Experimental and Applied Acarology最新文献_第3页

Cell-free supernatants from entomopathogenic bacteria as a potential alternative for managing Tetranychus urticae in tomato. 昆虫病原细菌无细胞上清液作为防治番茄荨麻疹叶螨的潜在替代品。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-27 DOI: 10.1007/s10493-026-01178-z

Federico Tuninetti, Juan I Maurici, Laureano S Frizzo, Federico F Acosta, Mauro S Alisio, Eleodoro E Del Valle

{"title":"Cell-free supernatants from entomopathogenic bacteria as a potential alternative for managing Tetranychus urticae in tomato.","authors":"Federico Tuninetti, Juan I Maurici, Laureano S Frizzo, Federico F Acosta, Mauro S Alisio, Eleodoro E Del Valle","doi":"10.1007/s10493-026-01178-z","DOIUrl":"10.1007/s10493-026-01178-z","url":null,"abstract":"Tetranychus urticae is a cosmopolitan pest that causes significant yield losses in tomato crops. Entomopathogenic bacteria of the genera Photorhabdus and Xenorhabdus produce diverse secondary metabolites with acaricidal properties. This study aimed to evaluate the acaricidal and deterrent effects of cell-free supernatants (CFSs) of Photorhabdus luminescens, Xenorhabdus szentirmaii and Xenorhabdus doucetiae against T. urticae in tomato. In Petri dishes, each CFS was sprayed onto leaflets infested with females or eggs. The deterrent activity was assessed through dual-choice bioassays. Furthermore, the acaricidal effect of these bacterial metabolites was validated under field conditions over two growing seasons. After 72 h, CFSs of P. luminescens, X. szentirmaii and X. doucetiae caused mortality rates of 80.7%, 93.5% and 85.0% in laboratory bioassays, respectively. Furthermore, egg viability was significantly reduced. In choice bioassays, the Repellency, Leaf Damage and Oviposition Indices demonstrated greater pest activity on untreated plants than on those treated with bacterial compounds. In field trials, X. szentirmaii supernatant reached a 65.4% mortality rate and significantly reduced leaf damage. Secondary metabolites produced by P. luminescens, X. szentirmaii and X. doucetiae exhibited both acaricidal and deterrent activity against T. urticae, representing a promising tool for the integrated pest management in tomato production.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839595","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

Large-scale mapping of predicted tick communities (Ixodidae) identifies spatial patterns of tick assemblages. 预测蜱虫群落（伊蚊科）的大规模制图确定了蜱虫组合的空间格局。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-27 DOI: 10.1007/s10493-026-01172-5

Agustín Estrada-Peña

{"title":"Large-scale mapping of predicted tick communities (Ixodidae) identifies spatial patterns of tick assemblages.","authors":"Agustín Estrada-Peña","doi":"10.1007/s10493-026-01172-5","DOIUrl":"10.1007/s10493-026-01172-5","url":null,"abstract":"Tick-borne pathogen systems are inherently multi-species networks, yet most predictive frameworks model vector distributions independently, thereby overlooking community structure. Here, we develop a stacked approach to infer and map tick communities from species distribution models (SDMs), leveraging habitat suitability to reconstruct patterns of co-occurrence across large spatial extents. We applied this framework to eight tick species across the Iberian Peninsula using high-resolution climatic and vegetation data (1 km resolution; years 2010-2025). Species-level predictions were integrated and clustered using Gaussian Mixture Models (GMMs) to identify statistically supported communities, followed by downstream analyses of dominance and specialization. Climatic variables alone achieved high predictive performance, with limited statistical gains observed from the inclusion of vegetation descriptors. Species distributions exhibited extensive spatial overlap, revealing that most of the study area supports multi-species assemblages rather than isolated populations. Community reconstruction identified a structured gradient extending from Atlantic systems dominated by Ixodes ricinus to Mediterranean assemblages characterized by Hyalomma lusitanicum and Rhipicephalus bursa. Transitional communities formed a continuous ecological spectrum, demonstrating strong environmental filtering within Mediterranean assemblages. Our results show that SDM-derived stacked models can be leveraged to infer biologically meaningful community structures, providing a practical and scalable alternative to data-intensive joint modelling approaches. This framework offers a robust tool to integrate community ecology into tick surveillance and to improve the spatial risk assessment of tick-borne diseases.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839598","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

Biochemical and molecular basis of pyridaben resistance in Tetranychus urticae (Acari: Tetranychidae) populations from apple orchards. 苹果园荨麻疹叶螨种群抗嘧螨的生化和分子基础。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-27 DOI: 10.1007/s10493-026-01157-4

Gizem Berber-Tortop, Hilal Şule Tosun, Cengiz Ikten, Sibel Yorulmaz

{"title":"Biochemical and molecular basis of pyridaben resistance in Tetranychus urticae (Acari: Tetranychidae) populations from apple orchards.","authors":"Gizem Berber-Tortop, Hilal Şule Tosun, Cengiz Ikten, Sibel Yorulmaz","doi":"10.1007/s10493-026-01157-4","DOIUrl":"10.1007/s10493-026-01157-4","url":null,"abstract":"Tetranychus urticae, a polyphagous species, is one of the major pests of apple orchards. Although chemical control remains a preferred management strategy due to its convenience and rapid efficacy, T. urticae has developed resistance to numerous acaricides. In this study, pyridaben LC (lethal concentration) values, resistance ratios, detoxification enzyme activities, synergism tests, the H92R target-site mutation were investigated in T. urticae populations collected from apple orchards. Pyridaben susceptibility levels of T. urticae populations collected in the summer of 2023 ranged from 1.5 to 14.8 folds compared to the LC50 (LC of 50% individuals) values of the susceptible population. Synergism tests showed that PBO, a P450 inhibitor, increased pyridaben toxicity. Cytochrome P450 monooxygenase enzyme activities determined using a microplate reader varied between 0.0037 and 0.0072 mOD/min/mg protein. Among the collected populations, the H92R mutation was detected only in the GO population. In addition, 13 cycles of selection applied to a hybrid population, created by combining T. urticae populations collected in the summer of 2024, resulted in a 46-fold resistance increase, accompanied by a rise in H92R mutation frequency from 27% to fixation (100%). These findings provide important insights into the biochemical and molecular mechanisms underlying pyridaben resistance and the genetic basis of resistance evolution in T. urticae. The results contribute to the development of more sustainable and effective pest management strategies in apple orchards.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148839635","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

Analyses of the mitochondrial genomes of three Eviphididae mites reveal the phylogenetic position of Eviphididae within Gamasina. 对3种革螨的线粒体基因组分析揭示了革螨科在革螨属中的系统发育位置。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-25 DOI: 10.1007/s10493-026-01183-2

Lang Liang, Pei-Yue Zhao, Hu-Die He, Dao-Chao Jin, Tian-Ci Yi

{"title":"Analyses of the mitochondrial genomes of three Eviphididae mites reveal the phylogenetic position of Eviphididae within Gamasina.","authors":"Lang Liang, Pei-Yue Zhao, Hu-Die He, Dao-Chao Jin, Tian-Ci Yi","doi":"10.1007/s10493-026-01183-2","DOIUrl":"10.1007/s10493-026-01183-2","url":null,"abstract":"Eviphididae is a family of widely distributed predatory soil mites, notable for the complex phoretic relationships observed between some groups and dung beetles. However, despite their clear ecological and behavioral importance, Eviphididae have received minimal molecular attention, leaving their evolutionary history poorly understood. Here, we present the first study to characterize the mitochondrial genomes of Eviphididae. We assembled and annotated the mitochondrial genomes of Alliphis longicornis, Copriphis huainanensis, and Copriphis falcinellus, and subsequently characterized their genomic features in detail. All three mitogenomes possess the typical 37-gene architecture and exhibit a strong AT-bias in nucleotide composition. Analysis of the Effective Number of Codons (ENC) and related metrics indicates that codon usage patterns in three studied Eviphididae are influenced by both natural selection and random mutational pressure. Phylogenetic analyses strongly support the monophyly of Eviphididae but do not support the monophyly of Eviphidoidea. The family was recovered near the base of the Gamasina phylogeny in a clade with Stylochyrus rarior (Ologamasidae) and Parasitidae, though their precise interrelationships remain unresolved. Our findings provide novel insights into the molecular evolution of Eviphididae and lay a genomic foundation for future systematic and evolutionary studies within this enigmatic mite family.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148817860","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

Beyond phoresy: ecological patterns, effects of host attributes, and temporal variation in mites associated with Rhynchophorus palmarum L. (Coleoptera: Curculionidae). 超越寄主：生态模式，寄主属性的影响，以及与掌纹螨相关的螨的时间变化。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-24 DOI: 10.1007/s10493-026-01171-6

Maria Beatriz Nunes-Souza, Maria Eduarda Barbosa Almeida, Erika Luiza Dos Santos Torres, Hans Klompen, Manoel Guedes Correa Gondim Junior, Debora Barbosa de Lima, José Wagner Silva Melo

{"title":"Beyond phoresy: ecological patterns, effects of host attributes, and temporal variation in mites associated with Rhynchophorus palmarum L. (Coleoptera: Curculionidae).","authors":"Maria Beatriz Nunes-Souza, Maria Eduarda Barbosa Almeida, Erika Luiza Dos Santos Torres, Hans Klompen, Manoel Guedes Correa Gondim Junior, Debora Barbosa de Lima, José Wagner Silva Melo","doi":"10.1007/s10493-026-01171-6","DOIUrl":"10.1007/s10493-026-01171-6","url":null,"abstract":"Phoresy, a common dispersal strategy among arthropods, involves complex relationships between hosts and symbionts that influence ecological dynamics. Investigating the structure of phoretic mite communities and their population fluctuations is particularly relevant for widely distributed agricultural pests, such as the coconut palm weevil, Rhynchophorus palmarum. This study investigated the community of phoretic mites associated with R. palmarum in its native Neotropical range, aiming to characterize population patterns, evaluate the influence of host attributes, and analyze interspecific dynamics. A total of 14 mite taxa were recorded, all exhibiting high prevalence and strong aggregation. The mite Centrouropoda cf. brasiliana stood out as the dominant species, with individual loads exceeding 2,800 mites per beetle. Although host sex and body size did not affect total phoretic load, body size selectively influenced the abundance of certain taxa (Lasioseius sp., Macrocheles mammifer, Gamasina sp. 1, and Crenamargo binuseta). The temporal variation of C. cf. brasiliana were negatively modulated by C. binuseta and Rhynchopolipus rhynchophori, suggesting mechanisms of competitive exclusion or microhabitat partitioning. These findings highlight a complex community in which biotic interactions play a central role in structuring the phoretic acarifauna of R. palmarum, emphasizing the need for further investigations into the functional effects of these relationships.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13503439/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812293","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

Risk assessment of Panonychus ulmi to global temperate fruit production under climate change. 气候变化条件下乌爪蝇对全球温带水果生产的风险评价

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-24 DOI: 10.1007/s10493-026-01170-7

Ziang Fan, Haiyu Chi, Gengping Zhu, Yi Yan, Lixia Xie

{"title":"Risk assessment of Panonychus ulmi to global temperate fruit production under climate change.","authors":"Ziang Fan, Haiyu Chi, Gengping Zhu, Yi Yan, Lixia Xie","doi":"10.1007/s10493-026-01170-7","DOIUrl":"https://doi.org/10.1007/s10493-026-01170-7","url":null,"abstract":"Climate change is reshaping pest distributions, threatening global fruit production. We present a climate-informed risk assessment for the European red mite, Panonychus ulmi, by integrating its habitat suitability predictions with host crop distributions. Our optimized model identified the mean temperature of the coldest quarter as the primary predictor, highlighting its critical role in P. ulmi overwintering survival. We found that 72.4% of temperate fruit crops are planted in highly suitable habitats for P. ulmi. By the 2070s, this at-risk area is projected to expand to 74.8% under the SSP5-8.5 scenario. We identified pronounced regional heterogeneity: affected orchard proportions are projected to expand greatly in Argentina (from 8.3% to 41.1%) and the USA (from 54.4% to 61.3%), while remaining persistently high in the European Union (> 98%) and China (> 80%), accompanied by localized northward shifts. In contrast, we found that warming winters that disrupt diapause may reduce the suitable areas in India (from 48.5% to 36.5%). These contrasting patterns require region-specific management strategies: areas where the pest is expanding should focus on early warning and quarantine, while regions that remain highly suitable should strengthen integrated pest management to address increased generations and rising pesticide resistance.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812309","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

Mesostigmata mite assemblages in stands developed on former agricultural land. 原农用地林分中柱头螨群落发育。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-24 DOI: 10.1007/s10493-026-01174-3

Jacek Malica, Cezary K Urbanowski, Emilia Pers-Kamczyc, Szymon Nowaczyński, Jacek Kamczyc

{"title":"Mesostigmata mite assemblages in stands developed on former agricultural land.","authors":"Jacek Malica, Cezary K Urbanowski, Emilia Pers-Kamczyc, Szymon Nowaczyński, Jacek Kamczyc","doi":"10.1007/s10493-026-01174-3","DOIUrl":"10.1007/s10493-026-01174-3","url":null,"abstract":"Afforestation of post-agricultural land plays a crucial role in restoring forest soil properties and initiating secondary succession processes driven by soil biota. In this study, we compared Mesostigmata communities in even-aged (21 y./o.) stands of Alnus glutinosa, Betula pendula, Picea abies, Pinus sylvestris, and Tilia cordata established on a former agricultural lands, and adjacent fallow field as a reference habitat, located near the Żelazny Most tailings storage facility (Lubin Forest District, Poland). Soil sampling was conducted on 18 study sites (5 tree species and fallow field × 3 plots) using steel corer (0-15 cm depth), consisting of 90 samples (5 samples from each plot). In total, 592 mesostigmatid mites representing 39 taxa and 15 families were recorded. Community structure differed among habitats, with Alnus glutinosa supporting the highest abundance and diversity, while Tilia cordata exhibited the lowest values. Deciduous stands generally hosted richer and more abundant assemblages than coniferous stands and the fallow field. The occurrence of both widespread generalists and highly specialized species highlights clear habitat differentiation and varying degrees of ecological specialization, reflecting differences in soil restoration processes among tree species.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13503501/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812306","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

Biological parameters of Rhipicephalus linnaei determined using rabbits as experimental hosts under laboratory conditions. 以家兔为实验宿主，在实验室条件下测定了林奈鼻头虫的生物学参数。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-24 DOI: 10.1007/s10493-026-01175-2

Joelly Santos, Marcos Valerio Garcia, Pâmella Oliveira Duarte, Leandra Marla Oshiro, Leandro de Higa, Álvaro Aragão, Jinávila Dandara de Rocha, Jacqueline Cavalcante Barros, Renato Andreotti

{"title":"Biological parameters of Rhipicephalus linnaei determined using rabbits as experimental hosts under laboratory conditions.","authors":"Joelly Santos, Marcos Valerio Garcia, Pâmella Oliveira Duarte, Leandra Marla Oshiro, Leandro de Higa, Álvaro Aragão, Jinávila Dandara de Rocha, Jacqueline Cavalcante Barros, Renato Andreotti","doi":"10.1007/s10493-026-01175-2","DOIUrl":"10.1007/s10493-026-01175-2","url":null,"abstract":"Rhipicephalus linnaei is a tick widely associated with domestic dogs and is of recognized veterinary and public health importance. However, the recent taxonomic delimitation of this species, previously included within the Rhipicephalus sanguineus sensu lato complex, has made the production of species-specific biological data necessary. Therefore, this study aimed to characterize the life cycle parameters and reproductive performance of R. linnaei under controlled laboratory conditions. The specimens used were obtained from a laboratory colony established from engorged females collected from dogs, and artificial infestations were subsequently performed on rabbits. We evaluated the engorgement periods in larvae, nymphs, and adults; the molting period in the immature stage; and, in adult females, the body weight, preoviposition period, egg mass weight, incubation period, hatching rate, and nutritional conversion index. The results revealed significant differences among developmental stages, with an increase in the engorgement period from the larval stage to the adult stage and a longer molting period in the nymph stage. In adult females, a strong positive association was observed between body weight and egg mass weight, indicating a direct relationship between blood meal volume and reproductive investment. In addition, heavier egg masses were associated with higher hatching rates. These results provide updated information on the biology of R. linnaei and contribute to a more precise understanding of its dynamics under the currently accepted taxonomy.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13503463/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812350","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

Genotypic detection of synthetic pyrethroid and organophosphate resistance-associated mutations in Rhipicephalus (Boophilus) microplus infesting ruminants across three agro-ecological zones in Pakistan. 巴基斯坦3个农业生态区反刍动物微加鼻头虫合成拟除虫菊酯和有机磷抗性相关突变的基因型检测

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-19 DOI: 10.1007/s10493-026-01173-4

Sidra Saher, Muhammad Hassan Mushtaq, Muhammad Ijaz, Abdul Rehman

{"title":"Genotypic detection of synthetic pyrethroid and organophosphate resistance-associated mutations in Rhipicephalus (Boophilus) microplus infesting ruminants across three agro-ecological zones in Pakistan.","authors":"Sidra Saher, Muhammad Hassan Mushtaq, Muhammad Ijaz, Abdul Rehman","doi":"10.1007/s10493-026-01173-4","DOIUrl":"10.1007/s10493-026-01173-4","url":null,"abstract":"Acaricides are used to control ticks; however, their irrational use may lead to resistance, making tick control more difficult. This study aimed to determine the spatial distribution of ticks and detect genetic mutations associated with resistance to organophosphates (OPs) and synthetic pyrethroids (SPs) in Rhipicephalus (Boophilus) microplus ticks in Punjab, Pakistan. Ticks were collected from livestock farms across three agroecological zones in Punjab. They were identified morphologically and confirmed through molecular assays. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used to detect the mutation at G1120A in the acetylcholinesterase gene using the EcoRI restriction enzyme. To detect mutation at T2134A of voltage-gated sodium channel gene, allele-specific PCR was performed. A total of 1,003 ixodid ticks were collected representing seven species: Hyalomma anatolicum (457; 45.56%), R. (B.) microplus (236; 23.52%), H. excavatum (139; 13.85%), H. dromedarii (76; 7.57%), H. rufipes (49; 4.88%), R. (B.) annulatus (37; 3.68%), and R. (B.) decoloratus (9; 0.89%). Of the 236 R. (B.) microplus ticks, 70.76% (167/236) and 32.62% (77/236) exhibited resistance (AB or BB) to SPs and OPs, respectively. Among SP-resistant populations, 69.46% (116/167) were heterozygotes. Similarly, 31.16% (24/77) were heterozygotes among OP-resistant R. (B.) microplus. Resistance to OPs was significantly different among zones (p < 0.041), while a no significant difference was observed for SP resistance. This study highlights that the control of R. (B.) microplus remains challenging because of resistance-associated mutations in multiple acaricide target genes, which may compromise the efficacy of commonly used acaricides. These findings provide important evidence to support the development of targeted and evidence-based tick management strategies.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148789855","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

Estimation of economic injury levels and action thresholds for the two-spotted spider mite, Tetranychus urticae Koch, on strawberry plants. 草莓叶螨对草莓经济危害程度及作用阈值的估算。

IF 2.2 2区农林科学

Experimental and Applied Acarology Pub Date : 2026-08-19 DOI: 10.1007/s10493-026-01159-2

Eman M Abdelmaksoud, Shoukry A El-Refai, Kadry W Mahmoud, Walaa El-Sayed, Mohamed E Ragab

{"title":"Estimation of economic injury levels and action thresholds for the two-spotted spider mite, Tetranychus urticae Koch, on strawberry plants.","authors":"Eman M Abdelmaksoud, Shoukry A El-Refai, Kadry W Mahmoud, Walaa El-Sayed, Mohamed E Ragab","doi":"10.1007/s10493-026-01159-2","DOIUrl":"https://doi.org/10.1007/s10493-026-01159-2","url":null,"abstract":"Strawberry (Fragaria × ananassa Duch.) is a high-value global crop, yet its productivity is severely constrained by the two-spotted spider mite, Tetranychus urticae Koch. Developing localized economic thresholds is a cornerstone of sustainable Integrated Pest Management (IPM) to mitigate yield losses and reduce acaricide reliance. This two-season field study (2019-2020) investigated the quantitative relationship between T. urticae population density and strawberry yield in Egypt. Using varying infestation levels established via Chitosan (Top9 0.1%) treatments, linear regression and Chi-square (χ2) analyses were employed to determine four critical economic levels: General Equilibrium Position (GEP), Economic Threshold Level (ETL), Economic Injury Level (EIL), and Economic Damage Level (EDL). Results revealed a highly significant negative correlation between mite density and yield (r = -0.96*** in 2019; r = -0.97*** in 2020), with an average yield reduction of 1.25% per mite. The estimated EIL and ETL were 4.0 mites/leaf in 2019 and 3.4 mites/leaf in 2020. These findings provide a precise decision-making framework for mite management in Mediterranean strawberry production. The low estimated thresholds suggest that proactive, preventive management strategies are more effective than reactive control to maintain strawberry yield.","PeriodicalId":12088,"journal":{"name":"Experimental and Applied Acarology","volume":"97 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13490235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148789906","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