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 20 of 32 for “"Scarabaeidae"”.
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Phylogeny of the Scarabaeini (Coleptera: Scarabaeidae)
The Scarabaeini comprises some 146 species of ball-rolling dung beetles belonging to the genera Pachylomerus and Scarabaeus, and Scarabaeus subgenera, Kheper, Pachysoma, Scarabaeolus, Scarabaeus and· Sceliages. Their distribution extends throughout the Afrotropical region (including Madagascar) and …
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Phylogenetic Analysis of the Cetonini of the New World (Coleoptera: Scarabaeidae: Cetoninae)
The American genera of Cetoniini (Coleoptera: Cetoniinae) are analyzed. Fifty-eight morphological characters of seventy two taxa, including Cetoniini from the entire world and other representative tribes of Cetoniinae, were included in a phylogenetic analysis and studied under the parsimony …
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Pollen digestion in flower-feeding Scarabaeidae : protea beetles (Cetoniini) and monkey beetles (Hopliini)
Beetles pollinate over 80% of all flowering plants and feed on the two most common floral rewards, nectar and pollen. Pollen is nutritionally very valuable, being a rich protein and carbohydrate source. However, the hard and highly resistant outer wall (exine) of the grain is an obstacle that …
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Understanding the evolutionary radiation of the megadiverse monkey beetle fauna (Scarabaeidae: Hopliini) of South Africa
Most HIV vaccines currently in development aim to protect people from infection or disease by eliciting strong anti-HIV cytotoxic T lymphocyte (CTL) responses. Evolved evasion mutations that undermine host immune responses pose a major challenge to the development of such vaccines. Understanding …
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Behavioural, microhabitat, and phylogenetic dimensions of intrasexual contest competition in combatant monkey beetles (Scarabaeidae: Hopliini)
… within the monkey beetles (Coleoptera: Scarabaeidae: Hopliini), a taxonomically and phenotypically diverse group of pollinating insects in the Greater Cape Floristic Region (GCFR) that shows a high degree of sexual dimorphism and mating behaviour driven by male-male competition. I build …
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Benefits of Dung Beetles (Coleoptera: Scarabaeidae) on Nutrient Cycling and Forage Growth in Alpaca Pastures
Alpacas have been gaining prominence in the U.S. since the early 1980s. In pastures, dung beetle activity has been shown to enhance the degradation and incorporation of dung into the soil. The benefits of this activity have been quantified for cattle, but not for alpacas. The objectives of this …
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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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Aktivierung und Inaktivierung des Cry8C-Toxins von Bacillus thuringiensis japonensis Stamm Buibui im Darmsystem von Engerlingen (Scarabaeidae)
Bacillus thuringiensis japonensis Stamm Buibui (BTJ) zeigt Melolontha melolontha eine geringe Wirkung, während Anomala-Arten und Popillia japonica empfindlich sind. Zur Identifizierung der Ursachen für die unterschiedliche Wirksamkeit, wurde die Darmphysiologie der Larven von P. japonica und M. …
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Climatic change, habitat modification and relative age of dung beetle taxa (Coleoptera: Scarabaeidae, Hydrophilidae, Histeridae, Staphylinidae) in the South-Western Cape
1. Two study sites near Pretoria in the Transvaal were located in a summer rainfall climatic area, type 113d (Walter & Lieth 1964), on deep and in both open woodland and grassland. 2. Eleven study sites in the south-western Cape were distributed between two winter rainfall climatic areas, type IV …
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Pest Management of Japanese Beetle (Coleoptera: Scarabaeidae) and a Study of Stink Bug (Hemiptera: Pentatomidae) Injury on Primocane-bearing Caneberries in Southwest Virginia
Field experiments (2007-2009) and laboratory bioassays (2009) tested the efficacy of insecticides with short pre-harvest intervals, caneberry cultivar susceptibility, and geranium toxicity for reducing Japanese beetle (JB) activity on primocane-bearing caneberries. Deltamethrin, …
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Parasitism of Scarabaeidae by Parasitoid Flies in British Columbia and Western USA: Informing Biological Control Programs Against Popillia japonica with Crowd-sourced Records of Non-target Scarab Beetles
Following the 2023 Port Coquitlam introduction of the parasitoid fly Istocheta aldrichi to suppress a population of the invasive scarab beetle Popillia japonica, I used crowd-sourced online data (44,200 observations in BC and Western USA) to determine: scarab species occurrence; which species may …
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Addressing Insect Declines Via Biodiversity Monitoring, Ecological Restoration, and Population Genetics
… and abundance of beetles in the families Scarabaeidae and Carabidae. Insects are often not included in restoration planning, and elucidating insect responses to restoration can enhance insect conservation. We found restoration practices that increase vegetation diversity and habitat …
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Pest Management Studies of Early Season and Stalk-Boring Insects on Corn in Virginia
… insects, specifically white grubs (Coleoptera: Scarabaeidae) and wireworms (Coleoptera: Elateridae) in cornfields. In the first study, model variables included corn growth stage and larvae per plant. In both years of this study, larvae per plant had a significant effect on grain yield. Grain …
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Descripción del comportamiento de insectos y enfermedades asociadas al cultivo de fresa (Fragaria spp, L) en el municipio de la Sabana, departamento de Madriz
… familias del orden Coleóptera (Chrysomelidae, Scarabaeidae, Curculionidae), así como las principales familias del orden Hemiptera (Pentatomidae, Miridae, Ligaeidae,) también las familias del orden Orthoptera (Gryllidae) y el Orden Homóptera (Cicadellidae), de igual forma se identificò y …
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