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Current opinion in insect science最新文献

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Olfactory coding in the mosquito antennal lobe: labeled lines or combinatorial code? 蚊子触角叶的嗅觉编码：标记线还是组合代码？
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-11-15 DOI: 10.1016/j.cois.2024.101299
Abin Thomas , Madhurima Roy , Nitin Gupta
{"title":"Olfactory coding in the mosquito antennal lobe: labeled lines or combinatorial code?","authors":"Abin Thomas ,&nbsp;Madhurima Roy ,&nbsp;Nitin Gupta","doi":"10.1016/j.cois.2024.101299","DOIUrl":"10.1016/j.cois.2024.101299","url":null,"abstract":"<div><div>Odors serve as important cues for many behaviors in mosquitoes, including host-seeking, foraging, and oviposition. They are detected by olfactory receptor neurons present in the sensory organs, whose axons take this signal to the antennal lobe, the first olfactory processing center in the insect brain. We review the organization and the functioning of the antennal lobe in mosquitoes, focusing on two populations of interneurons present there: the local neurons (LNs) and the projection neurons (PNs). LNs enable information processing in the antennal lobe by providing lateral inhibition and excitation. PNs carry the processed output to downstream neurons in the lateral horn and the mushroom body. We compare the ideas of labeled lines and combinatorial codes, and argue that the PN population encodes odors combinatorially. Throughout this review, we discuss the observations from <em>Aedes</em>, <em>Anopheles</em>, and <em>Culex</em> mosquitoes in the context of previous findings from <em>Drosophila</em> and other insects.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"68 ","pages":"Article 101299"},"PeriodicalIF":5.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643741","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
Genomics of insect natural enemies in agroecosystems 农业生态系统中昆虫天敌的基因组学。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-11-14 DOI: 10.1016/j.cois.2024.101298
Xinhai Ye , Yi Yang , Qi Fang , Gongyin Ye
{"title":"Genomics of insect natural enemies in agroecosystems","authors":"Xinhai Ye ,&nbsp;Yi Yang ,&nbsp;Qi Fang ,&nbsp;Gongyin Ye","doi":"10.1016/j.cois.2024.101298","DOIUrl":"10.1016/j.cois.2024.101298","url":null,"abstract":"<div><div>Currently, a wealth of genomic data are now accessible for numerous insect natural enemies, serving as valuable resources that deepen our understanding of the genetic basis of biocontrol traits in these organisms. We summarize the current state of genome sequencing and highlight candidate genes related to biocontrol traits that hold promise for genetic improvement. We also review the recent population genomic studies in biological control and the discovery of potential insecticidal genes in parasitoid wasps. Collectively, current genomic works have shown the powerful ability to identify candidate genes responsible for desirable traits or promising effectors. However, further functional study is necessary to gain a mechanistic understanding of these genes, and future efforts are also needed to develop suitable approaches to translate genomic insights into field applications.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"68 ","pages":"Article 101298"},"PeriodicalIF":5.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638663","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
Large-scale omics analyses of nutrition-responsive mechanisms of female germline stem cell proliferation and maintenance in Drosophila melanogaster 黑腹果蝇雌性生殖干细胞增殖和维持的营养响应机制的大规模全局分析。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-11-08 DOI: 10.1016/j.cois.2024.101296
Ryosuke Hayashi , Ryusuke Niwa
{"title":"Large-scale omics analyses of nutrition-responsive mechanisms of female germline stem cell proliferation and maintenance in Drosophila melanogaster","authors":"Ryosuke Hayashi ,&nbsp;Ryusuke Niwa","doi":"10.1016/j.cois.2024.101296","DOIUrl":"10.1016/j.cois.2024.101296","url":null,"abstract":"<div><div>Female germline stem cells (fGSCs) are essential for generating mature oocytes. In general, self-renewal and differentiation of fGSCs into germ cells are regulated by niche signals from neighboring niche cells. In addition, fGSCs and their niche cells are greatly influenced by physiological and environmental factors, especially nutritional status. To clarify molecular mechanisms involved in regulating fGSC proliferation and maintenance, the fruit fly <em>Drosophila melanogaster</em> has served as an excellent genetic model organism. In recent years, along with sophisticated genetic tools for <em>D. melanogaster</em>, large-scale transcriptome, proteome, and metabolome analyses have provided new insights into <em>D. melanogaster</em> fGSC biology. These large-scale analyses have identified new markers and regulators for <em>D. melanogaster</em> fGSCs, including <em>Netrin-A</em>, <em>Helical factor, eggplant, Gr43a</em>, and genes controlling the polyol pathway, some of which are involved in nutrient-responsive control of fGSC behavior.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101296"},"PeriodicalIF":5.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142616352","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
Repetitive DNAs: the ‘invisible’ regulators of insect adaptation and speciation 重复 DNA：昆虫适应和物种变异的 "隐形 "调节器。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-11-07 DOI: 10.1016/j.cois.2024.101295
Diogo C Cabral-de-Mello , Octavio M Palacios-Gimenez
{"title":"Repetitive DNAs: the ‘invisible’ regulators of insect adaptation and speciation","authors":"Diogo C Cabral-de-Mello ,&nbsp;Octavio M Palacios-Gimenez","doi":"10.1016/j.cois.2024.101295","DOIUrl":"10.1016/j.cois.2024.101295","url":null,"abstract":"<div><div>Like other eukaryotes, insect genomes contain a large portion of repetitive sequences, particularly transposable elements and satellite DNAs. This review highlights key studies on repetitive DNAs and examines their structural, functional, and evolutionary impact on insect genomes. Repetitive sequences promote genetic diversification through mutations and large-scale rearrangements, playing a crucial role in shaping genomic architecture, aiding organismal adaptation, and driving speciation. We also explore the influence of repeats in genome size variation and species incompatibilities, along with their contribution to adaptive phenotypes and gene regulation. Studying repetitive DNA in insects not only provides insights into basic genomic features but also offers valuable information for conservation strategies, pest control, and advancements in genetics, ecology, and evolutionary biology.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101295"},"PeriodicalIF":5.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142616353","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
Epigenetic processes in insect adaptation to environmental stress 昆虫适应环境压力的表观遗传过程。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-11-07 DOI: 10.1016/j.cois.2024.101294
Ayushi Gupta , Suresh Nair
{"title":"Epigenetic processes in insect adaptation to environmental stress","authors":"Ayushi Gupta ,&nbsp;Suresh Nair","doi":"10.1016/j.cois.2024.101294","DOIUrl":"10.1016/j.cois.2024.101294","url":null,"abstract":"<div><div>Insects exhibit remarkable adaptability to a wide range of environmental stressors, including temperature fluctuations, pathogens, and changes in diet. This adaptability is often driven by epigenetic processes, which regulate gene expression without altering the underlying DNA sequence. This review provides a comprehensive overview of these epigenetic processes in insect adaptation, highlighting their impact on development, behaviour, and stress resilience. Understanding these mechanisms is essential for pest management and conservation efforts, offering insights into the rapid adaptive capacity of insects. By examining recent studies on epigenetics in insects, we aim to elucidate the molecular underpinnings of their adaptation and suggest future research directions in this evolving field.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101294"},"PeriodicalIF":5.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142616351","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
Prospects on non-canonical olfaction in the mosquito and other organisms: why co-express? 蚊子和其他生物的非规范嗅觉前景：为什么要共同表达？
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-10-28 DOI: 10.1016/j.cois.2024.101291
Florencia Fernández-Chiappe , Gabriel K Ocker , Meg A Younger
{"title":"Prospects on non-canonical olfaction in the mosquito and other organisms: why co-express?","authors":"Florencia Fernández-Chiappe ,&nbsp;Gabriel K Ocker ,&nbsp;Meg A Younger","doi":"10.1016/j.cois.2024.101291","DOIUrl":"10.1016/j.cois.2024.101291","url":null,"abstract":"<div><div>The <em>Aedes aegypti</em> mosquito utilizes olfaction during the search for humans to bite. The attraction to human body odor is an innate behavior for this disease-vector mosquito. Many well-studied model species have olfactory systems that conform to a particular organization that is sometimes referred to as the ‘one-receptor-to-one-neuron’ organization because each sensory neuron expresses only a single type of olfactory receptor that imparts the neuron’s chemical selectivity. This sensory architecture has become the canon in the field. This review will focus on the recent finding that the olfactory system of <em>Ae. aegypti</em> has a different organization, with multiple olfactory receptors co-expressed in many of its olfactory sensory neurons. We will discuss the canonical organization and how this differs from the non-canonical organization, examine examples of non-canonical olfactory systems in other species, and discuss the possible roles of receptor co-expression in odor coding in the mosquito and other organisms.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101291"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142544296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Challenges of climate change and air pollution for volatile-mediated plant–parasitoid signalling 气候变化和空气污染对挥发性物质介导的植物寄生虫信号的挑战。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-10-28 DOI: 10.1016/j.cois.2024.101290
Delia M Pinto-Zevallos, James D Blande
{"title":"Challenges of climate change and air pollution for volatile-mediated plant–parasitoid signalling","authors":"Delia M Pinto-Zevallos,&nbsp;James D Blande","doi":"10.1016/j.cois.2024.101290","DOIUrl":"10.1016/j.cois.2024.101290","url":null,"abstract":"<div><div>Herbivore-induced plant volatiles (HIPVs) are reliable cues that parasitoids can use to locate host patches. Interactions mediated by plant volatile organic compounds (VOCs) are vulnerable to disturbance by predicted climate change and air pollution scenarios. Abiotic stress–induced VOCs may act as false signals to parasitoids. Air pollutants can disrupt signalling by degrading HIPVs at different rates and preventing the perception of olfactory signals by reducing the sensitivity of olfactory receptors or by occluding insect sensillae. As essential components of biological control programmes, efforts should be made to assess how different parasitoid species respond and adapt to HIPVs in predicted scenarios. Since providing parasitoid food sources is a promising practice for boosting biological control, parasitoid–flower interactions deserve attention.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"66 ","pages":"Article 101290"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142544294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decoding sex differences: how GABA shapes Drosophila behavior 解码性别差异：GABA 如何塑造果蝇的行为
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-10-28 DOI: 10.1016/j.cois.2024.101293
Saheli Sengupta , Edward A Kravitz
{"title":"Decoding sex differences: how GABA shapes Drosophila behavior","authors":"Saheli Sengupta ,&nbsp;Edward A Kravitz","doi":"10.1016/j.cois.2024.101293","DOIUrl":"10.1016/j.cois.2024.101293","url":null,"abstract":"<div><div>Sexually dimorphic behaviors are fundamental to the biology of many species, including fruit flies and humans. These behaviors are regulated primarily by sex-specific neural circuits or sex-specific modulation of shared neuronal substrates. In fruit flies, GABAergic neurotransmission plays a critical role in governing sexually dimorphic behaviors, such as courtship, copulation, and aggression. This review explores the intricate roles of GABAergic neurons in these behaviors and focuses on how sex-specific differences in GABAergic circuits contribute to their modulation and execution. By examining these mechanisms in <em>Drosophila</em>, we reveal broader implications for understanding sexual dimorphism in more complex organisms.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101293"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142544295","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
Editorial overview: Diverse actions of GABA in insect nervous systems 编辑综述：GABA 在昆虫神经系统中的多种作用
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-10-28 DOI: 10.1016/j.cois.2024.101292
Susan E Fahrbach
{"title":"Editorial overview: Diverse actions of GABA in insect nervous systems","authors":"Susan E Fahrbach","doi":"10.1016/j.cois.2024.101292","DOIUrl":"10.1016/j.cois.2024.101292","url":null,"abstract":"","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101292"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567658","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
Evolution of insect metamorphosis — an update 昆虫变态的进化--最新进展。
IF 5.8 1区 农林科学
Current opinion in insect science Pub Date : 2024-10-28 DOI: 10.1016/j.cois.2024.101289
Barbora Konopová
{"title":"Evolution of insect metamorphosis — an update","authors":"Barbora Konopová","doi":"10.1016/j.cois.2024.101289","DOIUrl":"10.1016/j.cois.2024.101289","url":null,"abstract":"<div><div>Metamorphosis endowed the insects with properties that enabled them to conquer the Earth. It is a hormonally controlled morphogenetic process that transforms the larva into the adult. Metamorphosis appeared with the origin of wings and flight. The sesquiterpenoid juvenile hormone (JH) suppresses wing morphogenesis and ensures that metamorphosis takes place at the right ontogenetic time. This review explores the origin of insect metamorphosis and the ancestral function of JH. Fossil record shows that the first Paleozoic winged insects had (hemimetabolous) metamorphosis, and their larvae were likely aquatic. In the primitive wingless silverfish that lacks metamorphosis, JH is essential for late embryogenesis and reproduction. JH production after the embryo dorsal closure promotes hatching and terminal tissue maturation.</div></div>","PeriodicalId":11038,"journal":{"name":"Current opinion in insect science","volume":"67 ","pages":"Article 101289"},"PeriodicalIF":5.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567676","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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