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: Comparative toxicities of two common agricultural chemicals to toads
  name:
    name part: Cowman, Deborah Fay
    name part: 1954-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1997
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: x, 50 leaves ; 28 cm.
  abstract: 1833, and B. velatus Bragg & Sanders, 1951, in relation to
  abstract: Amphibians are limited in their movements compared to other
  abstract: analysis. Trifluralin showed differences from controls only
  abstract: at 1 hr and 1 d post-dosing for brain cholinesterase (ChE)
  abstract: at 6 hr. Behavioral tests between species, with the
  abstract: between baseline levels of brain ChE activity between the two
  abstract: between sexes showed no significant differences. juveniles
  abstract: brain ChE after carbofuran exposure. There were no
  abstract: carbofuran concentration of approximately 5.5% of the highest
  abstract: contraction, and mass increase. Animals were also tested
  abstract: differences in brain ChE responses between animals exposed to
  abstract: entire local populations destroyed by agricultural
  abstract: exception of hyperactivity, revealed differences in
  abstract: exposed to carbofuran in all behavioral categories. A
  abstract: for 6 hr to carbofuran or trifluralin. Toads were checked
  abstract: for several months to observe feeding behavior and general
  abstract: geographic range, however, the cause is unknown. Tests
  abstract: health. Animals were exposed dermally by ventral absorption
  abstract: information about two toad species, Bufo valliceps Wiegmann,
  abstract: mean brain ChE levels at 1 hr. There was a difference
  abstract: of righting reflex in 30% of B. valliceps and 60% B velatus
  abstract: pesticides. This study provides basic toxicological
  abstract: pre-and post-dosing for feeding response. Toads were frozen
  abstract: prior to the exposure and at 2, 4, and 6 hr for loss of
  abstract: recommended field application rate (2.5 gal/acre) caused loss
  abstract: righting reflex and hind-leg retraction, hyperactivity, iris
  abstract: sensitive. This coincides with the recent reduction in its
  abstract: sensitivities to carbofuran with B. velatus being more
  abstract: showed differences from the adults in iris contraction and
  abstract: soil. Toads of both species were collected at a site in East
  abstract: species, with B. valliceps having higher normal levels. B.
  abstract: terrestrial vertebrates and are therefore at risk of having
  abstract: Texas in 1993, 1994, and 1995, and maintained in captivity
  abstract: There were significant differences between controls and toads
  abstract: trifluralin and their controls.
  abstract: trifluralin, that are widely used and applied directly to the
  abstract: two major agricultural pesticides, carbofuran and
  abstract: valliceps showed 41.2% and B. velatus 46.5% inhibition of
  abstract: within the post-feeding test; dosed animals did not eat.
  note: by Deborah Fay Cowman.
  note: "Major subject: Wildlife and Fisheries Sciences".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 1997.
  note: Includes bibliographical references: pages 36-49.
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-1997-THESIS-C69
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-1997-THESIS-C69
  record info:
    record content source: TXA
    record creation date: 980210
    record change date: 20220103134454.0
    record identifier: in00001398204