Acute, chronic and reproductive effects of petroleum and two petroleum substitutes on the large milkweed bug, Oncopeltus fasciatus

Technical Report · Thu Dec 01 00:00:00 EST 1983

OSTI ID:5464164

Merchant, E R; Walton, B T

Effects of petroleum and two synthetic oils on mortality and reproduction of the large milkweed bug, Oncopeltus fasciatus (Dallas), were compared. Reproduction was investigated because of its importance in the maintenance of population levels and the sensitivity of the reproductive system to toxicants. Adult milkweed bugs were dosed topically with the test oils to measure acute toxicity. Chronic toxicity was determined by mean survival after chronic exposure, starting with the fifth instar. The ability of sublethal levels of the test oils to affect reproduction was measured by the number of eggs laid and their percent hatch. The two synthetic oils were found to be more acutely and chronically toxic than petroleum. Egg production was not affected by petroleum but was reduced approximately 20% by sublethal levels of both synthetic oils. Egg viability was not affected.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5464164
• Report Number(s): ORNL/TM-8881; ON: DE84005078
• Resource Relation: Other Information: Thesis. Submitted by E.R. Merchant to Univ. of Tennessee, Knoxville
• Country of Publication: United States
• Language: English

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