Moths trapped in Alaska with feeding attractant lures and the seasonal flight patterns of potential agricultural pests

2007 ◽  
Vol 139 (2) ◽  
pp. 278-291 ◽  
Author(s):  
Peter J. Landolt ◽  
Alberto Pantoja ◽  
Aaron Hagerty ◽  
Lars Crabo ◽  
Daryl Green
Keyword(s):  
Acetic Acid ◽  
Methyl Salicylate ◽  
Late Summer ◽  
Agricultural Pests ◽  
Large Numbers ◽  
Euxoa Ochrogaster ◽  
Noctuid Species ◽  
The One ◽  
Redbacked Cutworm ◽  
Feeding Attractant

AbstractTraps baited with two types of chemical feeding attractants yielded 97 species of macrolepidoptera at three areas in Alaska (Fairbanks, Delta Junction, and Palmer). These were 16 geometrid, 1 thyatirid, and 76 noctuid moth species and 4 species of nymphalid butterflies. Potential crop pests trapped included Apamea devastator (Brace) (glassy cutworm), Xestia c-nigrum L. (spotted cutworm), Xestia smithii (Snellen) (Smith's dart), Euxoa ochrogaster (Guenée) (redbacked cutworm), and Discestra trifolii (Hufnagel) (clover cutworm). The clover cutworm was captured early in the season (May into June), while Smith's dart, glassy cutworm, spotted cutworm, and redbacked cutworm were captured in traps in mid to late summer. Many more species and greater numbers of moths were captured in traps baited with acetic acid and 3-methyl-1-butanol than in traps baited with a multicomponent floral lure (phenylacetaldehyde, methyl salicylate, methyl-2-methoxy benzoate, and β-myrcene). However, most of the geometrid moths captured (12 of 16 species) were in floral lure traps, while one species of Hadeninae (Noctuidae) and both species of Plusiinae (Noctuidae) were trapped exclusively in floral lure traps. The one thyatirid, both Catocalinae noctuid species, and most Amphipyrinae, Cuculliinae, Hadeninae, and Noctuinae noctuid species were captured in traps baited with acetic acid and 3-methyl-1-butanol. In addition, large numbers of bumblebees were captured in traps baited with the floral lure, while large numbers of yellowjackets were captured in traps baited with acetic acid and 3-methyl-1-butanol.

Interactions between the land snails Theba pisana and Cernuella virgata in the laboratory

2020 ◽  
Author(s):  
Geoff H Baker
Keyword(s):  
Laboratory Experiments ◽  
Distribution Patterns ◽  
Land Snails ◽  
Snail Species ◽  
Agricultural Pests ◽  
Large Numbers ◽  
Small Scales ◽  
Novel Method ◽  
Theba Pisana ◽  
Inhibitory Components

ABSTRACT Two Mediterranean snails, Theba pisana and Cernuella virgata, are agricultural pests in southern Australia. The two species are rarely found together in large numbers in the field, at small scales (<1 m2). In laboratory experiments, the presence of T. pisana reduced the survival of C. virgata, but only when food (carrot + lettuce) was provided. When C. virgata was exposed to only the mucus trails and faeces of T. pisana, produced while feeding on lettuce, both the survival and activity of C. virgata were reduced. When carrot was substituted for lettuce, there was less effect. In addition, when C. virgata was exposed to T. pisana’s faeces only, derived from access to a mix of lettuce and carrot, there was no effect on C. virgata’s survival. The observed reductions in the survival of C. virgata were stronger in autumn (the breeding season for both snail species) compared with spring. Inhibitory components within the mucus trails of T. pisana may (1) help explain the observed distribution patterns of the two species at small scales in the field and (2) provide a novel method for control of pest populations of C. virgata, in some situations.

scholarly journals XXIII.—On the Disruptive Discharge of Electricity: An Experimental Thesis for the Degree of Doctor of Science, Department A

1878 ◽  
Vol 28 (2) ◽  
pp. 633-671 ◽  
Author(s):  
Alexander Macfarlane
Keyword(s):  
Copper Wire ◽  
Late Summer ◽  
The Other ◽  
Straight Line ◽  
Summer Session ◽  
The Difference ◽  
A Chain ◽  
The One ◽  
Metallic Parts ◽  
The University

The experiments to which I shall refer were carried out in the physical laboratory of the University during the late summer session. I was ably assisted in conducting the experiments by three students of the laboratory,—Messrs H. A. Salvesen, G. M. Connor, and D. E. Stewart. The method which was used of measuring the difference of potential required to produce a disruptive discharge of electricity under given conditions, is that described in a paper communicated to the Royal Society of Edinburgh in 1876 in the names of Mr J. A. Paton, M. A., and myself, and was suggested to me by Professor Tait as a means of attacking the experimental problems mentioned below.The above sketch which I took of the apparatus in situ may facilitate tha description of the method. The receiver of an air-pump, having a rod capable of being moved air-tight up and down through the neck, was attached to one of the conductors of a Holtz machine in such a manner that the conductor of the machine and the rod formed one conducting system. Projecting from the bottom of the receiver was a short metallic rod, forming one conductor with the metallic parts of the air-pump, and by means of a chain with the uninsulated conductor of the Holtz machine. Brass balls and discs of various sizes were made to order, capable of being screwed on to the ends of the rods. On the table, and at a distance of about six feet from the receiver, was a stand supporting two insulated brass balls, the one fixed, the other having one degree of freedom, viz., of moving in a straight line in the plane of the table. The fixed insulated ball A was made one conductor with the insulated conductor of the Holtz and the rod of the receiver, by means of a copper wire insulated with gutta percha, having one end stuck firmly into a hole in the collar of the receiver, and having the other fitted in between the glass stem and the hollow in the ball, by which it fitted on to the stem tightly. A thin wire similarly fitted in between the ball B and its insulating stem connected the ball with the insulated half ring of a divided ring reflecting electrometer.

scholarly journals Women (and Men) on the Move: Scots in the English North c. 1440

2018 ◽  
Vol 57 (1) ◽  
pp. 1-28 ◽  
Author(s):  
Judith M. Bennett
Keyword(s):  
Large Numbers ◽  
The One

AbstractAlien subsidies suggest that many men and few women immigrated to England between 1440 and 1487. This article examines the one exception to this pattern: the large numbers of Scotswomen assessed as aliens in Cumberland, Westmorland, and Northumberland in 1440. It considers why so many women are found in these particular returns, what we can know about them, and how this knowledge might change our histories of women, labor, and mobility in both Scotland and England.

First report of redbacked cutworm damage to cow cockle [Vaccaria hispanica (Mill.) Rauschert], a potential new crop for western Canada

2011 ◽  
Vol 91 (2) ◽  
pp. 425-428 ◽  
Author(s):  
Christian Willenborg ◽  
Lloyd Dosdall
Keyword(s):  
Linear Relationship ◽  
Seed Yield ◽  
Seed Weight ◽  
Insect Pest ◽  
Western Canada ◽  
First Report ◽  
Euxoa Ochrogaster ◽  
Redbacked Cutworm ◽  
New Crop ◽  
Strong Linear Relationship

Willenborg, C. J. and Dosdall, L. M. 2011. First report of redbacked cutworm damage to cow cockle [ Vaccaria hispanica(Mill.) Rauschert], a potential new crop for western Canada. Can. J. Plant Sci. 91: 425–428. We report the effects of redbacked cutworm Euxoa ochrogaster (Guenée) on cow cockle [Vaccaria hispanica (Mill.) Rauschert] plant height, seed yield, and 1000-seed weight (TSW). Euxoa ochrogaster damage to plots varied considerably among genotypes, with some genotypes exhibiting <10% damage and others >45%. Seed yield also varied significantly among genotypes and exhibited a strong linear relationship with the extent of E. ochrogaster damage. This is the first known report of any insect pest feeding on cow cockle. Results suggest that E. ochrogaster has the potential to cause significant losses in cow cockle crops.

scholarly journals Rare Earth Elements Enhanced the Oxidation Resistance of Mo-Si-Based Alloys for High Temperature Application: A Review

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1144
Author(s):  
Laihao Yu ◽  
Yingyi Zhang ◽  
Tao Fu ◽  
Jie Wang ◽  
Kunkun Cui ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Rare Earth Elements ◽  
Oxidation Resistance ◽  
Oxidation Behavior ◽  
Strengthening Mechanism ◽  
Advanced Materials ◽  
Performance Requirements ◽  
Large Numbers ◽  
The One

Traditional refractory materials such as nickel-based superalloys have been gradually unable to meet the performance requirements of advanced materials. The Mo-Si-based alloy, as a new type of high temperature structural material, has entered the vision of researchers due to its charming high temperature performance characteristics. However, its easy oxidation and even “pesting oxidation” at medium temperatures limit its further applications. In order to solve this problem, researchers have conducted large numbers of experiments and made breakthrough achievements. Based on these research results, the effects of rare earth elements like La, Hf, Ce and Y on the microstructure and oxidation behavior of Mo-Si-based alloys were systematically reviewed in the current work. Meanwhile, this paper also provided an analysis about the strengthening mechanism of rare earth elements on the oxidation behavior for Mo-Si-based alloys after discussing the oxidation process. It is shown that adding rare earth elements, on the one hand, can optimize the microstructure of the alloy, thus promoting the rapid formation of protective SiO2 scale. On the other hand, it can act as a diffusion barrier by producing stable rare earth oxides or additional protective films, which significantly enhances the oxidation resistance of the alloy. Furthermore, the research focus about the oxidation protection of Mo-Si-based alloys in the future was prospected to expand the application field.

Biotechnology education and societal demands: challenges faced by biotechnology and human resources development

2010 ◽  
Vol 6 (1) ◽  
pp. 72-90 ◽  
Author(s):  
B. Pandu Ranga Narasimharao
Keyword(s):  
Developing Countries ◽  
Human Resource Development ◽  
Knowledge Integration ◽  
Knowledge Society ◽  
Integrated Approach ◽  
Content Type ◽  
Large Numbers ◽  
Moral Problems ◽  
Educational Guidance ◽  
The One

PurposeThe purpose of this paper is to highlight the social responsibility of universities and other higher education institutes in meeting the challenges faced by biotechnology and human resource development.Design/methodology/approachThe challenges faced by biotechnology are discussed under three broad heads – exponential growth in biotechnology knowledge, commercialization and industrialization of the biotechnologies, and knowledge integration by various stakeholders of biotechnology.FindingsThe emergence of the knowledge society warrants that universities ensure that overall work of the academy is more relevant to the nation's most pressing civic, social, economic and moral problems and that there is an urgent need to have a fresh look at the approaches followed in biotechnology education and training, particularly with reference to developing countries. It is necessary to see how the different players (industries, university, society, government) concerned with biotechnology can act in unison and in a mutually beneficial way. An integrated approach to the field of biotechnology combining different subject areas is necessary and the courses and approach should reflect this.Originality/valueCareer counselors and those engaged in educational guidance are flooded with inquiries about biotechnology courses and their scope. It is observed, on the one hand, that the biotechnology field is starved of talent and, on the other hand, that there are several universities/colleges, particularly in developing countries, producing large numbers of unemployable graduates. Some serious thinking needs to be done urgently to overcome this problem.

scholarly journals Frugal innovation: doing more with less for more

2017 ◽  
Vol 375 (2095) ◽  
pp. 20160372 ◽  
Author(s):  
Jaideep Prabhu
Keyword(s):  
Global Economy ◽  
Small Firms ◽  
The Other ◽  
Market Mechanisms ◽  
Frugal Innovation ◽  
Developed Economies ◽  
Large Numbers ◽  
Demand Reduction ◽  
The One

The global economy will face significant challenges over the next few decades. On the one hand, it must meet the needs of 7 billion consumers (growing to 9 billion by 2050), including the currently unmet basic needs of large numbers in developing countries in areas such as food, energy, housing and health. On the other hand, it must achieve this growth without exceeding the resources available on the planet or causing environmental devastation. This paper argues that such change is possible through a systemic shift to a frugal economy that involves radical, frugal innovation across sectors. Such a transformation will involve the participation of large and small firms, consumers and governments alike. The paper introduces the notion of frugal innovation—the creation of faster, better and cheaper solutions for more people that employ minimal resources—and discusses strategies and examples of such change already taking place in core sectors like manufacturing, food, automotive and energy in developing and developed economies. It also outlines the role of the interaction between large and small firms as well as between firms and consumers in making change possible, as well as the role of governments in driving change where market mechanisms alone will not suffice. This article is part of the themed issue ‘Material demand reduction’.

17 December 1996: Six ICRC delegates assassinated in Chechnya

1997 ◽  
Vol 37 (317) ◽  
pp. 140-142 ◽  
Author(s):  
François Bugnion
Keyword(s):  
Late Summer ◽  
International Committee ◽  
Red Cross ◽  
Field Hospital ◽  
Large Numbers

In the early hours of 17 December 1996, six delegates of the International Committee of the Red Cross were assassinated in a brutal attack by gunmen at the ICRC hospital in Novye Atagi, near Grozny.In late summer 1996, the ICRC had decided to open a field hospital in Chechnya because the main hospitals in Grozny had been seriously damaged, thus leaving large numbers of war-wounded without proper care.

scholarly journals Molecular Mechanisms Underlying the Link between Diet and DNA Methylation

2018 ◽  
Vol 19 (12) ◽  
pp. 4055 ◽  
Author(s):  
Fatma Zehra Kadayifci ◽  
Shasha Zheng ◽  
Yuan-Xiang Pan
Keyword(s):  
Gene Expression ◽  
Dna Methylation ◽  
Molecular Mechanisms ◽  
Dna Demethylation ◽  
Direct Role ◽  
Large Numbers ◽  
Modifiable Factors ◽  
Activity Of Enzymes ◽  
Biochemical Mechanisms ◽  
The One

DNA methylation is a vital modification process in the control of genetic information, which contributes to the epigenetics by regulating gene expression without changing the DNA sequence. Abnormal DNA methylation—both hypomethylation and hypermethylation—has been associated with improper gene expression, leading to several disorders. Two types of risk factors can alter the epigenetic regulation of methylation pathways: genetic factors and modifiable factors. Nutrition is one of the strongest modifiable factors, which plays a direct role in DNA methylation pathways. Large numbers of studies have investigated the effects of nutrition on DNA methylation pathways, but relatively few have focused on the biochemical mechanisms. Understanding the biological mechanisms is essential for clarifying how nutrients function in epigenetics. It is believed that nutrition affects the epigenetic regulations of DNA methylation in several possible epigenetic pathways: mainly, by altering the substrates and cofactors that are necessary for proper DNA methylation; additionally, by changing the activity of enzymes regulating the one-carbon cycle; and, lastly, through there being an epigenetic role in several possible mechanisms related to DNA demethylation activity. The aim of this article is to review the potential underlying biochemical mechanisms that are related to diet modifications in DNA methylation and demethylation.

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