rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Natural control of Liriomyza trifolii (Diptera: Agromyzidae) on fresh market green peppers
  name:
    name part: Chandler, L. D. (Laurence D.)
    role:
      role term: creator
  name:
    name part: Browning, Harold W.
    role:
      role term: degree committee member.
  name:
    name part: Cate, James R.
    role:
      role term: degree committee member.
  name:
    name part: Chandler, James M.
    role:
      role term: degree committee member.
  name:
    name part: Gilstrap, Frank E.
    role:
      role term: degree supervisor.
  name:
    name part: Matis, James H.
    role:
      role term: degree committee member.
  name:
    name part: Teetes, George L.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1986
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xii, 135 leaves : illustrations ; 29 cm
  abstract: The spatial distribution of Liriomyza trifolii (Burgess) and its associated hymenopterous parasite complex was determined in field grown bell peppers at Weslaco, TX. L. trifolii larvae were most numerous during the first weeks of plant growth on cotyledons and thereafter on mature leaves. After plants reached 75 mm in height (>12 leaves per plant), larvae could be most reliably sampled on mature leaves from the middle 1/3 of the plant. Dispersion indices indicated that L. trifolii larvae were slightly aggregated in the field. Correspondingly, parasitized L. trifolii larvae were randomly distributed within individual plants and amongst plants in the field indicating a random parasite oviposition behavior. L. trifolii larval densities within the field increased slowly during a growing season with some changes in stability of age distribution through time also noted. The loss of leaf area from mining accumulated over time appeared to be the major cause of damage by L. trifolii. Laboratory studies at 24°C showed that mean developmental time from oviposition to adulthood was 20 days. High levels of unexplained mortality occurred in egg and pupal stages. The efficacy of L. trifolii parasites in field grown bell peppers was determined using mechanical exclusion techniques and life table analyses. Parasitism of L. trifolii larvae by seven parasite species was a significant factor in limiting density increases. However, unexplained L. trifolii larval and pupal mortality was equally important. In the absence of parasitism, L. trifolii parasite induced mortality was partially replaced by unexplained larval and pupal mortality. The lack of L. trifolii adult and egg mortality data left questions as to the exact role of all mortality agents. No one mortality factor regulated L. trifolii density in the systems studied.
  note: "Major subject: Entomology."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. Texas A & M University 1986
  note: Includes bibliographical references (leaves 126-134).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Liriomyza
    topic: Biological control
    geographic: Rio Grande Valley (Colo.-Mexico and Tex.)
  subject:
    topic: Peppers
    topic: Disease and pest resistance
    geographic: Rio Grande Valley (Colo.-Mexico and Tex.)
  subject:
    topic: Peppers
    topic: Diseases and pests
    geographic: Rio Grande Valley (Colo.-Mexico and Tex.)
  subject:
    topic: Major entomology
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-24014
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-24014
  record info:
    record content source: TXA
    record creation date: 880608
    record change date: 20220104090740.0
    record identifier: in00000017879
    language of cataloging:
      language term: eng