxidative phosphorylation is well understood, but evolution of the proteins involved is not. We combined phylogenetic, genomic, and structural biology analyses to examine the evolution of twelve mitochondrial ...

  • 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 ...

  • Predicting wave dislodgment of mussels: variation in attachment strength with body size, habitat, and season 

    Hunt, HL, and RE Scheibling. 2001. "Predicting wave dislodgment of mussels: variation in attachment strength with body size, habitat, and season." Marine Ecology Progress Series 213: 157-164. doi:10.3354/meps213157
    Breaking waves impose large hydrodynamic forces which may dislodge mussels and other organisms living on exposed rocky shores. We examined the effect of variation in attachment strength with size, habitat and season on ...

  • Prevalence and evolution of core photosystem II genes in marine cyanobacterial viruses and their hosts 

    Sullivan, Matthew B., Debbie Lindell, Jessica A. Lee, Luke R. Thompson, et al. 2006. "Prevalence and evolution of core photosystem II genes in marine cyanobacterial viruses and their hosts." Plos Biology 4(8): 1344-1357.
    Cyanophages ( cyanobacterial viruses) are important agents of horizontal gene transfer among marine cyanobacteria, the numerically dominant photosynthetic organisms in the oceans. Some cyanophage genomes carry and express ...

  • Prey Exchange Rates and the Impact of Predators on Prey Populations in Streams 

    Cooper, S. D., S. J. Walde, and B. L. Peckarsky. 1990. "Prey Exchange Rates and the Impact of Predators on Prey Populations in Streams." Ecology (Washington D C) 71(4): 1503-1514.
    We present four lines of evidence that the magnitude of prey exchange (=immigration/emigration) among substrate patches has an overwhelming influence on the perceived effects of predators on prey populations. (1) An extensive ...

  • Primiparous and multiparous females differ in mammary gland alveolar development: implications for milk production 

    Lang, Shelley L. C., Sara J. Iverson, and W. Don Bowen. 2012. "Primiparous and multiparous females differ in mammary gland alveolar development: implications for milk production." Journal of Experimental Biology 215(16): 2904-2911.
    Mammary gland capacity is influenced by the number of secretory cells in the gland, the activity of those cells and the size and arrangement of the alveoli that they form. Although reproductive experience has been shown ...

  • Procedural effects of prey tethering experiments: Predation of juvenile scallops by crabs and sea stars 

    Barbeau, M. A., and R. E. Scheibling. 1994. "Procedural effects of prey tethering experiments: Predation of juvenile scallops by crabs and sea stars." Marine Ecology Progress Series 111(3): 305-310. doi:10.3354/meps111305
    This study examines the effects of an experimental tethering procedure often used in field predation experiments. In laboratory experiments, juvenile sea scallops Placopecten magellanicus, either free or tethered, were ...

  • Quantitative fatty acid signature analysis: A new method of estimating predator diets 

    Iverson, Sara J., Chris Field, W. Don Bowen, and Wade Blanchard. 2004. "Quantitative fatty acid signature analysis: A new method of estimating predator diets." Ecological Monographs 74(2): 211-235. Copyright by the Ecological Society of America
    Accurate estimates of the diets of predators are required in many areas of ecology, but for many species current methods are imprecise, limited to the last meal, and often biased. The diversity of fatty acids and their ...

  • Rapid Global Expansion of Invertebrate Fisheries: Trends, Drivers, and Ecosystem Effects 

    Anderson, Sean C., Joanna Mills Flemming, Reg Watson, and Heike K. Lotze. 2011. "Rapid Global Expansion of Invertebrate Fisheries: Trends, Drivers, and Ecosystem Effects." Plos One 6(3): 14735-e14735.
    Background: Worldwide, finfish fisheries are receiving increasing assessment and regulation, slowly leading to more sustainable exploitation and rebuilding. In their wake, invertebrate fisheries are rapidly expanding with ...

  • Reciprocal Subsidies and Food Web Pathways Leading to Chum Salmon Fry in a Temperate Marine-Terrestrial Ecotone 

    Romanuk, Tamara N., and Colin D. Levings. 2010. "Reciprocal Subsidies and Food Web Pathways Leading to Chum Salmon Fry in a Temperate Marine-Terrestrial Ecotone." Plos One 5(4): 10073-e10073.
    Stable isotope analysis was used to determine the relative proportions of terrestrial and marine subsidies of carbon to invertebrates along a tidal gradient (low-intertidal, mid-intertidal, high-intertidal, supralittoral) ...

  • Recurrent outbreaks of disease in sea urchins Strongylocentrotus droebachiensis in Nova Scotia: Evidence for a link with large-scale meteorologic and oceanographic events 

    Scheibling, Robert E., and Allan W. Hennigar. 1997. "Recurrent outbreaks of disease in sea urchins Strongylocentrotus droebachiensis in Nova Scotia: Evidence for a link with large-scale meteorologic and oceanographic events." Marine Ecology Progress Series 152(1-3): 155-165. doi:10.3354/meps152155
    Recurrent outbreaks of a disease (paramoebiasis, caused by a marine amoeba Paramoeba invadens) result in mass mortalities of sea urchins Strongylocentrotus droebachiensis in the rocky subtidal zone of the Atlantic coast ...

  • Reduced Retinal Function in the Absence of Na(v)1.6 

    Smith, Benjamin J., and Patrice D. Cote. 2012. "Reduced Retinal Function in the Absence of Na(v)1.6." Plos One 7(2): 31476-e31476.
    Background: Mice with a function-blocking mutation in the Scn8a gene that encodes Na(v)1.6, a voltage-gated sodium channel (VGSC) isoform normally found in several types of retinal neurons, have previously been found to ...

  • Refuge dynamics and metapopulation dynamics: An experimental test 

    Murdoch, WW, SL Swarbrick, RF Luck, S. Walde, et al. 1996. "Refuge dynamics and metapopulation dynamics: An experimental test." American Naturalist 147(3): 424-444.
    Red scale, an insect pest of citrus, is under control by the parasitoid Aphytis melinus in many areas, and in our study area the interaction appears dynamically stable. The bark on the interior branches and trunk of trees ...

  • A Refuge for Red Scale the Role of Size-Selectivity by a Parasitoid Wasp 

    Walde, S. J., R. F. Luck, D. S. Yu, and W. W. Murdoch. 1989. "A Refuge for Red Scale the Role of Size-Selectivity by a Parasitoid Wasp." Ecology (Washington D C) 70(6): 1700-1706.
    The presence of a physical refuge (an area where mortality due to parasitism is very low) has been demonstrated for California red scale, a pest of citrus. Density of red scale is very high, and parasitism by the principal ...

  • A Refuge for Red Scale Under Control by Aphytis - Structural Aspects 

    MURDOCH, WW, RF LUCK, SJ WALDE, JD REEVE, et al. 1989. "A Refuge for Red Scale Under Control by Aphytis - Structural Aspects." Ecology 70(6): 1707-1714.
    No abstract available.

  • Regional-scale effects of eutrophication on ecosystem structure and services of seagrass beds 

    Schmidt, Allison L., Jessica K. C. Wysmyk, Susanne E. Craig, and Heike K. Lotze. 2012. "Regional-scale effects of eutrophication on ecosystem structure and services of seagrass beds." Limnology and Oceanography 57(5): 1389-1402.
    Using large-scale field surveys across 12 estuaries in two provinces in Atlantic Canada, we analyzed changes in phytoplankton and benthic macroalgal communities as well as the canopy structure of eelgrass beds and quantified ...

  • Regulation of an Insect Population Under Biological-Control 

    MURDOCH, WW, RF LUCK, SL SWARBRICK, S. WALDE, et al. 1995. "Regulation of an Insect Population Under Biological-Control." Ecology 76(1): 206-217.
    California red scale is suppressed to very low densities by the parasitoid Aphytis melinus. The system also appears stable. We report on an experimental test of the hypothesis that stability is caused by a refuge for scale. ...

  • 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 ...