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: Population growth of Monellia caryella, Monelliopsis pecanis, and Melanocallis caryaefoliae and factors affecting seasonal abundance of Monellia caryella at College Station, Texas
  name:
    name part: Liao, Huey-Tarng
    role:
      role term: creator
  name:
    name part: Gilstrap, Frank E.
    role:
      role term: degree committee member.
  name:
    name part: Harris, Marvin K.
    role:
      role term: degree supervisor.
  name:
    name part: Matis, James B.
    role:
      role term: degree committee member.
  name:
    name part: Storey, J. Benton
    role:
      role term: degree committee member.
  name:
    name part: Van Cleave, Horace W.
    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: 1984
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xvi, 140 leaves : illustrations ; 29 cm
  abstract: Field studies were conducted at College Station, Texas in 1982 and 1983 to examine population dynamics of 3 species of pecan aphids. The results indicate that pecan, Carya illinoensis (Wangenheim) K. Koch supports higher densities of Monelliopsis pecanis Bissell for a longer period compared to Monellia caryella (Fitch) and Melanocallis caryaefoliae (Davis). M. caryaefoliae caused the highest defoliation rate and was followed by M. pecanis and M. caryella. Despite the low defoliation rate, M. caryella populations were not sustained on foliage exposed to severe infestations of this aphid. Due to the high defoliation rate, M. caryaefoliae populations diminished in a short period after reaching peak densities. Increase rate of population of M. caryella and carrying capacity of pecan for this aphid were observed to decrease as the pecan growing season progressed. Field surveys and exclusion studies indicated that natural enemies, especially spiders and lacewings, exerted a substantial impact on M. caryella populations. Fluctuations of M. caryella populations appeared to result from combined actions of plant host physiology, natural enemies, prior occurrence of aphids, and weather conditions.
  note: "Major subject: Entomology."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. in Philosophy Texas A & M University 1984
  note: Includes bibliographical references (leaves 132-139).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Aphids
    geographic: Texas
    geographic: College Station
  subject:
    topic: Entomology
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-576450
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-576450
  record info:
    record content source: TXA
    record creation date: 851019
    record change date: 20220103135207.0
    record identifier: in00000565018
    language of cataloging:
      language term: eng