Journal of Asia-pacific Entomology最新文献

{"title":"Antifeedant and contact toxicity activity of crude extracts from 10 plants to red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae)","authors":"Yi-Bo Guo,&nbsp;Zi-Jian Liu,&nbsp;Ying-Ying Ye,&nbsp;You-Yang Chen,&nbsp;Zheng-Wei Wu","doi":"10.1016/j.aspen.2024.102350","DOIUrl":"10.1016/j.aspen.2024.102350","url":null,"abstract":"<div><div>The red imported fire ant, <em>Solenopsis invicta,</em> is a destructive invasive pest that threatens ecological security in China. This study aimed to assess the bioactivity of ethanol crude extracts from 10 plants (<em>Plectranthus hadiensis</em>, <em>Cnidium monnieri</em>, <em>Kaempferia galanga</em>, <em>Alpinia galanga</em>, <em>Perilla frutescens</em>, <em>Melia toosendan</em>, <em>Rosmarinus officinalis</em>, <em>Tripterygium wilfordii</em>, <em>Illicium verum</em>, <em>Scutellaria baicalensis</em>) against <em>S. invicta</em>. The crude extract of <em>K. galanga</em> exhibited the strongest non-selective antifeedant activity at 50 mg/mL with an antifeedant rate reaching 52.67 % after 1 d of treatment. Additionally, the crude extract of <em>R. officinalis</em> showed the best selective antifeedant activity at 50 and 10 mg/mL with selective antifeedant rates of 69.33 % and 56.33 %, respectively. Furthermore, the results demonstrated that <em>T. wilfordii</em> exhibited excellent contact toxicity activity against <em>S. invicta,</em> with corrected mortality rates reaching 91.33 % and 98.00 % at 30 mg/mL after 1 and 2 d, respectively, and reaching 100 % mortality at 50 mg/mL. In conclusion, the crude extracts of <em>K. galanga</em> and <em>R. officinalis</em> displayed promising antifeedant activities against <em>S. invicta</em> while <em>T. wilfordii</em> showed potential as an alternative method for controlling this pest through its contact toxicity activity.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"28 1","pages":"Article 102350"},"PeriodicalIF":1.1,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093974","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":"Comparison of phosphorescent pigment dissemination for bee vectoring by Apis cerana and Apis mellifera on apple flowers","authors":"Jin Hyeok Choi ,&nbsp;Na Hyeon Kim ,&nbsp;Woohyung Lee ,&nbsp;Soon-Il Kim ,&nbsp;Kil Won Kim ,&nbsp;Myeong-Lyeol Lee ,&nbsp;Hyung Wook Kwon","doi":"10.1016/j.aspen.2024.102348","DOIUrl":"10.1016/j.aspen.2024.102348","url":null,"abstract":"<div><div>The bee vectoring technology, which utilizes the pollination behavior of bees to control pests and diseases of crops, has been demonstrated in various studies. Bee vectoring using honey bees has primarily focused on European honey bee, <em>Apis mellifera</em>. This study aims to compare the activity and dissemination efficiency of <em>A. mellifera</em> and <em>A. cerana</em> in apple flowers. To observe and track the dissemination process by honey bees, the microbial agent (<em>Bacillus amyloliquefaciens</em> MBI600 against fire blight) mixed with the phosphorescent pigment (MAMP) was used. <em>A. cerana</em> began foraging earlier (5:36 AM) and continued longer (13.39 h) than <em>A. mellifera</em> (6:27 AM and 12.45 h)<em>.</em> As the temperature increased, <em>A. cerana</em> showed higher foraging activity than <em>A. mellifera</em>. At 9 a.m., <em>A. mellifera</em> spent more time on flowers (9.2 ± 5.4 sec) compared to <em>A. cerana</em> (7.0 ± 7.8 sec). The detection rate of phosphorescent pigment on apple flowers was 100 % for both species. On the stigma, the detection rates were similar, with <em>A. mellifera</em> at 98.0 % and <em>A. cerana</em> at 96.0 %. Both species showed 100 % detection rates on the anther. After two supplies of MAMP, <em>A. mellifera</em> delivered an average of 6.6 µg of phosphorescent pigment per flower, while <em>A. cerana</em> delivered 4.9 µg. However, there was no significant difference between the two species. While it is known that one <em>A. cerana</em> worker delivers a smaller amount on its body than <em>A. mellifera</em>, the amount delivered to a single flower during the release period of the honey bees was similar between the two species. This is presumed to result from differences in their foraging behaviors and activities. As a result, <em>A. cerana</em> could be an alternative vectoring bee in small-scale orchards. It could also be used in orchard environments where the use of <em>A. mellifera</em> is restricted, such as under low-temperature conditions.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"28 1","pages":"Article 102348"},"PeriodicalIF":1.1,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098569","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}

{"title":"Role of windbreaks on ants (Hymenoptera, Formicidae) conservation in a cotton-growing agroecosystem of the humid savannah in Togo","authors":"Titati Bassouo N’tie ,&nbsp;Boris Dodji Kasseney ,&nbsp;Mondjonnesso Gomina ,&nbsp;Panawé Tozoou ,&nbsp;Eyabana Mollong ,&nbsp;Adjovi Djifa Amoudji ,&nbsp;Essohouna Bassaï Bodjona ,&nbsp;Pikassélé Komlan Akantetou ,&nbsp;Wouter Dekoninck ,&nbsp;Yaovi Nuto ,&nbsp;Panopèndou Wiyao Poutouli ,&nbsp;Abdoulaye Baïla Ndiaye ,&nbsp;Kolo Yeo ,&nbsp;Adolé Isabelle Glitho","doi":"10.1016/j.aspen.2024.102349","DOIUrl":"10.1016/j.aspen.2024.102349","url":null,"abstract":"<div><div>Intensive agriculture and monoculture lead to significant reduction, or loss, of the initial biodiversity. This reduction or loss of biodiversity, can be mitigated by the presence of windbreaks around the fields that serve not only as natural barrier against adverse weather conditions but also as refuge for critical organisms. The aim of this study was to determine the role of natural windbreaks in the conservation of ants at the Experimental Station of the <em>Centre de Recherche Agronomique de la Savane Humide</em> in Kolokopé (Togo). Ants’ diversity was assessed in two cotton fields and their surrounding natural windbreaks using pitfall traps and monolith method in 100 m x 2 m transects. In total, 58 ant species belonging to 22 genera in six subfamilies (Dolichoderinae, Dorylinae, Formicinae, Myrmicinae, Ponerinae and Proceratinae) were identified. The species richness of ants was higher in the windbreaks (43 and 36 species) than the cotton fields (15 and 19). The occurrence of ants was also higher in the windbreaks (35.65 % and 36.24 %) than the cotton fields (11.69 % and 16.42 %). Thirty-four out of the 58 species were sampled exclusively in the windbreaks, compared to only two species exclusively sampled in the cotton fields (<em>Crematogaster</em> sp.3 and <em>Lepisiota</em> sp.3), while only three species were common for all the habitats (<em>Camponotus flavomarginatus</em> Mayr, 1862, <em>Tetramorium</em> sp.1 and <em>Tetramorium simillimum</em> (Smith, 1851)). The study shows that ants were more diversified and active in the windbreaks than the cotton fields. Windbreaks, characterized by less anthropic disturbance, could function as refuge for ants within this agroecosystem.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"28 1","pages":"Article 102349"},"PeriodicalIF":1.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098568","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}

{"title":"RNA sequencing analysis uncovers the role of aldehyde oxidase TcAOX2 in regulating toxic substance susceptibility in the red flour beetle, Tribolium castaneum","authors":"Shanshan Gao ,&nbsp;Kui Liu ,&nbsp;Shuang Xue ,&nbsp;Can Zhou ,&nbsp;Guangyan Zhang ,&nbsp;Mengyi Guo ,&nbsp;Yizhuo Cao","doi":"10.1016/j.aspen.2024.102351","DOIUrl":"10.1016/j.aspen.2024.102351","url":null,"abstract":"<div><div>Aldehyde oxidase (AOX) is a class of metabolic enzymes, which can make <em>T. castaneum</em> resistant to aldehyde insecticides and thus increase the difficulty of control. In this study, we first examined the killing effect of benzaldehyde, one of the main active components of mugwort essential oil, to <em>T. castaneum</em> and demonstrated the involvement of TcAOX2 in regulating the sensitivity of <em>T. castaneum</em> to benzaldehyde. Subsequently, we identified a total of 105 differentially expressed genes relative to controls by RNA sequencing (RNA-Seq) analysis of <em>T. castaneum</em> late larvae injected with ds<em>TcAOX2</em>, including 67 up-regulated and 38 down-regulated expressed genes. Analysis and functional annotation of differentially expressed genes using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG). The results showed that the expression of <em>apolipoprotein D</em>, <em>carboxypeptidase A</em>, <em>serine protease P40</em>, <em>pancreatic triacylglycerol lipase</em>, and other genes related to immunity and metabolism, their expression also decreased with the decrease of <em>TcAOX2</em> expression. The down-regulation of the expression of these genes may make <em>T. castaneum</em> less immune and less able to cope with stressful environments. This suggests that changes in <em>TcAOX2</em> gene expression may affect the expression of these metabolism- or immunity-related genes, which in turn affects <em>T. castaneum</em> sensitivity to external toxicants. In conclusion, our results provide a theoretical basis for exploring the detoxification mechanism of aldehyde oxidase in <em>T. castaneum</em> and for screening target genes in response to external stimuli.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"28 1","pages":"Article 102351"},"PeriodicalIF":1.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757664","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}

{"title":"Predation performance of Podisus nigrispinus (DALLAS) (Hemiptera: Pentatomidae) in caterpillars of Spodoptera eridania (CRAMER) (Lepidoptera: Noctuidae)","authors":"José Romário de Carvalho ,&nbsp;Luis Moreira Araujo Junior ,&nbsp;Alixelhe Pacheco Damascena ,&nbsp;Pedro Hiroshi Passos Ikuno ,&nbsp;Regiane Cristina de Oliveira ,&nbsp;José Salazar Zanuncio Junior ,&nbsp;Dirceu Pratissoli ,&nbsp;José Cola Zanuncio","doi":"10.1016/j.aspen.2024.102345","DOIUrl":"10.1016/j.aspen.2024.102345","url":null,"abstract":"<div><div>Reducing the diversification of agroecosystems has minimized the occurrence of natural enemies and favored that of pest insects. <em>Spodoptera eridania</em> (CRAMER) (Lepidoptera: Noctuidae) is a cosmopolitan insect-pest that has a high range of economically important crops as hosts. In order to suppress the population increase of this pest, biological control becomes an interesting alternative. The objective of this study was to verify the predatory performance of <em>Podisus nigrispinus</em> (DALLAS) (Hemiptera: Pentatomidae) on <em>S. eridania</em> caterpillars as a function of predator age, aiming to understand their potential for your use as a biological control agent in pest management programs. The performance bioassay was carried out using the methodology of functional response with measures repeated in the time, seeking to understand the influence of the age of the predator and the density of prey on its potential. The sphericity between the ages and predation of the predator was verified. A survival analysis was performed to verify if the number of preys would affect the predator’s longevity. The functional response of type II was observed, with the Holling model better fitted to the data. The parameters, search efficiency (<em>a</em>) and handling time (<em>Th</em>), were affected by the age of the predator. The efficiency tended to decrease, while the handling time increased, as the predator’s age increased. However, <em>P. nigrispinus</em> was estimated to consume 145 caterpillars up to the age of 17 days. Younger predators have the greatest estimation of the maximum number of <em>S. eridania</em> caterpillars consumed. The predator’s survival curves according to number of preys were similar. Moreover, the predation habit occurs throughout the adult age of the predator.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"28 1","pages":"Article 102345"},"PeriodicalIF":1.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150052","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}

{"title":"Effects of interspecific sex pheromones on the trapping efficiency of five pest species in an apple orchard","authors":"Xueli Wang ,&nbsp;Heng Su ,&nbsp;Juan Wang ,&nbsp;Jinyong Zhang","doi":"10.1016/j.aspen.2024.102344","DOIUrl":"10.1016/j.aspen.2024.102344","url":null,"abstract":"<div><div>The species <em>Grapholita molesta</em>, <em>Adoxophyes orana</em>, <em>Carposina sasakii</em>, <em>Apolygus lucorum</em>, and <em>Lithocolletis ringoniella</em> are the most important insect pests in apple orchards in China, and their outbreak cycles are partially overlapping. Sex pheromone-based pest monitoring technique is an effective tool for decision-making regarding the use of insecticides. Interactions between interspecific pheromones of pests have not been widely explored, especially of the phylogenetically distant species that have completely different pheromone components. It is unclear whether sex pheromone lures from the five pests could be applied together without compromising their individual effectiveness. To address this knowledge gap, different combinations of commercially available sex pheromone lures were placed in the same trap to evaluate the interactions of interspecific sex pheromones in the field. The annual occurrence and peak of these five pests in the experimental apple orchard were investigated, and the sex pheromone lure of <em>A. lucorum</em> had no impact on the population dynamics and trap catches of <em>A. orana</em> or <em>L. ringoniella</em>. Similarly, the sex pheromone lures of <em>A. orana, G. molesta, C. sasakii</em>, or <em>L. ringoniella</em> did not influence the presence and trap catches of <em>A. lucorum.</em> The sex pheromone lure of <em>A. lucorum</em> can be used separately or in combination with those of four other pests in apple orchards<em>.</em> The study provided a theoretical foundation for effectively managing these five pests by integrating their sex pheromone lures in orchards.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"27 4","pages":"Article 102344"},"PeriodicalIF":1.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704175","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}

{"title":"Control efficacy of eight insecticides on Myzus persicae (Hemiptera: Aphididae) and insecticide resistance development of aphid populations collected from kimchi cabbage in South Korea","authors":"Jung-Wook Kho ,&nbsp;Joo-Young Kim ,&nbsp;Minhyung Jung ,&nbsp;Young Su Lee ,&nbsp;Doo-Hyung Lee","doi":"10.1016/j.aspen.2024.102340","DOIUrl":"10.1016/j.aspen.2024.102340","url":null,"abstract":"<div><div>Insecticide control efficacy was investigated with <em>Myzus persicae</em> (Hemiptera: Aphididae) populations collected on kimchi cabbage across South Korea, and their insecticide resistance levels were evaluated. Using a standard leaf-dip bioassay, the lethality at recommended active ingredient rate and lethal concentration 50 (LC₅₀) were acquired. Then, the resistance ratio was calculated as ratio between LC₅₀ of field population and LC₅₀ of laboratory population. Finally, regression analysis was conducted between the log-scaled resistance ratio and the lethality to address associations between the two estimators. Overall, sulfoxaflor and spirotetramat were the most effective insecticides, where &gt; 80 % lethality was observed from almost all local populations. Nevertheless, five out of 12 local populations showed the resistance ratio &gt; 5 to sulfoxaflor, suggesting resistance development to the insecticide. Imidacloprid and pyrifluquinazon also offered effective means to control <em>M. persicae</em>. However, large variations in the lethality, as well as the resistance ratio, were observed in imidacloprid. Deltamethrin was the least effective at recommended active ingredient rate yielding 20.2 to 63.2 % lethality, despite its low resistance ratio values. Finally, regression analysis revealed that there was in general significant negative correlation between the resistance level and the insecticide control efficacy in the insecticides evaluated. Moreover, the insecticide control efficacy declined with substantially varying rates among the insecticides with flonicamid, thiacloprid, and deltamethrin showing steeper slopes. These results indicate that both the current control efficacy and its projected decline regarding the resistance development should be taken into account together to formulate effective and sustainable management programs against <em>M. persicae</em>.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"27 4","pages":"Article 102340"},"PeriodicalIF":1.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704176","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}

{"title":"Female sex pheromone of Spodoptera frugiperda Vietnam population and a selected lure for adult monitoring in maize fields","authors":"Tran Thi Thu Phuong ,&nbsp;Takeshi Fujii ,&nbsp;Yukio Ishikawa ,&nbsp;Nguyen Duc Tung ,&nbsp;Ho Thi Thu Giang","doi":"10.1016/j.aspen.2024.102343","DOIUrl":"10.1016/j.aspen.2024.102343","url":null,"abstract":"<div><div>The fall armyworm (FAW), <em>Spodoptera frugiperda</em> (J.E. Smith) (Lepidoptera: Noctuidae), is a serious polyphagous insect pest that has a preference for maize and which can cause considerable damage to crops, resulting in significant crop losses. It is now established in many countries worldwide. Female sex pheromones play an important role in monitoring and mass trapping for the management of this insect pest. In this study, the female sex pheromone of FAW in Vietnam was analyzed by gas chromatography-mass spectrometry (GC–MS). The virgin female’s pheromone gland extracts of FAW contained Z9-14:Ac, Z11-16:Ac, Z7-12:Ac, and Z9-12:Ac, with ratios of 87.0:12.0:0.6:0.4 (Hanoi) and 84.0:15.0:0.6:0.4 (Phutho). During the field test, the synthetic pheromone blends of three components (Z9-14:Ac, Z11-16:Ac, and Z7-12:Ac) at natural proportions of the local populations (87.3:12.0:0.7 and 84.0:15.0:1.0) and two components (Z9-14:Ac and Z7-12:Ac) (99:1) were found to be more attractive to FAW male moths. Pheromone traps with these optimal lures can be used to monitoring the population of FAW adults in maize fields. Pheromone lures and traps can be researched and developed as part of an integrated pest management for FAW in Vietnam.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"27 4","pages":"Article 102343"},"PeriodicalIF":1.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704177","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}

{"title":"Understanding life cycle and identification of larval host plant of lesser-known butterfly Truncate Imperial Cheritrella truncipennis from Sikkim Himalaya, India","authors":"Dorjee Tshering Lepcha,&nbsp;Sailendra Dewan,&nbsp;Iswar Kumar Chettri,&nbsp;Bhoj Kumar Acharya","doi":"10.1016/j.aspen.2024.102342","DOIUrl":"10.1016/j.aspen.2024.102342","url":null,"abstract":"<div><div>The North-East Himalayan region of the Indian subcontinent is enriched with high butterfly diversity. However, information on life history and larval host plants is still scanty for the majority of the butterflies in the region. Here we provide a detailed account of the life history of the lesser-known butterfly Truncate Imperial (<em>Cheritrella truncipennis</em>) from Upper-Hathidunga, Gyalshing District, Sikkim, a north-eastern state of India and part of the Himalaya biodiversity hotspot. We also provide a first account of its larval host plant <em>Smilax lanceifolia.</em> We conducted regular field visits in the study area to observe adult butterflies and locate the ovipositing sites. Subsequently, rearing of eggs and larva to their adulthood stage was conducted in the captive condition. The butterfly took 68 days to complete its entire life cycle (eggs to eclosion). The high survival rate of larvae indicates that captive breeding may be an alternative strategy for the conservation of Truncate Imperial. The study provides valuable information that may be required for detailed ecological studies and formulating regional conservation program. However, ex-situ efforts alone may not replicate the survival strategies needed in the wild (as natural habitats experiences various threats) and should only complement in-situ conservation approaches.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"27 4","pages":"Article 102342"},"PeriodicalIF":1.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704174","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}

{"title":"Nanoformulation of imidacloprid insecticide with biocompatible materials and its ecological and physiological effects on wheat green aphid, Schizaphis graminum Rondani","authors":"Roya Ahmadpour ,&nbsp;Hooshang Rafiee Dastjerdi ,&nbsp;Ali Golizadeh ,&nbsp;Aziz Habibi Yangjeh ,&nbsp;Zahra Abedi ,&nbsp;Vahid Mahdavi","doi":"10.1016/j.aspen.2024.102332","DOIUrl":"10.1016/j.aspen.2024.102332","url":null,"abstract":"<div><div>Nanoformulation of imidacloprid was prepared using the biocompatible polymer of polyethylene glycol (PEG). TEM image showed that the spherical nanoparticles were 50–150 nm. The lethal concntrationof 30 percent (LC₃₀) and 50 percent (LC₅₀) of the insecticide and its nanoformulation studied on adult female aphids were 21.46 and 58.56 mg a.i./L for pure insecticide, and 3.79 and 4.94 mg a.i./L for nanoformulated insecticide, respectively. The results of the sublethal effect test (LC₃₀) of this insecticide showed that nymphal developmental in nanoimidacloprid (5.55 days) was higher than control (4.22 days). The results showed that the insecticide treatments significantly reduced the demographic characteristics of <em>Schizaphis graminum.</em> The intrinsic rates of increase (<em>r</em>) values of aphids in control, insecticide treatment and its nanoformulation were 0.421, 0.315 and 0.29, respectively. The results of evaluating the effect of the studied insecticide on the specific activity of beta-esterase and glutathione S-transferase showed that there was no significant difference in the activity of this enzymes between the control and the insecticide treatment and its nanoformulation. Based on the obtained results, it can be concluded that after conducting additional tests, the insecticide nanoformulation can be used due to its effectiveness in lower concentrations in the management of sucking pests such as aphids.</div></div>","PeriodicalId":15094,"journal":{"name":"Journal of Asia-pacific Entomology","volume":"27 4","pages":"Article 102332"},"PeriodicalIF":1.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655928","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}