Results 41 to 50 of about 7,892 (198)

Transcriptomic and proteomic analysis of Locusta migratoria eggs at different embryonic stages: Comparison for diapause and non-diapause regimes

Journal of Integrative Agriculture, 2017
: Temperate-zone insects typically survive winter by entering diapause. Although many aspects of insect diapause have been studied, the underlying molecular mechanism of insect diapause is not well understood.
Kun HAO, Jie WANG, Xiong-bing TU, Douglas W. Whitman, Ze-hua ZHANG   +4 more
doaj   +1 more source

Effects of bioinsecticide exposure route on aphids and their natural enemies in oilseed rape

Pest Management Science, EarlyView.
Fatty acids, silicone polymers and surfactants reduced aphid numbers but caused natural enemy mortality under direct exposure, while minimal residual activity suggests potential for targeted, compatible use in integrated pest management. Abstract BACKGROUND Myzus persicae Sulzer and Brevicoryne brassicae L.
Aimee J. Tonks, Tom W. Pope, Simon Cooper, Joe M. Roberts   +3 more
wiley   +1 more source

Seedling resistance and chemical defenses against Psylliodes chrysocephala: the roles of seed age and sinapinic acid in Sinapis alba and Brassica napus

Pest Management Science, EarlyView.
The cabbage stem flea beetle (Psylliodes chrysocephala) is a major pest of winter oilseed rape (Brassica napus). We tested B. napus and Sinapis alba seedlings for feeding resistance and underlying chemical defenses. S. alba was least damaged, while metabolite profiles revealed resistance‐linked compounds, highlighting breeding potential for insect ...
Daniel Rüde, Samantha M Cook, Bernd Ulber, Tobias Pöhnl, Michael Rostás   +4 more
wiley   +1 more source

Molecular mechanisms and comparative transcriptomics of diapause in two corn rootworm species (Diabrotica spp.)

Current Research in Insect Science
Diapause is a programmed developmental arrest that can occur at any developmental stage depending on species, but the mechanisms that underscore embryonic diapause are poorly understood.
Melise C. Lecheta, Chad Nielson, B. Wade French, Emily A.W. Nadeau, Nicholas M. Teets   +4 more
doaj   +1 more source

The sleeping beauty: how reproductive diapause affects hormone signaling, metabolism, immune response and somatic maintenance in Drosophila melanogaster. [PDF]

PLoS ONE, 2014
Some organisms can adapt to seasonal and other environmental challenges by entering a state of dormancy, diapause. Thus, insects exposed to decreased temperature and short photoperiod enter a state of arrested development, lowered metabolism, and ...
Olga I Kubrak, Lucie Kučerová, Ulrich Theopold, Dick R Nässel   +3 more
doaj   +1 more source

Acclimations to Cold and Warm Conditions Differently Affect the Energy Metabolism of Diapausing Larvae of the European Corn Borer Ostrinia nubilalis (Hbn.)

Frontiers in Physiology, 2021
The European corn borer Ostrinia nubilalis is a pest species, whose fifth instar larvae gradually develop cold hardiness during diapause. The physiological changes underlying diapause progression and cold hardiness development are still insufficiently ...
Željko D. Popović, Vítězslav Maier, Miloš Avramov, Iva Uzelac, Snežana Gošić-Dondo, Duško Blagojević, Vladimír Koštál   +6 more
doaj   +1 more source

Modelling the phenology of the grapevine leafhopper Erasmoneura vulnerata

Pest Management Science, EarlyView.
This study developed and validated a phenological population dynamics model for Erasmoneura vulnerata, integrating field monitoring and literature data to reproduce observed seasonal patterns across multiple sites. Abstract BACKGROUND Erasmoneura vulnerata (Fitch) (Hemiptera: Cicadellidae) is an invasive Nearctic leafhopper that has become a pest of ...
Andrea De Francesco, Andrea Pintossi, Anna Simonetto, Igor Daniel Weber, Paola Gervasio, Gianni Gilioli   +5 more
wiley   +1 more source

When your host shuts down: larval diapause impacts host-microbiome interactions in Nasonia vitripennis

Microbiome, 2021
Background The life cycles of many insect species include an obligatory or facultative diapause stage with arrested development and low metabolic activity as an overwintering strategy.
Jessica Dittmer, Robert M. Brucker
doaj   +1 more source

Distinct Gene Expression Patterns of Two Heat Shock Protein 70 Members During Development, Diapause, and Temperature Stress in the Freshwater Crustacean Daphnia magna

Frontiers in Cell and Developmental Biology, 2021
Dormancy is a lifecycle delay that allows organisms to escape suboptimal environmental conditions. As a genetically programmed type of dormancy, diapause is usually accompanied by metabolic depression and enhanced tolerance toward adverse environmental ...
Luxi Chen, Rocío Gómez, Linda C. Weiss
doaj   +1 more source

THE PHYSIOLOGY OF INSECT DIAPAUSE. VII. THE RESPIRATORY METABOLISM OF THE CECROPIA SILKWORM DURING DIAPAUSE AND DEVELOPMENT

The Biological Bulletin, 1953
The endocrine control of the pupal diapause of the Cecropia silkworm has been the principal theme of the preceding papers of this series. A considerable body of evidence is now at hand pointing to the prothoracic glands as the source of a hormone which reacts with the tissues to terminate the pupal diapause.
Schneiderman, Howard A, Williams, Carroll M   +1 more
openaire   +2 more sources