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 90 for “"Diapause"”.
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Diapause Termination in the Tobacco Hornworm: Deep Diapause, Diapause Maturity, Photoperiod and Wounding
Made available in DSpace on 2014-12-09T20:27:28Z (GMT). No. of bitstreams: 1 7001020.pdf: 5485210 bytes, checksum: cd7a217c3a54c14e612e567a4b437b93 (MD5) Previous issue date: 1969
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Metabolism and gene expression during diapause in athropods
Arthropods may enter diapause to escape environmental insult. Diapause is an endogenously controlled dormant state defined by developmental arrest and species-specific physiological changes (e.g., metabolic depression and upregulation of compounds that protect cell structure and function). Although …
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Metabolic downregulation during diapause in embryos of Artemia franciscana
… as they enter a state of hypometabolism termed diapause. The mechanisms by which such a respiratory depression is achieved remain unexplained. Evidence presented here shows that strategic enzymes involved in trehalose catabolism are inhibited during diapause, namely trehalase, hexokinase, …
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Physiology and Ecology of Pupal Diapause in Sarcophaga (Diptera: Sarcophagidae)
Made available in DSpace on 2014-12-11T18:05:38Z (GMT). No. of bitstreams: 1 7212136.pdf: 3209436 bytes, checksum: e7902630f1f11ba2564149bb20dce328 (MD5) Previous issue date: 1971
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Differential Expression of Genes During Diapause in the Flesh Fly, <em>Sarcophaga crassipalpis</em>.
… genes that are differentially regulated during diapause when compared with nondiapausing pupae in <em>Sarcophaga crassipalpis</em>. The results of a Suppression Subtractive Hybridization procedure was used to indentify genes that are differentially regulated in both diapause and nondiapausing …
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Genomic analysis of the diapause program in the West Nile virus vector Culex pipiens.
… ecological niches, including overwintering diapause, host biting preference, ecological niche distribution and reproductive strategies. Despite these similarities and differences historically being obstacles to the control of these mosquitoes, new molecular technologies have enabled us to …
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Implications of pre-diapause timing on Culex pipiens energetic reserve acquisition and overwintering success
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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Diapause biology, dispersal capabilities and insecticide use for Lygus lineolaris in Mid-Atlantic cotton systems
… The overwintering success and distribution of diapause survival L. lineolaris was measured on cover crops and weeds common in the Mid-Atlantic. Densities varied between weed and cultivated hosts, with L. lineolaris exhibiting increased survival in legumes compared to grains. Carbohydrate, lipid …
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The Effects of Photophase and Temperature on Diapause in Culex Pipiens Pipiens L. (Diptera: Culicidae)
Made available in DSpace on 2014-12-11T18:05:39Z (GMT). No. of bitstreams: 1 7212367.pdf: 4321667 bytes, checksum: 2391b2d817d5330ac73639a6e7960b71 (MD5) Previous issue date: 1971
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Cold Tolerance, Diapause and Winter Survival of the Brown Marmorated Stink Bug (<i>Halyomorpha halys</i>)
… bot nut within western populations. Winter diapause. Along with any potential links between diapause and cold tolerance remain unstudied. I examined characteristics of cold tolerance, diapause and overwintering sites to evaluate the factors contributing to the winter survival and, …
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Modeling the Impact Of Environmental Factors, Diapause and Control Strategies on Tick and Tick-Borne Disease Dynamics
… the effect of physiological features such as diapause, control strategies and the effect of environmental conditions on tick and tick-borne disease persistence and periodicity. The first model we propose is a two-patch tick population model in which we show how the tick reproduction number …
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Molecular Study of Diapause via Generation of Two CDNA Libraries and Partial Cloning of the Ecdysone Receptor in <em>Sarcophaga crassipalpis</em>.
… study was to begin a study characterizing the diapause state in <em>Sarcophaga crassipalpis</em>. Recent evidence suggests the diapause syndrome is a unique developmental state with its own set of genes expressed. Two cDNA libraries from the pupal brains of diapausing and nondiapausing <em>S. …
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Expression, Cloning, and Sequencing of Putative Insulin Signaling Genes Involved in Diapause in the Flesh Fly <em>Sarcophaga crassipalpis</em>.
<p>Diapause is a programmed developmental arrest that allows insects to survive harsh environmental conditions. The diapause state has been linked to the insulin signaling pathway. Insulin signaling has been associated with many physiological processes including aging. It is a working hypothesis …
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Studies on the toxicity of phosphine and methyl bromide to four moth pests of stored products with special emphasis of diapause
… involved in the induction and termination of diapause. Diapause was induced by low temperature and short daylength in fully grown larvae of E. elutella and P. interpunctella. Light intensities below 1 lux affected the induction of diapause in both species. In P. interpunctella, another factor …
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Effects of photoperiod, temperature, and diet on the development of the banded woollybear, Pyrrharctia (Isia) isabella (J. E. Smith) (Lepidoptera: Arctiidae).
… larvae were found to undergo an obligatory diapause in the Montreal-Ottawa area. Chilling was not an absolute requirement for diapause development, although mortality was high at higher temperatures. Diapausing larvae at 30°C were found not to be cold hardy. Increments in head capsule …
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Photoperiodic time measurement and seasonal adaptation of the southwestern corn borer, Diatraea grandiosella Dyar (Lepidoptera : Pyralidae)
… under winter conditions. In this respect, diapause may be a relatively recent adaptation in this insect as the result of its territorial expansion. Chippendale and Reddy (1973), and Chippendale et al. (1976) have studied the photoperiodic and temperature control of the seasonal life cycle …
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Environmental controls in the seasonal succession and synchronization of development in some pond species of damselflies (Odonata: Zygoptera)
… by a temperature and photoperiod influenced diapause in the penultimate and final instars, by differences in thermal growth coefficients in different instars during spring development, and by a threshold temperature for emergence higher than that for nymphal development. Members of the second …
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Comparative study of the ultrastructure and metabolism of the fat body of diapausing and nondiapausing larvae of the southwestern corn borer, Diatraea grandiosella Dyar (lepidoptera : pyralidae)
… (Dyar), is a pyralid moth which enters diapause as a mature larva and is bivoltine under Missouri conditions. The bionomics of the species have been reviewed in several articles including Davis et al. (1933) and Rolston (1955). The economic importance of the species is primarily related …
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