The Ecological Relationship Between a Rocky Mountain Threatened Species and a Great Plains Agricultural Pest
Authors(s): H. Robison and P. Brussard
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Publication Date: 0000-00-00
Type: annual report
Location:
Abstract: Objectives 1. To determine where army cutworm moths (Euxoa auxiliaria) (ACMs) originate. Pressures on ACMs subpopulations, either natural (eg weather patterns) or man-caused (eg pesticides), may affect moth recruitment and the numbers of adults reaching high elevation sites where they are a critical food source for the threatened Greater Yellowstone Ecosystem grizzly bear (Ursus actos horribilis). 2. To determine if ACMs harbor agricultural pesticide residues in their tissues. Resulting pesticide magnification in grizzly bears that forage heavily on moths may have detrimental physiological or developmental side effects. 3. To elucidate the affects of weather on ACM migration from Great Plains agricultural areas to ACM aggregation sites in the Rocky Mountains. 4. To determine whether ACMs from different Great Plains origins are interbreeding in high elevation sites prior to their return to agricultural areas. If ACM subpopulations do not interbreed, unfavorable conditions in specific Great Plains areas may impact moth numbers in high elevation. Findings and Status Ongoing research project.
Keywords: Grand Teton National Park, ecology, animal, insect, Insecta, entomology, moth, lepidoptera, cutworm moth, Euxoa auxiliaria, habitat, human activity, population, food, forage, mammal, bear, Ursidae, grizzly bear, Ursus arctos horribilis, Greater Yellowstone Ecosystem
| BIBLIOGRAPHY ID | 186 |
| REF TYPE | Report |
| AUTHORS | H. Robison and P. Brussard |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
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| DOC TITLE | The Ecological Relationship Between a Rocky Mountain Threatened Species and a Great Plains Agricultural Pest |
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| DOC TYPE | annual report |
| PUB VOLUME | 4273 |
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| KEYWORDS | Grand Teton National Park, ecology, animal, insect, Insecta, entomology, moth, lepidoptera, cutworm moth, Euxoa auxiliaria, habitat, human activity, population, food, forage, mammal, bear, Ursidae, grizzly bear, Ursus arctos horribilis, Greater Yellowstone Ecosystem |
| ABSTRACT | Objectives
1. To determine where army cutworm moths (Euxoa auxiliaria) (ACMs) originate. Pressures on ACMs subpopulations, either natural (eg weather patterns) or man-caused (eg pesticides), may affect moth recruitment and the numbers of adults reaching high elevation sites where they are a critical food source for the threatened Greater Yellowstone Ecosystem grizzly bear (Ursus actos horribilis).
2. To determine if ACMs harbor agricultural pesticide residues in their tissues. Resulting pesticide magnification in grizzly bears that forage heavily on moths may have detrimental physiological or developmental side effects.
3. To elucidate the affects of weather on ACM migration from Great Plains agricultural areas to ACM aggregation sites in the Rocky Mountains.
4. To determine whether ACMs from different Great Plains origins are interbreeding in high elevation sites prior to their return to agricultural areas. If ACM subpopulations do not interbreed, unfavorable conditions in specific Great Plains areas may impact moth numbers in high elevation.
Findings and Status
Ongoing research project. |
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| URLADDRESS | http://science.nature.nps.gov/servlet/Prmt_ReportSearchView?REPORT_ID=4273 |
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Posted on
Sun, July 31, 2011
by Beringia South