Environmental Entomology最新文献

Risk of select parasiticides diflubenzuron, eprinomectin, and fenbendazole to dung-associated beetles. 选择杀寄生虫剂氟虫脲、依普诺菌素和芬苯达唑对粪相关甲虫的风险。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-13 DOI: 10.1093/ee/nvaf074

Haylie J Brown, Joseph H Lynch, Teiya Kijimoto, Kevin Shaffer, Elizabeth Rowen

{"title":"Risk of select parasiticides diflubenzuron, eprinomectin, and fenbendazole to dung-associated beetles.","authors":"Haylie J Brown, Joseph H Lynch, Teiya Kijimoto, Kevin Shaffer, Elizabeth Rowen","doi":"10.1093/ee/nvaf074","DOIUrl":"https://doi.org/10.1093/ee/nvaf074","url":null,"abstract":"Dung-associated beetles provide crucial ecosystem services including reducing pasture fouling and contributing to animal and pasture health. However, parasiticides used on cattle can negatively impact beetles. We assessed the exposure and impact of Clarifly (active ingredient [a.i.] diflubenzuron), LongRange (a.i. eprinomectin), and Safe-guard (a.i. fenbendazole) on beetles and flies. Using high-performance liquid chromatography, we quantified the residual concentrations of these chemicals in cattle feces for 150 d. We found fenbendazole excreted within the first 3 d after treatment, while diflubenzuron and eprinomectin persisted for 8 to 12 wk. To estimate the concentrations of these active ingredients that are toxic to beetles, we dosed cattle dung with diflubenzuron, eprinomectin, or fenbendazole, allowed insects to colonize in the field, and monitored the emergence of beetles. Dung beetle (Scarabaeidae) abundance was negatively impacted by diflubenzuron and eprinomectin while fenbendazole had no negative effects. Predatory beetles, families Carabidae, Histeridae, Hydrophilidae, and Staphylinidae, were unaffected by all chemicals. We found that dung from animals treated with LongRange was toxic to Scarabaeidae for 30 to 90 d after treatment. Similarly, diflubenzuron was toxic to Scarabaeidae when cattle consistently consumed it, although concentration of diflubenzuron in dung varied when cattle were fed using Clarifly. In contrast, the active ingredient in Safe-guard, fenbendazole, was not toxic at 10 mg/kg. Although, we found this product excreted at higher concentrations for 1 d after treatment, it likely poses little risk. Our results suggest that producers who value beneficial beetles as a management goal should avoid eprinomectin and diflubenzuron products that excrete for long periods.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144616875","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}

引用次数: 0

Coincident shifts in riparian ground-active arthropod diversity and soil nutrients under an introduced symbiotic N2-fixing tree. 引进共生固氮树下河岸地面活动节肢动物多样性与土壤养分的同步变化

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-13 DOI: 10.1093/ee/nvaf025

Benjamin D Duval, Evangelina Carabotta, Sergio de Tomas-Marin, David C Lightfoot

{"title":"Coincident shifts in riparian ground-active arthropod diversity and soil nutrients under an introduced symbiotic N2-fixing tree.","authors":"Benjamin D Duval, Evangelina Carabotta, Sergio de Tomas-Marin, David C Lightfoot","doi":"10.1093/ee/nvaf025","DOIUrl":"https://doi.org/10.1093/ee/nvaf025","url":null,"abstract":"Symbiotic nitrogen-fixing plants such as Russian olive can significantly impact soil chemistry and invertebrate biodiversity in riparian ecosystems. Here, the effects of Russian olive on soil chemical properties and invertebrate communities in riparian zones of the southwestern United States were investigated. Russian olive stands were compared to native cottonwood stands and restoration sites by analyzing soil nitrogen (N), phosphorus (P), and moisture levels, and arthropod diversity and abundance. Sites where Russian olive is present led to a net increase in soil nitrogen, a decrease in soil phosphorus, and greater soil moisture compared to both native cottonwood stands and restoration sites. Native cottonwood stands showed lower soil N and higher P levels, as well as higher arthropod diversity. This increased diversity could be linked to the soil's nutrient stoichiometry, as there is a negative correlation between taxonomic diversity and the soil N:P ratio. Moreover, there was a greater abundance of detritivorous arthropods in Russian olive stands compared to native vegetation. Soil nitrate (NO3-) levels showed a strong positive correlation with detritivorous arthropod abundance (r2 = 0.98), but only a moderate correlation with herbivores (r2 = 0.38), and NO3- was unrelated to predator abundance (r2 = 0.01). These results suggest that Russian olive stands can alter soil chemistry in ways that disproportionately benefit detritivores, potentially disrupting the balance of arthropod communities and reducing overall biodiversity in riparian ecosystems. The study underscores the need for careful management of invasive, symbiotic N2-fixing plant species to preserve the ecological integrity of riparian habitats.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625617","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}

引用次数: 0

Exploring dynamics of nature's raincoat: comparing how nano-scale silk fibers produced by dryland and tropical species of webspinning insects interact with water. 探索大自然雨衣的动力学：比较由旱地和热带织网昆虫产生的纳米级丝纤维如何与水相互作用。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-12 DOI: 10.1093/ee/nvaf071

Richard P Barber, Emily A Arias, Andrew M Schatz, Aidan Kaneski, Janice S Edgerly

{"title":"Exploring dynamics of nature's raincoat: comparing how nano-scale silk fibers produced by dryland and tropical species of webspinning insects interact with water.","authors":"Richard P Barber, Emily A Arias, Andrew M Schatz, Aidan Kaneski, Janice S Edgerly","doi":"10.1093/ee/nvaf071","DOIUrl":"https://doi.org/10.1093/ee/nvaf071","url":null,"abstract":"Embiopterans are reliant on silk for protection and produce the finest silk fibers known in nature. This report compares silk-water interactions for four species representing two different lifestyles: two tropical arboreal species that feed on lichens on bark and two detritivores from arid regions that typically live in leaf litter and underground. Water droplets placed on spun silk transformed the fibrous top layer to a film. Arboreal embiopterans spun a denser silk covering than did the detritivores. The films that formed after exposure to water were also denser for the arboreal species. A possible underlying cause for the difference between the two lifestyles is because detritivores stitch together dried leaves and other detritus to create cover, they may rely more on substrate than on silk alone for protection. In contrast, arboreal embiopterans exposed on the surface of bark rely on thick silk coverings. Contact angles of water droplets on silk revealed that the silks tended to be more hydrophilic than a hydrophobic control, perhaps explaining why silks exposed to water become transformed by water-protein interactions. Results suggest that interesting variability in silk-water interactions exists for this little-known group insects, that also produce silk proteins of high crystallinity and with variable amino acids, one species to the next.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144616874","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}

引用次数: 0

Seasonal phenology of Empoasca fabae (Hemiptera: Cicadellidae) in Québec, Canada. 加拿大魁省蚕豆蝇的季节物候特征（半翅目：蚕豆蝇科）。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-11 DOI: 10.1093/ee/nvaf070

Abraão Almeida Santos, Fausto Henrique Vieira Araújo, Nicolas Plante, Ricardo Siqueira da Silva, Edel Pérez-Lopéz

{"title":"Seasonal phenology of Empoasca fabae (Hemiptera: Cicadellidae) in Québec, Canada.","authors":"Abraão Almeida Santos, Fausto Henrique Vieira Araújo, Nicolas Plante, Ricardo Siqueira da Silva, Edel Pérez-Lopéz","doi":"10.1093/ee/nvaf070","DOIUrl":"https://doi.org/10.1093/ee/nvaf070","url":null,"abstract":"Climate change is reshaping insect population dynamics in North America, notably impacting the migratory pest Empoasca fabae (Harris) (Hemiptera: Cicadellidae). While its phenology is well studied in the United States, knowledge gaps exist regarding its dynamics in Eastern Canada, one of its northernmost migration areas. Our study integrates degree-day models, CLIMEX ecological niche modeling, and field-collected data from Québec to assess E. fabae seasonal phenology and monthly climatic suitability. Our results indicate that E. fabae completes one to two generations in Québec, with earlier emergence and higher generational potential in warmer southeastern regions compared to cooler northeastern regions. CLIMEX modeling showed that suitable climatic conditions for E. fabae growth begin in April, peak from May to September, and decline by November. First adult captures occurred from late May to early June, with population peaks in June-July and a decrease by September. Observed adult peaks occurred earlier than predicted by degree-day models, suggesting that additional environmental factors, such as wind patterns and host plant availability, influence early-season population dynamics. This study provides a comprehensive understanding of E. fabae phenology in Québec and highlights the importance of incorporating regional climate to predict population trends. Further research on diapause onset, late-season persistence, and migration patterns is needed to refine predictive models and inform pest management strategies in Québec. Understanding these factors will be essential in mitigating potential economic impacts amid ongoing climate change.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144607775","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}

引用次数: 0

Chilli thrips oviposition behavior: a comparative study among strawberry cultivars. 草莓品种辣椒蓟马产卵行为的比较研究。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-10 DOI: 10.1093/ee/nvaf073

Lovely Adhikary, Hugh A Smith, Vance M Whitaker, Sriyanka Lahiri

{"title":"Chilli thrips oviposition behavior: a comparative study among strawberry cultivars.","authors":"Lovely Adhikary, Hugh A Smith, Vance M Whitaker, Sriyanka Lahiri","doi":"10.1093/ee/nvaf073","DOIUrl":"https://doi.org/10.1093/ee/nvaf073","url":null,"abstract":"Florida is the second-highest producer of strawberries in the USA. Chilli thrips Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) have become a major pest in Florida strawberries following its establishment in the USA after 2005. Insecticide application is the leading management approach for S. dorsalis. However, this pest demonstrated the tendency to develop resistance to a broad range of active ingredients. Host-plant resistance (HPR) may contribute to the management of this pest, yet mechanisms of HPR, including antixenosis and antibiosis against S. dorsalis in strawberries, are not well studied. Therefore, this study aimed to evaluate the preference of S. dorsalis to select strawberry cultivars as oviposition sites that resulted in a successful egg eclosion. Seven commercial strawberry cultivars namely, \"Florida Brilliance,\" Florida Medallion \"FL 16.30-128,\" Sweet Sensation \"Florida 127,\" Florida Pearl \"FL 16.78-109,\" \"Strawberry Festival,\" \"Florida Beauty,\" and \"Florida Radiance\" were evaluated as hosts in an oviposition choice test. Greenhouse potted strawberry plants were infested with 1- to 3-d-old adult S. dorsalis females. The cultivars used as treatment were replicated five times, and the study was repeated twice. Among the seven cultivars, Florida Pearl \"FL 16.78-109,\" \"Florida Beauty,\" and \"Strawberry Festival\" had a higher number of eggs in the leaf tissue compared with other tested cultivars. However, the egg hatching percentage did not demonstrate a specific trend. The results showed that S. dorsalis has a strong oviposition preference for certain strawberry cultivars over others, and this information may be incorporated into HPR for managing S. dorsalis in strawberries.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144599748","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}

引用次数: 0

Multiple infestation of a grain mass by Sitophilus oryzae L. (Coleoptera: Curculionidae) and the fungus, Aspergillus flavus, optimizes abiotic conditions for improved insect fitness. 稻谷象菌（鞘翅目：曲霉科）和真菌黄曲霉对籽粒的多次侵染优化了非生物条件，提高了昆虫的适应性。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-09 DOI: 10.1093/ee/nvaf067

Marco A Ponce, Tania N Kim, William R Morrison

{"title":"Multiple infestation of a grain mass by Sitophilus oryzae L. (Coleoptera: Curculionidae) and the fungus, Aspergillus flavus, optimizes abiotic conditions for improved insect fitness.","authors":"Marco A Ponce, Tania N Kim, William R Morrison","doi":"10.1093/ee/nvaf067","DOIUrl":"https://doi.org/10.1093/ee/nvaf067","url":null,"abstract":"Understanding the combined contribution of insects and microbes to conditions in a grain mass is particularly relevant for pest management programs in bulk storage. There are important and strong interactions between Sitophilus oryzae (L.) and stored product fungi, especially Aspergillus flavus Link. The aims of this study were to determine how the introduction of S. oryzae, A. flavus, or both in a grain mass affected (i) the fitness of S. oryzae, and (ii) the abiotic conditions in a grain mass. Containers with 300 g of wheat were established with no insects or added microbes, 75 mixed-sex S. oryzae adults only, 11.6 g of A. flavus-inoculated grain only, or both, and dataloggers were placed in the masses to record temperature and relative humidity every 5 min. After 60 d, progeny were counted, and grain moisture was also measured. Although mean temperature was not consistently altered in the presence of A. flavus or S. oryzae, the combined inoculation of A. flavus and S. oryzae in a grain mass consistently elevated relative humidity by 7% to 8%. The presence of A. flavus or S. oryzae consistently elevated grain moisture from 10.8% prior to the experiment to about 13%. Importantly, there were 203-fold more F1 progeny produced by S. oryzae when A. flavus was present compared to when it was absent in a grain mass, possibly indicating a mutualistic relationship. Our work adds to the growing body of literature suggesting that insects and microbes should be managed in concert at food facilities.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144590742","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}

引用次数: 0

Parasitoid tachinid fly, Celatoria setosa, reduces performance, oviposition, and pheromone emission in herbivore pest, Acalymma vittatum. 拟寄生物速蝇（Celatoria setosa）降低草食性害虫白蚁（Acalymma vitatum）的性能、产卵和信息素释放。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-09 DOI: 10.1093/ee/nvaf069

Matthew R Barrett, Kobe Phillips, Christophe Duplais, Jennifer S Thaler

{"title":"Parasitoid tachinid fly, Celatoria setosa, reduces performance, oviposition, and pheromone emission in herbivore pest, Acalymma vittatum.","authors":"Matthew R Barrett, Kobe Phillips, Christophe Duplais, Jennifer S Thaler","doi":"10.1093/ee/nvaf069","DOIUrl":"https://doi.org/10.1093/ee/nvaf069","url":null,"abstract":"Interactions between parasitoids and herbivore hosts are complex as parasitism affects multiple components of host behavior and fitness through both consumptive and non-consumptive effects. Understanding how these multiple effects unfold is especially important in applied systems where parasitoids play a role in biological control. In lab-based experiments, we manipulated parasitism in striped cucumber beetles, Acalymma vittatum (Coleoptera: Chrysomelidae), a major pest of cucurbits in North America, using Celatoria setosa (Diptera: Tachinidae) to assess how parasitism affected multiple components of male and female fitness, including survival, herbivory, oviposition, and reproductive signaling through the emission of vittatalactone, a male-specific aggregation pheromone. In follow-up experiments, we investigated the potential non-consumptive effects of parasitoids on these metrics by exposing beetles to arenas with or without parasitoids. Parasitized female beetles experienced a 4-fold increase in mortality, consumed 49.6% less leaf tissue, and were less likely to oviposit eggs compared to non-parasitized control females. In addition, parasitized males in small groups emitted 52.5% less vittatalactone than non-parasitized control males. Lastly, we found some evidence of non-consumptive effects of parasitoids in which individual females and groups of males, exposure to parasitoids resulted in reduced foliar damage. Our findings highlight broad effects of tachinid parasitoids in a common pest and point to multiple mechanisms for reduced pest performance.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144590743","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}

引用次数: 0

Effects of insect longevity and drought conditions on aster leafhopper (Hemiptera: Cicadellidae) fecundity. 昆虫寿命和干旱条件对紫菀叶蝉繁殖力的影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-07-02 DOI: 10.1093/ee/nvaf068

Berenice Romero, Lawrence Entz, Christopher M Wallis, Sean M Prager

{"title":"Effects of insect longevity and drought conditions on aster leafhopper (Hemiptera: Cicadellidae) fecundity.","authors":"Berenice Romero, Lawrence Entz, Christopher M Wallis, Sean M Prager","doi":"10.1093/ee/nvaf068","DOIUrl":"https://doi.org/10.1093/ee/nvaf068","url":null,"abstract":"Insect population dynamics profoundly affect the potential for a species to serve as a pest, highlighting the importance of proper quantification and monitoring of insect reproduction. Important measurements of reproduction include individual female egg load and realized fecundity, which can be affected by insect longevity and host quality. Aster leafhoppers (Macrosteles quadrilineatus Forbes) are an important pest in Western Canada and the upper Midwest of the United States, yet little is known about factors influencing their fecundity, and thus, population dynamics. To evaluate age-specific changes in fecundity, newly emerged pairs of aster leafhoppers were caged onto plants, and egg and nymph numbers were determined on a weekly basis until females died. Moreover, water deficit can affect amino acid concentrations in phloem sap, and in turn, affect plant attractiveness and suitability for insect herbivores. To examine the relationship between water deficit and reproductive potential, aster leafhoppers were reared on unstressed and water-stressed barley plants until adult emergence. Pairs with all possible combinations of leafhoppers from each water stress condition were made and allowed to reproduce. Amino acid concentrations were quantified in unstressed and water-stressed barley plants. Aster leafhoppers produced eggs throughout their adult stage, with numbers decreasing as individuals got older. Females reared on water-stressed plants had fewer eggs following adult emergence. Following mating, females that had been reared on unstressed plants had a similar egg load to those that had been reared on water-stressed plants. Unstressed plants had a higher concentration of aspartic acid and a lower concentration of tryptophan.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144552673","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}

引用次数: 0

Diversity of grasshoppers in different grassland types in the Western Tianshan Mountains of China and influencing factors. 西天山不同草地类型蚱蜢多样性及其影响因素

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-27 DOI: 10.1093/ee/nvaf065

Mengjia Wang, Xingmin Song, Chuanen Li, Roman Jashenko, Zhujun Cao, Huixia Liu, Jun Lin, Rong Ji

{"title":"Diversity of grasshoppers in different grassland types in the Western Tianshan Mountains of China and influencing factors.","authors":"Mengjia Wang, Xingmin Song, Chuanen Li, Roman Jashenko, Zhujun Cao, Huixia Liu, Jun Lin, Rong Ji","doi":"10.1093/ee/nvaf065","DOIUrl":"https://doi.org/10.1093/ee/nvaf065","url":null,"abstract":"Grasshoppers, as important primary consumers in grasslands, play a crucial role in maintaining the balance of grassland ecosystems. However, patterns of change in grasshopper diversity and their influencing factors vary with regions and grassland types. Therefore, we selected the Western Tianshan Mountains in China as a representative study area to investigate grasshoppers in different grassland types. The results showed significant differences in the mean values of the Shannon index, Simpson index, and Pielou index of grasshoppers among the six grassland types at the plot level. In temperate deserts and temperate desert steppes at low altitudes (Alt), the Shannon index and Simpson index of grasshoppers were relatively high. In mountain meadows and temperate meadow steppes at high Alt, the Pielou index was relatively high. Alt drove differences in temperature and vegetation, which had a significant impact on the diversity of grasshoppers in different grassland types. The diversity in temperate deserts and temperate desert steppes was positively correlated with temperature, while the diversity in mountain meadows and temperate meadow steppes was negatively correlated with temperature. Furthermore, grasshopper diversity exhibited a significant positive correlation with vegetation density in temperate steppes and temperate meadow steppes. When managing different grassland types, maintaining vegetation diversity helps buffer the risk of grasshopper outbreaks and address the impact of global warming on grasshopper occurrence in response to the emergence of new potential suitable habitats.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505161","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}

引用次数: 0

Differential susceptibility of local and introduced chestnuts to a chestnut weevil Curculio davidi (Coleoptera: Curculionidae) in the Qinling Mountains. 秦岭地方栗子和引种栗子对栗子象鼻虫Curculio davidi的敏感性差异。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-26 DOI: 10.1093/ee/nvaf056

Kailang Yang, Hong Hu, Ziyang Hao, Hong He

{"title":"Differential susceptibility of local and introduced chestnuts to a chestnut weevil Curculio davidi (Coleoptera: Curculionidae) in the Qinling Mountains.","authors":"Kailang Yang, Hong Hu, Ziyang Hao, Hong He","doi":"10.1093/ee/nvaf056","DOIUrl":"https://doi.org/10.1093/ee/nvaf056","url":null,"abstract":"The chestnut weevil, Curculio davidi Fairmaire (Coleoptera: Curculionidae) is a major pest of chestnuts. Damage caused by C. davidi has increased as beetle populations have expanded. To promote effective C. davidi management practices based on its host plant, we compared the susceptibility of local chestnut cultivar 'Qinli 2'(QL2) and introduced chestnut cultivar 'Hongli' (HL) in Qinling Mountains to this weevil. Number of eggs laid by C. davidi females in HL was significantly higher than that of QL2. Chestnut weevil females laid 6.25-fold and 3-fold more eggs in HL than QL2 in the choice tests and no-choice tests, respectively. From 2021 to 2023, C. davidi infestation rates of HL were significantly higher than that of QL2 in the field. HL was smaller, softer, and have lower cellulose content as compared with QL2. HL contained 4.61%, 13.76%, 10.09%, 26.53%, 9.24%, 18.4%, 6.28%, and 23.26% higher amounts of N, K, Ca, Mg, S, Na, Mn, and Cu respectively, than QL2. In contrast, QL2 contained 25.28%, 19.80%, and 16.83% higher amounts of Al, B, and Fe, than HL. Our results revealed that the introduced chestnut cultivar is more susceptible to C. davidi compared to the local chestnut cultivar in Qinling Mountain, which was associated with several physico-chemical changes in chestnuts. These findings may contribute to the future efforts for breeding of C. davidi-resistant chestnut cultivars.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505160","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}

引用次数: 0