Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Entomopathogenic nematodes"”.
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Spatial Ecology of Entomopathogenic Nematodes with Contrasting Foraging Strategies
… identified a dichotomy in foraging behavior of entomopathogenic nematodes (EPNs) but little is known about their dispersal patterns in the field. Overall goal of this dissertation research was to examine the dispersal behavior of two EPN species with contrasting foraging strategies, cruiser, …
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Pheromones in entomopathogenic nematodes: effects on dispersal and reproductive behaviours
Entomopathogenic nematodes (EPN) are increasingly gaining favour as model organisms for studying traits relevant to parasitism and for their commercial value as biocontrol agents. The overall project aim is to explore the role of pheromones in coordinating a variety of important behaviours in …
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Non chemical alternatives for pest management: Entomopathogenic nematodes and UV-C light
… viability of rearing and storing four species of entomopathogenic nematode (EPN), Steinernema feltiae, Steinernema carpocapsae, Heterorhabditis bacteriophora, Heterorhabditis indica; and, 2) the efficacy of UV-C radiation applied, pre-transport, as a preventative disease control strategy against …
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Investigating the potential of South African Entomopathogenic nematodes for the management of Ceratitis capitata (Wiedemann)
… Among the most promising management options are entomopathogenic nematodes (EPNs), particularly locally adapted species which may have enhanced field performance. However, despite South Africa’s rich EPN diversity, very limited research has evaluated the efficacy of local isolates against C. …
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Behavioural interactions between the large pine weevil, Hylobius abietis L.(Coleoptera: Curculionidae), and entomopathogenic nematodes
Entomopathogenic nematodes (EPN) of the families steinernematidae and Heterorhabditidae are a promising prospective control agent of the large pine weevil, Hylobius abietis L. (Coleoptera: Curculionidae), a major pest in Irish forestry. Applications of EPN to tree stumps in Ireland and the UK have …
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Ecological impact of entomopathogenic nematodes used to control the large pine weevil, Hylobius abietis (Coleoptera: Curculionidae)
… in whichever context they are being employed. Entomopathogenic nematodes (EPN; Steinernema carpocapsae and Heterorhabditis downesi) are currently being inundatively applied to tree stumps on coniferous clearfell sites in the UK and Ireland as biological control agents against the large pine …
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Efficacy of Entomopathogenic Nematodes and Entomopathogenic Fungi against Masked Chafer White Grubs, Cyclocephala spp. (Coleoptera: Scarabaeidae)
Entomopathogenic nematodes (EPN) (Heterorhabditis bacteriophora and H. megidis) and entomopathogenic fungi (EPF) (Metarhizium anisopliae and Beauveria bassiana) were evaluated for efficacy against masked chafer white grub, Cyclocephala spp., under laboratory and greenhouse conditions, as well as …
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Effect of an alternative viticulture on native entomopathogenic nematodes and other organisms linked to their soil food web in DOCa Rioja vineyards
Entomopathogenic nematodes (EPNs) are biological control agents that often occur naturally in crop soils. The conventional agricultural practices of regular tillage and agrochemical applications predispose to soil biodiversity losses, compromising soil health and disrupting the natural balance of …
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Effects of a dual application of entomopathogenic nematodes and entomopathogenic fungi against a forest pest, Hylobius abietis L. (Coleoptera: Curculionidae) and a horticultural pest, Otiorhynchus sulcatus F. (Coleoptera: Curculionidae)
Entomopathogenic nematodes (EPN) and entomopathogenic fungi (EPF) are pathogens which require an insect host to fulfil their life cycle and are commonly used as biocontrol agents. Studies have shown that a combination of EPN and EPF can result in greater insect mortality when compared to the agents …
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Ecology and management of wireworms (Coleoptera: Elateridae) in conventional and organic production systems
… biological control to evaluate the efficacy of entomopathogenic nematodes and fungi as single and mixed application against Limonius californicus and L. infuscatus in organic vegetable farms. The results showed the higher efficacy of commercial EPN, Steinernema feltiae, against Limonius species …
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Patogenisitas isolat lokal nematoda entomopatogen terhadap larva spodoptera litura
… can live in groups and spend plants overnight. Entomopathogenic nematodes are one of the biological agents that are pathogenic to insects and can be used as a pest controller. This study aims to determine pathogenicity local isolates of entomopathogenic nematodes against Spodoptera litura larvae …
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Development of biotools for vineyard-associated pest and disease control based on entomopathogenic nematode symbiotic bacteria
… In this context, symbiotic bacteria of entomopathogenic nematodes, specifically Xenorhabdus spp. and Photorhabdus spp., emerge as potential biocontrol agents due to their ability to produce bioactive compounds with insecticidal and antifungal properties. We hypothesized that these …
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Phenotypic variation in Photorhabdus temperata K122
… of the infective juvenile (IJ) stage of entomopathogenic nematodes of the Heterorhabditis family. The bacteria and its nematode partner together form an insect killing (entomopathogenic) complex that kills the soil dwelling larval stages of a wide variety of insect species. Photorhabdus …
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Genetic Analysis of Tritrophic Interactions between Entompathogenic Nematodes, Symbiotic Bacteria and Blood – Sucking Flies.
… endemic areas is a priority in vector control. Entomopathogenic nematodes (EPNs) are microscopic roundworms, which are obligate parasites of insects from the family Rhabditae. In particular, soil-dwelling nematodes from the genera Heterorhabditis and Steinernema. Presently EPNs are used in a …
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Entomopathogenic nematode interactions with white grubs from forest and sugarcane plantations
… Such alternatives can include the use of entomopathogenic nematodes, EPNs. A review of the available literature revealed that EPNs can potentially provide a higher percentage control of white grubs, when compared to chemical insecticides. However, this control efficacy is characterized by …
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Exploiting entomopathogenic nematode neurobiology to improve bioinsecticide formulations
Entomopathogenic nematodes (EPNs) are soil dwelling organisms that target and kill insects. They have sophisticated chemosensory apparatus, with which they perceive host associated cues to locate them. Once a suitable host is located, they employ a diverse range of host finding behaviours to …
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Interactions of entomopathogenic fungi and other control agents: mechanism and field potential against Hylobius abietis larvae
… parasites in managing pests and their damage. Entomopathogenic fungi (EPF) have a crucial role in natural ecosystems and are being developed as alternative control agents for insect pests. Both Beauvaria bassiana and Metarhizium anisopliae have been proven to be effective biological control …
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Co-existence and niche separation of two subspecies of Photorhabdus temperata associated with Heterorhabditis downesi in a dune grassland
Entomopathogenic nematodes belonging to the families Heterorhabditidae and Steinernematidae form symbiotic relationships with entomopathogenic bacteria from the genera Photorhabdus and Xenorhabdus, respectively. Previous studies showed that Heterorhabditis downesi was associated with two different …
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The Molecular Signatures of Adaptive Plasticity in Parasitic Nematodes
Entomopathogenic nematodes (EPN; Steinernema spp. and Heterorhabditis spp.) are parasites which kill and reproduce within insects. The infective juvenile (IJ) is a developmentally arrested, nonfeeding, stress tolerant stage which forages in the soil for new insects to infect. IJs carry symbiotic …