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 11 of 11 for “"Host sex"”.
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Factors Influencing Ectoparasitism on Western Fence Lizards (Sceloporus occidentalis): Host Sex, Testosterone, Reproductive Condition, and Behavior
<p>Host-parasite relationships are one of the most common symbiotic relationships present in a diverse array of ecosystems. There are numerous factors that impact the dynamics of these relationships. Major factors that can influence the degree of parasitism include host sex, hormonal state, …
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Molecular characterization of rodent- and-shrew-borne viruses and the prevalence and intensity of infestation of small mammal fleas, in Namibia
Small mammals host diverse communities of both ectoparasites (e.g. fleas and ticks) and endoparasites (e.g. bacteria and viruses). Some parasites are vectors of diseases that infect both humans and wildlife. The main objective of the study was to discover and molecularly characterize novel …
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Psychoneuroimmunology and Chronic Pain
… central physiologic changes may be related to host sex and psychosocial factors. All participants reported poor sleep quality and took at least one opioid medication, indicating that sleep and opioids may scaffold a portion of the chronic pain paradigm.</p> <p>This study richly describes the …
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HOST RESPONSE TO PRIMARY AND SECONDARY CORONAVIRUS EXPOSURES AND POTENTIAL GERMINAL CENTER MECHANISMS ASSOCIATED WITH PROTECTION DURING RE-EXPOSURE
… it was hypothesized that factors such as host sex, age, and pre-existing immunity could influence SARS-CoV-2 infection outcomes. To address this hypothesis, I developed three objectives, leveraging the development of preclinical animal models in order to assess viral pathogenicity and host …
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Patterns of helminth and protozoan parasite infections in bighorn sheep, Ovis canadensis: sex, season and activity
Males and females in sexually dimorphic species show differences in their physiology and behavior. Each sex may invest energy in mating and reproduction, rather than immune function at different times of the year since they have different priorities, i.e., securing mating access vs increasing …
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Gastrointestinal Parasite infections in Chacma Baboons (Papio ursinus) of the Cape Peninsula, South Africa: the influence of individual, group, and anthropogenic factors
Habitat disturbance can lead to the alteration of host-parasite dynamics and ultimately influence the mechanisms that regulate wildlife populations. This study investigates whether anthropogenic changes in the Cape Peninsula, South Africa, have affected gastrointestinal parasite infections in a …
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Evaluation of the potential of Pteromalus puparum (L.) (Hymenoptera: Pteromalidae) for suppression of the imported cabbageworm and parasitism of the diamondback moth
… emerged as adults, indicating efficient host utilization. Most parasite mortality within the host occurred in the larval stage; mean adult parasite emergence per host for 1983 and 1984 was 52.3 with a 1:1 sex ratio. <i>P. puparum</i> parasitized either host sex, producing equal …
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Ecto-and endo- parasites of silver kob (Argyrosomus Inodorus) from northern Namibia (21º 24ºS)
… by season of capture, fish length and fish sex. Chi-square tests were used to determine differences in mean abundance by season, host sex and host length. Twenty-eight species from 17 parasite genera were found, including monogeneans (five Diplectanum spp., Sinodiplectanotrema sp., four …
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The prevalence and impact of internal parasites on the wild rabbit, Oryctolagus cuniculus (L.)
… age of rabbit (defined by rabbit weight), sex of rabbit, reproductive state, infection with myxomatosis and liver weight. The liver, stomach, small intestine and large intestine were removed and examined for the presence of cestode, protozoan and nematode parasites. Parasites were …
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Protozoi ed Elminti parassiti dei molluschi cefalopodi delle acque circostanti la Sardegna. Morfologia, sistematica, epidemiologia, possibile utilizzo dei parassiti come indicatori bioecologici
… the knowledge on the role of cephalopods in the host-parasite relationships is partial and frammentary, particularly in the Mediterranean Sea. This doctoral thesis was aimed to analyze the parasite fauna of 15 species and the orders Octopoda, Sepiida, Sepiolida, Myopsida, and Oegopsida, collected …