Browsing Walde, Sandra J. by Title

Now showing items 8-12 of 12

  • 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.

  • 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. ...

  • Surviving historical Patagonian landscapes and climate: molecular insights from Galaxias maculatus 

    Zemlak, Tyler S., Evelyn M. Habit, Sandra J. Walde, Cecilia Carrea, et al. 2010. "Surviving historical Patagonian landscapes and climate: molecular insights from Galaxias maculatus." Bmc Evolutionary Biology 10: 67-67.
    Background: The dynamic geological and climatic histories of temperate South America have played important roles in shaping the contemporary distributions and genetic diversity of endemic freshwater species. We use ...