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Showing 1 to 20 of 23 for “"Milkweed"”.
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Thermal Analysis of Milkweed Floss Using TG/FTIR
<p>The thermal analysis of milkweed and several individual commercial samples of .similar chemical composition has been carried out. By combining a two-stage thermal process. (pyrolysis-combustion) with TG-FTIR, it has been possible to identify the major organic volatile products during pyrolysis …
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The Regulation of Yolk Deposition in The Large Milkweed Bug Oncopeltus Fasciatus
Made available in DSpace on 2015-05-14T15:08:25Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7524339.PDF: 3901119 bytes, checksum: e51895a64f1b7cc809a71d8797c945bd (MD5) Previous issue date: 1975
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Studies on the Growth and Control of Common Milkweed (Asclepias Syriaca, L.)
Made available in DSpace on 2014-12-12T00:17:54Z (GMT). No. of bitstreams: 1 7317487.pdf: 3140595 bytes, checksum: d65f17db098c9b8243d9ff3e7a935937 (MD5) Previous issue date: 1972
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Landscape and Mechanistic Approaches to Describing Milkweed Habitat and Drought Tolerance and the Implications for Western Monarch Butterflies
… map floral habitat. We focused on detecting two milkweed species, narrowleaf milkweed (Asclepias fascicularis), and showy milkweed (Asclepias speciosa). These species are host plants for the declining monarch butterfly (Danaus plexippus). Utilizing our model, we quantified milkweed cover and …
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Male Influence on the Neuro-Endocrine Control of Egg Production in the Female Milkweed Bug, Oncopeltus fasciatus - Dallas
The reproductive activity of male and female milkweed bugs is characterized by repeated, prolonged copulations during the whole adult life. This investigation was conducted to determine whether mating has any effect on egg reproduction. Virgin females were maintained under the three following …
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A Histochemical and Autoradiographic Study of the Ovarioles of the Cockroach, Periplaneta Americana, and the Milkweed Bug, Oncopeltus Fasciatus
Made available in DSpace on 2014-12-10T18:13:43Z (GMT). No. of bitstreams: 1 7013556.pdf: 3039707 bytes, checksum: cdbf429be4e332271e6cd7060606453b (MD5) Previous issue date: 1969
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Population processes and patterns across scales
… monarch butterfly is caused by the scarcity of milkweed, as the milkweed decline has been shown to locally impact monarch population. The study concludes that the milkweed scarcity is not the cause of the continental monarch decline. An observation made at a microscopic scale cannot be …
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Butterfly / urbanism
… host plant on which its larvae depend—namely, milkweed. In fact, the loss of breeding habitat in the US, due to the use of herbicides and urban sprawl, together with the loss of overwintering habitat in Mexico, has caused the Eastern Monarch population to decrease dramatically during the past …
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The Cellular And Genetic Mechanisms Underlying Morphological Diversity Of Insects
… (house cricket) and <i>Oncopeltus fasciatus</i> (milkweed bug), two hemimetabolous insect species with a vast difference in the magnitude of the T3 leg enlargement. We found that while crickets exhibit an increasing trend in RMA, the situation is reversed in milkweed bugs. Interestingly, the …
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Pheromones, nectar, and computer vision: investigating large-scale patterns of chemodiversity.
… tissues. Using common garden experiments with milkweed flowers in Idaho and Arizona, I found that nectar chemistry is consistently distinct from leaf chemistry within and across species, with large numbers of nectar compounds not found in leaves, and the concentrations of the majority of shared …
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Processes determining plant species diversity in restored tallgrass prairie
… richness, grass-forb ratios, and abundance of milkweeds (an important forb assemblage) differ between restored and remnant prairies and found that remnants are more diverse, less grassy, and have considerably higher milkweed abundances. Within restored prairies, the common milkweed was the most …
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Effect of Temperature and Chemical Additives on the Efficacy of the Herbicides Glufosinate and Glyphosate in Weed Management of Liberty-Link and Roundup-Ready Soybeans
… as well as two perennial weeds: common milkweed and horsenettle were included in studies. Uptake, translocation, and metabolism of 14C-glufosinate + AMS or PA, were studied in the five weeds in order to determine the basis for their differential weed sensitivity to glufosinate, and the …
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Butterflies fly away: insect decline in California, USA
… in the Sacramento Valley (chapter 3A) and in milkweeds sold by retail stores nationwide (chapter 3B). In both studies, milkweed leaves were collected and sent to the Cornell core facility to be screened for pesticides. In chapter 3A, we detected 64 pesticides in milkweed leaf samples collected …
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Process design for the production of maleic acid hydrazide for weed control
… of briers, bermuda grass, johnson grass, milkweed, red pine, ragweed, and honey locust in the Blacksburg, Virginia, area from May to August, 1956. The yield of maleic acid hydrazide was increased from 42.6 to 67.0 per cent when the maleic anhydride excess was increased to 20 per cent in …
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The Potential Allelopathic Effect of Several Grass Species on Native Missouri Prairie Plant Species
… leachate. Indian grass root leachate inhibited milkweed shoot growth. Caucasian bluestem root leachate enhanced the total dry weight of the gray-headed coneflower. The data from these experiments suggest potential allelopathic activity in the grassland community.
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The pollination and scent ecology of selected Cape milkweeds (Apocynaceae: Asclepiadoideae)
Milkweeds (Asclepiadoideae, Apocynaceae) possess a complex floral morphology that has made them prime candidates for investigating the evolution of plant-pollinator relationships. In South Africa, the pollination ecology of this diverse group has largely been focused in the summer rainfall region. …
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Economic Aspects of Crop Pest Management and Monarch Conservation
… farmers to estimate their willingness to grow milkweed on their non-cropland for Monarch butterfly conservation for various remuneration rates. I also approximate intrinsic motivation of farmers from their actual conservation data using reverse regression, distance discriminant analysis and …
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The Development of Sustainable Internal Curing Agents Using Natural Hollow Fibres
… aims to investigate the use of locally available milkweed (MW) fibres, which possess a unique hollow structure, as internal curing agents for low-w/b Portland cement mixes. The study focused on examining the impact of different pre-treatment methods on the morphology, chemical composition, and …
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