Ayla Faraji, Kelsey A Fairbanks, Ary Faraji, Christopher S Bibbs
{"title":"Comparative resilience and precision of digitized optical counting using ImageJ during routine mosquito (Diptera: Culicidae) sample processing.","authors":"Ayla Faraji, Kelsey A Fairbanks, Ary Faraji, Christopher S Bibbs","doi":"10.1093/jisesa/ieaf026","DOIUrl":"10.1093/jisesa/ieaf026","url":null,"abstract":"<p><p>Surveillance is integral for the targeted and effective function of integrated vector management. However, the scale of surveillance efforts can be prohibitive on manpower, given the large number of traps set, collected, processed, and enumerated. For many public health agencies, the sheer effort of weekly trapping, combined with the processing of numerous traps, is a major capacity challenge. To reduce employee fatigue and increase throughput, estimation methods are used in a diagnostic capacity to determine threshold numbers of mosquitoes (Diptera: Culicidae) for operational decision-making. Historically, volume and mass measures correlated to a known number of mosquitoes are the oldest and most widely used within mosquito control programs. Image processing methods using digital counting software, such as ImageJ, have not been tested rigorously in the context of high throughput usage experienced in mosquito operations. We stress-tested volume, mass, and image processing methods using sample calibrations from early in the year and applied them throughout a mosquito active season. We additionally tested resilience with samples that had been frozen, desiccated, old, or from an excessively large trap collection. Furthermore, we compared magnitudes of error after intentionally deviating from best practices. In all cases, mass and volume encountered significant errors. In contrast, the digitized-optical counting method was resilient to going long periods of use without recalibrating, handling different species compositions, and processing aged or damaged samples. If a program has limited logistical power, the aforementioned image-processing method confers the best balance of accuracy and expediency for time-sensitive workloads and efficient operational decision making.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908421/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Krüppel homolog 1 mediates juvenile hormone action to suppress photoperiodic reproductive diapause-related phenotypes in the female Chrysoperla nipponensis (Neuroptera: Chrysopidae).","authors":"Haiyi Huang, Dandan Li, Minghui Xu, Shaofeng Zhong, Shaoye Liu, Xingke Gao, Yongyu Xu, Zhenzhen Chen","doi":"10.1093/jisesa/ieaf027","DOIUrl":"10.1093/jisesa/ieaf027","url":null,"abstract":"<p><p>Juvenile hormone (JH) has been revealed to be a critical factor in regulating photoperiod reproductive diapause in various insect species, however, little information is known about the detailed mechanisms. In this study, we investigated the roles of JH signaling in photoperiod reproductive diapause in a green lacewing, Chrysoperla nipponensis (Okamoto), which is a potentially important biological control predator. Our results showed that the short-day condition induces a diapause state including JH synthesis suppression, ovarian development arrest, and triglyceride accumulation. The interference of JH response genes, Krüppel homolog 1 (Kr-h1), in reproductive females exhibited a diapause-related phenotype such as ovarian development arrest and larger triglyceride storage. Exogenous JH III suppresses diapause to promote ovarian development and inhibit triglyceride synthesis. However, exogenous JH III fails to rescue the Kr-h1-silenced phenotype. Accordingly, our results demonstrate the critical role of Kr-h1 in regulating JH signaling to promote reproduction.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11926538/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sandra W Woolfolk, Gerald A Matthews, Quentin D Read
{"title":"Comparison of infestation rates of fall armyworm (Lepidoptera: Noctuidae) neonates for maize resistance screening.","authors":"Sandra W Woolfolk, Gerald A Matthews, Quentin D Read","doi":"10.1093/jisesa/ieaf025","DOIUrl":"10.1093/jisesa/ieaf025","url":null,"abstract":"<p><p>An economically important global maize pest, fall armyworm (Spodoptera frugiperda (J.E. Smith)), feed on all above-ground portions of maize plants, primarily the whorl tissues. One of our research unit missions is to identify and develop maize germplasm with resistance to fall armyworm. One method to measure resistance in maize to fall armyworm is visual rating of leaf-feeding damage after infestation with neonates into the whorl. The objective of this study was to compare leaf-feeding damage ratings after infestation with different rates of fall armyworm neonates. The ultimate goal was to select the smallest infestation rate which could give the same damage effect on maize leaves as the larger infestation rates. Four susceptible and 7 resistant maize germplasm lines were planted in replicated experiments with a split plot arrangement in the field in the summer of 2023 and 2024. Plants were infested with fall armyworm at 10-, 20-, 30-, 40-, and 50-neonate infestation rates (treatment). Leaf-feeding damage was scored 14 d after infestation. In general, 10-neonates infestation rate exhibited less damage in comparison to the higher infestation rates indicating much less pressure from fall armyworm to exhibit resistance in maize regardless of the lines. Overall results showed that 20-, 30-, and 40-neonate infestation rates did not differ in the leaf-feeding damage scores among each other. These rates were able to clearly distinguish the damage between susceptible and resistant lines; hence, 20-neonate rate could be used as the standard infestation rate for future infestation in the maize resistance research program.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11973898/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tonya D Bittner, Nathan P Havill, Nicholas J Dietschler, Zephyr Zembrzuski, Mark C Whitmore
{"title":"Eastern and western lineages of Leucotaraxis argenticollis (Diptera: Chamaemyiidae), a biological control agent for Adelges tsugae (Hemiptera: Adelgidae), are capable of hybridization in the laboratory.","authors":"Tonya D Bittner, Nathan P Havill, Nicholas J Dietschler, Zephyr Zembrzuski, Mark C Whitmore","doi":"10.1093/jisesa/ieaf031","DOIUrl":"10.1093/jisesa/ieaf031","url":null,"abstract":"<p><p>Hybridization between eastern and western lineages of the biological control agent, Leucotaraxis argenticollis (Zetterstedt) (Diptera: Chamaemyiidae), was demonstrated in the laboratory. The western lineage is abundant on hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae) in western North America while a genetically distinct eastern lineage feeds mostly on pine adelgids (Hemiptera: Adelgidae: Pineus spp.). Western flies have been released in eastern North America but establishment has not been observed. When reared on A. tsugae in the laboratory, many eastern L. argenticollis larvae did not survive, and of those that did reach pupariation, 21% survived to the adult stage. To assess hybridization, eastern females were placed with western males for no-choice mating. They produced hybrid offspring with 8% survival to the adult stage when reared on A. tsugae. Further investigation of hybrid fitness, assortative mating, and the prey-seeking strategies of Leucotaraxis would aid in predicting the outcome of potential hybridization in the field.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11973899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Instar determination, development, and sexual dimorphism for Gynaephora menyuanensis (Lepidoptera: Lymantriinae) and ultrastructure of adult antennae.","authors":"Hainan Shao, Chen Yuan, Yunxiang Liu, Xin Xin","doi":"10.1093/jisesa/ieaf006","DOIUrl":"10.1093/jisesa/ieaf006","url":null,"abstract":"<p><p>Gynaephora menyuanensis Yan & Zhou is one of the most devastating pests that harm the ecosystem of alpine meadows and hinder the advancement of animal husbandry. However, the current knowledge of the morphology of the different developmental stages within G. menyuanensis reveals an information deficit that needs to be addressed. This study is the first to report the life history, sexual dimorphism, and morphology of eggs, mature larvae, pupae, and adult antennal sensilla types of G. menyuanensis. This study used a K-means clustering method, based on the head width, body length, body width, and the number of crochets of larvae at each instar, to differentiate instars of G. menyuanensis; the description of the morphology of larvae, pupae, and adult antennae employed light microscopy and scanning electron microscopy photographs. The results revealed that the instar grouping was reliable and verified by the Brooks-Dyar combined with Crosby rules, revealing that the larval stage of G. menyuanensis comprises 7 instars. This species produces one generation per year in the alpine meadow, with its life cycle lasting approximately 300 d in total. The pupae and adult antennae significantly differed between the sexes, indicating sexual dimorphism in the 2 genders. Nine types and 14 subtypes of antennal sensilla were observed in male antennae (bipectinate), while only 3 types and 3 subtypes were found in female adult antennae (club-like). Our findings have implications for better understanding the life history, adaptation strategies under extreme environmental conditions on the Qinghai-Tibet Plateau and developing scientific and effective pest control methods.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908424/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ann L Carr, Steven S Denning, Anastasia C Figurskey, Kim Y Hung, Michael H Reiskind, David Wes Watson
{"title":"Response of adult Cochliomyia macellaria, Musca domestica, and Sarcophaga bullata (Diptera: Calliphoridae, Muscidae, Sarcophagidae) to odors produced by commercial fly baits in a two-choice olfactometer bioassay.","authors":"Ann L Carr, Steven S Denning, Anastasia C Figurskey, Kim Y Hung, Michael H Reiskind, David Wes Watson","doi":"10.1093/jisesa/ieaf020","DOIUrl":"10.1093/jisesa/ieaf020","url":null,"abstract":"<p><p>We developed a two-choice spatial olfactometer to evaluate the response of adult secondary screwworm (Cochliomyia macellaria), house fly (Musca domestica), and flesh fly (Sarcophaga bullata) to two commercially available fly-trap attractants, Captivator and FliesBeGone in three-dimensional space. Liquid fly baits were prepared according to the manufacturer's recommendations and aged to discern the relative attraction of fresh and older baits. Each 0.07 m3 (2.5 ft3) arena was fitted with two fresh air intake ports, collection chambers containing the attractant or a blank control, and air exhaust ports. We released adult flies into an arena with sufficient space to allow free flight and response to the test attractants. Each comparison was replicated eight times with fresh flies. Flies were more responsive to commercial bait than the water control. Air flowrates, as measured through the intake ports, was determined to be a limiting factor for C. macellaria and S. bullata with significant responses rates observed to flowrates ≤0.14 m3/min (5 ft3/min) and ≤0.25 m3/min (9 ft3/min), respectively. In contrast, M. domestica appeared to respond similarly to all flowrates tested (≤0.31 m3 (11 ft3/min). In direct comparisons with a water control, M. domestica was attracted to baits regardless of bait age. In similar experiments, C. macellaria was significantly responsive to FliesBeGone aged 2 and 3 d but not Captivator regardless of age. Lastly, S. bullata was most responsive to FliesBeGone aged 3 and 4 d, and Captivator aged 4 d. Female flies responded to fly baits more frequently than males.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jackson R Strand, Oscar G Perez Moya, Robert K D Peterson, Tracy M Sterling, David K Weaver
{"title":"Sensory and behavioral responses of braconid parasitoids to changes in volatile emissions induced by wheat stem sawfly (Hymenoptera: Cephidae) larval feeding in winter wheat and smooth brome.","authors":"Jackson R Strand, Oscar G Perez Moya, Robert K D Peterson, Tracy M Sterling, David K Weaver","doi":"10.1093/jisesa/ieaf016","DOIUrl":"10.1093/jisesa/ieaf016","url":null,"abstract":"<p><p>The wheat stem sawfly, Cephus cinctus Norton, is a major pest of cultivated wheat (Triticum aestivum L.) and other cereals in North America. The native congeneric parasitoids Bracon cephi (Gahan) and B. lissogaster Muesebeck are important biocontrol agents and play a crucial role in managing wheat stem sawfly outbreaks and damage. Smooth brome grass (Bromus inermis Leyss) has been found to be an effective wheat stem sawfly sink and parasitoid source when grown in areas neighboring wheat fields in Montana. To better understand the ecology of the system, we investigated both the wheat stem sawfly-induced volatile organic compounds produced by smooth brome and winter wheat, and the electrophysiological and behavioral response of B. cephi and B. lissogaster to the collected volatiles via coupled electroantennography and gas chromatography-flame ionization detection. Volatile concentration analysis indicated significantly increased production of (Z)-3-hexenyl acetate, 6-methyl-5-hepten-2-one, and (E)-2-hexenal in wheat stem sawfly-infested smooth brome, and elevated production of 6-methyl-5-hepten-2-one in infested smooth brome and winter wheat when compared to their uninfested counterparts. Both B. cephi and B. lissogaster exhibited significant electrophysiological and behavioral response to (Z)-3-hexenyl acetate, 6-methyl-5-hepten-2-one, and hexahydrofarnesyl acetone. Our results provide important evidence supporting habitat management recommendations that will enhance the effectiveness of biological control, contributing to more sustainable agricultural practices and the preservation of vital ecological functions.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908414/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reliable mass production of Ganaspis kimorum (Hymenoptera: Figitidae), a larval parasitoid of Drosophila suzukii (Diptera: Drosophilidae).","authors":"Juan Huang, Rufus Isaacs, Julianna K Wilson","doi":"10.1093/jisesa/ieaf024","DOIUrl":"10.1093/jisesa/ieaf024","url":null,"abstract":"<p><p>Spotted wing drosophila, Drosophila suzukii (Matsumura), native to Asia, has become a significant threat to soft fruit crops globally. To develop a classical biological control program for this pest, the obligate parasitoid Ganaspis kimorum (Buffington) was approved in the United States for field release in 2021 as a biological control agent. However, challenges in mass production and maintenance of parasitoid colonies have been common. Here, we share improved methods and offer insights into mitigating issues that limit parasitoid production. Additionally, we present a modified rearing protocol using 2-l plastic containers to produce an average of 307 G. kimorum per container. This information is crucial for implementing successful classical biological control programs against spotted wing drosophila with this parasitoid.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908422/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alison R Gerken, Rose L Scott, Sonika Khosla, Alexus Markley, Codi Mueller, Deanna S Scheff
{"title":"Impacts of food, temperature, and humidity on recovery in Tribolium castaneum (Coleoptera: Tenebrionidae) after exposure to a contact pyrethroid insecticide.","authors":"Alison R Gerken, Rose L Scott, Sonika Khosla, Alexus Markley, Codi Mueller, Deanna S Scheff","doi":"10.1093/jisesa/ieaf021","DOIUrl":"10.1093/jisesa/ieaf021","url":null,"abstract":"<p><p>Insects that infest postharvest commodities cause significant damage or destruction, costing billions of dollars in lost products yearly. Insecticide treatments applied as contact insecticides are effective in managing insect populations. However, recovery of the insects after exposure to these insecticides is increased if food is present, reducing the efficacy of surface treatments and leading to continued infestations. In addition, variation in temperature and humidity could play a significant role in recovery. Here, we assess the role of food, temperature, and humidity on the recovery of Tribolium castaneum Herbst, red flour beetle, after exposure to a contact insecticide. We found food is an important factor in recovery under different temperature and humidity conditions. While recovery was higher at warmer temperatures and higher humidities, recovery increased further when food was present versus absent. Moreover, we found that any amount of flour, even a dusting, resulted in over 90% of beetles recovering after insecticide exposure, but when sand was substituted for flour, recovery was 25% lower compared to a no food treatment. These results highlight the importance of how environmental factors and the availability of food influence efficacy of insecticide treatments. Sanitation in food facilities is critically important as even the smallest amount of food present can cause substantial recovery, allowing beetles to escape treated areas and move throughout facilities. Further work pinpointing variation in underlying recovery between different populations and among different insect species is needed to understand local adaptation potential.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vaclav Stejskal, Tomas Vendl, Shiqian Feng, Yujia Qin, Radek Aulicky, Zhihong Li
{"title":"The relationship between taxonomic classification and applied entomology: stored product pests as a model group.","authors":"Vaclav Stejskal, Tomas Vendl, Shiqian Feng, Yujia Qin, Radek Aulicky, Zhihong Li","doi":"10.1093/jisesa/ieaf019","DOIUrl":"10.1093/jisesa/ieaf019","url":null,"abstract":"<p><p>Taxonomy provides a general foundation for research on insects. Using stored product pest (SPP) arthropods as a model group, this article overviews the historical impacts of taxonomy on applied entomology. The article surveys the dynamics of historical descriptions of new species in various SPP taxa; the majority of all species (90%) were described prior to 1925, while the key pests were described prior to 1866. The review shows that process of describing new SPP species is not random but is influenced by following factors: (i) larger species tend to be described earlier than smaller and SPP moths and beetles are described earlier than psocids and mites; (ii) key economic pests are on average described earlier than less significant ones. Considering a species name as a \"password\" to unique information resources, this review also assesses the historical number of synonymous or duplicate names of SPP species. Pests belonging to some higher taxa Lepidoptera and Coleoptera has accumulated more scientific synonyms than those others belonging to Psocoptera and Acari. Number of synonyms positively correlated with the economic importance of SPP species. The review summarized semantic origin of SPP names showing minor proportion of names (17.6%) are toponyms (geography) or eponyms (people), while the majority (82.4%) fall into other categories (descriptive, etc.). It is concluded that awareness of taxonomic advances, including changes to species and higher taxa names, should be effectively communicated to pest control practitioners and applied entomology students, and specifically addressed in relevant textbooks, web media, and databases.</p>","PeriodicalId":16156,"journal":{"name":"Journal of Insect Science","volume":"25 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11966609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}