Journal of Pest Science最新文献

{"title":"Characterization and levels of resistance in Coffea arabica × Coffea racemosa hybrids to Leucoptera coffeella","authors":"Daniel C. M. Costa, Bruno H. S. Souza, Carlos H. S. Carvalho, Oliveiro Guerreiro Filho","doi":"10.1007/s10340-024-01844-4","DOIUrl":"https://doi.org/10.1007/s10340-024-01844-4","url":null,"abstract":"<p>Coffee leaf miner (CLM) <i>Leucoptera coffeella</i> stands out as a primary insect pest of arabica coffee plants in some regions of Brazil. Coffee breeding for CLM-resistance has used the species <i>Coffea racemosa</i> as gene donor for <i>C. arabica</i>, resulting in the development of the resistant commercial hybrid ‘Siriema AS1’. However, no previous study has characterized the resistance type, and whether there is variation in the levels expressed in progenies of ‘Siriema’ to CLM. This study aimed to characterize the type, by antixenosis or antibiosis, and the levels of resistance in segregating progenies of ‘Siriema’ plants to CLM. Experiments were conducted under laboratory conditions with artificial infestation of CLM adults in oviposition cages, where dual-choice preference assays compared each tested ‘Siriema’ progeny with the susceptible commercial cv. Arara (<i>C. arabica</i>). A follow-up no-choice assay evaluated five selected ‘Siriema’ progenies on the development of CLM compared to cv. Arara. As main results, ‘Siriema’ progenies were equally susceptible to CLM oviposition, and were overall stimulant relative to cv. Arara. However, there was low CLM larval survival and injury intensity on the selected ‘Siriema’ genotypes, indicating moderate levels of antibiosis-resistance, while cv. Arara and one ‘Siriema’ progeny were moderately susceptible. These findings further our understanding on the type and levels of resistance in ‘Siriema’ genotypes, aiding in the development of resistant coffee hybrids and deployment of management strategies to CLM.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"95 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596571","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":"Study on the feasibility of buckwheat as a trap plant for flower thrips (Frankliniella intonsa) in sunflower field","authors":"Hui Qu, Jing Chang, Ze-Run Chuai, Wen-Bing Zhang, Jian Zhang, Jun Zhao, Hai-Ping Li","doi":"10.1007/s10340-024-01847-1","DOIUrl":"https://doi.org/10.1007/s10340-024-01847-1","url":null,"abstract":"<p><i>Frankliniella intonsa</i> (Thysanoptera: Thripidae) is a significant invasive pest that can damage numerous plants and crops and spread the tomato spotted wilt virus. During the sunflower flowering period in the primary sunflower production area in China, <i>F. intonsa</i>-infested sunflower heads produce kernels with marked visual damage, including peel scratches, which reduce seed quality and profitability. In this study, the behavioral responses of <i>F. intonsa</i> to buckwheat and sunflowers were measured in a Y-tube. Meanwhile, gas chromatography-mass spectrometry was performed to determine the volatile components of inflorescences of both sunflower and buckwheat and the behavioral effects of these components were evaluated on <i>F. intonsa</i> in a Y-tube. The results revealed that sunflower leaves significantly repelled adults and nymphs of <i>F. intonsa</i> both in olfactometer bioassays. However, <i>F. intonsa</i> was significantly attracted by the volatiles from the leaves and flowers of buckwheat. Interestingly, <i>F. intonsa</i> adults preferred sunflower flowers over buckwheat flowers. Among the four kinds of sunflower flower volatiles selected, <i>F. intonsa</i> was attracted by two kinds of volatiles (<i>γ</i>-terpinene and (R)-( +)-limonene), while one volatile (<i>β</i>-pinene) had the effect of repelling <i>F. intonsa</i>, while among the four selected buckwheat flower volatiles, <i>F. intonsa</i> were attracted by three kinds of volatiles (<i>α</i>-caryophyllene, verbenone, octane). Finally, the field-trapping effect of buckwheat on <i>F. intonsa</i> was verified by a sunflower-buckwheat intercropping experiment. The results of this study provide a theoretical basis for the feasibility of intercropping with buckwheat and sunflower to control <i>F. intonsa</i>. Thus, buckwheat can be used as a trapping plant in fields to prevent <i>F. intonsa</i> invasion.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"80 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596620","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":"Knockdown resistance in Stomoxys calcitrans stable fly populations on German dairy farms: kdr alleles explain susceptibility of individual flies to deltamethrin","authors":"Ricarda Daher, Jürgen Krücken, Burkhard Bauer, Virginia Maria Góes da Silva, Sophia Reissert, Wiebke Weiher, Ard M. Nijhof, Peter-Henning Clausen, Stephan Steuber","doi":"10.1007/s10340-024-01838-2","DOIUrl":"https://doi.org/10.1007/s10340-024-01838-2","url":null,"abstract":"<p>The stable fly, <i>Stomoxys calcitrans,</i> is a globally important pest causing stress, economic losses and transmission of pathogens in livestock. Control on commercial farms relies predominantly on the use of insecticides, with pyrethroids being the most frequently used class of insecticides in industrialised countries. Here, laboratory isolates were obtained from four dairy farms in Brandenburg (Germany) and tested for phenotypic resistance to deltamethrin in comparison to a susceptible reference isolate using topical application. Individual flies were subsequently genotyped using allele-specific real-time PCRs. Phenotypic resistance was observed in all four field isolates with resistance ratios between 46 and 119 compared to the susceptible laboratory strain. At position 1014 of the voltage-sensitive sodium channel, allele-specific PCRs detected the <i>wild-type</i>, <i>kdr-his</i> and <i>kdr</i> genotypes encoding leucine, histidine and phenylalanine, respectively. In the susceptible laboratory isolate, only the <i>wild-type</i> was identified. On the farms with very high LD₅₀ values, the <i>kdr</i> variant was most prevalent and logistic regression analysis revealed that the <i>kdr</i> variant increased the odds to survive exposure to deltamethrin more than the <i>kdr-his</i> genotype. Flies carrying two resistance alleles were less susceptible than flies that also carried one <i>wild-type</i> allele. In three out of four field isolates, the allele frequencies were significantly different from the expectations of the Hardy–Weinberg equilibrium suggesting ongoing selection. The data show that the phenotype can be largely explained by the <i>kdr</i> genotype and represent high frequencies of the L1014F <i>kdr</i> and L1014H <i>kdr-his</i> variants conferring high levels of resistance in northern Germany.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"18 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594711","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":"Identifying ecological factors mediating the spread of three invasive mosquito species: citizen science informed prediction","authors":"László Zsolt Garamszegi, Zoltán Soltész, Tamara Szentiványi, Kornélia Kurucz, Gergely Nagy, Ákos Bede-Fazekas","doi":"10.1007/s10340-024-01841-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01841-7","url":null,"abstract":"<p>Due to their potential role in pathogen transmission, invasive mosquitoes pose considerable threats to human and animal health. Several studies have identified the most important ecological drivers mediating the establishment and spread of key mosquito species (e.g., <i>Aedes aegypti</i>, and <i>Ae. albopictus</i>), and made predictions for future distribution. We evaluated the effect of an exhaustive list of environmental predictors on the distribution of three invasive species in Hungary (<i>Ae. albopictus</i>, <i>Ae. japonicus,</i> and <i>Ae. koreicus)</i> by using the same standards for data collection based on citizen science observations. Current distribution maps of these species were generated from a 5-year survey, then were compared with various predictor maps reflecting climate, habitat type, food supply, traffic, and interspecific competition by using a boosted regression trees approach that resulted in a subset of variables with the strongest impact. The best predictor sets were used to predict the probability of occurrence of the focal species for the whole country, and these predictions based on citizen science were evaluated against the results of an independent recent field surveillance. We uncovered species-specific patterns and found that different predictor sets were selected for the three different species, and only predictions for <i>Ae. albopictus</i> could be validated with direct trapping data. Therefore, citizen science informed distribution maps can be used to identify ecological predictors that determine the spread of invasive mosquitoes, and to estimate risk based on the predicted distribution in the case of <i>Ae. albopictus</i>.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"111 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556047","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":"Climate-related risk to maize crops in China from Fall Armyworm, Spodoptera frugiperda","authors":"Steffi Urhausen, Catherine D. Bradshaw, Jemma Davie, Dominic Eyre, Deborah Hemming, Hongmei Li, Bryony Taylor, Feng Zhang","doi":"10.1007/s10340-024-01817-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01817-7","url":null,"abstract":"<p>The Fall Armyworm, <i>Spodoptera frugiperda</i>, invaded China late in 2018 and was responsible for substantial crop losses, especially to maize. This work focuses on the suitability of climate across China for Fall Armyworm survival and spread. It uses climate metrics derived with guidance from experts to enable assessment of the risks posed by Fall Armyworm on maize production in different regions of China. The locations and time of year when temperature conditions are within a viable range for Fall Armyworm survival (minimum temperature higher than 9.7<span>(^circ)</span>C and maximum temperature lower than 39.2<span>(^circ)</span>C) are used to estimate the spatial distribution of winter breeding and overwintering zones, which helps understand the regions and timing of Fall Armyworm migration risk into northern maize production regions. In addition, meridional wind conditions across the Yangtze River basin area are assessed, and a metric of migration potential from the winter breeding and overwintering regions in the south towards northern regions with maize production is established. Results show that temperature during the winter months currently limits Fall Armyworm winter breeding populations to the very southern regions of China (and bordering countries to the south). However, due to the consistent timing and direction of the East Asian Summer Monsoon winds, the Fall Armyworm could easily be directed northwards to the Yangtze River basin during summer months with a peak in July. For this reason, pest management actions against the Fall Armyworm on summer maize should be taken.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"25 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519574","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":"Dual function of the Tuta absoluta 3-phosphoinositide-dependent protein kinase-1 in pupa ecdysis and adult reproduction","authors":"Shu-Yan Yan, Jia-Hui Song, Wen-Jia Yang, Wan-xue Liu, Gui-Fen Zhang, Fang-Hao Wan, Nicolas Desneux, Yi-Bo Zhang","doi":"10.1007/s10340-024-01839-1","DOIUrl":"https://doi.org/10.1007/s10340-024-01839-1","url":null,"abstract":"<p>Phosphoinositide-dependent kinase PDK, a key component of the insulin signaling pathway, plays an important role in the regulation of insect growth and development. However, the functional significance of the <i>PDK</i> gene in <i>Tuta absoluta</i>, a destructive invasive tomato leaf miner, remains unknown. In this study, we identified and characterized a <i>PDK</i> gene (designated <i>TaPDK</i>) and analyzed its physiological roles in molting and reproduction of <i>T. absoluta</i>. Our results showed that the <i>TaPDK</i> expression levels were elevated in the 5- and 6-day-old pupae before ecdysis and declined immediately after eclosion. <i>TaPDK</i> was predominantly expressed in the head, midgut and abdomen. When the <i>TaPDK</i> was knockdown, the larval-pupal molting and female reproduction were severely affected. Injecting dsRNA of <i>TaPDK</i> into 2-day-old female pupae resulted in severe phenotypic changes (cuticular shrinkage) in 31.29% of pupae, ultimately leading to death. Knockdown of <i>TaPDK</i> significantly reduced the 20E titer and chitin content and downregulated the expression levels of genes involved in the 20E pathway and chitin metabolism. Further investigation revealed that the suppression of <i>TaPDK</i> impaired ovarian development, resulting in significantly reduced fecundity and hatchability. In addition, the JH titer and vitellogenin content of <i>TaPDK</i>-deficient females were reduced, and the expression of <i>Vg</i>, <i>VgR</i>, and JH signaling pathway genes were significantly decreased. Collectively, our study provides a deep insight into the PDK-mediated regulation of pupal ecdysis and female reproduction in <i>T. absoluta</i>.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"20 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519610","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":"Preimaginal treatment of Trichogramma evanescens and T. pintoi with two novel insecticides, afidopyropen and broflanilide: the lethal, sublethal and transgenerational effects","authors":"Adil Tonğa, Mustafa Erkek","doi":"10.1007/s10340-024-01836-4","DOIUrl":"https://doi.org/10.1007/s10340-024-01836-4","url":null,"abstract":"<p>The egg parasitoids, <i>Trichogramma evanescens</i> Westwood and <i>T. pinto</i> Voegelé (Hymenoptera: Trichogrammatidae), play central roles in the management of lepidopteran crop pests. However, their effectiveness highly depends on the employment of compatible pesticides, with a particular focus on novel insecticides that are promising in pest control. This study investigated the lethal, sublethal and transgenerational effects of two novel insecticides, afidopyropen and broflanilide, on <i>T. evanescens</i> and <i>T. pintoi</i> in terms of biological and behavioral traits. The eggs of the factitious host, <i>Ephestia kuehniella</i> Zeller (Lepidoptera: Pyralidae), with parasitoids at the preimaginal developmental stages (egg-larval, prepupal and pupal) were immersed in insecticide solutions. The emergence rates of both parasitoids were negatively affected by preimaginal treatments with different concentrations of afidopyropen and broflanilide. In transgenerational experiments, broflanilide treatments significantly reduced the parasitism performance of the treated generation (F0), emergence rate of F1 and F2, sex ratio of F1 <i>T. evanescens</i> and the emergence rate and sex ratio of F1 <i>T. pintoi</i>. Afidopyropen treatments reduced the emergence rate of F3 <i>T. evanescens</i> adults. The longevity of the F0 females and males of both parasitoids and that of the F1 females of <i>T. evanescens</i> were significantly reduced by broflanilide treatments. Broflanilide also decreased the walking speed of both species while afidopyropen enhanced the resting frequency of <i>T. evanescens</i>. This comprehensive study provides insights into the toxicological assessment of afidopyropen and broflanilide on <i>Trichogramma</i> species, employing parameters corresponding to their population and behavioral dynamics. Finally, this study concludes that the integration of afidopyropen and broflanilide into integrated pest management (IPM) strategies necessitates careful consideration, particularly regarding potential non-target effects on <i>Trichogramma</i> species.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"26 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415771","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":"Sublethal effects of lambda-cyhalothrin on the biological characteristics, detoxification enzymes, and genes of the papaya mealybug, Paracoccus marginatus","authors":"Jian-Yu Li, Yan-Ting Chen, Yan Chen, Jian-Wei Zhao, Jian-Wei Fu, Meng-Zhu Shi","doi":"10.1007/s10340-024-01837-3","DOIUrl":"https://doi.org/10.1007/s10340-024-01837-3","url":null,"abstract":"<p>The papaya mealybug, <i>Paracoccus marginatus</i>, is an invasive pest that causes significant damage to various tropical fruits and ornamentals worldwide. Lambda-cyhalothrin, an effective insecticide in integrated pest management (IPM) strategies, can control <i>P. marginatus</i>. This study evaluated the sublethal effect of lambda-cyhalothrin on the life table parameters and the detoxification enzymes activities of <i>P. marginatus</i>. Furthermore, transcriptome sequencing analysis revealed the potential mechanisms of the detoxification-related genes associated with enzymes activities. The study reported that lambda-cyhalothrin showed high activity against <i>P. marginatus</i>, with LC₃₀ values of 8.98 mg/L. Two-sex life table results showed that the development duration of the second instar nymphs, preadults, and adult female longevity was significantly prolonged, and the fecundity was stimulated in the F₁-CY of <i>P. marginatus</i> when the parental generation was exposed to LC₃₀ lambda-cyhalothrin. Moreover, lambda-cyhalothrin treatment significantly increased the activities of Cytochrome P450 monooxygenases (P450) and glutathione-S-transferase (GST) enzymes. Additionally, significant expression levels of P450, GST, carboxylesterase, and esterase genes were observed in <i>P. marginatus</i> subjected to the sublethal lambda-cyhalothrin exposure. Our findings demonstrate that sublethal concentrations of lambda-cyhalothrin influenced the development and fecundity of <i>P. marginatus</i>, and changes in enzymes activities and differential expression of detoxifying genes might be involved in the response and detoxification metabolism of lambda-cyhalothrin in <i>P. marginatus.</i> These results could contribute to a comprehensive risk assessment and provide guidance for the scientific use of lambda-cyhalothrin in IPM strategies.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"53 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385487","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":"Insecticidal activity, toxicity and biochemical alterations of Drimys brasiliensis essential oil against Spodoptera frugiperda","authors":"Greissi Tente Giraldi, Wanderlei do Amaral, Rubens Candido Zimmermann, Edson José Mazarotto, Ana Marta Schafaschek, Alisson Esser Gerber, Beatriz Helena L. N. Sales Maia, Elaine Fernanda dos Santos, Mario Antônio Navarro da Silva, Luis Amilton Foester","doi":"10.1007/s10340-024-01827-5","DOIUrl":"https://doi.org/10.1007/s10340-024-01827-5","url":null,"abstract":"<p><i>Spodoptera frugiperda</i> is a major pest in corn crops, causing significant productivity losses and exhibiting high resistance to synthetic insecticides. Essential oils (EOs) are natural substances known for their insecticidal activity against various agricultural pests. This study describes the chemical composition and bioactivity of <i>Drimys brasiliensis</i> EO against <i>S. frugiperda</i> larvae. The EO was extracted using the steam distillation method in a vat, and its chemical composition was determined using gas chromatography coupled with mass spectrometry (GC–MS). The insecticidal activity of this EO was assessed by the contact method to estimate the lethal concentration (LC₅₀ and LC₉₀) and to evaluate the effects on biochemical markers, including glutathione S-transferase (GST), esterase-α (EST-α), esterase-β (EST-β), superoxide dismutase (SOD), acetylcholinesterase (AChE) and lipid peroxidation (LPO), in 3rd instar larvae of <i>S. frugiperda</i>. Twenty-nine compounds were identified by GC–MS, accounting for 81.32% of the total chemical composition <i>D. brasiliensis</i> EO resulted in 100% mortality of <i>S. frugiperda</i> larvae at a concentration of 2.5%, with LC₅₀ and LC₉₀ values of 0.90 and 1.40%, respectively. Both lethal concentrations increased AChE and LPO activity, while only LC₉₀ affected the EST-α and EST-β enzymes. <i>Drimys brasilien</i>sis EO exhibits insecticidal activity against <i>S. frugiperda</i> with neurotoxic effects, as well as cellular damage, demonstrating its potential as a control method in managing this pest in conventional and organic production methods.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"22 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325380","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":"Modelling time-temperature-dependent mortality of pest flies in cold storage to support the management of trade-related biosecurity risks","authors":"Himali U. Ratnayake, Ross Darnell, Brent Henderson, Rieks D. van Klinken","doi":"10.1007/s10340-024-01835-5","DOIUrl":"https://doi.org/10.1007/s10340-024-01835-5","url":null,"abstract":"<p>Cold treatment with rigorous regulatory oversight is often mandated to manage horticultural trade-related biosecurity threats, such as invasive, cold-sensitive fruit flies (Diptera: Tephritidae). Cold treatment schedules, developed through rigorous laboratory experiments, require a set temperature and duration to ensure at least a probit 8.7 (99.99%) mortality rate, regardless of infestation likelihood. This threshold is costly to demonstrate for each pest and commodity combination and the resultant treatment may be harmful to fruit quality. Moreover, these stringent schedules do not account for cold-induced mortality already occurring in commercial supply chains. We developed a predictive temperature-dependent mortality function using 28 published cold treatment studies of pest fly species to support more flexible and proportionate use of cold treatment. The daily mortality rate was unaffected by the duration of cold exposure (0–20 days). The mortality rate varied primarily by pest species (10 species) and developmental stage (eggs and larval stages), and to a lesser extent by temperature (0–7 °C) and host (13 fruit types). Our model mostly predicted fewer days to meet probit 9.0 mortality compared to empirical results from large-scale studies, suggesting these studies can be overly conservative. By leveraging previous empirical studies, our model enables estimation of temperature-dependent daily mortality for unstudied pest developmental stage host–temperature combinations, which can then be empirically validated through targeted studies. It is hoped these results will shift cold treatment usage from highly regulated, fixed temperature treatments with a target mortality rate requirement to a more flexible approach that accounts for existing commercial supply chain practices and infestation likelihood in produce.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"63 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142235081","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}