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 23 for “"Frass"”.
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Saproxylic Insights: Unveiling Gut Microbial Dynamics in Forest Floor Invertebrates and Their Frass in the Tallaganda Region, NSW
… spiders, and their immediate environment, the frass. All individuals used in this study were found in the Tallaganda Region of New South Wales, Australia. This study utilized the V4-V5 region of the 16S rRNA gene sequences to characterize the gut microbial structure and composition of the hosts …
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Identifying floral hosts of cerambycid beetles using palynology
… for extracting and quantifying pollen from the frass of 21 species of beetles collected on flowers, with pheromone-baited panel traps, and at lights. I identified pollen grains to genus or species when possible and estimated abundances using calculations based on standardized markers added to …
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The value of Mopane worms: quantifying ecosystem services in terms of nutrient cycling in semi-arid regions of Limpopo
… assess the contribution of mopane caterpillars’ frass to nutrient cycling by determining the nitrogen mineralization rates of frass compared to that of mopane leaves. We used search engines such as African Journals Online (AJOL), Google Scholar, and Web of Knowledge. The online databases were …
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Investigating the potential utilisation of black soldier fly (Hermetia illucens) as an alternative protein source in tilapia and carp feed
… fly (BSF; Hermetia illucens) larvae meal and BSF frass as alternative protein ingredients. Defatted BSF larvae meal was tested in diets for both Nile tilapia (Oreochromis niloticus) and mirror carp (Cyprinus carpio), whereas BSF frass was assessed only in Nile tilapia.<br/>In the first experiment, …
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Effects of Plant Damage, Herbivore-Associated Cues, and Learning on Foraging Behavior of a Parasitoid Wasp
… of wasp foraging cues (plant damage, host frass, and host larvae). These manipulated plants are referred to as target plants. Eight different combinations of cues were applied to the target plants: whole damage (all three foraging cues), control (no cues added), plant damage and larva, …
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Facultative mutualism between the navel orangeworm Amyelois transitella (Lepidoptera: Pyralidae) and Aspergillus flavus
… of navel orangeworm larvae and in or on their frass by rearing larvae on an artificial diet in the presence and absence of the fungus. I found that the fungus grew ~2-fold faster on almond PDA in the presence of navel orangeworm larvae (t = 52.14; df = 19; P < 0.001). Additionally, I collected …
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The influence of Microhodotermes viator nest density and dispersion on ecological processes
… the quantification of termite faecal matter (frass) on heuweltjies and the associated enrichment in Worcester, and identifying a relationship between the distinct plant communities associated with heuweltjies and invertebrate density and richness from several sites. This study marks the first …
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Ecology, behavior, impact, and an integrated pest management strategy for the orangestriped oakworm, Anisota Senatoria (J. E. Smith), in the urban landscape
… larvae. Anisota senatoria defoliation impact and frass were measured. Growth and root starch were significantly reduced with increased defoliation in Quercus palustris Muench., pin oak, but Q. phellos root starch was not reduced. Reduction in starch content in Q. palustris may have been related to …
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The effects of heuweltjies and Microhodotermes viator (Isoptera: Hodotermitidae) on invertebrate assemblages and species turnover in the succulent Karoo, Western Cape
… as were in the invertebrates emerging from the frass, suggesting a trophic cascade. Invertebrates commonly associated with M. viator were found more commonly on the heuweltjies. The Jaccard distances indicated that environmental homogenisation of the heuweltjies resulted in homogenisation of the …
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Effects of Western Spruce Budworm Herbivory on Forest Soils and Litter Decomposition in Central Washington
… nutrient cycling in forest ecosystems by adding frass, carcasses, and molts to the forest floor which are broken down into nitrogen, phosphorous, and other elements to be recycled into biomass. Western spruce budworms are defoliators native to the central Cascades and their herbivory could …
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La comunicazione chimica in Blattaria: contributo al miglioramento della lotta
… pheromone that is excreted along with their frass and that consists of volatile and non-volatile compounds, mainly amines and steroidal glycosides. The effectiveness of faecal extracts obtained from excrements of Blattella germanica (L.), Blatta orientalis L., Periplaneta americana (L.) and …
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The geochemistry of fossil termite nests in Calitzdorp, Western Cape, South Africa
… using a combination of saliva and excrement (frass), resulting in geochemically distinct termitaria relative to the host soils. The enrichment of exchangeable bases derived from organic matter, including termite frass, and upward groundwater movement frequently leads to post-construction …
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Studies on the spread of Verticicladiella procera by soil-borne and insect-borne propagules
… procera was associated with larval galleries and frass in trap bolts and was observed fruiting in insect galleries in root systems of diseased trees. This evidence suggests that transmission by insects, especially weevils, is the more important mechanism for dispersal and that soil-borne …
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Short-term effects of defoliation by gypsy moth larvae on Appalachian headwater streams in Virginia
… significant increase in the amount of detritus (frass and orts) falling into defoliated streams in the spring, which was followed by a significant decrease in the of amount detritus falling into defoliated streams in autumn. Many measures of community structure were analyzed, but only the Index …
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Assessment of management and collection of zoological specimens at natural history museums in Malaysia
… found. However sign of insect activities such frass, shed skins and other body parts are actual evidences of insect pest occurrence. The low temperature and alcohol treatment proved to be the best non-pesticidal methods for remediation of zoological collections. Data from curators and case …
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Documenting the Patterns and Ecological Impacts of a Densovirus on Melissa Blue Butterflies (Lycaeides melissa) and Beyond
… I used qPCR to screen caterpillar waste (i.e., frass) samples collected from multiple potential host taxa and geographic regions, thereby expanding on our knowledge of the host and geographic range of JcDV. These results were the first record of JcDV in several lepidopteran families (with high …
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Interactions of insect herbivory and multiple abiotic stress agents on two wetland tree species in southeast Louisiana swamps
… also increased nitrogen in foliage, insect frass (insect feces), spring-clipped leaves, and abscised litterfall at all sites for both tree species. Nitrogen content of canopy foliage and litterfall was positively correlated with site health. These findings support the hypotheses that the …
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Investigating the lignocellulolytic gut microbiome of huhu grubs
… bioprospecting studies conducted using the frass (excretia) of these huhu grubs resulted in the isolation of a bacterium, Acinetobacter H23, capable of producing an extracellular laccase. Overall, the increased understanding of structure and composition of the gut microbiome of huhu grubs …
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Aggregation, courtship, and behavioral interactions in European earwigs, Forficula auricularia L. (Dermaptera: Forficulidae)
… legs, but these extracts were not attractive. Frass, which also contained fatty acids and hydrocarbons, was attractive, but likely acquired its attractancy through the earwigs' proclivity for consuming carcasses and exuviae. The defensive quinones produced by F aunculana repel conspecifics. A …
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Proteomic studies of the pheromone biosynthetic pathway in the bark beetle, Ips pini, and molecular modeling of an insect-specific aldehyde oxidative decarbonylase, CYP4G2
… in midgut tissue and is released through the frass to signal other beetles to initiate a mass attack and colonize a tree. Both feeding and juvenile hormone III (JHIII) treatment stimulate pheromone production. Studies of the genes involved in the pheromone biosynthetic pathway have showed that …
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