Environmental Entomology最新文献

{"title":"Development of a test design for a semi-field, colony-feeding study for the common eastern bumble bee (Hymenoptera: Apidae).","authors":"Ana R Cabrera, John Hanzas, Pamela Jensen, Dwayne R J Moore, Daniel R Schmehl","doi":"10.1093/ee/nvaf020","DOIUrl":"10.1093/ee/nvaf020","url":null,"abstract":"<p><p>Ecological risk assessment is a key component of the regulatory process required for registration of crop protection products around the world. The western honey bee (Apis mellifera) is the model organism for pesticide risk assessments for bees, but there are uncertainties over whether it is predictive of risks to other bees. Consequently, efforts are underway to develop test methodologies for other non-Apis bees. We conducted a semi-field colony-feeding study with Bombus impatiens colonies to develop a colony-level methodology for bumble bees. We exposed commercially available bumble bee colonies to diets consisting of 4 concentration treatments of dimethoate insecticide (0.05, 0.19, 0.75, and 3.0 mg a.i./L) via supplemental sugar solution for 6 wk and compared exposed colonies to untreated controls. Each treatment group had 10 replicate colonies, with 1 replicate per treatment group represented at each of the 10 study rural locations. We collected data on various colony-level endpoints including production of female reproductive (gyne) offspring, colony weight, foraging activity, and consumption of provisioned sugar solution. Our results indicated that the test design could be used to derive concentration-response relationships for several endpoints including the most sensitive, colony mass (No Observed Adverse Effect Concentration = 0.05 mg a.i./L). Overall, our study provides the foundation for a semi-field, colony-feeding study test design for bumble bees, thus adding to the growing body of studies that may be used to assess the protectiveness of the honey bee risk assessment framework for non-Apis bees exposed to pesticides.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"544-552"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12199248/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998283","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":"Community composition and abundance of wild bees at row crop-grassland interfaces in west central Nebraska.","authors":"Araceli Gomez Villegas, Hannah E Stowe, Abigail Lyons, Rachele Dailey, Julie A Peterson, Autumn Smart","doi":"10.1093/ee/nvaf040","DOIUrl":"10.1093/ee/nvaf040","url":null,"abstract":"<p><p>Perennial mixed forb and grassland habitats are crucial to conservation of pollinators and connectivity of habitats in intensely farmed landscapes. This study aims to understand the effects of land use on the pollinator community by describing bee abundance, species richness and community composition in perennial conservation grasslands and adjacent annual row crops located in west central Nebraska. In 2022 and 2023, we collected and identified bees via sticky traps at 4 locations (center and edge of adjacent grasslands and crop fields) at 6 replicated sites. We collected 1,768 specimens from sticky traps, resulting in 70 species within 28 genera. Halictidae accounted for 84% of the specimens collected. Bee abundance was influenced by the simple effects of land use (grassland vs. crops), edge adjacency, and the month and year of collection. Differences in bee abundance within a collection date were found mostly in early 2022 (May and June) and late 2023 (September), when the crop center location was generally the lowest, with some evidence for spillover of bees from the grassland into the crop edge during the early summer months. Bee species richness was affected only by month and was not significantly different by land use and edge adjacency. Bee community composition overlapped across the 4 locations, although there were significant dissimilarities between crop fields and grasslands. Surveys of the plant community revealed very low abundance of blooming stems and plant taxonomic richness at crop locations for all sampling periods, while grassland locations were comparatively high and varied over time. Plant communities showed no overlap between crop field and grassland locations. Overall, we found that conservation grasslands, while not seeded specifically with pollinator-attractive forbs, provide diverse resources to support wild bee communities in west central Nebraska; crop edges may also provide non-plant resources such as nesting sites and irrigation water. Going forward, better understanding pollinator species composition and resource utilization relative to land use characteristics and drought conditions will allow for better tailoring of conservation efforts and management strategies in Nebraska and across the larger region.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"632-643"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12199155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143997594","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":"Thermal biology of Hypogeococcus pungens (Hemiptera: Pseudococcidae) explains its variable performance as a classical biological control agent for Harrisia martinii (Cactaceae) in Australia.","authors":"Angela E Ezeh, Myron P Zalucki, Michael D Day, Tamara Taylor, Michael J Furlong","doi":"10.1093/ee/nvaf026","DOIUrl":"10.1093/ee/nvaf026","url":null,"abstract":"<p><p>The mealybug, Hypogeococcus pungens Granara de Willink (Hemiptera: Pseudococcidae), was released in Australia as a biological control agent for Harrisia martinii (Labour.) Britton (Cactaceae) in 1975. Although the mealybug successfully established in all released locations, its impact has been variable among regions, possibly as a result of climatic differences. Life-history traits (settling time, survival, development time, female reproduction, adult longevity) were compared at 6 constant temperatures (15 to 40 °C) in the laboratory. The mealybug settled on H. martinii at all temperatures tested, but at 15 °C and 40 °C, insects failed to develop and died. Temperature affected female size, fecundity, and integrated performance, all of which were highest at 25 °C. A linear model that fitted temperature to development time indicated a lower developmental threshold of 14.5 °C for both male and female mealybugs. CLIMEX models were developed for the mealybug and its host, H. martinii, and used to investigate the suitability of different regions of Australia, where H. martinii occurs for Hy. pungens. The Hy. pungens CLIMEX model suggests that cold stress limits mealybug growth in southern Queensland and that mealybug performance will vary between regions based on local temperatures. Locations with extreme low winter and extreme high summer temperatures are likely to have the most constrained populations. This may account for the observed differences in the effectiveness of Hy. pungens as a biological control agent at locations within the established range of H. martini in Australia.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"454-466"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12199162/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957171","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":"A possibility of premating isolation mediated by female sex pheromones between the two subspecies of Hierodula patellifera distributed in Japan.","authors":"Soshi Ayano, Kazuyuki Oshima, Kazuhisa Yamasaki, Hideshi Naka","doi":"10.1093/ee/nvaf062","DOIUrl":"https://doi.org/10.1093/ee/nvaf062","url":null,"abstract":"<p><p>Hierodula patellifera is the only widely distributed species in the genus Hierodula. The nominotypical subspecies ssp. patellifera is broadly distributed, while ssp. daitoana, an endemic subspecies, is found only on the Daito Islands, a group of oceanic islands 360 km from Okinawa, Japan. When H. patellifera males detect the sex pheromone released by females, they shake their bodies quickly (juddering movement). This behavior was observed in the males of both subspecies of H. patellifera. When the males of each subspecies were given volatiles from consubspecific or allosubspecific females that showed calling behavior, males of both subspecies showed the juddering movement only in response to volatiles from consubspecific females. This suggests that premating isolation mediated by sex pheromones has evolved between the two subspecies. However, as the two subspecies are allopatrically distributed, the differences in sex pheromone components do not appear to be the result of reproductive isolation driven by subspecies interaction.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505157","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":"Ethanol: dose-dependent flight responses of bark and woodboring beetles, and associated species of Coleoptera.","authors":"Daniel R Miller","doi":"10.1093/ee/nvaf032","DOIUrl":"10.1093/ee/nvaf032","url":null,"abstract":"<p><p>In 2007 to 2008, I assessed the effects of ethanol release rate (dose) on trap catches of bark and woodboring beetles, and associated species of predators, in 6 experiments in north-central Georgia. Multiple-funnel traps were baited with ethanol alone or co-baited with α-pinene (with or without the bark beetle pheromones ipsenol and ipsdienol). The following species of bark and ambrosia beetles exhibited a positive dose-dependent response to ethanol, regardless of co-baits: Corthylus columbianus Hopkins, Dryoxylon onoharaense (Murayama), Hylastes porculus Erichson, Hylastes salebrosus Eichhoff, Hylobius pales (Herbst), Monarthrum fasciatum (Say), Orthotomicus caelatus (Eichhoff), Xyleborinus saxesenii (Ratzeburg), Xyleborus species, and Xylosandrus crassiusculus (Motschulsky) (Coleoptera: Curculionidae). Hylastes tenuis Eichhoff (Coleoptera: Curculionidae) exhibited a positive dose-dependent response to ethanol alone but not when traps were co-baited with α-pinene, or α-pinene and bark beetle pheromones. A consistent negative dose-dependent response was exhibited by Ips grandicollis (Eichhoff) whereas results with Ips avulsus (Eichhoff) and Dendroctonus terebrans (Olivier) (Coleoptera: Curculionidae) were variable. Longhorn beetles were unaffected by ethanol dose except for Curius dentatus Newman (Coleoptera: Cerambycidae), which exhibited a positive dose-dependent response to ethanol. Three species of predators exhibited positive dose-dependent responses to ethanol: Temnoscheila virescens (F.) (Coleoptera: Trogossitidae), Platysoma parallelum (Say) (Coleoptera: Histeridae), and Lasconotus species (Coleoptera: Zopheridae). Ethanol is a key kairomone for many species of bark and woodboring beetles.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"467-479"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996263","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":"The role of canopy structure on the diversity and function of arthropods in coffee agroscapes of the Northern Andes.","authors":"Jonathan Igua-Muñoz, Carolina Ramos, Fredy Alvarado","doi":"10.1093/ee/nvaf038","DOIUrl":"10.1093/ee/nvaf038","url":null,"abstract":"<p><p>Increasing sustainable productive activities to provide food, fiber, and energy is a global necessity for an increasingly populated planet. However, managing productive landscapes requires integrative approaches in which changes in diversity, microhabitat effects and managing conditions are assessed. We analyzed patterns of arthropod diversity, composition, and functional guilds in response to changes in canopy structure (solar radiation, geometry, and openness) in sun and shade coffee plantations in a coffee-producing landscapes of the northern Andes. We found that the response of the arthropod community varied according to the variables analyzed. On the one hand, we found that sun coffee plantations have higher arthropod richness and diversity. However, shaded coffee plantations show higher abundance and biomass values. Similarly, when the arthropod community was separated by functional guilds, a positive effect of solar radiation was observed in shade coffee plantations. Our results suggest that sun coffee plantations are not necessarily an inhospitable environment for arthropod diversity but may be so in terms of ecosystem functions. We conclude that a wider range of variables should be included to get a clearer picture of which productive landscape designs may be best for conserving arthropod biodiversity and ecosystem functions in productive landscapes.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"514-522"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998284","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":"Dung beetle species assemblages in cattle pastures of Vermont and New York State.","authors":"Bryony Sands, Lauren Giroux, John Bruce","doi":"10.1093/ee/nvaf042","DOIUrl":"10.1093/ee/nvaf042","url":null,"abstract":"<p><p>Dung beetles provide key ecosystem services in pasture environments. In the Northeastern U.S., dairy is the largest agricultural sector and grass-based dairy production is increasing. Despite the importance of dung beetles as beneficial pasture insects, the consequences of changes in pasture habitat with more cattle out on pasture are not well understood, nor is dung beetle species composition known for several states in Northeastern U.S. The aims of this study were to investigate dung beetle diversity and community structure on dairy pastures across Vermont and North Country, New York, and identify relevant livestock management factors that influence these dynamics. Dung baited pitfall trapping and soil health analysis were conducted on 29 grazing dairy farms using different grazing strategies and parasite management. The results reveal an abundant and diverse dung beetle community; however, the population was dominated by individuals of introduced species of European origin, particularly Colobopterus erraticus (Linnaeus, 1758; Coleoptera; Scarabaeidae) which comprised 74% of beetles collected. Native dung beetle species abundance was lower in the Northeast Kingdom of VT. Species assemblage structure differed between management practices related to parasiticide use and grazing. The soil health outcomes bulk density (0 to 50 mm), total carbon, and total nitrogen were correlated with dung beetle biodiversity indices and grazing management. The results indicate that livestock management may influence dung beetle species assemblages and strategies to support biodiversity may support soil health and nutrient cycling in the Northeast.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"532-543"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144062434","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":"Transcriptome analysis and temporal expression patterns of wing development-related genes in Lymantria dispar (Lepidoptera: Erebidae).","authors":"Fengrui Dou, Wenzhuai Ji, Qing Xie, Jingyu Wang, Yixia Cao, Juan Shi","doi":"10.1093/ee/nvae111","DOIUrl":"10.1093/ee/nvae111","url":null,"abstract":"<p><p>Spongy moth, Lymantria dispar Linnaeus (Lepidoptera: Erebidae), stands as a pervasive international threat, marked by its designation as one of the \"world's 100 worst invasive species\" by IUCN, owing to its voracious leaf-eating habits encompassing over 500 plant species. Its strong flight ability facilitates its spread and invasion. The present study aims to uncover differential gene expression, utilizing the Illumina Novaseq6000 sequencing platform for comprehensive transcriptome sequencing and bioinformatic analysis of total RNA extracted from larvae and pupae. Results revealed pivotal processes of protein functional structure conformation, transport, and signal transduction in functional gene annotation during the 2 developmental stages of spongy moth. 18 functional genes, namely, Distal-less (Dll), Wingless (Wg), Decapentaplegic (Dpp), Hedgehog (Hh), Cubitus interruptus (Ci), Patched (Ptc), Apterous (Ap), Serrate (Ser), Fringe (Fng), Achaete (Ac), Engrailed (En), Vestigial (Vg), Scute (Sc), Invected (Inv), Scalloped (Sd), Ultrabithorax (Ubx), Serum Response Factor (SRF), and Spalt-major, associated with wing development were identified, and their expression levels were meticulously assessed through real-time quantitative PCR (RT-qPCR) in 1st-6th instar larvae and male and female pupae wing discs. The results showed that 18 genes exhibited expression. Furthermore, the relative expression values of wing development-related genes were significantly higher in the pupae stage than in the larval stage. The relative expression values of male and female pupae were also significantly different. The RT-qPCR results were in general agreement with the results of transcriptome analysis. This study establishes a foundational understanding of the developmental mechanisms governing the formation of spongy moth wings.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"654-667"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143763177","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":"Temperature, density, and phenotypic plasticity of melanism in Callosobruchus maculatus (Coleoptera: Chrysomelidae).","authors":"Andrew M Stoehr, Liam R Donahue","doi":"10.1093/ee/nvaf034","DOIUrl":"10.1093/ee/nvaf034","url":null,"abstract":"<p><p>Variation in dark coloration due to melanin, i.e., melanism, in insects is often phenotypically plastic and adaptive. However, the pigment melanin and/or components of the melanin synthesis pathway, have many functions in insects beyond just coloration, such as roles in immune defense and cuticular hardening. For these reasons, melanism responses may sometimes be complicated, particularly if melanin-based coloration trades off with other melanin-based functions; such trade-offs may be related to resource availability. We manipulated the temperature and density (number of beetles per bean) of cowpea weevils, Callosobruchus maculatus (Fabricus) (Coleoptera: Chrysomelidae) during the larval and pupal period and found both variables affected the coloration and size (measured as area of elytra) of the emerging adults. Lower temperatures produced darker and larger beetles in both sexes, with females also being darker than males. Increased numbers of beetles per bean reduced both the size and darkness of the beetles. The effects of temperature on melanism are consistent with the adaptive thermal melanism hypothesis while the effects of per-bean density on melanism may reflect resource-based trade-offs. However, both effects were modest and left considerable variation in color unexplained.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"585-592"},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144274466","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":"Colony densities and spatial patterns of harvester ants (Pogonomyrmex occidentalis and Pogonomyrmex rugosus) in grazed and ungrazed areas of northern Arizona.","authors":"Derek A Uhey, Andrew J Sánchez Meador, Margaret M Moore, Sneha Vissa, Richard W Hofstetter","doi":"10.1093/ee/nvaf044","DOIUrl":"https://doi.org/10.1093/ee/nvaf044","url":null,"abstract":"<p><p>Harvester ants play a crucial role as ecosystem engineers, particularly in nest-building activities that involve clearing nest-disks of vegetation. These clearings can be large and influence plant communities affecting rangeland management. In some cases, colony density may be increased by grazing but studies are sparse with conflicting results. We examined the effects of grazing on 2 harvester ant species (Pogonomyrmex occidentalis and Pogonomyrmex rugosus) at 5 sites in northern Arizona. We used preestablished grazing-exclusion treatments to compare colony density and spacing adjacent to and within grazed areas. At all sites, colony density was marginally higher in excluded treatments. Only P. occidentalis showed significant spatial patterns in response to grazing, where nests were evenly spaced on small distances (>5 m) in the grazing-excluded treatment. We observed large differences in nest size and density between ant species. Pogonomyrmex occidentalis made larger nests and cleared more land area than P. rugosus. Pogonomyrmex occidentalis peaked in density at 37 nests/ha occupying 1.87% of land area with smaller nearest neighbor distances (10.6 to 13.6 m), while P. rugosus peaked at 16 nests/ha occupying 0.20% of land area with larger nearest neighbor distances (17.9 to 24.3 m). Together our results provide limited but interesting evidence of negative effects of grazing on harvester ant nests. We discuss our findings in the context of other studies measuring colony densities in rangelands and conclude that grazing effects on nest spatial arrangements are inconsistent and differ among locations, highlighting the need for future studies.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505158","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}