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Russian wheat aphid: a model for genomic plasticity and a challenge to breeders. 俄罗斯小麦蚜虫:基因组可塑性的模型和对育种者的挑战。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-19 DOI: 10.1111/1744-7917.70144
Astrid Jankielsohn, Vicky L Tolmay, Marlon-Schylor Luke le Roux, Lintle Mohase, Mpho S Mafa, Vittorio F Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna-Maria Botha
{"title":"Russian wheat aphid: a model for genomic plasticity and a challenge to breeders.","authors":"Astrid Jankielsohn, Vicky L Tolmay, Marlon-Schylor Luke le Roux, Lintle Mohase, Mpho S Mafa, Vittorio F Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna-Maria Botha","doi":"10.1111/1744-7917.70144","DOIUrl":"10.1111/1744-7917.70144","url":null,"abstract":"<p><p>Aphids (Hemiptera, Aphididae) belong to the class Insecta with about 5000 species worldwide. Despite extensive efforts with integrative management strategies, these pests have continued to adapt to selection pressure asserted by many control measures such as resistant host varieties and even insecticide spraying. Hence, knowledge gaps still exist with regards to aphid genomes and genomic function. This review aims to give a historical overview on the invasiveness of one of the economically important cereal pests, Diuraphis noxia (Kurdjumov), also commonly known as the Russian wheat aphid (RWA), as well as present some of the more recent findings in studies pertaining to the aphid-plant host interaction and highlight new developments in understanding the mechanisms underpinning the development of virulence in this cereal aphid.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144873017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Offspring performance does not explain oviposition preference in the leafminer Stigmella sorbi (Lepidoptera: Nepticulidae): a tri-trophic perspective. 后代的表现不能解释三营养视角下斑叶螨的产卵偏好。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-11 DOI: 10.1111/1744-7917.70142
Mikhail V Kozlov, Vitali Zverev
{"title":"Offspring performance does not explain oviposition preference in the leafminer Stigmella sorbi (Lepidoptera: Nepticulidae): a tri-trophic perspective.","authors":"Mikhail V Kozlov, Vitali Zverev","doi":"10.1111/1744-7917.70142","DOIUrl":"https://doi.org/10.1111/1744-7917.70142","url":null,"abstract":"<p><p>The non-random distribution of herbivorous insects on plants is often assumed adaptive. However, many studies fail to demonstrate this adaptiveness. To test the predictions of the preference-performance and optimal foraging hypotheses, while addressing adaptiveness of oviposition site selection for progenies (larvae) and females, respectively, we examined larval mine distributions (a proxy for egg distribution) of the pygmy moth Stigmella sorbi across shoots, compound leaves and leaflets of rowan (Sorbus aucuparia). The study was conducted near the subarctic town of Kirovsk, in northwestern Russia, from 1992 to 2007. Larvae survived best on long vegetative shoots, yet S. sorbi females showed no preference for shoot type, even though generative shoots are a potential carbohydrate source. They preferentially oviposited on basal leaflets, despite offspring mortality from both bottom-up and top-down factors being unaffected by leaflet position. This preference may benefit females rather than offspring by reducing sunlight and predator exposure. The presence of multiple S. sorbi mines on the same leaf did not affect parasitism rates or cocoon weight compared to solitary mines. However, clumping significantly increased the mortality of newly hatched larvae and explained the more even mine distribution among leaflets observed in high-density years. Our findings do not unequivocally support the preference-performance or apparency hypotheses. However, some patterns may appear adaptive when viewed through the lens of an optimal foraging strategy, proposing that S. sorbi maximizes overall fitness through oviposition behaviour that prioritizes female performance over offspring performance.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144816459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Control of fungus gnats Lycoriella sp. in mushroom (Agrocybe aegerita) cultivation with predatory mites Macrocheles glaber (Acari: Macrochelidae) and Stratiolaelaps scimitus (Acari: Laelapidae). 用捕食性螨(大螯螨螨科)、大螯螨(大螯螨科)和大螯螨(大螯螨科)防治蘑菇栽培中Lycoriella小蚊。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-11 DOI: 10.1111/1744-7917.70141
Qing-Xiu Lan, Mei-Fang Wen, Zheng-Hui Lu, Bing-Rong Ke, Qing-Hai Fan, Min-Sheng You
{"title":"Control of fungus gnats Lycoriella sp. in mushroom (Agrocybe aegerita) cultivation with predatory mites Macrocheles glaber (Acari: Macrochelidae) and Stratiolaelaps scimitus (Acari: Laelapidae).","authors":"Qing-Xiu Lan, Mei-Fang Wen, Zheng-Hui Lu, Bing-Rong Ke, Qing-Hai Fan, Min-Sheng You","doi":"10.1111/1744-7917.70141","DOIUrl":"https://doi.org/10.1111/1744-7917.70141","url":null,"abstract":"<p><p>Fungus gnats, Lycoriella spp. (Diptera: Sciaridae), are significant pests in edible mushroom cultivation worldwide. This study evaluates the effectiveness of 2 soil predatory mites, Stratiolaelaps scimitus (Laelapidae) and Macrocheles glaber (Macrochelidae), in controlling fungus gnats density on the mushroom Agrocybe aegerita. A controlled experiment was performed to examine and compare the effects of individual and combined releases of the 2 mite species on fungus gnats populations and their impact on mushroom yield. Results showed that both mite species significantly reduced fungus gnat populations as compared to untreated controls. However, S. scimitus exhibited superior control, effectively suppressing adult fungus gnats compared to the controls, single release of M. glaber and combined releases (M. glaber + S. scimitus). Mushroom yield was highest in the S. scimitus treatment, with no significant differences observed among other treatments and controls. Interestingly, neither mite species negatively impacted mushroom quality or budding. These findings highlight the significance of S. scimitus as a highly effective biological control agent for suppression of fungus gnats, thereby contributing to sustainable pest management practices in mushroom cultivation.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144816458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metabolic-developmental crosstalk: BmDHFR-mediated Hedgehog signaling orchestrates organ development and lipid homeostasis in Bombyx mori. 代谢-发育串:bmdhfr介导的刺猬信号调控家蚕的器官发育和脂质稳态。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-11 DOI: 10.1111/1744-7917.70149
Dan Liang, Song Jiang, Mengjun Xu, Yulong Yu, Daoming Wang, Yanjiao Huang, Xiaming Shi, Yan Meng
{"title":"Metabolic-developmental crosstalk: BmDHFR-mediated Hedgehog signaling orchestrates organ development and lipid homeostasis in Bombyx mori.","authors":"Dan Liang, Song Jiang, Mengjun Xu, Yulong Yu, Daoming Wang, Yanjiao Huang, Xiaming Shi, Yan Meng","doi":"10.1111/1744-7917.70149","DOIUrl":"https://doi.org/10.1111/1744-7917.70149","url":null,"abstract":"<p><p>Dihydrofolate reductase (DHFR), a pivotal enzyme in folate metabolism and DNA synthesis, is a well-established cancer therapeutic target. However, its non-canonical roles in developmental signaling and evolutionary-conserved functions in non-mammalian species remain poorly characterized. Using the lepidopteran model Bombyx mori, this study uncovered the pleiotropic functions of BmDHFR in midgut proliferation and lipid homeostasis through dual metabolic and Hedgehog (Hh) signaling regulation. Spatiotemporal profiling revealed ubiquitous BmDHFR expression during larval development. RNA interference-mediated BmDhfr knockdown suppressed midgut cell proliferation, validating its conserved role in DNA replication via thymidylate (deoxythymidine monophosphate [dTMP]) synthesis, while unexpectedly up-regulating the adipogenic marker BmAP2 and inducing lipid droplet hypertrophy-contrasting mammalian white adipocyte differentiation. Mechanistically, BmDHFR directly interacts with silkworm suppressor of fused (BmSUFU), the core suppressor of Hh signaling, forming a \"metabolism-signaling-cell fate\" axis that bridges folate metabolism to Hh pathway regulation. Cross-species comparisons highlight evolutionary divergence: Hh signaling inhibits insect adipogenesis but regulates mammalian adipocyte differentiation, suggesting adaptive remodeling of DHFR-Hh networks. This study advances the functional characterization of BmDHFR, elucidating evolutionary conservation and species-specific divergence in metabolic enzyme pleiotropy, and lays a foundation for drug screening and disease research based on insect models.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144821309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An ovary-targeted nucleic acid delivery system, OT-NADPS, efficiently mediates the generation of transgenic silkworms. 一种卵巢靶向核酸传递系统OT-NADPS有效介导转基因家蚕的产生。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-06 DOI: 10.1111/1744-7917.70132
Lan Hu, Zhan Wang, Pengchao Guo, Yuancheng Wang, Huawei Liu, Ping Zhao, Qingyou Xia
{"title":"An ovary-targeted nucleic acid delivery system, OT-NADPS, efficiently mediates the generation of transgenic silkworms.","authors":"Lan Hu, Zhan Wang, Pengchao Guo, Yuancheng Wang, Huawei Liu, Ping Zhao, Qingyou Xia","doi":"10.1111/1744-7917.70132","DOIUrl":"https://doi.org/10.1111/1744-7917.70132","url":null,"abstract":"<p><p>Transgenic technology is crucial for advancing various areas of biological research. In silkworms, the traditional transgenic method relies on embryo microinjection, which is a labor-intensive process with limited efficiency and high technical barriers. To overcome these challenges, we developed an Ovary-Targeted Nucleic Acid Delivery Peptide, OT-NADPS, based on the Receptor-Mediated Ovary Transduction of Cargo system (ReMOT) by innovative integration. OT-NADPS, which consists of a nucleic acid loading domain and an ovarian targeting peptide, demonstrates strong nucleic acid binding capacity and excellent binding stability. It can efficiently deliver nucleic acid to silkworm ovaries through pupae injection, thereby enabling the generation of transgenic silkworms. Using the OT-NADPS delivery system, transgenic silkworms were obtained with a success rate of 3.92%, comparable to the 2.0%-5.0% success rate range in traditional embryo microinjection. This novel method shows a lower technical threshold and a higher success rate, which is potentially applied to transgenic operations in multiple insect species.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-phylogeny and biogeography of the myrmecophilous beetle Paussus favieri (Carabidae, Paussinae) and its host ant Pheidole pallidula (Hymenoptera, Myrmicinae). 食蜜瓢虫Paussus favieri(茧蜂科,茧蜂科)及其寄主蚂蚁paidole pallidula(膜翅目,茧蜂科)的共系统发育与生物地理。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-06 DOI: 10.1111/1744-7917.70139
Davide Bergamaschi, Wendy Moore, Andrea Di Giulio
{"title":"Co-phylogeny and biogeography of the myrmecophilous beetle Paussus favieri (Carabidae, Paussinae) and its host ant Pheidole pallidula (Hymenoptera, Myrmicinae).","authors":"Davide Bergamaschi, Wendy Moore, Andrea Di Giulio","doi":"10.1111/1744-7917.70139","DOIUrl":"https://doi.org/10.1111/1744-7917.70139","url":null,"abstract":"<p><p>Strict patterns of co-phylogeny have seldom been observed, except among organisms and their symbionts with limited dispersal abilities. In this study, we investigate potential signs of co-phylogeny at the population level between an obligate myrmecophile, the beetle Paussus favieri, and its host ant, Pheidole pallidula. While neither species is physically dependent on the other, as both are fully winged and capable of independent dispersal, Paussus favieri relies entirely on Pheidole pallidula throughout its life cycle. These predatory beetles feed on ants and reproduce in their nests, where they lay eggs and their larvae develop. Therefore, the beetle cannot survive or reproduce without its host, making this an interesting system to explore potential co-phylogenetic patterns. In this paper, we infer population-level phylogenies for both species based on molecular sequence data and apply distance-based and event-based co-phylogenetic methods to search for signs of co-phylogeny, codivergence, or evidence of frequent host population shifts. Molecular phylogenetics reveals significant co-phylogenetic signals, but not phylogenetic congruence, using distance-based methods, as would be expected if the populations of both species shared a similar evolutionary or biogeographic history, without a strict evolutionary dependency. Co-phylogenetic signal without phylogenetic congruence is further explained by event-based methods with a history of codiversification and host population switching, typically occurring among nearby, closely related populations. We discuss the putative mechanisms that might have driven the co-phylogenetic signal between these strictly myrmecophilous beetles and their host ants with particular emphasis on a shared biogeographic scenario within the complex biogeographic history of the Mediterranean Basin.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The forewing-hindwing coupling of a black cicada Cryptotympana atrata (Hemiptera: Cicadidae): Functional morphology and kinematics. 黑蝉(半翅目:蝉科)前翅-后翅耦合:功能形态学和运动学。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-06 DOI: 10.1111/1744-7917.70146
Qian Li, Aihong Ji, Huan Shen, Guodong Qin, Binrui Wang
{"title":"The forewing-hindwing coupling of a black cicada Cryptotympana atrata (Hemiptera: Cicadidae): Functional morphology and kinematics.","authors":"Qian Li, Aihong Ji, Huan Shen, Guodong Qin, Binrui Wang","doi":"10.1111/1744-7917.70146","DOIUrl":"https://doi.org/10.1111/1744-7917.70146","url":null,"abstract":"<p><p>The wing structures and flapping dynamics of insects are diverse, which have important bionic implications for aircraft design. The black cicada, Cryptotympana atrata, which is a morphologically 4-winged insect, while its fore- and hindwings are coupled during flight. The functional morphology and kinematics in insects with coupled forewings-hindwings are still unclear. Further, although such wing coupling is common in nature, its impact on aerodynamic forces generated by flapping wings remains to be explored. In this study, we examine the micromorphology of the coupling structures on both fore- and hindwings of C. atrata. We analyze the kinematics and aerodynamics as well as variations in angle between the fore- and hindwings of C. atrata during tethered flight. The results show that fore- and hindwings are coupled through a hinge mechanism involving the rolled margin on the forewing and groove on the hindwing during flight. C. atrata follows a slender 0-shaped trajectory, and the dragged long trajectory line in pronation and supination is aimed to maintain stability. Due to the hinged coupling structure, there are significant changes in coupling angles during flight which influence wing twist, camber, and bending, ultimately enhancing aerodynamic forces by creating curved surfaces. This comprehensive study enhances our understanding of wing-coupling mechanisms and their functional significance for insects while providing valuable insights for future design and development of bionic coupled wings for flapping micro aerial vehicle systems.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functional characterization of Niemann-Pick proteins type C2 as odorant carriers in Neoseiulus barkeri olfactory perception. 尼曼-匹克蛋白C2型在巴氏新小猴嗅觉感知中作为气味载体的功能表征。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-05 DOI: 10.1111/1744-7917.70143
Haozhuo Yang, Tiandi Niu, Rongjiang Ma, Dong Xiang, Huai Liu, Hanqiu Chen, Yaying Li
{"title":"Functional characterization of Niemann-Pick proteins type C2 as odorant carriers in Neoseiulus barkeri olfactory perception.","authors":"Haozhuo Yang, Tiandi Niu, Rongjiang Ma, Dong Xiang, Huai Liu, Hanqiu Chen, Yaying Li","doi":"10.1111/1744-7917.70143","DOIUrl":"https://doi.org/10.1111/1744-7917.70143","url":null,"abstract":"<p><p>Arthropods utilize olfactory function to detect informational substances within their natural habitats, thereby facilitating essential life activities such as foraging, mating, and oviposition. Niemann-Pick protein type C2 (NPC2), a putative odorant carrier, has not been fully described in the olfactory perception of predatory mites. In this study, we characterized in detail the olfactory perception functions of NbNPC2-2 and NbNPC2-3 in the important predatory mite Neoseiulus barkeri. The results show that 2 NPC2 proteins, with 6 conserved cysteine sites, are significantly upregulated (by 2.93-fold for NbNPC2-2 and 1.66-fold for NbNPC2-3) with methyl salicylate (MeSA), an important herbivore-induced plant volatile (HIPV). Knocking down both NbNPC2-2 and NbNPC2-3 prevented N. barkeri from preferring pest-infested plants, and reduced their crawling speed to 2.92 and 3.12 mm/s under MeSA treatment. The affinity analysis revealed that NPC2-2 binds to HIPVs β-ionone, MeSA, and ocimene (Ki = 28.55 ± 2.12, 40.73 ± 3.89, and 45.15 ± 2.22, respectively), and NPC2-3 binds to 4-ethylbenzaldehyde (Ki = 51.67 ± 0.23). Molecular docking further confirmed hydrogen bonding interactions between NPC2-2, NPC2-3, and these HIPVs. These results indicated that NPC2-2 and NPC2-3 act as odor carriers involved in the olfactory perception of mites toward HIPVs. This enhances understanding of the molecular mechanism of phytoseiid olfaction.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144784171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Samia ricini: The promising large host eggs outclass Antheraea pernyi for rearing Trichogramma species. 麻蝇(Samia ricini):有希望的大型寄主卵,比柞蚕(Antheraea pernyi)更适合饲养赤眼蜂。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-04 DOI: 10.1111/1744-7917.70145
Ji-Zhi Xue, Yue-Hua Zhang, Asad Ali, Tian-Hao Li, Nicolas Desneux, Lian-Sheng Zang
{"title":"Samia ricini: The promising large host eggs outclass Antheraea pernyi for rearing Trichogramma species.","authors":"Ji-Zhi Xue, Yue-Hua Zhang, Asad Ali, Tian-Hao Li, Nicolas Desneux, Lian-Sheng Zang","doi":"10.1111/1744-7917.70145","DOIUrl":"https://doi.org/10.1111/1744-7917.70145","url":null,"abstract":"<p><p>Trichogramma, a globally recognized egg parasitoid, plays a pivotal role in the biological control of lepidopteran pests. However, its mass production relies heavily on the large eggs of the Chinese oak silkworm (Antheraea pernyi Guérin-Méneville, COS), which poses a limitation due to varying compatibilities among different Trichogramma species. This study investigates the potential of Eri silkworm (Samia ricini William Jones, ES) eggs as an alternative host by evaluating the performance of 6 Trichogramma species (T. chilonis, T. dendrolimi, T. japonicum, T. leucaniae, T. ostriniae, and T. pretiosum). The suitability of ES eggs for Trichogramma rearing was demonstrated through significant improvements in key fitness parameters. Notably, T. leucaniae and T. ostriniae exhibited higher parasitism rates on ES eggs (45% and 64%, respectively) compared to COS eggs (32% and 41%). Additionally, T. japonicum, which failed to parasitize COS eggs, achieved an 18% parasitism rate on ES eggs. Both T. chilonis and T. dendrolimi showed remarkable performance on ES eggs, with parasitism and emergence rates exceeding 80%. Furthermore, females reared on ES eggs demonstrated superior reproductive potential, including enhanced longevity and fecundity, compared to those reared on COS eggs. This study highlights ES eggs as a highly promising factitious host for the mass production of Trichogramma species. Their broad compatibility and ability to enhance parasitoid fitness underscore their potential to revolutionize biocontrol strategies against lepidopteran pests in agriculture and forestry.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144784172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-nucleus RNA sequencing reveals midgut cellular heterogeneity and transcriptional profiles in Bombyx mori cytoplasmic polyhedrosis virus infection. 单核 RNA 测序揭示了中肠细胞的异质性和多角体病毒感染的转录特征。
IF 3 1区 农林科学
Insect Science Pub Date : 2025-08-01 Epub Date: 2024-11-10 DOI: 10.1111/1744-7917.13464
Shigang Fei, Mian Muhammad Awais, Jinglei Zou, Junming Xia, Yeyuan Wang, Yibing Kong, Min Feng, Jingchen Sun
{"title":"Single-nucleus RNA sequencing reveals midgut cellular heterogeneity and transcriptional profiles in Bombyx mori cytoplasmic polyhedrosis virus infection.","authors":"Shigang Fei, Mian Muhammad Awais, Jinglei Zou, Junming Xia, Yeyuan Wang, Yibing Kong, Min Feng, Jingchen Sun","doi":"10.1111/1744-7917.13464","DOIUrl":"10.1111/1744-7917.13464","url":null,"abstract":"<p><p>The gut is not only used by insects as an organ for the digestion of food and absorption of nutrients but also as an important barrier against the invasion and proliferation of pathogenic microorganisms. Bombyx mori cytoplasmic polyhedrosis virus (BmCPV), an insect-specific virus, predominantly colonizes the midgut epithelial cells of the silkworm, thereby jeopardizing its normal growth. However, there is limited knowledge of the cellular immune responses to viral infection and whether the infection is promoted or inhibited by different types of cells in the silkworm midgut. In this study, we used single-nucleus RNA sequencing to identify representative enteroendocrine cells, enterocytes, and muscle cell types in the silkworm midgut. In addition, by analyzing the transcriptional profiles of various subpopulations in the infected and uninfected groups, we found that BmCPV infection suppresses the response of the antiviral pathways and induces the expression of BmHSP70, which plays a role in promoting BmCPV replication. However, certain immune genes in the midgut of the silkworm, such as BmLebocin3, were induced upon viral infection, and downregulation of BmLEB3 using RNA interference promoted BmCPV replication in the midgut of B. mori. These results suggest that viral immune evasion and active host resistance coexist in BmCPV-infected silkworms. We reveal the richness of cellular diversity in the midgut of B. mori larvae by single-nucleus RNA sequencing analysis and provide new insights into the complex interactions between the host and the virus at the single-cell level.</p>","PeriodicalId":13618,"journal":{"name":"Insect Science","volume":" ","pages":"1141-1154"},"PeriodicalIF":3.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142619630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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