Journal of Economic Entomology最新文献_第4页

Vacuum extraction: an effective larval sampling method for spotted-wing drosophila in small fruit crops. 真空提取：一种有效的小型水果作物斑点翼果蝇幼虫取样方法。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad160

Arun Babu, Rosan Adhikari, Ashfaq A Sial

{"title":"Vacuum extraction: an effective larval sampling method for spotted-wing drosophila in small fruit crops.","authors":"Arun Babu, Rosan Adhikari, Ashfaq A Sial","doi":"10.1093/jee/toad160","DOIUrl":"10.1093/jee/toad160","url":null,"abstract":"Detecting and sampling the pest for pest management, either through enumerating their life stages or by quantifying the crop damage, is the cornerstone in deploying integrated pest management. Currently, for spotted-wing drosophila, Drosophila suzukii Matsumura, larval extraction from the fruit samples involves immersing the fruits in hot water, salt, or sugar solution. We are introducing a novel, fast, and effective larval sampling technique where D. suzukii larvae can be extracted from infested fruits by subjecting the fruit samples to vacuum pressure. We optimized the vacuum pressure and vacuum duration for larval extraction from blueberries by testing a range of vacuum pressures and durations. A vacuum pressure of -98 kPa for 60 min resulted in the maximum larval recovery of the small, medium, and large larvae from blueberries. A 30-min incubation at -98 kPa also yielded similar results. Larval extraction at -98 kPa for 60 min on average recovered 61, 70, and 83% of larvae from 2, 4, and 6-day incubated fruit samples, respectively. The fruit sample size (37, 149, and 298 g) did not affect the larval extraction efficacy. Additionally, comparing larval extraction efficacy at -98 kPa with the salt and sugar extraction, incubated for 10, 30, and 60 min, suggests that vacuum extraction is comparable to or more efficient than the salt and sugar methods in extracting larvae from the infested blueberries. Overall, our results indicate that vacuum sampling is a promising method for detecting D. suzukii larval infestation in small fruit crops.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9966287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 1

Molecular mechanism of Enterococcus faecalis-induced phosphine sensitivity in Tribolium castaneum (Coleoptera: Tenebrionidae). 粪肠球菌诱导赤兔Tribolium castaneum磷化氢敏感性的分子机制（鞘翅目：Tenebrionidae）。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad171

Zhengyan Wang, Haisheng Hu, Zhenzhen Chang, Shan Zhang, Yujie Lu

{"title":"Molecular mechanism of Enterococcus faecalis-induced phosphine sensitivity in Tribolium castaneum (Coleoptera: Tenebrionidae).","authors":"Zhengyan Wang, Haisheng Hu, Zhenzhen Chang, Shan Zhang, Yujie Lu","doi":"10.1093/jee/toad171","DOIUrl":"10.1093/jee/toad171","url":null,"abstract":"Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) has developed extensive resistance to the fumigant phosphine. Knowledge of the resistance mechanisms offers insight into resistance management. Although several studies have highlighted the positive or negative impacts of symbiotic microbiota on host pesticide resistance, little is known about the association between gut symbionts and host phosphine resistance. To reveal the effect of the gut bacterium, Enterococcus faecalis (Andrewes & Horder) (Lactobacillales: Enterococcaceae), on host phosphine resistance and its underlying mechanism, we investigated mortality, fitness, redox responses, and immune responses of adult T. castaneum when challenged with E. faecalis inoculation and/or phosphine exposure. When T. castaneum was exposed to phosphine, E. faecalis inoculation decreased its survival and female fecundity and aggravated its oxidative stress. Furthermore, E. faecalis inoculation suppressed the expression and activity of superoxide dismutase, catalase, and peroxidase in phosphine-exposed T. castaneum. Enterococcus faecalis inoculation also triggered excessive host immune responses, including the immune deficiency signaling pathway and the dual oxidase-reactive oxygen species system. These findings suggest that E. faecalis likely modulates host phosphine resistance by interfering with the redox system. This provides information for examining the symbiotic function in the insect-microorganism relationship and new avenues for pesticide resistance management.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10123456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 1

Genetic differentiation and species diversification of the Adoxophyes orana complex (Lepidoptera: Tortricidae) in East Asia. 东亚扁尾藻复合体的遗传分化和物种多样性（鳞翅目：扁尾藻科）。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad155

Cheng-Lung Tsai, Li-Cheng Shih, Wen-Bin Yeh, Bong-Kyu Byun, Utsugi Jinbo, Fang-Yu Ning, I-Hsin Sung

{"title":"Genetic differentiation and species diversification of the Adoxophyes orana complex (Lepidoptera: Tortricidae) in East Asia.","authors":"Cheng-Lung Tsai, Li-Cheng Shih, Wen-Bin Yeh, Bong-Kyu Byun, Utsugi Jinbo, Fang-Yu Ning, I-Hsin Sung","doi":"10.1093/jee/toad155","DOIUrl":"10.1093/jee/toad155","url":null,"abstract":"The Adoxophyes tea tortrix (Lepidoptera: Tortricidae) is a group of leaf rollers that cause enormous economic losses on tea and apple crops. In East Asia, taxonomic ambiguity of the Adoxophyes orana complex (AOC), which consists of A. orana, A. dubia, A. honmai, and A. paraorana, has persisted for decades because of vague diagnostic characters. In this study, differences in the AOC were examined to improve species identification, determine genetic variations, and develop control strategies. Analyses revealed that A. orana comprised 2 lineages, a widely distributed Palearctic lineage and an East Asian lineage that was nested with other Asian species. Genetic divergence of >3% is proposed to confirm the AOC species that would benefit subsequent taxonomic revision. The monophyletic Taiwanese A. sp. with 2.8-4% from other AOC species appeared to suggest it as an independent taxon, and low interspecific divergence between A. honmai and A. dubia of 0.3% indicated possibility of recent divergence or intraspecific variations. Our result further suggested that the Z9-14:Ac ratio of semiochemicals could be a reference for the reblending of pheromone attractants in Taiwanese tea plantations. Moreover, the AOC species appeared to have a tendency of specific geographic distributions, with A. dubia and A. honmai in Japan and China, A. paraorana in Korea, and A. sp. in Taiwan. Maintaining the unique genetic composition of Adoxophyes species in each geographic region and preventing the possible invasions into those AOC-free countries through the transportation of host plants are essential in managing the AOC in East Asia.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10297738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Growing media is the major source of damaging population of Systena frontalis (Coleoptera: Chrysomelidae) in ornamental plant nurseries. 生长培养基是观赏植物苗圃中破坏额叶金花（鞘翅目：金花科）种群的主要来源。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad165

Rehan Arshad, Juang Horng Chong, Alejandro I Del Pozo-Valdivia, Shimat V Joseph

{"title":"Growing media is the major source of damaging population of Systena frontalis (Coleoptera: Chrysomelidae) in ornamental plant nurseries.","authors":"Rehan Arshad, Juang Horng Chong, Alejandro I Del Pozo-Valdivia, Shimat V Joseph","doi":"10.1093/jee/toad165","DOIUrl":"10.1093/jee/toad165","url":null,"abstract":"Systena frontalis (F.) (Coleoptera: Chrysomelidae) is a serious pest of ornamental shrubs in containerized ornamental plant nurseries in the central and eastern United States. Adult S. frontalis cause numerous shot holes on foliage, rendering ornamental plants unmarketable. Growing media in plant containers is an overwintering site of S. frontalis, but the extent to which adults emerging from the growing media can damage the plants is unclear. Experiments were conducted on panicled hydrangea (Hydrangea paniculata Siebold) in Georgia, North Carolina, and Virginia nurseries in the spring of 2021 and 2022 to answer this question. The treatments were (i) canopy caged, (ii) whole-plant caged, and (iii) noncaged hydrangea plants. In all 3 states, beetle abundance and feeding damage found on caged (whole plant) and noncaged plants were significantly greater than those on plants where only the canopy was caged. In most sites and years, beetle abundance and feeding damage were not significantly different between the noncaged plants and those where the canopy and containers were caged, suggesting that the majority of S. frontalis emerged from the growing media and the majority of damage suffered by the hydrangea plants were caused by beetles emerging from the containers. Because growing media contributed to a significant proportion of the S. frontalis population in a nursery, treatment targeting larvae in the growing media should be a critical component of a holistic management plan against S. frontalis.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10025525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The aphid Pentalonia nigronervosa (Hemiptera: Aphididae) takes advantage from the quality change in banana plant associated with Banana bunchy top virus infection. 黑穗五殖蚜（半翅目：蚜科）利用与香蕉束顶病毒感染相关的香蕉植株质量变化。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad130

Ignace Safari Murhububa, Kévin Tougeron, Claude Bragard, Marie-Laure Fauconnier, David Mugisho Bugeme, Espoir Bisimwa Basengere, Jean Walangululu Masamba, Thierry Hance

{"title":"The aphid Pentalonia nigronervosa (Hemiptera: Aphididae) takes advantage from the quality change in banana plant associated with Banana bunchy top virus infection.","authors":"Ignace Safari Murhububa, Kévin Tougeron, Claude Bragard, Marie-Laure Fauconnier, David Mugisho Bugeme, Espoir Bisimwa Basengere, Jean Walangululu Masamba, Thierry Hance","doi":"10.1093/jee/toad130","DOIUrl":"10.1093/jee/toad130","url":null,"abstract":"Viral diseases can change plant metabolism, with potential impacts on the quality of the plant's food supply for insect pests, including virus vectors. The banana aphid, Pentalonia nigronervosa Coquerel, is the vector of the Banana bunchy top virus (BBTV), the causal agent of Banana bunchy top disease (BBTD), the most devastating viral disease of bananas in the world. The effect of BBTV on the life-history traits and population dynamics of P. nigronervosa remains poorly understood. We therefore studied the survival rate, longevity, daily fecundity per aphid, tibia length, population growth, and winged morph production of a P. nigronervosa clone grown on healthy or infected, dessert, or plantain banana plants. We found that daily fecundity was higher on infected banana than on healthy banana plants (plantain and dessert), and on plantain than on dessert banana plants (healthy and infected). Survival and longevity were lower on infected dessert bananas than on other types of bananas. In addition, virus infection resulted in a decrease in aphid hind tibia length on both plant genotypes. The survival and fecundity table revealed that the aphid net reproduction rate (Ro) was highest on plantains (especially infected plantain), and the intrinsic growth rate (r) was highest on infected plants. Finally, the increase of aphids and alate production was faster first on infected plantain, then on healthy plantain, and lower on dessert banana (infected and uninfected). Our results reinforce the idea of indirect and plant genotype-dependent manipulation of P. nigronervosa by the BBTV.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9840348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A 2-component blend of coconut oil-derived fatty acids as an oviposition deterrent against Drosophila suzukii (Drosophilidae: Diptera). 一种椰子油衍生脂肪酸的双组分混合物，作为对suzukii果蝇（果蝇科：直翅目）的产卵威慑物。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad092

Gwang Hyun Roh, Linnea Meier, Binita Shrestha, Stephen P Hesler, Junwei J Zhu, Paul E Kendra, Gregory M Loeb, Jia-Wei Tay, Dong H Cha

{"title":"A 2-component blend of coconut oil-derived fatty acids as an oviposition deterrent against Drosophila suzukii (Drosophilidae: Diptera).","authors":"Gwang Hyun Roh, Linnea Meier, Binita Shrestha, Stephen P Hesler, Junwei J Zhu, Paul E Kendra, Gregory M Loeb, Jia-Wei Tay, Dong H Cha","doi":"10.1093/jee/toad092","DOIUrl":"10.1093/jee/toad092","url":null,"abstract":"Coconut free fatty acid (CFFA), a mixture of 8 fatty acids derived from coconut oil, is an effective repellent and deterrent against a broad array of hematophagous insects. In this study, we evaluated the oviposition deterrent activity of CFFA on spotted-wing drosophila (SWD; Drosophila suzukii), a destructive invasive pest of berries and cherries, and identified bioactive key-deterrent compounds. In laboratory 2-choice tests, CFFA deterred SWD oviposition in a dose-dependent manner with the greatest reduction (99%) observed at a 20-mg dose compared with solvent control. In a field test, raspberries treated with 20-mg CFFA received 64% fewer SWD eggs than raspberries treated with the solvent control. In subsequent laboratory bioassays, 2 of CFFA components, caprylic and capric acids, significantly reduced SWD oviposition by themselves, while 6 other components had no effect. In choice and no-choice assays, we found that a blend of caprylic acid and capric acid, at equivalent concentrations and ratio as in CFFA, was as effective as CFFA, while caprylic acid or capric acid individually were not as effective as the 2-component blend or CFFA at equivalent concentrations, indicating the 2 compounds as the key oviposition deterrent components for SWD. The blend was also as effective as CFFA for other nontarget drosophilid species in the field. Given that CFFA compounds are generally regarded as safe for humans, CFFA and its bioactive components have potential application in sustainably reducing SWD damage in commercial fruit operations, thereby reducing the sole reliance on insecticides.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10534316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Burkholderia spp.-based biopesticide controls wireworms (Coleoptera: Elateridae) in potatoes. 基于伯克霍尔德菌属的生物杀虫剂控制马铃薯中的线虫（鞘翅目：鞘翅科）。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad146

Mika K Pagani, Timothy B Johnson, Hélène B Doughty, Kelly C McIntyre, Thomas P Kuhar

{"title":"Burkholderia spp.-based biopesticide controls wireworms (Coleoptera: Elateridae) in potatoes.","authors":"Mika K Pagani, Timothy B Johnson, Hélène B Doughty, Kelly C McIntyre, Thomas P Kuhar","doi":"10.1093/jee/toad146","DOIUrl":"10.1093/jee/toad146","url":null,"abstract":"Wireworms (Coleoptera: Elateridae) are economically significant pests of potatoes (Solanum tuberosum), damaging the marketable portion of the crop by feeding and tunneling into tubers. While conventional potato growers use the few registered synthetic insecticides to control wireworms, certified organic growers are left with less options due to the limited effectiveness of the available insecticides. Biologically derived pesticides provide an additional alternative for both systems. Certain gram-negative proteobacteria, such as Burkholderia spp., possess insecticidal compounds. However, very little is known about their efficacy on wireworms. From 2018 to 2021, we conducted experiments in Virginia to assess the efficacy of a Burkholderia spp.-based commercial pesticide, Majestene, as a wireworm control in potatoes. In a lab experiment, soil drench application of this insecticide at a rate of 66 g a.i. per 1 liter resulted in 30% wireworm mortality and significantly reduced wireworm feeding damage on potato tubers. In the field, in-furrow applications of Burkholderia spp. at a rate of 17.66 kg a.i. per ha significantly reduced wireworm damage to tubers in 2 of 7 field experiments conducted. By comparison, the commercial standard insecticide, bifenthrin, significantly reduced tuber damage in 3 of the 7 field experiments. Our study demonstrates the prospect for proteobacteria-derived insecticides for control of wireworms and potentially other soil-dwelling insects. In conclusion, findings present growers with another option to combat wireworm pressure, especially in organic systems.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9851683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Impacts of black soldier fly, (Diptera: Stratiomyidae) larval frass on tomato production. 黑蝇幼虫对番茄生产的影响。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad150

Maria Y Chavez, Mark Uchanski, Jeffery K Tomberlin

{"title":"Impacts of black soldier fly, (Diptera: Stratiomyidae) larval frass on tomato production.","authors":"Maria Y Chavez, Mark Uchanski, Jeffery K Tomberlin","doi":"10.1093/jee/toad150","DOIUrl":"10.1093/jee/toad150","url":null,"abstract":"The \"insects as food and feed\" movement is gaining considerable momentum as a novel means to provide protein to people (i.e., food) and other animals (i.e., feed). Insects require significantly fewer resources, such as water and land, to produce, process, and distribute as a food or feed source. While the production of insect biomass has received considerable attention for use as food or feed, little is known about the value of the residual materials remaining after digestion. One insect, the black soldier fly, Hermetia illucens (L.) (Diptera: Stratiomyidae), can generate large quantities of residual (i.e., frass) that is high in nitrogen, phosphorus, and potassium. These materials could serve as a partial replacement for fertilizer or peat, thus creating added value to the insects as food and feed sector. Greenhouse studies were designed to investigate the use of frass in vegetable production. In pot studies with tomatoes, different ratios of peat:vermicompost and peat:insect frass were compared to a 100% peat control. Across all other parameters, tomato fruits and vegetative biomass did not produce significant differences across treatments, indicating results were comparable to the control (i.e., 100% peat). Thus, replacing peat with black soldier fly frass is a viable option and could allow for the peat industry to become more sustainable and regenerative. However, it should be noted that average individual tomato fruit weight was significantly (P < 0.05) higher (by 19%) in the vermicompost 10% treatment compared to the control, which did not differ from treatments including black soldier fly frass.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9876529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Seasonal density and natural mortality of Halyomorpha halys (Stål) and indigenous stink bugs (Hemiptera: Pentatomidae) in a field crop agroecosystem. 田间作物农业生态系统中Halyomorpha halys（Stål）和本土蝽（半翅目：蝽科）的季节密度和自然死亡率。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad159

P Glynn Tillman, Erin E Grabarczyk, Katelyn A Kesheimer, Rhammohan Balusu

{"title":"Seasonal density and natural mortality of Halyomorpha halys (Stål) and indigenous stink bugs (Hemiptera: Pentatomidae) in a field crop agroecosystem.","authors":"P Glynn Tillman, Erin E Grabarczyk, Katelyn A Kesheimer, Rhammohan Balusu","doi":"10.1093/jee/toad159","DOIUrl":"10.1093/jee/toad159","url":null,"abstract":"Stink bugs (Hemiptera: Pentatomidae), including the exotic Halyomorpha halys (Stål), Nezara viridula (L.), and other indigenous species, are pests that damage a variety of agricultural crops. At a study site in the southeastern United States, we measured the density of stink bug species and patterns of parasitism and predation on corn, cotton, and soybean and host trees in an adjacent woodline. We assessed parasitism and predation of naturally laid egg masses in crops and sentinel egg masses in host trees and used pheromone-baited traps to determine H. halys seasonal development. Overall, H. halys and N. viridula were the dominant bugs observed. Adult H. halys were first detected each year on trees, followed by corn, and then cotton and soybean, suggesting that trees served as a source of H. halys dispersing into crops. For H. halys, more nymphs were captured in soybean than in corn or cotton. For N. viridula, more adults were captured in corn and cotton than in soybean, and more nymphs were captured in corn during 2019 and 2021 than in 2020. Percentage parasitism of N. viridula egg masses (74.2%) was higher than than that for H. halys egg masses (54.3%). Accordingly, conservation biological control has the potential to enhance parasitism of indigenous stink bugs and H. halys in field crop agroecosystems.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9965760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Distribution and fixed-precision sampling plans for diamondback moth (Lepidoptera: Plutellidae), on winter-spring cabbage. 冬春甘蓝小菜蛾的分布和固定精度采样计划（鳞翅目：小菜蛾科）。

IF 2.2 2区农林科学

Journal of Economic Entomology Pub Date : 2023-10-10 DOI: 10.1093/jee/toad156

Derick Nomuh Forbanka, Mxolisi Arnold Stemele, Lelethu Unathi-Nkosi Peter Heshula, William Diymba Dzemo, Daniel Ashie Kotey, Amon Taruvinga, Pfarelo Grace Tshivhandekano

{"title":"Distribution and fixed-precision sampling plans for diamondback moth (Lepidoptera: Plutellidae), on winter-spring cabbage.","authors":"Derick Nomuh Forbanka, Mxolisi Arnold Stemele, Lelethu Unathi-Nkosi Peter Heshula, William Diymba Dzemo, Daniel Ashie Kotey, Amon Taruvinga, Pfarelo Grace Tshivhandekano","doi":"10.1093/jee/toad156","DOIUrl":"10.1093/jee/toad156","url":null,"abstract":"The diamondback moth (Plutella xylostella L.) is the most destructive insect pest on cabbage (Brassica oleracea var. capitata L.). Infestation by this pest usually results in the indiscriminate use of insecticides by farmers due to a lack of sampling plans for this pest. Sampling plans for P. xylostella management decisions on winter-spring cabbage in the Eastern Cape Province of South Africa were developed, through population monitoring that comprised weekly counts of immature stages of P. xylostella on 60 plants for 11 wk each during the winter and spring seasons. The mean density-variance relationship was used to describe the distribution of the pest, and number of infested plants was used to develop a fixed-precision sampling plan. All plant growth stages preceding maturation were vulnerable to P. xylostella damage resulting in yield losses. A high aggregation of P. xylostella on cabbage was observed in spring than in winter. The average sample number to estimate P. xylostella density within a 15% standard error of the mean was 35 plants. Furthermore, the estimated plant proportion action threshold (AT) was 51% with density action thresholds of 0.50 and 0.80 for spring and winter, respectively. Fitting P. xylostella cumulative counts in the winter and spring sampling plans resulted in 100% and 45% reduction in insecticide treatments. The similarity of sample size and ATs between both seasons provides evidence that a single sampling plan is practical for all cabbage growing seasons. The similarity of the estimated ATs to those acceptable in established integrated pest management programs indicates reliability.","PeriodicalId":15632,"journal":{"name":"Journal of Economic Entomology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10710536/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10030178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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