Journal of economic entomology最新文献_第9页

Effect of fast and slow-acting bait toxicants on tawny crazy ant (Hymenoptera: Formicidae) foraging and nesting in the field. 快效和慢效毒饵对黄疯蚁野外觅食和筑巢的影响。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae284

David H Oi, Rachel A Atchison, Quentin D Read

{"title":"Effect of fast and slow-acting bait toxicants on tawny crazy ant (Hymenoptera: Formicidae) foraging and nesting in the field.","authors":"David H Oi, Rachel A Atchison, Quentin D Read","doi":"10.1093/jee/toae284","DOIUrl":"10.1093/jee/toae284","url":null,"abstract":"Tawny crazy ants (TCAs), Nylanderia fulva (Mayr) are an invasive species that develops extremely large populations that overrun landscapes. Control measures frequently rely on spraying contact insecticides, which often are inadequate. To provide insights for utilizing baits for their control, TCA foraging behavior was examined on liquid ant bait formulations that contained either fast-acting dinotefuran or slow-acting disodium octaborate tetrahydrate (DOT), and the impacts of these baits were assessed. Bayesian modeling of counts from time-lapse photography of TCA feeding on the baits and a control of sucrose solution in the field revealed strong evidence of similar foraging intensities between the control and the DOT bait and less foraging intensity on the dinotefuran bait. TCA abundance on the dinotefuran bait peaked within 8 h, then diminished to smaller feeding bouts over the 3-day study. In contrast, foraging on the DOT and control remained consistently high before bait depletion. The impact of the fast and slow-acting baits in field plots were based on TCA nest sizes and TCA abundance on sausage lures. Bayesian modeling predictions revealed nest sizes declined over the 2 months with bait present while the control had large nests. Abundance on the lures in the dinotefuran plots declined from the start of the study, while with the slow-acting DOT bait, declines in abundance were not lower than the control plot until 30 days after baiting was initiated. Further refinements in baiting with liquid baits containing fast and slow acting active ingredients may provide fast and sustained control of TCA.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"329-338"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new nondestructive method for monitoring red imported fire ant (Hymenoptera: Formicidae) populations in the field. 一种在野外监测红火蚁（膜翅目：蚁科）种群的非破坏性新方法。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae278

Siavash Taravati, Jung Ma, Kathleen Campbell, Dong-Hwan Choe

{"title":"A new nondestructive method for monitoring red imported fire ant (Hymenoptera: Formicidae) populations in the field.","authors":"Siavash Taravati, Jung Ma, Kathleen Campbell, Dong-Hwan Choe","doi":"10.1093/jee/toae278","DOIUrl":"10.1093/jee/toae278","url":null,"abstract":"Solenopsis invicta Buren (Hymenoptera: Formicidae), also known as the red imported fire ant (RIFA), is currently established in many Southern and Central Californian regions. RIFA can be managed using various insecticides, but in recent decades, granular baits have become a standard and effective management tool. To improve and maintain effective RIFA management programs, researchers and pest control experts need to perform careful population monitoring before and after treatments. Despite the availability of various RIFA monitoring methods, many are challenging to perform and are extremely time-consuming. Counting mounds is an easier-to-perform method but may not be reliable in certain places and for detecting low-density populations. Other methods of field sampling and laboratory counting can be cumbersome, destructive, and highly time-consuming. In this article, we are providing research data on a new, fast, and nondestructive field technique for RIFA monitoring using density (ants/ml) measurements. These measurements can be converted into counts and eventually to indices. On average, the density of RIFAs inside our measuring cylinder was 130.8 ± 2.3 ants/ml (Mean ± S.E.). A strong positive and statistically significant correlation was found between the volume of RIFA workers and the number of ants (r = 0.92, P < 0.001).","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"397-402"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142831425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection and functional validation of point mutations in acetylcholinesterase-1 associated with organophosphate resistance in field populations of Helicoverpa armigera. 检测田间 Helicoverpa armigera 群体中与有机磷抗性相关的乙酰胆碱酯酶-1 的点突变并进行功能验证。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae268

Fang Guan, Xin Xiao, Rongrong Dong, Chenyang Wang, Zeng Jin, Shuwen Wu, Yidong Wu, Yihua Yang

{"title":"Detection and functional validation of point mutations in acetylcholinesterase-1 associated with organophosphate resistance in field populations of Helicoverpa armigera.","authors":"Fang Guan, Xin Xiao, Rongrong Dong, Chenyang Wang, Zeng Jin, Shuwen Wu, Yidong Wu, Yihua Yang","doi":"10.1093/jee/toae268","DOIUrl":"10.1093/jee/toae268","url":null,"abstract":"Point mutations in the acetylcholinesterase-1 gene (ace-1) have been associated with resistance to OPs in many insects. However, the presence and function of ace-1 mutations associated with OP resistance in Helicoverpa armigera (Lepidoptera: Noctuidae), a significant lepidopteran pest damaging a wide range of crops, remain largely unexplored. This study investigated resistance to the OP insecticide phoxim in 12 field populations of H. armigera from northern China in 2022, revealing low levels of resistance (2.5- to 6.7-fold). Using an amplicon sequencing approach, we screened for ace-1 mutations in 13,874 moths collected from 114 populations collected between 2006 and 2022. We found 3 amino acid substitutions (A201S, G227E, and F290V) potentially related to OP resistance. The mean frequencies of A201S, G227E, and F290V mutations were 0.0032, 0.0001, and 0.0001, respectively. To assess these mutations' role in OP resistance, we expressed wild-type and mutant AChE1 proteins in Sf9 cells. Biochemical characterization revealed a 3.1-fold and 3.3-fold increase in the I50 of chlorpyrifos-oxon for A201S and F290V mutants compared to the wild-type enzyme, correlating with a 2.9-fold and 2.7-fold decrease in the Ki value. No enzyme activity was observed in the G227E mutant, indicating that only A201S and F290V confer insensitivity to chlorpyrifos-oxon. Our study demonstrates that amplicon sequencing is an effective method for large-scale screening of resistance-associated point mutations in field populations of H. armigera and potentially other insect pests. It also identifies A201S and F290V in AChE1 as potential point mutations conferring OP resistance in field populations of H. armigera.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"359-368"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Postharvest CO2 treatment and cold storage for Drosophila suzukii (Diptera: Drosophilidae) fruit infestation control. 利用采后二氧化碳处理和冷藏控制果实中的铃木果蝇（双翅目：果蝇科）虫害。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae264

Nika Cvelbar Weber, Špela Modic, Primož Žigon, Jaka Razinger

{"title":"Postharvest CO2 treatment and cold storage for Drosophila suzukii (Diptera: Drosophilidae) fruit infestation control.","authors":"Nika Cvelbar Weber, Špela Modic, Primož Žigon, Jaka Razinger","doi":"10.1093/jee/toae264","DOIUrl":"10.1093/jee/toae264","url":null,"abstract":"The invasive pest, spotted wing drosophila (Drosophila suzukii (Matsumura, 1931) or SWD), damages various soft-skinned fruits, severely impacting orchards and vineyards economically. Current sorting practices in commercial production may overlook early-stage SWD infestations, as visible signs take a few days to appear. Our study focused on managing SWD infesting fruits (blueberry, cherry, and raspberry) without visible signs using an artificial atmosphere with elevated CO2 and low temperature. We hypothesized that these factors affect SWD survival and possibly interact, with potential variations among different soft- or stone-fruit species or varieties. High CO2 concentrations and cold storage both negatively affected SWD development. A 24-h 100% CO2 fumigation, without cold storage, significantly reduced SWD infestations in all 3 fruit species studied. On the other hand, 10% CO2 without cold storage did not cause a significant infestation reduction in cherries. Cold storage alone was too slow to be considered effective. Concurrent low-temperature treatment and CO2 treatment reduced the insecticidal efficacy of CO2 fumigation. Optimal fruit sanitation was achieved with a 3-h 100% CO2 treatment at ambient temperature before cold storage. Raspberries were the most suitable host for SWD development, with over a 5-fold higher SWD development compared to blueberries and over 50 times more than in cherries. We discussed the observed interactions between CO2 fumigation and chilling and suggested a simple postharvest SWD management protocol using optimal CO2 levels, exposure times, and chilling periods-achievable without complex equipment.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"274-281"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11818391/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First detection of Bemisia tabaci (Hemiptera: Aleyrodidae) MED in Oklahoma and development of a high-resolution melting assay for MEAM1 and MED discrimination. 在俄克拉荷马州首次检测到 Bemisia tabaci（半翅目：蝼蛄）的 MED，并开发出一种用于 MEAM1 和 MED 鉴别的高分辨率熔融测定法。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae228

Renate Krause-Sakate, Rafaela Gomes Ruschel, Francisco Ochoa-Corona, Sharon A Andreason, Bruno Rossito de Marchi, Marcos Roberto Ribeiro-Junior, Daniele Maria Nascimento, Reese Trujillo, Hugh A Smith, Samuel F Hutton, Sara Wallace

{"title":"First detection of Bemisia tabaci (Hemiptera: Aleyrodidae) MED in Oklahoma and development of a high-resolution melting assay for MEAM1 and MED discrimination.","authors":"Renate Krause-Sakate, Rafaela Gomes Ruschel, Francisco Ochoa-Corona, Sharon A Andreason, Bruno Rossito de Marchi, Marcos Roberto Ribeiro-Junior, Daniele Maria Nascimento, Reese Trujillo, Hugh A Smith, Samuel F Hutton, Sara Wallace","doi":"10.1093/jee/toae228","DOIUrl":"10.1093/jee/toae228","url":null,"abstract":"The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is a polyphagous pest recognized as composed of several cryptic or sibling species. The Middle East-Asia Minor 1 (MEAM1) and the Mediterranean (MED) putative species are invasive and destructive worldwide. The MEAM1 is established throughout the United States, while MED is documented in 27 states. This study determines the status of MED in Oklahoma and develops and validates a high-resolution melting (HRM) assay for discrimination of MEAM1 and MED. In August-October 2022, whiteflies were collected from different host plants in Stillwater, Oklahoma, and identified as species based on analysis of a diagnostic fragment of the mitochondrial cytochrome oxidase I (mtCOI) gene. MED was found in mixed infestations with MEAM1 on both sweetpotato in a greenhouse and cucumber in the field. Other cryptic species were not detected. Sequencing followed by phylogenetic analysis indicated that the MED specimens belonged to the Q2 mitotype. Additionally, the secondary endosymbionts in captured and progeny whiteflies were identified. For rapid discrimination of MEAM1 and MED species, an HRM assay using a single set of primer pairs targeting the mtCOI gene was developed. Species discrimination was tested in 2 laboratories using MEAM1 and MED Q2 mitotype genomic DNA, and a synthetic plasmid containing the MED Q1 mitotype mtCOI fragment. The HRM assay was validated to discriminate MEAM1 from MED Q1 and Q2 mitotypes. This is the first report of B. tabaci MED in Oklahoma and reinforces the need for continued monitoring of this insect species complex.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"45-56"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11818381/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Host plant selection and performance of ambrosia beetles in flood-stressed versus ethanol-injected trees provide implications for management strategies. 在洪水胁迫下与注入乙醇的树木中，神仙甲虫的寄主植物选择和表现为管理策略提供了启示。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae301

Juan Carlos Cambronero-Heinrichs, Christopher M Ranger, Giacomo Santoiemma, Giacomo Cavaletto, Francesca Carloni, Andrea Battisti, Franco Meggio, Davide Rassati

{"title":"Host plant selection and performance of ambrosia beetles in flood-stressed versus ethanol-injected trees provide implications for management strategies.","authors":"Juan Carlos Cambronero-Heinrichs, Christopher M Ranger, Giacomo Santoiemma, Giacomo Cavaletto, Francesca Carloni, Andrea Battisti, Franco Meggio, Davide Rassati","doi":"10.1093/jee/toae301","DOIUrl":"10.1093/jee/toae301","url":null,"abstract":"Ambrosia beetles (Curculionidae: Scolytinae and Platypodinae) are fungus-farming woodborers that can cause damage to the trees they colonize. Some of these beetles target stressed plants that emit ethanol, and management strategies have proposed using ethanol-injected trees as trap trees to monitor or divert dispersing adult females away from valuable crops. In this study, we used container-grown trees from 8 species to compare the effect of ethanol injection versus flooding on ambrosia beetle host selection and colonization success. Our aims were to understand whether ethanol injection is a suitable technique for different ambrosia beetle species and whether its effectiveness varies depending on the tree species used. In addition, we quantified the amount of ethanol in tree tissues to understand whether ethanol concentration could reflect observed differences among treatments and tree species. Our findings demonstrated that ethanol-injected trees were significantly more selected by both Xyleborinus saxesenii and Xylosandrus spp. and that significantly more adult beetles of both taxa emerged from ethanol-injected than flood-stressed trees. In addition, we showed that ethanol injection can trigger attacks by X. saxesenii and Xylosandrus spp. on a variety of deciduous tree species, nullifying the effects of the species-specific characteristics observed on flood-stressed trees, which can only partially be attributed to the amount of ethanol within the plant. This supported the idea that practitioners can potentially select any species of deciduous trees in management programs for ambrosia beetles based on ethanol-injected trees.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"253-261"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11818378/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toxicity and residual activity of insecticides to Grapholita molesta (Lepidoptera: Tortricidae) in apple orchards: implications for insecticide resistance management. 苹果园中杀虫剂对 Grapholita molesta（鳞翅目：涡虫科）的毒性和残留活性：对杀虫剂抗药性管理的影响。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae263

Paloma Stupp, Sabrina Lerin, José Gomes da Silva Filho, Cristiano João Arioli, Daniel Bernardi

{"title":"Toxicity and residual activity of insecticides to Grapholita molesta (Lepidoptera: Tortricidae) in apple orchards: implications for insecticide resistance management.","authors":"Paloma Stupp, Sabrina Lerin, José Gomes da Silva Filho, Cristiano João Arioli, Daniel Bernardi","doi":"10.1093/jee/toae263","DOIUrl":"10.1093/jee/toae263","url":null,"abstract":"Organophosphate (OP) insecticides have been used to control Grapholita molesta (Busck, 1916) in Brazil since 1990. However, the evolution of pest insecticide resistance and toxicological reassessments has led to the replacement of OPs with other chemical groups. This study evaluated the toxicity of the insecticides abamectin + cyantraniliprole (1.1 + 3.7 g a.i./100 L-1), acetamiprid + etofenproxi (9.1 + 16.5 g a.i./100 L-1), emamectin benzoate (0.5 g a.i./100 L-1), Sophora flavescens (Fabales: Fabaceae) (22.8 g a.i./100 L-1), phosmet (87.5 g a.i./100 L-1), and indoxacarb (11.2 g a.i./100 L-1) to eggs, larvae, and adults of G. molesta. Additionally, the residual activity of these insecticides in apple orchards was assessed, and the diagnostic concentration for resistance monitoring was estimated using LC99 values (Lethal Concentration that causes 99% mortality in a susceptible population). In larval studies, all insecticides resulted in mortality rates of more than 90%. The insecticide acetamiprid + etofenproxi reduced larval hatching by 99%. This insecticide with phosmet and Sophora flavescens caused over 80% adult mortality and had a 14-day residual activity in apple orchards. The estimated LC99 (μg.ml-1) for resistance monitoring were 1.75 (indoxacarb), 6.45 (metaflumizone), 9.10 (acetamiprid + etofenproxi), 9.67 (Sophora flavescens), 36.13 (phosmet), and 45.61 (abamectin + cyantraniliprole). The insecticides evaluated have high toxicity for G. molesta, being new tools for integrated pest management and for insecticide resistance management in apple orchards.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"351-358"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The arbuscular mycorrhizal fungus Claroideoglomus etunicatum (Glomerales: Claroideoglomeraceae) inoculated wheat plants mediated responses of Sitobion avenae (Fabricius) (Hemiptera: Aphididae) to water deficit. 摘要用丛枝菌根真菌（球囊科：球囊科）接种小麦植株，介导了小麦对水分亏缺的响应。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae293

Abdul Ghaffar Khoso, Yongqiang Li, Deguang Liu

{"title":"The arbuscular mycorrhizal fungus Claroideoglomus etunicatum (Glomerales: Claroideoglomeraceae) inoculated wheat plants mediated responses of Sitobion avenae (Fabricius) (Hemiptera: Aphididae) to water deficit.","authors":"Abdul Ghaffar Khoso, Yongqiang Li, Deguang Liu","doi":"10.1093/jee/toae293","DOIUrl":"10.1093/jee/toae293","url":null,"abstract":"Arbuscular mycorrhizal fungi may promote growth and stress resilience of plants, particularly under water-deficit conditions. However, interactions among mycorrhizal fungi, wheat plants, and aphids like the English grain aphid Sitobion avenae (Hemiptera: Aphididae) under water-deficit stress are still not well understood. Here, we examined the colonization of the fungus Claroideoglomus etunicatum (Glomerales: Claroideoglomeraceae) on wheat, and its effects on development and behavior of S. avenae under different water regimes. The symbiosis between C. etunicatum and wheat tended to increase the total developmental times of S. avenae nymphs under water deficit, but decreased adult lifespans. Irrespective of water conditions or wheat cultivars (Xinong-979 and Chang-6794), this symbiosis tended to cause higher adult weights and fecundities of S. avenae. These findings suggested that inoculation of this fungus could induce some life history trait trade-offs for S. avenae. Inoculation of C. etunicatum caused significant increases in contents of total amino acids in Xinong-979, and contents of some individual amino acids (e.g., glutamine) in both cultivars. This aphid preferred settling on symbiotic plants, with alate individuals attracted to well-watered Xinong-979 from 4 and Chang-6794 from 24 h postrelease. Increased phloem feeding and reduced pathway phase time for S. avenae were found in symbiotic plants. The fungus C. etunicatum also significantly enhanced wheat growth, especially under water deficit, and increased contents of nonessential and essential amino acids in Xinong-979. Our results highlight complex interactions among fungus symbiosis, wheat cultivars, and water conditions, emphasizing the potential to boost wheat crop resilience in the context of global climate change.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"203-218"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ethanol release patterns and captures of Xylosandrus spp. (Coleoptera: Curculionidae) in ornamental nursery. 观赏苗圃中木沙蝇的乙醇释放规律及捕获。

Journal of economic entomology Pub Date : 2025-02-11 DOI: 10.1093/jee/toae311

Ramkumar Govindaraju, Shimat V Joseph

{"title":"Ethanol release patterns and captures of Xylosandrus spp. (Coleoptera: Curculionidae) in ornamental nursery.","authors":"Ramkumar Govindaraju, Shimat V Joseph","doi":"10.1093/jee/toae311","DOIUrl":"10.1093/jee/toae311","url":null,"abstract":"Xylosandrus crassiusculus Motschulsky and Xylosandrus germanus Blandford are serious ambrosia beetle pests in ornamental nurseries. Three ethanol baits, AgBio low release (LR), AgBio high release (HR), and Trécé are commercially available for use in bottle traps to determine flight activity of adult Xylosandrus spp. However, release patterns of ethanol from these baits under varying temperatures and captures of Xylosandrus spp. are poorly understood. Thus, the objectives of this study were (i) to determine ethanol release rates from these baits under constant and variable temperatures and (ii) to compare relative adult Xylosandrus spp. captures using these baits in ornamental nurseries. When 3-d difference (3-d difference) bait weights were recorded under constant 15.6, 21.1, 26.7, and 32.2 °C, an increase in release rates was recorded with an increase in temperature from 15.6 to 32.2 °C for LR bait. At 32.2 °C, no increase or reduction in the 3-d-difference weights was found for the HR and Trécé baits, respectively, compared to LR bait. The 3-d-difference weights were steady with all 3 baits when temperatures gradually increased and decreased in variable sequence for 30 d. In 2022, 2023, and 2024, although all 3 baits captured adult X. crassiusculus and X. germanus, LR bait captured significantly more numbers of X. crassiusculus than the other 2 baits in 2022 and 2023, and in 2024, X. crassiusculus captures were greater in traps with the Trécé bait than the other 2 baits. Thus, ethanol baits can effectively detect the early flight activity of Xylosandrus spp. adults in ornamental nurseries.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":"298-306"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of alginate hydrogel baits for the management of longlegged ant (Hymenoptera: Formicidae).

Journal of economic entomology Pub Date : 2025-02-10 DOI: 10.1093/jee/toaf011

Ching-Chen Lee, Ming-Yi Lu, Joanne Tzu-Chia Chen, Jia-Wei Tay, Chin-Cheng Scotty Yang, Chung-Chi Lin

{"title":"Development of alginate hydrogel baits for the management of longlegged ant (Hymenoptera: Formicidae).","authors":"Ching-Chen Lee, Ming-Yi Lu, Joanne Tzu-Chia Chen, Jia-Wei Tay, Chin-Cheng Scotty Yang, Chung-Chi Lin","doi":"10.1093/jee/toaf011","DOIUrl":"https://doi.org/10.1093/jee/toaf011","url":null,"abstract":"The longlegged ant, Anoplolepis gracilipes, is a globally destructive invasive species owning to its devastating impacts on biodiversity and ecosystem functions in the regions where it has been introduced. In Taiwan, invasion of A. gracilipes has been associated with the declining of land crab populations in several hotspots. While liquid baiting program has been implemented in those areas, the operation is costly and labor-intensive since it typically requires the use and maintenance of bait stations. The goal of the current study was to evaluate the potential and effectiveness of hydrogel baits laced with borax as an alternative tool to control A. gracilipes. Laboratory studies demonstrated that hydrogel baits containing 3% borax achieved higher A. gracilipes mortality than those containing 2% and 1% borax. Specifically, hydrogel baits containing 3% borax resulted in >90% worker mortality within 21 d post-treatment (LT50 = 5.1 d), along with significant reduction in brood weight (>90%) and substantial queen death (>80% of colony fragments). Furthermore, field experiment indicated that A. gracilipes workers preferentially retrieved small-size hydrogel beads (3.1 mm OD; proportion removed = 1.00 ± 0.00) compared to the larger ones (6.2 mm OD; proportion removed = 0.03 ± 0.03), which will facilitate efficient transfer of toxicant within the colony and may minimize nontarget impact. In conclusion, alginate hydrogel baits with 3% borax appear to be a promising tool against A. gracilipes, although their field efficacy against large supercolonial populations remains to be investigated.","PeriodicalId":94077,"journal":{"name":"Journal of economic entomology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0