Gypsy moth (Lepidoptera: Lymantriidae) consumption and utilization of northern red oak and white oak foliage exposed to simulated acid rain and ozone

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Environmental Entomology; (United States)

DOI:https://doi.org/10.1093/ee/22.3.669· OSTI ID:6444938

Cannon, Jr, W N ^[1]

---

1. Northeastern Forest Experiment Station, Delaware, OH (United States)

Two-year-old seedlings of white oak, Quercus alba L., and red oak, Q. rubra L., were exposed to ozone (O[sub 3]) fumigations in four continuously stirred tank reactor chambers in the greenhouse for 8 h/d, 3 d/wk for 6 wk. Fumigation treatments were charcoal-filtered air (CFA) and CFA + 0.15 ppm O[sub 3]. Two simulated rain treatments, pH 4.2 and pH 3.0, of-1.25 cm were applied once each week in rain-simulation chambers. Gypsy moth, Lymantria dispar (L.), third instars were allowed to feed on leaf disks from treated seedlings for 24 h. Leaf area consumed, food assimilated, weight gain, and relative growth rate (RGR) were examined. Overall, larvae fed white oak foliage consumed more foliage and gained more weight than those fed red oak foliage. Response to the fumigation and rain treatments was different for each oak species. On white oak foliage, larvae consumed significantly less foliage treated with CFA + pH 3.0 rain, but the lowest RGR occurred with the 0.15 ppm O[sub 3] + pH 4.2 rain treatment. The most food assimilated, greatest weight gain, and highest RGR occurred with the CFA + pH 4.2 rain control. Red oak foliage consumed was equivalent for all treatments, but foliage exposed to CFA + pH 3.0 rain resulted in more food assimilated, greater weight gain, and higher RGR for that species.

• OSTI ID: 6444938
• Journal Information: Environmental Entomology; (United States), Journal Name: Environmental Entomology; (United States) Vol. 22:3; ISSN 0046-225X; ISSN EVETBX
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ANIMALS
ARTHROPODS
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL EFFECTS
FOOD
GROWTH
INSECTS
INVERTEBRATES
LARVAE
LEAVES
LEPIDOPTERA
LYMANTRIA DISPAR
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MOTHS
OAKS
OZONE
PLANTS
RAIN
SIMULATION
TREES
WEIGHT