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  • Article
    Chen Y, Lu Z, Li Q, Hoffmann BD, Zhang W.
    PLoS One. 2014;9(6):e98975.
    This study investigated the effects of ant attendance on the parasitoid community and parasitism of lac insect Kerria yunnanensis aggregations in Yunnan province, China. We manipulated ant attendance to establish three treatments: (1) ant exclusion; (2) low ant attendance by several ant species; and (3) high ant attendance by Crematogaster macaoensis. Five parasitoid species were collected, with two species contributing 82.7 and 13.2% of total abundance respectively. Total parasitoid abundance was lowest in the February sample when K. yunnanensis was in its younger life stage, being significantly lower in the ant exclusion treatment. In April, all three treatments had significantly different parasitoid abundances, being highest in the ant exclusion treatment and the lowest in the high ant attendance treatment. When ants were present, there were strong negative relationships between total parasitoid abundance and ant abundance, with the relationships being dependent upon the ant species composition and abundance. The patterns of total parasitoid abundance were driven by the two most abundant parasitoid species. Parasitoid species richness did not differ among treatments or between sample times, however, multivariate analysis confirmed that overall parasitoid community structure differed significantly among treatments and between sample times, with the high ant attendance treatment differing most from the other two treatments. Interestingly the absence of ants did not result in increased parasitism from four of the five parasitoids. Ants in lac insect farming systems have a clear role for agricultural pest management. A full understanding of the asymmetric abilities of ants to influence parasitoid communities, and affect parasitism of hosts will require further experimental manipulation to assess the relative roles of 1) the abundance of each individual ant species on parasitoid access to hosts, 2) competition among parasitoids, and 3) the interaction between the first two factors.
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  • Book
    Jay B. Brodsky, John G. Brock-Utne, C. Philip Larson, Jr.
    Summary: "From 1972-1982 C. Philip Larson Jr. was Chair of the Departmet of Anesthesiology at the Stanford School of Medicine. Under his leadership the Department underwent many changes that influenced the institution long after that decade ended. Former faculty members and residents contributed details about their experiences during that era, and about their careers after leaving Stanford. Many have achieved great success in academic or private anesthesia practice, and in other medical and scientific areas. Some became administrators, others have been prominent in state and national scientific and political organizations, or inventors, entrepreneurs, or leaders in industry. After reading their stories, the reader will agree that the physicians working during the 'Larson Years' were an exceptionally talented group."--from back cover.
    Print
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    Items
    Medical History Center: By appointment only.
    2023
    RD80.6 .B76 2023
    1