Plant-Derived Smoke Enhances Germination of the Invasive Common Milkweed (Asclepias syriaca L.)
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Effects of Cultivar and Insecticide Choice on Oleander Aphid Management and Arthropod Dynamics on Asclepias Species1
Performance of oleander aphid (Aphis nerii Boyer de Fonscolmbe) and large milkweed bug (Oncopeltus fasciatus Dallas) on 21 species of Asclepias was evaluated in a two-year field study. Season-long pest and beneficial insect population growth was monitored. Plant quality ratings also were obtained. Relative numbers of Monarch butterfly (Danaus plexippus (Linnaeus)) larvae were also recorded. All...
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defence of common milkweed Asclepias syriaca to two lepidopteran herbivores Robin A. Bingham* and Anurag A. Agrawal Department of Natural and Environmental Sciences, Western State College of Colorado, Gunnison, CO 81231, USA; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA; and Department of Entomology, and Center for a Sustainable Future, Cornell Unive...
متن کاملTests of the coupled expression of latex and cardenolide plant defense in common milkweed (Asclepias syriaca)
The coexpression of plant resistance traits suggests the hypothesis that they may have complementary functions in defense against herbivory. To address the extent to which defensive traits are necessarily coupled in plants grown under various conditions, we focused on latex and cardenolides, two potent defenses of milkweeds. We measured defenses across ontogenetic stages, different biotic and a...
متن کاملNatural selection on common milkweed (Asclepias syriaca) by a community of specialized insect herbivores
Hypothesis: Genetic variation in plant defence structures a community of herbivores and ultimately mediates co-evolution. Organisms: Common milkweed (Asclepias syriaca) and five natural insect herbivores (seed bug, leaf mining fly, monarch caterpillar and two beetles). Methods: Quantitative genetic field experiment over 2 years, genetic selection analyses, and measurement of five defensive trai...
متن کاملIsolation and characterization of microsatellite loci in the common milkweed, Asclepias syriaca (Apocynaceae).
PREMISE OF THE STUDY Microsatellite primers were developed for the common milkweed, Asclepias syriaca L., to assist in genet identification and the analysis of spatial genetic structure. METHODS AND RESULTS Using an enrichment cloning protocol, eight microsatellite loci were isolated and characterized in a Michigan population of A. syriaca. The primers amplified di- and trinucleotide repeats ...
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