The German cockroach as a model in insect development and reproduction in an endocrine context

Advances in insect physiology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 47

Published: Jan. 1, 2024

Language: Английский

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Unveiling the Genetic Symphony: Harnessing CRISPR-Cas Genome Editing for Effective Insect Pest Management

Plants, Journal Year: 2023, Volume and Issue: 12(23), P. 3961 - 3961

Published: Nov. 24, 2023

Phytophagous insects pose a significant threat to global crop yield and food security. The need for increased agricultural output while reducing dependence on harmful synthetic insecticides necessitates the implementation of innovative methods. utilization CRISPR-Cas (Clustered regularly interspaced short palindromic repeats) technology develop insect pest-resistant plants is believed be highly effective approach in production expenses enhancing profitability farms. Insect genome research provides vital insights into gene functions, allowing better knowledge biology, adaptability, development targeted pest management disease prevention measures. editing technique has capability modify DNA insects, either trigger drive or overcome their resistance specific insecticides. advancements CRISPR its various applications have shown potential developing insect-resistant varieties other strategies through sustainable approach. This could consequences ensuring involves using create modified plants. article critically analyzed discussed challenges associated with exploring utilizing pressure

Language: Английский

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Lineage-specific head development in the coffin-headed cricket Loxoblemmus equestris links concentrated insect metamorphosis with novel trait evolution

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Background Lineage-specific adult structures form through modifications of preexisting juvenile body parts during postembryonic development in insects. It remains unclear how these novel traits originate from ancestral within the constrained plan. In coffin-headed cricket Loxoblemmus equestris, an rounded head shape directly transforms into a flattened, derived sex-specific manner. To understand origin traits, we investigated L. equestris as model lineage-specific novelty. Results Detailed two- and three-dimensional analyses developing revealed that sexually dimorphic epithelial patterns formed specific region, frons, preadult instar. The male-specific shapes are following final molt to adulthood even after timing shifts metamorphosis induced by RNA interference targeting evolutionarily conserved metamorphic gene network. Conclusions These findings demonstrate metamorphosis, led E93, locally relaxes plan constraint permit dramatic transformation modifying folding equestris. This highlights concentrated driver creates lineage- forms hexapod lineage.

Language: Английский

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Growth, development, and life history of a mass-reared edible insect, Gryllodes sigillatus (Orthoptera: Gryllidae)

Journal of Economic Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: April 18, 2025

Abstract Edible insects offer a viable alternative protein source to help meet the demands of growing population. Optimizing insect mass-rearing for food and feed production depends on an understanding life history. However, supporting data growth, development, reproduction from hatch adulthood is often not available many farmed insects, such as decorated cricket (Gryllodes sigillatus Walk.). Here, we describe history G. at 30 °C traits relevant colony management. Female crickets first reached after 29 d weighed 292.0 mg ± 74.09 mg, male 35 200.96 34.51 mg. Crickets had 7 nymphal instars most characterizable by head width. Sex was identified development ovipositors in females, wings both sexes. oviposited 56.74 31.77 eggs every 48 h over hatched 10.6 0.5 d. This information provides foundation start manage colony, conduct research performance, facilitate practitioners make informed decisions about rearing practices or identify arising issues. We highlight ways that fundamental biology can be informative optimizing reducing variability yield, informing future precision farming practices.

Language: Английский

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A High‐Quality Reference Genome and Comparative Genomics of the Widely Farmed Banded Cricket (Gryllodes sigillatus) Identifies Selective Breeding Targets

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(3)

Published: March 1, 2025

ABSTRACT Farmed insects have gained attention as an alternative, sustainable source of protein with a lower carbon footprint than traditional livestock. We present high‐quality reference genome for one the most commonly farmed insects, banded cricket Gryllodes sigillatus . In addition to its agricultural importance, G. is also model in behavioural and evolutionary ecology research on reproduction mating systems. report comparative genomic analyses that clarify cricket's history, identify gene family expansions contractions unique this lineage, associate these agriculturally important traits, targets genome‐assisted breeding efforts. The assembly plus accompanying serve foundational resources both applied basic insect farming biology, enabling researchers pinpoint trait‐associated genetic variants, unravel functional pathways governing those phenotypes, accelerate selective efforts increase efficacy large‐scale operations.

Language: Английский

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Growth, development, and life history of a mass-reared edible insect,Gryllodes sigillatus(Orthoptera: Gryllidae)

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract Insects provide a potential source of sustainable, alternative protein that can help meet the demands growing population. Efficient farming insects to this demand depends on an understanding insect life history. Yet, detailed information and expertise about single species are not always available for practitioners make informed decisions rearing practices or identify arising issues. The cricket ( Gryllodes sigillatus ) is commonly farmed human consumption animal feed, but few studies have characterized history throughout ontogeny. Here, we describe growth development G. from hatch adulthood quantify reproductive traits relevant mass-rearing colony management, including egg development. This provides foundation start manage conduct research performance. We highlight ways fundamental biology be informative optimizing growth, reducing variability in yield informing future precision practices.

Language: Английский

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Convergent and divergent neural circuit architectures that support acoustic communication

Frontiers in Neural Circuits, Journal Year: 2022, Volume and Issue: 16

Published: Nov. 17, 2022

Vocal communication is used across extant vertebrates, evolutionarily ancient, and been maintained, in many lineages. Here I review the neural circuit architectures that support intraspecific acoustic signaling representative anuran, mammalian avian species as well two invertebrates, fruit flies Hawaiian crickets. focus on hindbrain motor control motifs their ties to respiratory circuits, expression of receptors for gonadal steroids motor, sensory, limbic neurons divergent modalities evoke vocal responses. Hindbrain participants are highly conserved, while forebrain have diverged between anurans mammals, songbirds rodents. discuss roles natural sexual selection driving speciation, exaptation elements with ancestral respiration, producing sounds rhythmic features. Recent technical advances whole brain fMRI will enable real time imaging partners, tying auditory perception production.

Language: Английский

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Development of RNAi Methods for the Mormon Cricket, Anabrus simplex (Orthoptera: Tettigoniidae)

Insects, Journal Year: 2022, Volume and Issue: 13(8), P. 739 - 739

Published: Aug. 17, 2022

Mormon crickets are a major rangeland pest in the western United States and currently managed by targeted applications of non-specific chemical insecticides, which can potentially have negative effects on environment. In this study, we took first steps toward developing RNAi methods for as potential alternative to traditional broad-spectrum insecticides. To design an effective RNAi-based insecticide, generated de novo transcriptome cricket developed dsRNAs that could silence expression seven housekeeping genes. We then characterized efficiencies time-course knockdown using these dsRNAs, assessed their ability induce mortality. demonstrated it is possible elicit responses injection, but time course response varied according target genes tissue types. also show one reasons poor be presence dsRNA-degrading enzymes hemolymph. silencing cricket, more work needs done before effectively used population management method.

Language: Английский

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Orthoptera-specific target enrichment (OR-TE) probes resolve relationships over broad phylogenetic scales

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 13, 2024

Phylogenomic data are revolutionizing the field of insect phylogenetics. One most tenable and cost-effective methods generating phylogenomic is target enrichment, which has resulted in novel phylogenetic hypotheses revealed new insights into evolution. Orthoptera diverse order within Polyneoptera includes many evolutionarily ecologically interesting species. Still, as a whole lagged behind other major orders terms transitioning to phylogenomics. In this study, we developed an Orthoptera-specific enrichment (OR-TE) from 80 transcriptomes across Orthoptera. The probe set targets 1,828 loci genes exhibiting wide range evolutionary rates. utility was validated by 36 orthopteran species that had not previously been subjected studies. OR-TE captured average 1,009 tested taxa, resolving relationships broad scales. Our detailed documentation design bioinformatics process intended facilitate widespread adoption tool.

Language: Английский

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Orthoptera-specific target enrichment (OR-TE) probes resolve relationships over broad phylogenetic scales

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 13, 2024

Language: Английский

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