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Showing 1 to 20 of 66 for “"blood meal"”.
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Blood Meal Analysis for the Detection and Identification of Host DNA in the Gut Contents of Ornithodoros coriaceus
… the disease. Research into the composition of blood meals of arthropod vectors has been shown to provide evidence to link vector species to specific hosts which can be used to determine possible disease reservoirs. To determine if host identification through blood meal analysis could be …
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Culicoides smulkiųjų mašalų (Diptera: Ceratopogonidae) mitybos analizė /
… from several study sites in Lithuania, got their blood meal from as well as to determine ornithophilic and mammalophilic species. A total of 3468 Culicoides females were collected from 2021-2023year results. In total, 258 (7.4%) of them were engorged and vertebrate DNA was successfully amplified …
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Effect of energy and undegraded intake protein on growth and feed efficiency of growing Holstein heifers
… .S9 or .91 kg ADG), and source of UIP (blood meal or combination protein supplement). Trial one was a 2x2 factorial, with two levels of energy and UIP. High UIP was achieved with blood meal supplementation. From 6-13 mo of age (phase I), high energy increased ADG and DMI, and high UIP …
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Effect of dietary protein degradability and fat on rumen, blood and milk components of Jersey and Holstein cows
… degradability and supplemental fat on rumen, blood, and milk components. Diet dry matter contained 16% CP with two levels of rumen undegradable protein (RUP) obtained by substituting blood meal for soybean meal. Treatments were 29% RUP, 0% added fat; 29% RUP, 2.7% added fat (Calcium soaps of …
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Estudos sobre a biologia de flebótomos, vetores de Leishmanioses - Lutzomyia intermedia Lutz & Neiva, 1912 e Lutzomyia longipalpis Lutz & Neiva, 1912 - em condições experimentais
… span and tolerance of females to the absence of blood meal; resistance of immature stages to low ternperature and to immersion in water. The l ife span of the two species was similar; both survived the first oviposition and were able to feed again on blood; both developed better when the females …
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An Evaluation of Bed Bug (Cimex lectularius L.) Host Location and Aggregation Behavior
… circadian activities after successfully taking a blood meal or failing to take a blood meal. Unfed bed bugs continued to search for a host throughout the night until aggregating together 2 hours prior to photophase. Alternatively, fed bed bugs immediately aggregated together within 30 minutes of a …
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Investigating the role of the Apicoplast in Plasmodium falciparum Gametocyte Stages
… vector will ingest mature gametocytes during a blood meal. Sexual reproduction will occur in the midgut, leading to the production of sporozoites that will migrate to the salivary gland. The sporozoites will be injected to another human host during the next blood meal consequently, transmitting …
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Molecular analysis of La Crosse virus transcription and replication in host cells
… in the mosquito following an infectious blood meal. Indeed, LAC virus is maintained in nature through transovarial transmission from an infected female mosquito to her progeny. The potential molecular basis of these long-term, persistent, nonpathogenic infections was investigated in this …
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The Neuropeptide Regulation of Host-Seeking Behavior in Aedes Aegypti Mosquitoes
… of a mosquito to locate a human host for a blood meal. Currently, the mechanistic basis of host-seeking and its regulation remain incompletely understood. Although it is known that mosquitoes require human odor cues to locate a human host, the critical odor components and associated …
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The Behaviour and Ecology of Mosquito Vectors
… Despite this, it was possible to artificially blood-feed and have them oviposit viable egg rafts, which hatched and developed into 4th instar larvae. Larvae and pupae collected from the field were also able to successfully pupate and emerge into adult mosquitoes. Other aspects: such as …
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La Crosse Virus in Southwestern Virginia: Role of Exotic Mosquito Species and Effect of Virus Infection on Feeding
… preferences, effect of virus infection on blood-feeding behavior, and compare the efficacy of various methods to determine minimum infection rates of vectors. In laboratory studies of oviposition preference, only Ae. japonicus demonstrated a preference when presented with preexisting eggs. …
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Infection and transmission of West Nile virus by Ochlerotatus triseriatus (Diptera: Culicidae) in the laboratory
… p. pipiens were determined following WNV viremic blood meals ranging from 10⁴·⁰ to 10⁸·² PFU/ml. The minimum blood meal titer to infect Oc. triseriatus was 10⁴·³ PFU/ml, and it was 10⁴·⁰ PFU/ml for Cx. p. pipiens. West Nile virus infection rates in both species significantly increased as the …
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Direct and indirect effects of native and invasive plants on mosquito ecology
… sources, and altering communities of wildlife blood-meal hosts. This dissertation examines direct and indirect effects of understory shrubs, including species both native and invasive to North America, on the ecology of Culex pipiens, an important vector of West Nile virus in the northeastern …
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<i>Plasmodium</i>-Induced Nitrosative Stress in <i>Anopheles stephensi</i>: The Cost of Host Defense
… h following a <i>Plasmodium berghei</i>-infected blood meal. ·NO reacts readily with other biocompounds forming a variety of reactive nitrogen intermediates (RNIs) that may impose a nitrosative stress. These RNIs are proposed to be responsible for the AsNOS-dependent inhibition of …
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Analysis of the feeding behaviour of the mosquito Culex pipiens L. (Diptera: Culicidae) in relation to West Nile virus
… literature review describe the life cycle and blood feeding behaviours ofmosquitoes so that baseline data ofmosquito biology are established. In addition to explaining how and why a mosquito blood feeds, the section on "Blood Meal Analysis" describes the different methods for determining the …
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Non-Canonical Odor Coding Ensures Robust Mosquito Attraction to Humans
… bite, and they do so because they require a blood-meal for reproduction. Aedes aegypti prefer to bite human hosts, which contributes to their effectiveness as a deadly disease vector. Mosquitoes rely heavily on chemosensory cues, including carbon dioxide (CO2) emitted from breath and human …
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Underlying mechanisms of juvenile hormone (JH) and its analog in regulating mosquito reproduction
… sites at multiple time points before and after a blood meal. In addition to known JH-regulated genes, we identified the binding of Kr-h1 to several genes that are controlled by the insect steroid hormone 20-hydroxyecdysone (20E). Kr-h1 seemed to have different roles in regulating the …
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Transcriptional regulation of mosquito oogenesis
… between the nutrient content of the vertebrate blood meal and activation of mosquito egg development. In particular, the target of rapamycin (TOR) serine/threonine protein kinase is a central regulator of nutritional signaling, and we examined the roles of TOR and its downstream target, S6K, in …
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Host Attraction and Host Selection in the Family Corethrellidae (Wood And Borkent) (Diptera)
… were identified to species based on blood meal analysis. Using flies collected over six years at two locations in the SE USA, the host species data were compared to potential host abundance. Host feeding patterns did not reflect host attraction behaviors. Overall, phonotactic …
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Epidemiological role of indigenous dogs in the transmission of animal and human African trypanosomiasis in Zambia: a case study of dogs from Mambwe District
… found 70% of tsetse flies trypanosome positive. Blood meal analysis of 217 tsetse flies found DNA linked to humans (64.1%), wildlife (31.8%), cattle (2.3%), and dogs (1.8%). In conclusion, the results suggest that dogs acquire and maintain trypanosomes long enough for them to be potential …
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