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 24 for “"Ectoparasite"”.
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Development of a Precision Mite Management Program for the Control of the Ectoparasite Varroa destructor in Hives of Apis mellifera L.
The European honey bee, Apis mellifera, is an important pollinator of horticultural and agricultural field crops, providing ≈ 90% of all commercial pollination services (Genersch et al. 2010). The recent rise in colony loss due to Colony Collapse Disorder (CCD) has been a source of concern for both …
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Effects of Fire on the Ectoparasites of Small Mammals in Longleaf Pine (Pinus Palustris) Habitats
… decreases prevalence and abundance of ectoparasites and therefore increases the condition of small mammals in longleaf pine habitats. I trapped two areas with paired burned and unburned sites in east central Georgia during 2002 2003. I collected 190 mammals from 9 species and recovered …
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Flea and Louse Infestations of Cotton Rats (Sigmodon Hispidus) In The Southeastern United States
<p>Ectoparasites were collected from cotton rats (Sigmodon hispidus) in 20 sites in the Southeastern United States (FL, GA, MS, NC and SC). Prevalence and mean intensity of parasitism by sucking lice (Anoplura) and fleas (Siphonaptera) of cotton rats were recorded at all sites. The geographical …
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Factors Influencing Ectoparasitism on Western Fence Lizards (Sceloporus occidentalis): Host Sex, Testosterone, Reproductive Condition, and Behavior
… several vertebrate taxa that males have higher ectoparasite intensities than females and males with increased testosterone have increased ectoparasite intensities. One potential reason for these observations is that testosterone concentrations are elevated in males, particularly during the …
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Assessment of the Small Indian Mongoose (Herpestes auropunctatus) in Sustaining Cattle Fever Tick populations in Puerto Rico
The ectoparasite Rhiphicephalus (Boophilus) microplus, also referred to as Cattle Fever Tick (CFT), serves as the primary vector for the protozoan pathogen Babesia which causes bovine babesiosis in livestock and wildlife hosts. Current management practices in Puerto Rico are failing to control CFT …
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Parasite Burden and Potential Virus Exposure in the Gopher Tortoise <em>(Gopherus polyphemus)</em>
… and such a role may be related to endo- and ectoparasite loads in the tortoise. To assess this hypothesis, a survey of gopher tortoises from areas in southeastern Georgia where EEEV is present was conducted from May 2001 to August 2002. In this survey, tortoise blood samples were tested for …
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Patterns of avian haemosporidia in birds within the greater Cape Town area
… bird has at least one species of endoparasite or ectoparasite, if not several. Thus it cannot be taken for granted that a particular individual avian species is free from haemosporidian infections. Birds have the richest diversity of intracellular, single cell, protozoan parasites with complicated …
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Sources And Consequences of Ecological Intraspecific Variation In The Florida Scrub Lizard (Sceloporus Woodi)
… use, behavior, diet, morphology, and ectoparasite load at a pine island site to S. woodi in scrub habitats. No variation in movement patterns existed between seasons and sexes. However significant seasonal and sexual differences did exist in the way S. woodi attacked prey. Using the …
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Ectoparasites of the southern mullet Liza Richardsonii in the Berg Estuary, South Africa
The aims of this study were to observe changes in ectoparasite abundance and diversity on fish in relation to salinity gradients in the Berg Estuary. The host species studied was the commercially important, euryhaline southern mullet Liza richardsonii that is superabundant in estuaries of the …
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Investigating how bat ectoparasites influence the skin microbiome diversity and composition in Washington State bats
… infection is crucial for management of WNS. Bat ectoparasites, including bat mites and bat flies, are omnipresent in bat populations, yet the relationship between these ectoparasites and bat health is still unknown. We examined the relationship between bat ectoparasites and the skin microbiome in …
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The ecology of venom use in the Javan Slow Loris (Nycticebus Javanicus) and its implications for conservation
… and parasites, and regularly checked animals for ectoparasites. I also captured arthropods over five months. I monitored the coexistence with potential predator species using camera traps and by conducting forest surveys throughout Java. Venom may be sequestered from secondary plant metabolites …
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Asian long-horned tick distributions in Virginia pastures and evaluating the horn fly as a possible vector of Theileria orientalis Ikeda
… tick (Haemaphysalis longicornis) is an invasive ectoparasite of growing concern in the U.S. due to its role as the primary vector of the emerging cattle parasite, Theileria orientalis Ikeda. To better understand the transmission landscape in Virginia, this study first evaluated the fine-scale …
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The Causes and Consequences of Complex Behavioral Trait Variation in a Resident Montane Bird
… considers variation in nestling immune response, ectoparasite load, and nest composition to determine how these developmental conditions shape behavioral trait variation. Ectoparasites are known to have fitness consequences for their hosts, but there is mixed evidence of how widespread and …
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Female Ornamentation in the American Robin
… bill colour decreased seasonally as well as with ectoparasite load. I found evidence of assortative mating based on crown UV reflectance and bill colour. To assess reproductive investment, I measured egg size, yolk proportion, and deposition of yolk testosterone and carotenoids. Females with …
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An investigation into the host-parasite interrelationship between Common Swifts and Hippoboscid Louse-Flies
… is a monoxenous haematophagous nest ectoparasite of the Common Swift, Apus apus (Aves: Apodidae). Despite expectations, no detrimental effect to hosts from C. pallida has been determined. Here this relationship is re-apprised. C. pallida life-history is investigated, with particular …
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Size Correlations between Sucking Lice and Their Hosts Including a Test of Harrison's Rule
Ectoparasite size can be influenced by many factors; one is host size. Harrison's rule states that larger hosts typically have larger parasites. In this study, sucking lice (Insecta: Anoplura) were used to test this rule. Sucking lice should provide a good test for this rule because they are …
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Knemidokoptic mite infections on the Cape Peninsula population of Black Sparrowhawks
… systems, specifically how this study ectoparasite can negatively affect the fitness of their hosts.
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Evolution of major histocompatibility complex genes in New World bats and their functional importance in parasite resistance and life-history decisions in the lesser bulldog bat (Noctilio albiventris)
… alleles which were associated with low and high ectoparasite burden according to predictions of the ‘frequency dependent selection hypothesis’. Parasite resistance has been suggested to play an important role in mediating costly life history trade-offs leading to e.g. MHC- mediated benefits in …
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Studies of the Annual Cycle of the Swallow-Tailed Kite (<em>Elanoides forficatus</em>): Migration, Habitat Use, and Parasites
… examined for blood parasites (blood smears) and ectoparasites (dusted with pyrethrin). I found one trypanosome and two microfilaria in the blood of three birds. This was the first time kite blood had been examined for parasites. I found six ectoparasite species (mean of 21.5 …
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