نتایج جستجو برای: aphis nerri
تعداد نتایج: 2037 فیلتر نتایج به سال:
Introduction The United States Department of Agriculture (USDA) Animal and Plant Inspection Service (APHIS) announced the first diagnosed case of PEDV in U.S. swine in Iowa on May 17, 2013. PEDV subsequently spread rapidly among the domestic swine herds throughout the United States. As of August 20, 2014, PEDV had been detected in 30 U.S. states affecting more than seven million pigs since the ...
The frequencies at which vegetative cells and spores of Clostridium botulinum strains 56A, 62A, 17409A, 25763A, 213B, B-aphis, and 169B formed colonies on agar media containing 0, 10(sup2), 10(sup3), and 10(sup4) IU of nisin per ml at 30(deg)C were determined. Strain 56A had the highest frequencies of nisin resistance, while strains 62A, 169B, and B-aphis had the lowest. For most strains, spore...
The gammaproteobacterium Serratia symbiotica is one of the major secondary symbionts found in aphids. Here, we report the draft genome sequence of S. symbiotica strain CWBI-2.3(T), previously isolated from the black bean aphid Aphis fabae. The 3.58-Mb genome sequence might provide new insights to understand the evolution of insect-microbe symbiosis.
Aphidiinae (Braconidae: Aphidiinae) is a subfamily of endoparasitic wasps specialized in parasitizing aphids. Although, to date, different methods have been used to measure parasitism level, obtaining an accurate estimate remains challenging due to several limiting factors. This study was set to: 1) Compare efficiency of conventional and molecular-based methods in estimating parasitism level of...
The livestock protection collar (LP Collar) i: one of the few technical innovation: developed over the past 20 years fog managing coyote depredation on livestock Invented by Roy McBride in 1970, the LF Collar was researched at length by the Denver Wildlife Research Center (DWRC; and several cooperators before being approved for use with Compound 1080 by the U. With this transfer, the LP collar ...
In response to a predator attack, many Aphidinae species release an alarm pheromone, which induces dispersal behavior in other individuals within the colony. The major component of this pheromone is the sesquiterpene (E)-β-farnesene (Eβf), but variations occur between aphid species. In the present work, we collected, identified, and quantified the alarm pheromone of Aphis craccivora Koch (Hemip...
Aphids are a worldwide pest and an important model in ecology and evolution. Little is known, however, about the genetic structure of their colonies at a microgeographic level. For example, it remains largely unknown whether most species form monoclonal or polyclonal colonies. Here, we present the first detailed study on levels of clonal mixing in a nonsocial facultative ant mutualist, the blac...
The Virginia Cooperative Coyote Control Program was created in 1990 to address increasing livestock losses to coyotes and the inability of producers to solve such problems themselves. The eastern coyote arrived in Virginia in the late 1970s or early 1980s. Lobbying efforts of agricultural groups, such as the Virginia Sheep Federation, helped create a cost-share program administered by the Virgi...
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