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Tesi sul tema "Insect pests"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Stacey, David Andrew. "Insect pests in a changing climate." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271618.

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2

Prosdocimi, E. M. "GUT-BACTERIA SYMBIOSIS IN INSECT PESTS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/252503.

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Abstract (sommario):

Insects are one of the most fascinating taxa on Earth: their diversity, diffusion, colonization of different niches are unparalleled in the animal kingdom. Besides, they have a remarkable impact on human life: they are parasites for people, animals and crops, vectors of diseases, pollinators, and even breeding animals (e.g. honeybees, silkworms). This extraordinary evolutionary success and diversification is partially due to the symbiotic relationships that insects have with a wide range of bacteria. These symbionts can be divided into primary, secondary symbionts and gut bacteria. Primary sym

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3

Jensen, Mari N. "Designer Toxins Kill Bt- Resistant Insect Pests." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2007. http://hdl.handle.net/10150/622102.

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4

Huggett, David Alan John. "Potential insect pests of the biomass crop Miscanthus." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/7180.

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5

Farr, Ian John. "Automated bioacoustic identification of statutory quarantined insect pests." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437593.

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6

Smith, Ethan A. "Is everything connected? following the predators, pests, and plants within a no-till, western Montana agroecosystem /." CONNECT TO THIS TITLE ONLINE, 2006. http://etd.lib.umt.edu/theses/available/etd-12212006-142245/.

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7

Schirocki, Anke Gabriele. "The effect of temperature on invasion and pathogencity of entomopathogenic nematodes (nematoda: Rhabditida) to larvae of Galleria mellonella and Otiorhynchus sulcatus." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308061.

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8

Williams, Elizabeth Catherine. "Entomopathogenic nematodes as control agents of statutory insect pests." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265978.

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9

Powell, Kevin Steven. "Antimetabolic effects of plant proteins on homopteran insect pests." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5757/.

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Abstract (sommario):

Homopteran insect pests can cause severe economical damage to crop plants by both direct physical means and as vectors of plant viral diseases. They are notoriously difficult insects to control by conventional methods, primarily due to their ability to evolve resistance-breaking biotypes within a relatively short time period. The production of genetically modified crop plants, expressing insecticidal genes, offers a novel method of control for a wide range of insect species. Once suitable gene products, such as plant- derived proteins, have been identified as having insecticidal effect against

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10

Malek, Robert Nehme. "Novel Monitoring and Biological Control of Invasive Insect Pests." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/257781.

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Abstract (sommario):

Invasive species are alien to the ecosystem under consideration and cause economic or environmental damage or harm to human health. Two alien insects that fit this description are the brown marmorated stink bug, Halyomorpha halys and the spotted lanternfly, Lycorma delicatula. Both invaders are polyphagous pests that feed on a myriad of plant species and inflict severe crop losses. As sustainable control methods depend on the accurate monitoring of species’ invasion and involve the use of natural enemies, we addressed these two facets by exploring novel monitoring techniques and deciphering ho

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11

Malek, Robert Nehme. "Novel Monitoring and Biological Control of Invasive Insect Pests." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/257781.

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Abstract (sommario):

Invasive species are alien to the ecosystem under consideration and cause economic or environmental damage or harm to human health. Two alien insects that fit this description are the brown marmorated stink bug, Halyomorpha halys and the spotted lanternfly, Lycorma delicatula. Both invaders are polyphagous pests that feed on a myriad of plant species and inflict severe crop losses. As sustainable control methods depend on the accurate monitoring of species’ invasion and involve the use of natural enemies, we addressed these two facets by exploring novel monitoring techniques and deciphering ho

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12

Weaver, David K. (David Keith). "The role of selected frass chemicals and cuticular lipid components in the orientation of certain larval Tenebrionidae /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74340.

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The larvae of Tenebrio molitor Linne and Alphitobius diaperinus (Panzer) both aggregated upon substrates treated with aqueous extracts of conspecific larval frass. Lactic acid is a pheromone in the frass of both species. Alphitobius larvae were attracted to lactic acid, while lactic acid caused Tenebrio larvae to arrest.<br>Propionic acid is a repellent pheromone present in Tenebrio frass, but the lactic acid-induced response is dominant. The role of these chemical factors in population orientation of the larvae of these mealworm species is discussed.<br>The cuticular lipids of the larvae of b

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13

Zhou, Yanmin. "Insect adhesion on rough surfaces and properties of insect repellent surfaces." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709055.

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14

Perera, Mallawa Thanthrie Mudiyanselage D. Renuka. "Response of pests of brassicae and their parasitoids to synthetic and natural feeding deterrents." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287701.

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Antifeedants and growth regulators have potential as alternatives to conventional methods of insect pest control. As with conventional chemicals it is important to consider their effects on natural enemies of the pests. The aim of this project was to determine whether the bitter-tasting synthetic chemical denatonium benzoate as an antifeedant and compare with neem derivatives. Other aims were to investigate their effect on parasitoids and the field infestation of cabbage pests. Denatonium benzoate is systemic and had no contact effect but acted as an antifeedant on a generalist sap feeder <I>M

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15

Kadango, Tendayi Lovemore. "Farmers' perceptions of insect pests in the Eastern Cape maize-based cropping systems and the effects of crop residue management on insect pest populations." Thesis, University of Fort Hare, 2018. http://hdl.handle.net/10353/6202.

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Maize (Zea mays L.) is one of the most important crops in South Africa that is cultivated for food, feed and as a cash crop. Maize in the Eastern Cape is typically grown for consumption and the Province is one of the least producers owing to small landholdings, poor production conditions and pests. This study investigated: (i) the different maize cropping systems smallholder farmers practice in the Eastern Cape (EC), (ii) the major maize insect pests within the identified cropping systems, (iii) the perceptions of Eastern Cape smallholder maize farmers on the effects of insect pests, and (iv)

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16

Zanga, Daniela. "High carotenoid corn: agronomic evaluation and interactions with insect pests." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/400802.

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El meu projecte de recerca està centrat en la caracterització molecular, bioquímica i agronòmica, d’una línea transgènica de panís amb un elevat contingut en carotenoides, denominada, CarolightR en condicions ambientals diferents. És important analitzar el comportament d’una varietat nova de planta en condicions de camp amb la finalitat d’avaluar l’impacte dels múltiples estressos biòtics i abiòtics als que estarà sotmesa. Amb les anàlisis que he dut a terme, he determinat que tant el contingut en carotenoides totals, com la seva composició en l’endosperma, en l’etapa de maduresa, van ser molt

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17

Bolton, Michael. "Genetic control methods for agricultural insect pests of global importance." Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/63943/.

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Abstract (sommario):

Insect pests of agricultural significance pose substantial risks for food security in an ever-growing global population. Conventional control measures used against these pests have had varying degrees of success and examples of pesticide resistance and offtarget effects of pesticides highlight the urgent need for the development of new, environmentally benign control methods. Deployment of ‘self-limiting’ insects is a species-specific approach that can be used to combat many species, including two major agricultural insect pests, the Medfly, Ceratitis capitata, and the Diamondback moth (DBM),

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18

Ukeh, Donald A. "The identification and use of semiochemicals for the control of the maize weevil, Sitophilus zeamais (Motschulsky) in Nigeria." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25167.

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19

Chang, Gary C. "Ecological interaction among natural enemies and its consequences for biological control /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5205.

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20

McNamee, Peter James. "The equilibrium structure and behavior of defoliating insect systems." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27439.

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Abstract (sommario):

Defoliating insect systems, defined for the purposes of this thesis as being composed of insects which defoliate forest trees and the species with which they interact, such as their host trees and their natural enemy complexes, exhibit a wide variety of population behaviors. Similarly, a number of theories and models have been proposed to explain these behaviors. These theories emphasize the importance of different ecological processes, often concentrate on the defoliator and overlook the importance of other components. Also, much of the current understanding of the dynamics of these systems

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21

Ramos, Olgaly. "Entomopathogenic nematodes for the biological control of stored product insect pests /." Search for this dissertation online, 2005. http://wwwlib.umi.com/cr/ksu/main.

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22

Mazahery-Laghab, Hojjatollah. "Endogenous resistance to insect pests in alfalfa : engineering for enhanced resistance." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4695/.

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Abstract (sommario):

Alfalfa (Medicago sativa) is a valuable forage crop grown throughout the World. While the crop is resistant to attack by many insect pests, it is subject to potentially severe losses through the action of several specific pests, which are adapted to alfalfa as a host. The most economically damaging of these pests is the alfalfa weevil, Hypera postica. This thesis investigates the endogenous defences of alfalfa against insects, which are responsible for its resistance to non-pest species, and develops a strategy for increasing the resistance of alfalfa towards pest species, specifically alfalfa

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23

Sgard, Frederic. "Molecular genetic studies on nicotinic acetylcholine receptors of major insect pests." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239499.

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24

Green, Emily. "Development of genetic control strategies for insect pests using CRISPR/Cas9." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAJ100.

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Abstract (sommario):

La lutte contre les insectes nuisibles reste un défi économique, environnemental et de santé important. Le forçage génétique par CRISPR/Cas9 (FG) est un nouveau system de control génétique. Ce sont des systèmes génétiques capables d’envahir rapidement une population. Ce travail de thèse présente mes efforts pour développer des FGs chez deux espèces nuisibles, Anopheles gambiae, un vecteur majeur du paludisme, et Drosophila Suzukii, un ravageur agricole d’importance mondiale. Les objectifs de ce projet étaient de développer un FG à but d'élimination chez D. Suzukii, visant à réduire la taille d

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25

Dong, Xue. "Response of stored grain insect pests and barley to ozone treatment." Thesis, Dong, Xue ORCID: 0000-0002-2647-5747 (2022) Response of stored grain insect pests and barley to ozone treatment. PhD thesis, Murdoch University, 2022. https://researchrepository.murdoch.edu.au/id/eprint/64871/.

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Ozone (O3) has distinct advantages over other stored grain pest treatments, such a toxicity to a broad range of organisms and rapid auto-decomposition to oxygen without leaving residues, making it a promising fumigant to protect stored grains. This research project focused on understanding how stored grain insects and barley respond to ozone. Several studies have assessed the efficacy of O3 against pests in stored maize and wheat grain, but little is known about the toxicity of O3 on stored grain pests in barley and its effects on barley quality and germination. My results indicated that m

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26

Salloum, Gregory Stewart. "Insect growth inhibitors from asteraceous plant extracts." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26529.

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Petrol and ethanolic extracts of six asteraceous weeds were added to artificial diet and screened for inhibition of larval growth on variegated cutworm, Peridroma saucia (Hbn.). Petrol and ethanolic extracts of Artemisia tridentata and Chamomilla suaveolens and ethanolic extracts of Chrysothamnus nauseosus and Centaurea diffusa were highly inhibitory at five times the naturally occurring concentrations. The two C. suaveolens extracts and the ethanol extract of A. tridentata were active at the natural concentration (100%) and were further examined at 20, 40, 60, and 80% of this level. Inhibitio

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27

Miah, Mohammed Ismail. "The phylogeny and taxonomy of the parasitic wasp subfamily campopleginae (hymenoptera, ichneumonidae)." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286298.

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28

Finn, Erin. "Developing integrated pest management (IPM) techniques for managing key insect pests of blueberries in the Southeastern United States." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001370.

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29

Jacquemai, Ivo. "Acoustic wireless sensing for environmental monitoring." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2011. https://ro.ecu.edu.au/theses/395.

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Abstract (sommario):

The European House Borer (EHB) is a timber pest which attacks dead timber. This pest can cause large scale damage to wooden structures and has already spread throughout many parts of the world. The larvae usually remains undetected for many years while it busily inflicts irrevocable and substantial harm to the timber. Since the pest was first discovered in Western Australia in 2004 the Government has endeavoured to extinguish its existence. In this research, an electronic sensor has been developed in order to detect the presence of EHB larvae in timber. Only an accurate detection can allow for

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30

Garratt, Michael P. D. "Crops, Insect Pests and Natural Enemies : Effects of Organic and Conventional Fertilisers." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/4672.

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Agricultural intensification can have negative impacts on the environment and there isincreasing interest in the use of low intensity or organic agricultural methods toimprove sustainability. Fertiliser is an important component of all agriculturalsystems and can affect the performance of crop pests and their natural enemies. Thisthesis presents the results from a quantitative review of the literature on both farmingsystem and organic and conventional fertiliser effects on pests and natural enemies. Results from a series of laboratory and field experiments investigating the effectsorganic and

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31

Littlefield, Joanne. "Western Flower Thrips on Salad Vegetables: Fighting Insect Pests in Southwestern Arizona." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006. http://hdl.handle.net/10150/622144.

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32

Palumbo, John C. "Insect Pests in Yuma Winter Vegetables: Review of the 2003-2004 Season." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/215231.

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Abstract (sommario):

Insect pest populations seemed to be exceptionally abundant on our desert vegetable crops this past growing season. It is difficult to explain why some insect populations occurred in larger numbers this year, but the weather we experienced may have had a significant role. Hot, dry weather in the early fall and spring, coupled with moderate winter temperatures provided ideal conditions for some insect pests.

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33

Åsman, Karolina. "Vegetational diversity as a strategy for reducing pest oviposition in field vegetables /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5813-7.pdf.

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34

Greenfield, Bethany Patricia Jane. "Metarhizium pathogenesis of mosquito larvae." Thesis, Swansea University, 2014. https://cronfa.swan.ac.uk/Record/cronfa42819.

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35

Fakude, Moelo Patience. "Eradication of storage insect pests in maize using microwave energy and the effects of the latter on grain quality." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-01292009-131525.

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36

Cozens, Russel David. "Insect and disease risk factors in established interior spruce plantations." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24426.

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Abstract (sommario):

Forest insects and diseases active in immature interior spruce stands in the central interior of British Columbia and their possible implications in forest management practices have been surveyed. Collection records, spanning the period 1949 to 1982, from the Forest Insect and Disease Survey of the Canadian Forestry Service were reviewed for the Prince George Timber Supply Area and the pest incidence in immature interior spruce stands summarized. Twenty-two plantations, established between 1963 and 1973, were surveyed to determine the relative incidence of the major insect and pathogen pests

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37

Rust, Nico. "The development of a commercial production process for p-menthane-3,8-diol." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/d1018273.

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The synthesis of p-menthane-3,8-diol via the acid-catalyzed cyclization of citronellal in a dilute aqueous sulphuric acid medium was investigated using conventional batch and continuous systems in order to develop a commercial production process for said p-menthane-3,8-diol (PMD). The batch studies conducted during the first part of this study showed that the formation of PMD from citronellal occurs via an intra-molecular Prins reaction that results in the formation of both the desired PMD product, as well as the partially hydrated isopulegol. It was shown that the formationof the by- product,

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38

Nugaliyadde, Lionel. "Factors associated with the resistance of rice (Oryza sativa L.) to Nilaparvata lugens (StaÌŠl)." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387408.

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39

Adedipe, Folukemi Ebunoluwa. "Investigation of ecological behavior of two Coccinellidae beetle adults for biological control." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10491.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains vii, 60 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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40

Kerns, David L., and John C. Palumbo. "Confirm and Success: New Tools for Insect Management in Cole Crops and Leafy Green Vegetables in Arizona." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/146759.

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41

Netshifhefhe, Shandukani Rudolf. "The compilation of indigenous knowledge regarding insect pests in small-scale farming communities in North Eastern South Africa." Pretoria: [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-06302005-113354.

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42

Rogers, Richard E. L. "Insect and mite monitoring in commercial apple orchards in Nova Scotia (1979-1985)." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65368.

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43

Njoroge, Anastasia Wanjiru [Verfasser]. "Acoustic detection of insect pests of stored grains in Kenya / Anastasia Wanjiru Njoroge." Kassel : Universitätsbibliothek Kassel, 2017. http://d-nb.info/1151463493/34.

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44

Turner, David Edward. "Reduced dose rate insecticide use in cereals : effects on insect pests and predators." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296165.

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45

Hinchliffe, Gareth. "Novel biopesticides based on recombinant avidin for protection of crops against insect pests." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/6907/.

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Abstract (sommario):

Farmers are required to increase their food productivity to meet the demand from a continually enlarging population. A major constraint on meeting this requirement is the damage created by insect pests. Agricultural pests and associated diseases destroy 30%-40% of the world’s crop produce. The withdrawal of broad-spectrum chemical insecticides, the threat of the development of resistance in insect pests to remaining compounds and the possibility of new pest species spreading into the UK as a result of environmental change have prompted research into alternative pesticides. Protein-based insect

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46

Crespo-Pérez, Maria Veronica. "Global changes and distribution modeling of invasive insect pests in the Tropical Andes." Paris 6, 2012. http://www.theses.fr/2012PA066013.

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Abstract (sommario):

La physiologie, le comportement et la distribution des insectes sont grandement influencés par la température. La compréhension de la réponse des insectes à la température permet de développer de modèles capables de simuler leurs dynamiques spatio-temporelles. De tels modèles représentent des outils intéressants afin d’améliorer le contrôle intégré des ravageurs car ils permettent d’identifier les risques liés a ces espèces. La présente étude a pour objectif de développer plusieurs stratégies de modélisation de la distribution et propagation de ravageurs invasifs de la pomme de terre dans la r

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47

Hamilton, Amanda Jane. "Discovery and development of new phylloplane bio control agents to control insect pests." Thesis, University of Reading, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701806.

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Abstract (sommario):

Aphids cause considerable harm to a variety of crops each year due to damage from feeding and the transmission of viruses. Effective, conventional pesticides that are authorised for use are in continuous decline; simultaneously many of the current biological pesticides fail to meet required efficiency. Increasing demands for improved food security mean that a solution for this problem is needed. Plant surfaces are well known to provide a niche for many bacteria. Some species of bacteria possess pathogenic qualities and are known to kill or incapacitate insects. Therefore there is the potential

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48

Rabin, Daniel. "Using Computer Imaging to Assess Visual Impacts of Forest Insect and Disease Pests." DigitalCommons@USU, 1989. https://digitalcommons.usu.edu/etd/6446.

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Abstract (sommario):

Forest insect and disease pests alter the appearance of trees, thereby impacting visual resources. Because of the complexity of most forest landscapes, the degree of visual impact of pest-infested forest stands is difficult to quantify. This paper describes a method of measuring visual impacts of pest-infested forest stands. Photographs of healthy Ponderosa pine trees were entered into a computer video-image-processing system. Using this system, images of trees were altered to simulate different degrees of infestation by limb rust, a forest pathogen. The altered and unaltered images were shown

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49

Chavan, S. B. "Biocontrol of insect pests in agriculture using chitinolytic enzyme complex of myrothecium verrucaria." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2009. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2734.

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50

Scholtz, Anna J. "Evaluation of the large-scale trapping of blowflies (Lucilia spp.) for an integrated pest management program : the lucitrap." Thesis, Port Elizabeth Technikon, 2003. http://hdl.handle.net/10948/126.

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The results presented in this dissertation have been partially presented at scientific meetings. Chapter 2 is an exact copy of the technical contents of a paper submitted to a scientific journal. The format of this paper however has been changed to comply with the format used in this dissertation. The results of this paper were partially presented at the 36th National Congress of the South African Society of Animal Science, 5 – 8 April 1998 held in Stellenbosch. In this chapter errors occurred in the execution of the trial, but these were corrected in the follow-up trial after consulting with

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