Forecasting habitat suitability and niche shifts of two global maize pests: Ostrinia furnacalis and Ostrinia nubilalis (Lepidoptera: Crambidae)

Pest Management Science, Journal Year: 2024, Volume and Issue: 80(10), P. 5286 - 5298

Published: June 25, 2024

Abstract BACKGROUND Ostrinia furnacalis (ACB) and nubilalis (ECB) are devastating pests of the agricultural crop maize worldwide. However, little is known about their potential distribution niche shifts during global invasion. Since long‐term selection to past climate variability has shaped historical breadth, such may provide an alternative basis for understanding responses present future change. By integrating unfilling, stability, expansion situations into a single framework, our study quantifies patterns shift in spatial these two different periods. RESULTS Our results show that overall suitable habitats ACB ECB decrease but highly extremely habitat will become more widespread, suggesting insects occur frequently specific regions. Compared with Southeast Asia Australia, China exhibited rather than unfilling. For ECB, initial niches have tendency be retained Eurasia despite there also being North America. The equivalency similarity test further indicate were common both survival regions colonization new changes paleoclimate associated climatic changes. CONCLUSIONS These findings improve ecological characteristics worldwide, useful development prevention control strategies insect © 2024 Society Chemical Industry.

Language: Английский

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Functional polymorphism of CYCLE underlies the diapause variation in moths

Science, Journal Year: 2025, Volume and Issue: 388(6750)

Published: May 29, 2025

Diapause is a common seasonal adaptive strategy that regulates annual timing in insects. Very few causal loci underlying diapause variation have yet been identified. By leveraging cross-mapping and genome-wide association analysis, we identified the N terminus of clock protein CYCLE as major effector embryonic differences silk moth. We found nondiapause phenotype polyvoltine strains results from specific deletion disrupts an alternative isoform CYCLE. further demonstrated different isoforms contribute to functional diversity modulating circadian rhythms diapause, which has preserved Lepidoptera for at least 110 million years. Our study proposes model explains how phenotypes can evolve rapidly without affecting related essential functions.

Language: Английский

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Theperiodgene alters daily and seasonal timing inOstrinia nubilalis

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

Published: Nov. 3, 2024

Summary The timing of insects’ daily (feeding, movement) and seasonal (diapause, migration) rhythms affects their population dynamics distribution. Yet, despite implications for insect conservation pest management, the genetic mechanisms underlying variation in are poorly understood. Prior research European corn borer moth ( Ostrinia nubilalis ) associated ecotype differences diapause activity with at circadian clock gene period per ). Here, we demonstrate that populations divergent allele frequencies exhibit behavior, development, expression genes. Specifically, later shortened were a reduction delay abundance cycling mRNA. CRISPR/Cas9-mediated mutagenesis revealed and/or an intact network essential appropriate behavior responsiveness. Furthermore, dosage heterozygous mutants -/+ pleiotropically decreased incidence, post-diapause delayed manner phenotypically reminiscent wild-type individuals. Altogether, this combination observational experimental strongly suggests is master regulator biological may contribute to observed life cycle between bivoltine (two generation) univoltine (one O. . Highlights Natural ecotypes genotypes differ responses photoperiod Later activity, reduced shorter development mRNA short-day recognition Reduced locomotor

Language: Английский

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