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 95 for “"larval stage"”.
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Incorporación de vitamina C en dietas larvarias y su implicación en el desarrollo de Solea senegalensis
… for marine fish, vitamin C, during the larval stage. The study was carried out using an important aquaculture species, the Senegalese sole. Technologies were developed that allowed controlled dosage and form of presentation of vitamin C. An important part of the thesis was devoted to …
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Studies of programmed cell death in the nematode caenorhabditis elegans
… B.arapaav are generated during the late third-larval stage. During the early fourth-larval stage one of these cells undergoes programmed cell death, and the other survives. These two cells form an equivalence group; the decision of which cell dies and which survives is stochastic. The cell that …
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Characterizing physiological and genetic differences in the early immune response to Haemonchus contortus in resistant and susceptible sheep
… contortus during the peri-parturient period and larval stage of infection. Identification of immunological events resulting in parasite resistance in St. Croix hair sheep may provide better targets for differential gene expression analysis and eventual discovery of selectable markers for parasite …
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Modeling the processes affecting larval haddock (Melanogrammus aeglefinus) survival on Georges Bank
… and processes occurring during the planktonic larval stage. Spatially explicit coupled biological-physical individual-based models are ideal for studying the processes of feeding, growth, and predation during the larval stage. This thesis sought new insights into the mechanisms controlling the …
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Modeling the processes affecting larval haddock (Melanogrammus aeglefinus) survival on Georges Bank
… and processes occurring during the planktonic larval stage. Spatially explicit coupled biological-physical individual-based models are ideal for studying the processes of feeding, growth, and predation during the larval stage. This thesis sought new insights into the mechanisms controlling the …
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The toxic effects of the pesticide lindane on the early developmental stages of the fathead minnow
… the effects of the pesticide on the early life stages of the fish, and to evaluate the suitability of these stages as indicators of contaminated environments. Egg, yolk-sac and larval stages that had been exposed to 300, 120, 90, 60, 30, 10, 5, and 0 μg/L of Lindane at 25°C exhibited a 14d-LC₅₀ …
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Toxicity of chlorpyrifos adsorbed on clay and humic acid to larval walleye
… activity, (2) determine the most sensitive life stage of walleye exposed to chlorpyrifos, (3) evaluate the bioavailability of chlorpyrifos adsorbed on humic acid (HA) and Panther Creek (PC) clay to larval walleye (Stizostedion vitreum), and (4) determine the toxicity of Cedar River sediments and …
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Impact of Light Pollution on Species Interactions
… fitness costs of light pollution on moths at the larval stage. I found that nocturnal generalist predators do not forage preferentially for larvae in streetlit or unlit areas along suburban prairie fragments. However, light pollution induces direct consequences for larvae and indirect negative …
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Biological insights into the parasitic nematode Heligmosomoides bakeri from bulk and single-cell transcriptomics
… The worm enters its host during its third larval stage and develops through another larval stage into adults that reside in the lumen of the small intestine to mate and lay their eggs. Unravelling these processes and other processes critical to H. bakeri survival could reveal new targets to …
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The Growth and Bioenergetics of <i>Callinectes sapidus</i> Larvae and the Effects of Diet Quality on Larval Physiology
… growth, and feeding rates were measured for each larval stage and the megalopal stage. The energy partitioned to molts and specific dynamic action was also measured. T</p> <p>he ω3 PUFA enriched diet resulted in a lower respiration rate when compared to the unsupplemented diet, but there was …
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Some aspects of the biology of the tobacco beetle, Lasioderma serricorne (F), (Coleoptera : Anobiidae)
… importance. In addition to cured tobacco, the larval stage attacks a great variety of other materials of both plant and animal origin. Much of the work done on the biology of this beetle is fragmentary and not precisely recorded. The present author has aimed at correlating as much of the …
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Towards mapping spatial transcriptome of an entire vertebrate brain
… their modest brain size and transparency in the larval stage, serve as a model organism for whole-brain in vivo imaging and modeling. While calcium imaging generates substantial amounts of neural activity data, the lack of molecular information for individual neurons in a purely activity readout …
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Impact of self-fertilization on fecundity, the timing of first reproduction, and population genetic structure: Is a mate worth the wait?
… high fecundity, with the lack of a dispersive larval stage and low levels of gene flow.
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Nematicidal, antimicrobial and acaricidal activity of plant secondary metabolites
… containing necrodane-type monoterpenes against larval stage of Hyalomma lusitanicum and Rhipicephalus sanguineus.
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Diplostomulum trituri (Trematoda: diplostomatidae) a larval strigeoid trematode in the brain and cranial case of the newt, Notophthalmus viridescens (Rafinesque)
… 5 to 30. The attempts to recover the encysted larval stage and/or adult failed using Japanese quail, mallard ducks, raccoon, muskrat, opossum, domestic cat, and fish from families Salmonidae, Catostomidae, Cyprinidae, and Centrarchidae as experimental definitive hosts for <u>Diplostomulum …
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Effect of Dietary Restriction on Muscle Performance in Drosophila
… raised in high yeast concentration both from larval stage or adult stage had shorter lifespan without any reduced jumping performance.
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The Impact of Insulin signalling on a C. elegans Alzheimer’s Disease Model
… similar impairments observed in the earliest larval stage (L1), such as reduced starvation survival and motility. These results challenge the prevailing notion that AD's impact is predominantly a consequence of aging and instead suggest that early-life interventions in the IIS pathway could …
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Behavior of wild-type and laboratory-adapted cabbage loopers, Tr̲ich̲o̲pl̲u̲s̲i̲a n̲i (Hübner) (Lepidoptera:Noctuidae)
… was further examined to determine the effect of larval crowding and starvation on the above criteria. The laboratory-adapted colony displayed a shorter development time and higher immature mortality than the wild-type colony. Differences in flight activity between and within the colonies were …
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An Invasive Species as a Threat to Native Biodiversity: Larval Competition Between Native Anurans and an Invasive Treefrog
… impacting native anurans at multiple life stages. In anurans, competition at the larval stage can decrease adult fitness through slower development and smaller size at metamorphosis, ultimately decreasing recruitment rates. To examine the potential impacts of <em>O. septentrionalis</em> at …
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Aspects of the biology, behavior, bionomics, and control of immature stages of the cat flea Ctenocephalides felis felis (Bouche) (Siphonaptera: Pulicidae) in the domiciliary environment
The larval stage of the cat flea, Ctenocephalides felis felis (Bouche), was found to exhibit behaviors that were conducive to its security in carpet. Larvae exhibited positive geotactic, and negative phototactic behaviors. This resulted in the larvae spending greater than 80% of their time at the …
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