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Showing 1 to 20 of 54 for “"flea"”.
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From the flea market
… thesis is about marketplaces in general, and one flea · market in particular. It explores some of the physical potentials the market has for generating a building and some of the social implications of a controversy which it prompted. The focus of this exploration is the recently evicted Canal …
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'Flea-ting' Markets: Commodities, Consumption and Value in a Flea Market in Singapore
… in studies of consumption in Singapore. Flea markets are one such informal retail setting that thrive in Singapore despite the proliferation of glitzy shopping malls scattered around every corner of the city. This ethnographic study explores one such key field site?a flea market selling …
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Host plants of the tobacco flea beetle, Epitrix parvula F.
A study of the host plants of the tobacco flea beetle was made in Pittsylvania County from April 1 to September 23, 1939. The work was divided into field observations, rearing experiments end population studies. From field observations made throughout the season it was found that this insect fed …
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Flea Beetle Populations and Their Management on Vegetables in Virginia
Flea beetles (FB), (Coleoptera: Chrysomelidae), are common pests of cabbage and eggplant, but little is known about the FB populations in Virginia, their impact on yield, or the most effective control methods. This research investigates the FB populations and impact of their feeding injury on …
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Genetic variation in the European rabbit and rabbit flea in the British Isles
… as a whole.<br/><br/>RAPD analysis of 4 flea populations gave 4 polymorphic fragments from 19 discovered. This resulted in larger genetic distances, averaging 0.088 between subpopulations. However parsimony analysis indicated the populations were less genetically distinct than analysis of …
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The ecology of the lucerne flea, Sminthurus viridis, in the South-Auckland/Waikato area
Lucerne flea, Sminthurus viridis L., is an annual pest in pastures in the Auckland/Waikato area. It damages legumes, particularly white clover, from late autumn until early summer, with a peak in infestation in spring. No research into the seasonality of the lucerne flea (LF) has been done in New …
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Flea and Louse Infestations of Cotton Rats (Sigmodon Hispidus) In The Southeastern United States
… of parasitism by sucking lice (Anoplura) and fleas (Siphonaptera) of cotton rats were recorded at all sites. The geographical distribution of S. hispidus and its main louse and flea ectoparasites range from the neotropical region to the southeastern USA. It was hypothesized that the abundance …
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The biology of the tobacco flea beetle in Virginia: Epitrix parvula (F.) (Coleoptera: Chrysomelidae)
The tobacco flea beetle is one of the major insect pests of tobacco in Virginia. The adult injures the plants by eating small irregular holes in the leaves and the larva by feeding on the roots of the plants. The tobacco flea beetle hibernates in the adult stage in leaves and trash around the edge …
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Understanding Red Headed Flea Beetle Biology to Inform Sustainable Pest Management Practices in Virginia Nurseries
… (F.) (Coleoptera: Chrysomelidae), the red headed flea beetle (RHFB), is a ubiquitous pest of ornamental nursery crops in the eastern United States. Defoliation by adults renders plants unsaleable. Control costs and economic losses from injured plants have become a top concern among Virginia …
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Economic injury levels and feeding studies for the potato flea beetle, Epitrix cucumeris (Harris), in Manitoba
… in cages in field plots, and densities of potato flea beetles, Epitrix cucumeris (Harris), and Colorado potato beetles, Leptinotarsa decemlineata (Say), were introduced in different multiples of naturally occurring field densities. Colorado potato beetles were introduced only in the early part of …
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The Nutrition of The Larva of The Oriental Rat Flea, Xenopsylla Cheopis (Rothschild) With Additional Notes on Its Bionomics
Made available in DSpace on 2014-12-05T21:34:06Z (GMT). No. of bitstreams: 1 6202947.pdf: 4924091 bytes, checksum: 84210d2f572e5f3fd55aaa866f0c103a (MD5) Previous issue date: 1962
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Arthropod and vertebrate determinants for horizontal transmission of Rickettsia felis
… bacterium predominantly described in the cat flea, Ctenocephalides felis. Since first described in 1990 in a commercial cat flea colony in the United States, R. felis has been detected in numerous arthropod species in 28 countries around the world. Additionally, as the etiologic agent of …
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Aspects of the biology, behavior, bionomics, and control of immature stages of the cat flea Ctenocephalides felis felis (Bouche) (Siphonaptera: Pulicidae) in the domiciliary environment
The larval stage of the cat flea, Ctenocephalides felis felis (Bouche), was found to exhibit behaviors that were conducive to its security in carpet. Larvae exhibited positive geotactic, and negative phototactic behaviors. This resulted in the larvae spending greater than 80% of their time at the …
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Swap meets, flea markets, and open-air public markets : a community and economic development model for low-income and underserved neighborhoods
Swap meets, a type of public marketplace, are sites that provide low income and minority communities a place to buy and sell affordable merchandise, as well as create a regular meeting space. In particular, open-air swap meets are places where many social networks form between individuals of …
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Parasite-host interactions in an arctic goose colony
… to 2004. The nest parasite, identified as the flea Ceratophyllus vagabundus vagabundus, was associated with goose eggs covered with spots of blood. The proportion of goose egg-shells covered by blood was positively correlated with flea abundance in the nest. This relationship allowed the use …
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FLEAS OF THE AMERICAN PIKA: DIVERSITY AND BIOGEOGRAPHY IN NORTH AMERICA’S INTERMOUNTAIN WEST
… whether or not patterns in diversity of fleas associated with pikas suggest a history that is more similar to that of the host or that of the endoparasites. I characterized the flea diversity and distribution within American pikas based on a sample of 837 flea specimens collected from 34 …
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The Thoracic Musculature of The Indian Rat Flea, Xenopsylla Cheopis (Rothschild) 1903, Its Function and Implications in The Phylogeny of The Order Siphonaptera
Made available in DSpace on 2014-12-05T21:34:00Z (GMT). No. of bitstreams: 1 5904527.pdf: 4426116 bytes, checksum: 39c05a21182d93e7e531ccd5ddf499ae (MD5) Previous issue date: 1959
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Field studies on the ringspot disease of Burley tobacco in Washington County, Virginia
… diseased to healthy plants by the common tobacco flea beetle (Epitrix parvula) although they lived and multiplied on tobacco plants within the cages. 3. The cucumber flea beetle (Epitrix cucumeris), leaf hopper (Empoasa fabea), Aphis (Macrosiphum solanifolii) and the lightning bug (Photinus …
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In Vivo Gene Expression Profiling of the Plague Bacillus, Yersinia Pestis
… agent of plague, can be transmitted by infected-flea bite or inhaled aerosol. Both routes of infection have a high mortality rate, and pneumonic infections of Yersinia pestis represent a significant fear as a tool of bioterrorism. Understanding the transcriptional program of this pathogen during …
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