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 51 for “"ectoparasites"”.
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Using genomics to uncover the evolutionary histories of ectoparasites on birds
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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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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Anting Behavior in Birds: Ant Selection and Effect of ant Chemistry on Feather Ectoparasites
… The potential associations among ants, feather ectoparasites and birds make anting behavior an important community-level interaction. Although this behavior is cosmopolitan in distribution and occurs in a wide variety of passerine birds, it remains poorly understood. This dissertation tested …
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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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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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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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The Hitchhiker's Guide to the Host: Fleas and the History of Pikas in North America
… (e.g., coccidians, nematodes, and cestodes) and ectoparasites (e.g., fleas and mites). Phylogenetic analysis of pika endoparasites has revealed pikas evolved in Asia and colonized North America in two waves, and that contact between these two pika lineages allowed parasites to be transferred from …
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Parasite Burden and Potential Virus Exposure in the Gopher Tortoise <em>(Gopherus polyphemus)</em>
… nematode species. Of 119 tortoises examined for ectoparasites, 100 were infested with the gopher tortoise tick, <em>Amblyomma tuberculatum</em>. There were a total of 253 male ticks, 69 female ticks, and 1650 nymphs collected from these tortoises. No other ectoparasites were found. Both tick and …
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Phthiraptera Anoplura della Sardegna: analisi delle coinfestazioni ectoparassitiche rilevate su animali d'allevamento e selvatici
… They are small insects, obligatory permanent ectoparasites, characterized by a high host specificity and a high ethological, physiological and anatomical specialization, including the wingless. They feed on epidermal tissues, and the entire life cycle of the Anoplura takes place on the host. …
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The potential health impact of ivermectin mass drug administration for malaria control on swine in Mozambique
BACKGROUND: Both endo- and ectoparasites pose a great challenge to the health of pigs worldwide, placing a significant burden on low-resource countries where veterinary care is minimal. As part of a larger clinical trial assessing the use of ivermectin (IVM) mass drug administration to humans and …
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Historical Land Fragmentation and its Effects on Genetic Diversity and Parasitism of Island Populations of Podarcis erhardii (Lacertidae, Reptilia)
… retention of genetic diversity and prevalence of ectoparasites in natural populations.
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Annual cycle and morphology of lice parasitizing two sympatric African small mammals (Micaelamys namaquensis and Elephantulus myurus)
… suborder Anoplura are permanent haematophagous ectoparasites that spend their entire life cycle on the host. Due to this close relationship, most studies have reported that lice are mainly affected by biotic rather than abiotic factors. Although parasites in general have become the focus of …
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Elucidating the Molecular Function of Reprolysin Metalloproteases in Tick-Host-Pathogen Interaction
<p>Ticks are ectoparasites that attach to their host for many days to weeks, feeding to engorgement and continuing their species life cycle. The mechanisms behind the successful feeding and manipulation of host immune responses have been associated with the secretion of their specialized saliva. …
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Tick Infestations and Their Consequences for Migratory Songbirds During Spring Stopover
… study seeks to understand how haematophageous ectoparasites, such as ticks (<em>Ixodida</em>), impact host body condition as they feed on passerines during migration. We hypothesized that foraging location would impact tick acquisition by migrants and that tick burdens during migration would …
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Population ecology and parasitism in bumble bees (Hymenoptera: apidae)
… Syntretus sp. (Hymenoptera: Braconidae). Ectoparasites included hypopi of the mite Kuzinia americana Delfinado and Baker (Acari: Acaridae) and Parasitus spp. mites (Acari: Parasitidae).
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Characterization of the Bacterial Microbiome of Exotic Tick Species Collected from Migratory Birds
… birds often serve as natural/accidental hosts to ectoparasites like ticks (predominantly immature stages) and are known reservoirs of several pathogens transmitted by ticks. Parasitizing these birds, exotic tick species often hitch rides to non-native ecological niches, bringing along tick-borne …
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Pathological and physiological relationships of parasitic disease in a select cottontail rabbit population
… collars resulted in complete elimination of ectoparasites from rabbits which received this treatment. The two groups of rabbits which received treatment with the drug Tramisol had a significant reduction (p<.05) in the number of nematode parasites recovered. Reduction of nematode numbers was …
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