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insectdevelopment, etc ; Drosophila melanogaster; cortex; ganglia; insects; larvae; mitosis; mushrooms; nerve tissue; neurogenesis; Show all 10 Subjects
Abstract:
... Neurogenesis is divided into two main stages: proliferation and differentiation. Neural stem cells were discovered in insects almost a century and a half ago, in 1885, by A.A. Korotneff who called them ganglion cells, while the term neuroblast was introduced by W.M. Wheeler in 1891. Neurogenesis was initially considered a singlestage process, and the smaller daughter cells of the neuroblast were b ...
insectdevelopment, etc ; Anticarsia gemmatalis; Spodoptera cosmioides; climate change; entomology; forests; pests; population growth; soybeans; temperature; voltinism; Brazil; Show all 12 Subjects
Abstract:
... Insect development is affected by temperature which in turn influences population growth. The thermal limits tolerated by insects vary depending on the species which can have important consequences for their voltinism in a climate‐changing world. This study used a multicriteria approach to select the best among six nonlinear models to describe the temperature‐dependent development rate of Anticars ...
... The larvae of insect herbivores feed on plants that may vary nutritionally (qualitatively and/or quantitatively) over the course of insect development. Plant quality may change in response to interactions with the biotic environment that in turn may affect development and biomass of the insects feeding on these plants. However, the larvae of many gregariously feeding herbivores feed on comparative ...
insectdevelopment, etc ; Bombyx mori; Locusta migratoria; chitin; eosin; hydrolysis; insect growth; insects; instars; peritrophic membrane; pest management; survival rate; Show all 12 Subjects
Abstract:
... Lytic polysaccharide monooxygenases (LPMOs) are important enzymes that boost the hydrolysis of recalcitrant polysaccharides, such as chitin. They are found extensively in different insect species and are classified as auxiliary activities family 15 (AA15) LPMOs (LPMO15). Some of them were identified from the insect midgut and proven to act on chitin. However, knowledge about their physiological ro ...
insectdevelopment, etc ; Bombus terrestris; air; air temperature; asymmetry; capital; ecosystems; flight; flowers; intraspecific variation; land use; pollination; pollinators; urbanization; Italy; Show all 15 Subjects
Abstract:
... The way urbanization shapes the intraspecific variation of pollinator functional traits is little understood. However, this topic is relevant for investigating ecosystem services and pollinator health. Here, we studied how urbanization affects the functional traits of workers in two bumblebee species (Bombus terrestris and B. pascuorum) sampled in 37 sites along a gradient of urbanization in North ...
insectdevelopment, etc ; Spodoptera frugiperda; abnormal development; biosynthesis; body length; cholesterol; ecdysis; gamma-aminobutyric acid receptors; insecticides; insects; mechanism of action; pests; Show all 12 Subjects
Abstract:
... Broflanilide is a novel insecticide with a unique mode of action on the insect GABA receptor and is registered worldwide for the control of agricultural pests. It shows high efficacy in controlling the fall armyworm (FAW) Spodoptera frugiperda, which is a destructive pest to various crops. FAW was exposed to sublethal concentrations of broflanilide to determine its impact on insect development. Su ...
... Chitinases are hydrolytic enzymes that play important roles in chitin degradation during the insect development process, and thus are considered as the potential targets for pest management. Here, we identified and characterized the group VII chitinase gene from health pest Musca domestica (MdCht2). We found that MdCht2 was 1932 bp in length with an open reading frame of 1530 bp, which encodes a p ...
... Periodic post‐embryonic changes in insects, including growth, development and metamorphosis, are strictly controlled by many compounds, including steroid hormones. The biosynthesis and clearance of 20‐hydroxyecdysone (20E), the major active form of the insect steroid hormone ecdysone, result in titer fluctuations that help control insect development. The inactivation of 20E in the silkworm Bombyx ...
insectdevelopment, etc ; Anopheles gambiae; amino acids; chemical structure; computer simulation; death; ecdysis; insecticides; insects; ligands; malaria; neuropeptides; nuclear magnetic resonance spectroscopy; reproduction; Show all 14 Subjects
Abstract:
... Infections by mosquito‐borne diseases represent one of the leading causes of death in third world countries. The rapid progression of resistance to conventional insecticide causes a significant threat to the highly efficient preventive methods currently in place. Insect neuropeptidergic system offers potential targets to control the insect vectors. The essential roles of the neuropeptide ecdysis t ...
... Upon infection, the phenoloxidase system in arthropods is rapidly mobilized and constitutes a major defense system against invaders. The activation of the key enzymes prophenoloxidase (PPO) and their action in immunity through melanization and encapsulation of foreign bodies in hemolymph has been described in many insects. On the other hand, little is known about PPOs involvement in other essentia ...
insectdevelopment, etc ; Drosophila melanogaster; Henosepilachna vigintioctopunctata; RNA interference; biosynthesis; bone morphogenetic proteins; digestive system; ecdysteroidogenesis; ecdysterone; genes; herbivores; juvenile hormones; larvae; larval development; metamorphosis; Show all 15 Subjects
Abstract:
... Insect development is regulated by a combination of juvenile hormone (JH) and 20-hydroxyecdysone (20E). Production of both JH and 20E is regulated by transforming growth factor-β (TGFβ) signaling. TGFβ can be classified into two branches, the Activin and Bone Morphogenetic Protein (BMP) pathways. In Drosophila melanogaster, BMP signaling is critical for JH synthesis, whereas Activin signal is requ ...
insectdevelopment, etc ; Helianthus annuus; Tenebrio molitor; diet; eicosapentaenoic acid; fatty acid composition; fish oils; gas chromatography; linseed; nutrient content; physiological regulation; principal component analysis; soybean meal; wheat bran; Show all 14 Subjects
Abstract:
... Several species of insects have been indicated as suitable and alternative sources of nutrients for humans and animals. A crucial aspect is that their nutritional composition and development time can be influenced by the substrate used for rearing. The main objective of this study is to evaluate how the fatty acid composition of Tenebrio molitor (Coleoptera: Tenebrionidae) larvae changes with diff ...
insectdevelopment, etc ; Bactrocera tryoni; Ceratitis capitata; brown sugar; cherries; eggs; fruit flies; fruits; insect infestations; instars; maceration; market access; oviposition; pests; plant protection; pomace; risk; soil; sugars; Queensland; Show all 20 Subjects
Abstract:
... Sugar flotation procedures have been used for many years to separate insects from soil and other substrates. In this study we investigated whether brown sugar flotation (BSF) could be used for detecting eggs and larvae of Bactrocera tryoni (Froggatt) and Ceratitis capitata (Wiedemann) in cherries. Our first study involved both species and combined BSF with either manually or mechanically crushed f ...
insectdevelopment, etc ; Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; RNA interference; body weight; chitin; dose response; double-stranded RNA; genes; greening disease; hexokinase; messenger RNA; mortality; pest control; pests; Show all 16 Subjects
Abstract:
... BACKGROUND: Silencing specific genes in pests using RNA interference (RNAi) technology is a promising new pest‐control strategy. The Asian citrus psyllid, Diaphorina citri Kuwayama, is the most important citrus pest because it transmits Candidatus Liberibacter asiaticus, which causes huanglongbing. Chitin is essential for insect development, and enzymes in this pathway are attractive targets for p ...
insectdevelopment, etc ; insects; mechanism of action; plasticity; reproduction; Show all 5 Subjects
Abstract:
... Only a small subset of all the transcribed RNAs are used as a template for protein translation, whereas RNA molecules that are not translated play a very important role as regulatory non-coding RNAs (ncRNAs). Besides traditionally known RNAs (ribosomal and transfer RNAs), ncRNAs also include small non-coding RNAs (sncRNAs) and long non-coding RNAs (lncRNAs). The lncRNAs, which were initially thoug ...
insectdevelopment, etc ; Agrotis ipsilon; RNA interference; active sites; chitin; chitinase; complementary DNA; double-stranded RNA; extracellular matrix; genes; integument; larvae; larval development; metabolism; midgut; mortality; pest management; pupae; transcriptome; Show all 19 Subjects
Abstract:
... BACKGROUND: Chitin is a major component in the extracellular matrix of insects, and its metabolism largely affects insect development and molting. As essential degradative enzymes, chitinases are encoded by multiple genes that differ in size, expression pattern and function in insects. However, our limited knowledge on the functions of different chitinases in Agrotis ipsilon has prevented our appl ...
... BACKGROUND: Chitin, a major component of insect cuticles, plays a critical role in insect molting and morphogenesis. Thus, coordination of chitin remodeling during insect development requires tight transcriptional control of the chitin metabolism genes involved in chitin synthesis, assembly and degradation. However, the molecular mechanism underlying transcriptional coordination of chitin metaboli ...
insectdevelopment, etc ; Drosophila melanogaster; adipokines; fat body; homeostasis; metabolism; Show all 6 Subjects
Abstract:
... Under conditions of nutritional and environmental stress, organismal homeostasis is preserved through inter-communication between multiple organs. To do so, higher organisms have developed a system of interorgan communication through which one tissue can affect the metabolism, activity or fate of remote organs, tissues or cells. In this review, we discuss the latest findings emphasizing Drosophila ...
insectdevelopment, etc ; honey; honey bees; insect growth; longevity; reproduction; Show all 6 Subjects
Abstract:
... Honey bees are valued pollinators of agricultural crops, and heavy losses reported by beekeepers have spurred efforts to identify causes. As social insects, threats to honey bees should be assessed by evaluating the effects of stress on the long-term health and productivity of the entire colony. Insect growth disruptors are a class of pesticides encountered by honey bees that target pathways invol ...
insectdevelopment, etc ; Cynipidae; Eucalyptus; Leptocybe invasa; oviposition; pest management; wasps; Show all 7 Subjects
Abstract:
... BACKGROUND: The significance of morphological responses of hosts on susceptibility against gall‐inducing insects is relatively unknown, especially in planted forests. Here, we investigate the temporal morphological responses (gall development) induced by the invasive gall wasp Leptocybe invasa and the subsequent insect development in two Eucalyptus clones. RESULTS: Our results identified a novel s ...