{"title":"Transboundary migration of Spodoptera frugiperda between China and the South-Southeast Asian region","authors":"Yifei Song, Haowen Zhang, Kongming Wu","doi":"10.1007/s10340-024-01833-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01833-7","url":null,"abstract":"<p>Since 2018, increased infestation by the fall armyworm <i>Spodoptera frugiperda</i> (FAW), an invasive pest worldwide, has negatively affected Asian crop production. Seasonal migratory activities drive regional outbreaks of this pest, but it remains unclear whether there is direct transboundary movement between East Asian and South Asian regions. From 2019 to 2023, FAW moth movements were monitored in Ruili of Yunnan Province, a city at the border area of China and Myanmar which is located in the insect migratory route between China and South Asian countries such as India and Bangladesh. The results showed that there was regular seasonal migratory activity of the pest, which could be divided into spring–summer (April–June) and autumn (October) peak migration periods. Further analysis using trajectory simulation model indicated that the FAW moths in spring–summer migration mostly come from Myanmar, the northeastern states of India and Bangladesh, and returns to the three countries in autumn from Southwest China. Our study clarifies the regional migration pattern of the FAW moth in China and South-Southeast Asia, providing a theoretical basis for constructing a regional early warning and management systems of this pest.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142138174","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}
Andrea Belén Dulbecco, Débora Elizabeth Moriconi, Fernanda Cingolani, Eliana Nieves, Luis Diambra, Nicolás Pedrini
{"title":"Exploring multigene families of odorant binding proteins and cytochrome P450 monooxygenases in the stink bug pest complex through comparative transcriptomics","authors":"Andrea Belén Dulbecco, Débora Elizabeth Moriconi, Fernanda Cingolani, Eliana Nieves, Luis Diambra, Nicolás Pedrini","doi":"10.1007/s10340-024-01831-9","DOIUrl":"https://doi.org/10.1007/s10340-024-01831-9","url":null,"abstract":"<p>The stink bugs <i>Edessa meditabunda</i>, <i>Piezodorus guildinii</i>, and <i>Diceraeus furcatus</i> (Hemiptera: Pentatomidae) are major pests in the Argentinean core area of soybean production. A detailed molecular genetics comprehension of how these insects perceive odorants and respond to semiochemicals and how they detoxify chemical pesticides and plant compounds are essential to improve their management strategies. We first assembled and compared the transcriptomes from <i>E. meditabunda</i>, <i>P. guildinii</i>, and <i>D. furcatus</i>. Regarding sequence similarity, <i>P. guildinii</i> and <i>D. furcatus</i> are closer to each other than <i>E. meditabunda.</i> Then, we characterized the multigene families of odorant binding proteins (OBPs) and cytochrome P450 monooxygenases (CYP). A total of 29, 38, and 39 unigenes encoding for OBP were obtained in <i>E. meditabunda</i>, <i>P. guildinii</i>, and <i>D. furcatus</i>, respectively, divided into classical OBPs and plus-C OBPs. A total of 72, 63, and 76 unigenes encoding for CYP were found in <i>E. meditabunda</i>, <i>P. guildinii</i>, and <i>D. furcatus</i>, respectively, which were further classified into 24 families and 47 subfamilies. On the other hand, we performed for the first time RNA interference in vivo by dsRNA injection in <i>E. meditabunda</i>, suggesting that this molecular tool can be exploited in future physiological and functional studies in this species.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142123711","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}
Annet Namuddu, Osnat Malka, Susan Seal, Sharon van Brunschot, Richard Kabaalu, Christopher Omongo, Shai Morin, John Colvin
{"title":"Is polyphagy of a specific cryptic Bemisia tabaci species driving the high whitefly populations on cassava in eastern Africa?","authors":"Annet Namuddu, Osnat Malka, Susan Seal, Sharon van Brunschot, Richard Kabaalu, Christopher Omongo, Shai Morin, John Colvin","doi":"10.1007/s10340-024-01832-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01832-8","url":null,"abstract":"<p>Since the 1990s, the cryptic whitefly (<i>Bemisia tabaci</i>) has been linked to severe viral disease pandemics affecting cassava, a crucial staple crop in eastern Africa. This surge in whitefly populations has also been observed in other crops and uncultivated plants. While previous surveys have connected the increase on cassava to two specific populations, SSA1 and SSA2, the dynamics behind the population growth on other plants remain unclear. Additionally, other <i>B</i>. <i>tabaci</i> species, including EA1, IO, MED, SSA9, and SSA10, have been found on cassava in smaller numbers. This study aimed to identify the host plants that support the growth and development of different <i>B</i>. <i>tabaci</i> in Uganda by collecting fourth-instar nymphs from cassava and 20 other common host plants. Host transfer experiments were conducted to test the ability of seven species (EA1, MEAM1, MED-Africa Silver Leafing (ASL), SSA1-subgroup1, SSA1-Hoslundia, SSA6, and SSA12) to develop on cassava. The identities of the nymphs were determined using partial <i>mitochondrial cytochrome oxidase 1</i> sequences. Twelve <i>B</i>. <i>tabaci</i> species were identified, including two novel species, based on the 3.5% nucleotide sequence divergence. Cassava was colonised by SSA1-SG1, SSA1-SG2, and SSA2. The most prevalent species were SSA1-SG1, MED-ASL, and SSA13, which were also the most polyphagous, colonising multiple plant species. Several whitefly species colonised specific weeds, such as <i>Aspilia africana</i> and <i>Commelina benghalensis</i>. The polyphagous nature of these species supports continuous habitats and virus reservoirs. Effective management of whitefly populations in eastern Africa requires an integrated approach that considers their polyphagy and the environmental factors sustaining host plants.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142123709","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}
June Gorrochategui-Ortega, Marta Muñoz-Colmenero, Egoitz Galartza, Andone Estonba, Iratxe Zarraonaindia
{"title":"Colonies under dysbiosis benefit from oxalic acid application: the role of landscape and beekeeping practices in microbiota response to treatment","authors":"June Gorrochategui-Ortega, Marta Muñoz-Colmenero, Egoitz Galartza, Andone Estonba, Iratxe Zarraonaindia","doi":"10.1007/s10340-024-01829-3","DOIUrl":"https://doi.org/10.1007/s10340-024-01829-3","url":null,"abstract":"<p>The <i>Varroa destructor</i> mite causes severe losses of <i>Apis mellifera</i> colonies<i>,</i> requiring recurring treatments. One such treatment is oxalic acid (OA), considered ecological. However, it is unclear whether OA affects the honey bee gut microbiota or other hive-associated microbiotas. Herein, we studied the effect of three OA treatments (trickling at 2.1% or 4.2%, and sublimation through Varrox®) upon microbial communities associated with workers’ gut, hive bee bread and pupae, sampled from conventionally or ecologically managed colonies under different anthropization levels (located in urban, rural or mountainous landscapes). We hypothesized that treatment with OA would impact the diversity and composition of bacteria and/or eukaryotic communities, and that the effect would be dose-dependent and specific to the beehive niche. Results showed that the microbiomes of apiaries under different anthropization levels and management strategies differed prior to OA application. Neither the bacterial nor the fungal communities of bee bread and pupae shifted due to OA treatment. Independent of the dosage and the application method (trickling or sublimation), OA induced slight compositional changes in the bacterial profiles of honeybee guts. Those changes were stronger the higher the anthropization (in colonies from urban areas under conventional management). OA treatment reduced the relative abundance of several pathogens, such as <i>Nosema ceranae,</i> and decreased the overall bacterial diversity down to values found in less anthropized colonies. Thus, our results suggest that, aside from managing Varroa infestations, OA could have beneficial effects for stressed colonies while not impairing honey bee resilience from a microbial point of view.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142123708","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}
T. D’Addabbo, S. Laquale, P. Veronico, P. Avato, M. P. Argentieri
{"title":"Nematicidal activity of the essential oil from Cinnamomum cassia and (E)-cinnamaldehyde against phytoparasitic nematodes","authors":"T. D’Addabbo, S. Laquale, P. Veronico, P. Avato, M. P. Argentieri","doi":"10.1007/s10340-024-01816-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01816-8","url":null,"abstract":"<p>The activity of <i>Cinnamomum cassia</i> essential oil (EO) and <i>(E)-</i>cinnamaldehyde was investigated on the phytoparasitic species <i>Meloidogyne incognita</i>, <i>Globodera rostochiensis</i>, and <i>Xiphinema index</i>. Juveniles (J2) or eggs of <i>M</i>. <i>incognita</i> and <i>G</i>. <i>rostochiensis</i> and mixed-age specimens of <i>X</i>. <i>index</i> were exposed to 12.5–100 µg mL<sup>−1</sup> concentrations of the two products. The suppressiveness of soil treatments with 100–800 mg kg<sup>−1</sup> soil rates of the <i>C. cassia</i> EO and <i>(E)-</i>cinnamaldehyde to <i>M. incognita</i> and <i>G. rostochiensis</i> was assessed on potted tomato and potato, respectively. A 24-h exposure to a 12.5 µg mL<sup>−1</sup> solution of <i>(E)</i>-cinnamaldehyde resulted in more than 68% mortality of <i>M. incognita</i> J2, while a poor mortality occurred at the same concentration of the whole EO. The mortality of <i>G. rostochiensis</i> J2 ranged 39 and 42%, respectively, since after a 4-h exposure to a 12.5 µg mL<sup>−1</sup> solution of both products. All the <i>X. index</i> specimens died after a 48- and 8-h exposure to a 100 µg mL<sup>−1</sup> solution of the EO and <i>(E)</i>-cinnamaldehyde, respectively. Egg hatch was reduced by more than 90% after exposing the <i>M incognita</i> egg masses or the <i>G. rostochiensis</i> cysts to 800 µg mL<sup>−1</sup> concentration of both EO and <i>(E)</i>-cinnamaldehyde for 24 and 96 h, respectively. The infestation of <i>M. incognita</i> and <i>G. rostochiensis</i> on tomato and potato, respectively, was significantly reduced by all soil treatments with both products, though <i>(E)-</i>cinnamaldehyde generally resulted more suppressive than the whole EO to both nematode species. According to these results, <i>C. cassia</i> EO and <i>(E)</i>-cinnamaldehyde could be suggested as a potential source of new environment-friendly nematicides.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142100954","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}
Alexander M. Stuart, Jens Jacob, Adedayo Michael Awoniyi, Federico Costa, Luwieke Bosma, Yonas Meheretu, Nyo Me Htwe, Stephanie Williamson, Michael Eddleston, Ambroise Dalecky, Sheila Willis
{"title":"Alternative domestic rodent pest management approaches to address the hazardous use of metal phosphides in low- and middle-income countries","authors":"Alexander M. Stuart, Jens Jacob, Adedayo Michael Awoniyi, Federico Costa, Luwieke Bosma, Yonas Meheretu, Nyo Me Htwe, Stephanie Williamson, Michael Eddleston, Ambroise Dalecky, Sheila Willis","doi":"10.1007/s10340-024-01825-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01825-7","url":null,"abstract":"<p>Metal phosphides, particularly aluminium phosphide (AlP) and zinc phosphide (Zn<sub>3</sub>P<sub>2</sub>), are widely used in low- and middle-income countries (LMICs) as rodenticides in urban and domestic environments due to their low cost and high toxicity to rodent pests. However, they are also highly toxic to humans with no antidote available and have been associated with numerous fatal cases of intentional and accidental poisoning. This paper reviews alternatives to metal phosphide use for rodent pest management in urban and domestic environments, highlights case studies of effective alternative approaches, and provides recommendations for research and policy. This review identifies numerous alternative methods available for managing rodent pests in domestic/urban settings that can replace metal phosphides. These include chemical methods, i.e. rodenticides, and non-chemical methods, e.g. rodent-proofing, sanitation and trapping. However<b>,</b> because the majority of chemical rodenticides qualify as highly hazardous pesticides due to acute human health toxicity, environmental toxicity, and/or bioaccumulation, simply selecting substitute chemical rodenticides to replace metal phosphides are likely to replace one set of hazards with others. Thus, careful risk and hazard assessments are needed when considering substituting with other chemicals. Overall, we need to move away from current levels of rodenticide reliance towards more integrated and ecologically based approaches.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142022049","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}
Xiaoxue Ji, Miao Fan, Di Wang, Siqi Zhang, Shouan Zhang, Yong Liu, Kang Qiao
{"title":"Volatile organic compounds (VOCs) of Bacillus velezensis TA-1 exhibit toxic effects against Meloidogyne incognita","authors":"Xiaoxue Ji, Miao Fan, Di Wang, Siqi Zhang, Shouan Zhang, Yong Liu, Kang Qiao","doi":"10.1007/s10340-024-01815-9","DOIUrl":"https://doi.org/10.1007/s10340-024-01815-9","url":null,"abstract":"<p>The use of <i>Bacillus</i> volatiles to manage root-knot nematodes (RKNs) is a topic that gained extensive attention because it is safe and environmentally benign. <i>Bacillus velezensis</i> TA-1, isolated from a continuously cropped soil, exhibited strong nematicidal activity against RKNs in vitro and in field conditions. However, it remains poorly understood whether TA-1 volatile organic compounds (VOCs) could be effective against <i>Meloidogyne incognita</i>. In this study, the results of chemotaxis activity test revealed that <i>B. velezensis</i> TA-1 exhibited strong repellent effects on second-stage juveniles (J2s) of <i>M. incognita</i>. In in vitro assays, TA-1 VOCs in a three-compartment Petri dish assay exhibited a mortality rate of 84.1% at 48 h and 92.8% at 72 h to <i>M. incognita</i> J2s. Further evidence revealed that TA-1 VOCs significantly inhibited the gene expression of <i>mpk-1</i>, <i>flp-18</i> and <i>ord-1</i> by 61.0%, 44.8% and 54.5%, respectively. Moreover, TA-1 VOCs increased the content of reactive oxygen species (ROS), resulting in severe oxidative stress and death of nematodes. Results from a double-layered greenhouse experiment indicated that the populations of J2s in the soil and in cucumber roots were notably reduced by TA-1 VOCs compared to the untreated control. Furthermore, eleven VOCs were identified from TA-1 by solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC/MS) analysis, of which benzaldehyde, 2-decanol, and 2-undecanone had strong contact nematicidal activities against <i>M. incognita</i> J2s. In addition, benzaldehyde and 2-dodecanone exhibited fumigation effects on <i>M. incognita</i> J2s. Overall, these results demonstrated that TA-1 VOCs exhibited direct contact nematicidal and fumigation activities against RKNs and could be considered as potential biocontrol agents for the control of RKNs.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141918833","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}
Xian-Zhong Wang, Si-Jing Wan, Bin-Er He, Shuang-Le Wang, Tian-Wen Wang, Liu-He Yu, Shi-Gui Wang, Hui-Zhong Wang, Bin Tang, Jiang-Jie Lu
{"title":"Physalis floridana suppresses the expression of trehalase gene HvTREs in Henosepilachna vigintioctopunctata (Coleoptera: Coccinellidae) for defense against herbivorous insects","authors":"Xian-Zhong Wang, Si-Jing Wan, Bin-Er He, Shuang-Le Wang, Tian-Wen Wang, Liu-He Yu, Shi-Gui Wang, Hui-Zhong Wang, Bin Tang, Jiang-Jie Lu","doi":"10.1007/s10340-024-01826-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01826-6","url":null,"abstract":"<p>Plants use various secondary chemicals in their chemical defense against herbivores. While botanical insecticides are crucial for reducing the reliance on chemical pesticides, the development of plant-derived insecticides remains limited. In this study, we fed <i>Henosepilachna vigintioctopunctata</i> with three different host plants (<i>Solanum nigrum</i>, <i>Solanum tuberosum</i>, and <i>Physalis floridana</i>) and observed that feeding on <i>P. floridana</i> led to changes in the body size and a significantly high mortality rate. Through transcriptome analysis, it was found that the trehalose metabolism pathway of <i>H. vigintioctopunctata</i> changed significantly under different host feeding conditions, especially since the expression level of the trehalase gene was extremely different. We subsequently identified eight transcripts of <i>HvTREs</i> and analyzed their evolution and structure. Among them, significant differences are observed in the relative expression levels of <i>HvTRE1-5</i> in <i>H. vigintioctopunctata</i> after the fourth instar and were affected by different plant diets. Compared with the natural host<i> S. nigrum</i>, the larvae that fed on <i>P. floridana</i> significantly reduced the contents of trehalose, glucose and glycogen and significantly affected the trehalase activity. Knockdown of <i>HvTRE1-5</i> by RNAi increased mortality at the <i>H. vigintioctopunctata</i> prepupation stage, suggesting that <i>HvTRE1-5</i> is important for <i>H. vigintioctopunctata</i> pupation. This study provides new insights into developing of green control methods for <i>H. vigintioctopunctata</i> and offers a valuable example for understanding the interaction between host plants and herbivorous insects.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141915207","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}
Verena Pichler, Kentaro Itokawa, Beniamino Caputo, Carlo Maria De Marco, Paola Serini, Romeo Bellini, Rodolfo Veronesi, Claudio De Liberato, Federico Romiti, Daniele Arnoldi, Annapaola Rizzoli, Riccardo Paolo Lia, Domenico Otranto, Antonios Michaelakis, Marina Bisia, Noboru Minakawa, Shinji Kasai, Alessandra della Torre
{"title":"Unbiased sequence analysis of vgsc gene reveals circulation of novel and known knock-down resistance mutations in Culex pipiens, challenging vector control measures","authors":"Verena Pichler, Kentaro Itokawa, Beniamino Caputo, Carlo Maria De Marco, Paola Serini, Romeo Bellini, Rodolfo Veronesi, Claudio De Liberato, Federico Romiti, Daniele Arnoldi, Annapaola Rizzoli, Riccardo Paolo Lia, Domenico Otranto, Antonios Michaelakis, Marina Bisia, Noboru Minakawa, Shinji Kasai, Alessandra della Torre","doi":"10.1007/s10340-024-01818-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01818-6","url":null,"abstract":"<p>Pyrethroids, targeting the voltage gated sodium channel (VGSC), are fundamental for the control of arboviral disease circulation. The spread of pyrethroid resistance among vector species represents thus a major public health concern. <i>Culex pipiens</i> is one of the most abundant European mosquito species and main vector of West Nile virus, leading cause of arboviral encephalitis worldwide. Despite this, monitoring of its resistance status and the understanding of underlying mechanisms are widely neglected. Herein, we performed an oligo-hybridization capture approach on 82 <i>Cx. pipiens</i> specimens from Italy and Greece to investigate the whole coding sequence of the <i>vgsc</i> gene for the presence of known and potential knock-down resistance (<i>kdr</i>) mutations associated with target-site resistance to pyrethroids in insects. Among the 26 non-synonymous substitutions revealed by the analysis, the super-<i>kdr</i> haplotype—i.e. the association of <i>kdr</i>-alleles 918T and 1014F, known for conferring a strongly enhanced resistance phenotype in <i>Musca domestica</i> – was revealed for the first time in mosquitoes. Three more potential <i>kdr</i> alleles were detected for the first time in <i>Cx. pipiens</i> and multiple <i>kdr</i> variants were observed for locus 1014, with allele 1014F, reaching frequencies > 80%. Overall, results depict a worrisome situation that could affect the ability to control West Nile virus outbreaks in southern Europe. To avoid this, resistance monitoring needs to be intensified and an enhancement of the diagnostic tool box for the easy detection of different <i>kdr</i>-variants (including in particular the super-<i>kdr</i> haplotype) and for subsequent functional studies on the resistance phenotype of detected variants, is required.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909295","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}
{"title":"Potential of blue light-emitting diodes (LEDs) to disturb whiteflies on the crop: a new push–pull strategy?","authors":"Maria Athanasiadou, Robin Seger, Rainer Meyhöfer","doi":"10.1007/s10340-024-01822-w","DOIUrl":"https://doi.org/10.1007/s10340-024-01822-w","url":null,"abstract":"<p>Mass trapping can be a crucial component of a push–pull strategy, which involves deterrence of pests from a crop (push), while luring them toward an attractive source e.g., a trap (pull). In this study, we explored the effect of blue and blue + UV LEDs on the dispersal of greenhouse whiteflies settled on tomato plants (“push” factor) and the contribution of a yellow sticky trap (YST) and a green LED-enhanced YST (green LED trap) on their recapture after take-off (“pull” factor), in controlled conditions. In following scaling-up experiments in the greenhouse, we tested the effect of different blue spotlight arrangements and intensities on whitefly dispersal, in the presence of a green LED trap. Number of dispersed and trapped whiteflies was counted and the results revealed that blue and blue + UV LEDs increased the dispersed whiteflies by twofold compared to the control without deterrent LEDs and 87–90% of them were captured on a green LED trap. In the greenhouse, high-intensity blue spotlights (186 μmol/m<sup>2</sup>/s) deterred nearly 50% of whiteflies from the plants and more than half of them were recaptured, regardless the different arrangement of the blue spotlights. The green LED trap was at least twice as attractive as the YST, and in the greenhouse, it captured nearly 12 times more whiteflies in the presence of high-intensity deterrent blue spotlights, compared to the control. These findings provide significant implications for improving targeted whitefly control techniques and can lead to the development of new push–pull strategies.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909298","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}