Environmental Entomology最新文献_第5页

Pesticide drift into field margins threatens bee pollinators and other beneficial insects. 农药飘移到田间边缘威胁着蜜蜂传粉者和其他益虫。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-12 DOI: 10.1093/ee/nvaf051

Kelsey K Graham, Angélica Bianchini Sanchez, Scott McArt, Rufus Isaacs

{"title":"Pesticide drift into field margins threatens bee pollinators and other beneficial insects.","authors":"Kelsey K Graham, Angélica Bianchini Sanchez, Scott McArt, Rufus Isaacs","doi":"10.1093/ee/nvaf051","DOIUrl":"https://doi.org/10.1093/ee/nvaf051","url":null,"abstract":"Pesticide drift into sensitive habitats is an increasing concern in agricultural landscapes due to negative impacts on non-target animals including wild bees and other beneficial insects. Creating buffer zones between the crop and sensitive habitats has been commonly proposed as a mitigation measure for reducing off-target pesticide deposition. Given prior evidence of significant pesticide deposition in wildflower plantings adjacent to highbush blueberry farms in Michigan, the aim of this study was to determine the buffer zone needed to significantly reduce pesticide deposition in these plantings. We used silicone bands as passive pesticide samplers placed at varying distances between 0 and 32 m from the crop at conventionally managed blueberry farms during the fruit ripening period when insecticide applications are common. We found there was no significant reduction in number of active ingredients detected in samples at any measured distance from the crop. There was also no significant reduction in pesticide concentration (summed mass of all active ingredients) until 24 m from the field border, and this change was driven by reductions in concentrations of fungicides as there was no significant reduction in total insecticide or herbicide deposition at any of the tested distances. Drift reduction measures, such as installation of windbreaks and use of precision application methods are recommended to reduce off-target pesticide movement.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144283023","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

Time, temperature, and population affect the seasonal cold-hardening response of the adult stage of the mountain pine beetle (Coleoptera: Curculionidae). 时间、温度和种群对山松甲虫成虫期季节性冷硬化反应有影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-12 DOI: 10.1093/ee/nvaf047

Katherine P Bleiker, Gregory D Smith

{"title":"Time, temperature, and population affect the seasonal cold-hardening response of the adult stage of the mountain pine beetle (Coleoptera: Curculionidae).","authors":"Katherine P Bleiker, Gregory D Smith","doi":"10.1093/ee/nvaf047","DOIUrl":"https://doi.org/10.1093/ee/nvaf047","url":null,"abstract":"Cold winter temperatures affect the distribution and abundance of the mountain pine beetle, Dendroctonus ponderosae Hopkins, an eruptive tree-killing bark beetle native to pine forests of western North America. The cold-tolerant larval stage often overwinters but adults also enter winter in some regions or years yet little is known about their ability to survive winter. Here we report on experiments to assess the cold tolerance of mature, brood adults. Adult mountain pine beetles exhibited a strong cold-hardening response over a period of weeks to months that intensified at colder temperatures; however, adult beetles from Cranbrook, which experiences cold winters, were more cold hardy than adults from Victoria, which has mild winters. These results are consistent with a seasonal cold-hardening response that is affected by both environmental factors and local adaptation to climate. The lowest mean and minimum lethal temperatures recorded for preconditioned adults during the study were ‒26.8 and ‒32.2 °C, respectively. Preconditioned adults from Cranbrook and Victoria challenged with prolonged exposure to a cold temperature (‒18 °C) suffered negligible mortality after 8 d; almost half of the Victoria adults and three-quarters of the Cranbrook population were still alive after 28 d. Adults had a limited ability to rapidly cold harden but possessed substantial basal cold tolerance. Our results on the cold tolerance of the adult stage of the mountain pine beetle are expected to contribute to models of forest disturbances that incorporate the population dynamics and climatic suitability of forests for tree-killing bark beetles.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144283024","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 life history and impact of Nepytia janetae (Lepidoptera: Geometridae): an emerging pest in Southwestern montane forests. 西南山地森林新发有害生物刺槐蛾（鳞翅目：尺蛾科）的季节性生活史及其影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-10 DOI: 10.1093/ee/nvae118

Ann M Lynch, Roberta A Fitzgibbon, T J Rogers

{"title":"Seasonal life history and impact of Nepytia janetae (Lepidoptera: Geometridae): an emerging pest in Southwestern montane forests.","authors":"Ann M Lynch, Roberta A Fitzgibbon, T J Rogers","doi":"10.1093/ee/nvae118","DOIUrl":"https://doi.org/10.1093/ee/nvae118","url":null,"abstract":"Nepytia janetae is a previously innocuous non-eruptive species that has recently incurred multiple devastating outbreaks in the American Southwest. We report information on the life cycle, biology, and impact of this species learned during the first 3 known outbreaks in spruce-fir and mixed-conifer forests of the Pinaleño Mountains and White Mountains of Arizona and the Sacramento Mountains of New Mexico. N. janetae is a univoltine, autumn- and winter-feeding wasteful defoliator with 3-yr eruptive outbreaks. Outbreaks terminate with parasitism, viral infection, starvation, and in one outbreak with heavy rainfall during egg deposition. Conifer mortality varied between outbreaks but approached 100% in some stands in all three study areas. Only severely defoliated trees died. Mortality was associated with defoliation severity, moisture availability in the last growing season of the outbreak and/or in the first post-outbreak growing season, and bark beetle activity. Other site and stand variables associated with defoliation and mortality varied between outbreaks, highlighting the need to evaluate multiple outbreaks before identifying factors related to susceptibility and vulnerability to a new pest species. The emergence of this insect as a serious pest is probably related to warming climate but the mechanisms are unclear; the only consistent pattern is an association with low or early loss of snowpack in either the year immediately preceding or the first year of the outbreaks. Differences in host specificity and larval coloration between the distant mountain ranges indicate that N. janetae may be a complex of multiple species or subspecies.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144257644","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

Correction to: The establishment and potential spread of Osmia cornuta (Hymenoptera: Megachilidae) in North America. 更正：美洲大翅虫（膜翅目：大翅虫科）的建立和潜在传播。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-06-06 DOI: 10.1093/ee/nvaf058

引用次数: 0

Genetic evidence of bimodal dispersal distances among adult western corn rootworm (Coleoptera: Chrysomelidae). 西部玉米根虫成虫双峰传播距离的遗传证据（鞘翅目：金蝇科）。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-05-30 DOI: 10.1093/ee/nvaf046

Kyung Seok Kim, Brad S Coates, John D Nason, Michael A Caprio, Joseph L Spencer, Nicholas A Friedenberg, Thomas W Sappington

{"title":"Genetic evidence of bimodal dispersal distances among adult western corn rootworm (Coleoptera: Chrysomelidae).","authors":"Kyung Seok Kim, Brad S Coates, John D Nason, Michael A Caprio, Joseph L Spencer, Nicholas A Friedenberg, Thomas W Sappington","doi":"10.1093/ee/nvaf046","DOIUrl":"https://doi.org/10.1093/ee/nvaf046","url":null,"abstract":"A coherent understanding of adult western corn rootworm (Diabrotica virgifera virgifera) movement ecology has remained elusive because of conflicting evidence of short- and long-distance lifetime dispersal, a type of dilemma called Reid's Paradox. Attempts to resolve this paradox using population genetics strategies have been hindered by the lack of gene flow-genetic drift equilibrium in much of North America related to this species' recent range expansion out of the Great Plains across the Corn Belt. We addressed this challenge by studying a longer-established population in northeastern Colorado and western Kansas, where D. v. virgifera has been resident for >175 yr. We assessed population differentiation using 2,036 single-nucleotide polymorphism markers to obtain indirect estimates of dispersal distances. Significant isolation by distance and pairwise FST estimates across 14 locations suggest these populations are at or near gene flow-genetic drift equilibrium. Low FST values and shallow isolation-by-distance slopes suggest gene flow over longer distances (280 km) than supported by many direct measures of dispersal distance, another type of dilemma known as Slatkin's Paradox. Indeed, based on estimates of adult population density and Wright's neighborhood at each location, median estimated lifetime dispersal of ~87% of adults was only 174 m. Together, our genetic evidence and findings from earlier studies suggest that D. v. virgifera populations consist of 2 behavioral phenotypes, migrants that engage in long-distance dispersal and residents that disperse only locally by diffusion. The resulting bimodal dispersal distribution resolves both Reid's and Slatkin's paradoxes.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144186813","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 gut symbiotic bacteria, Caballeronia insecticola, on reproductive capacity and mating behaviors of insect host, Riptortus pedestris (Hemiptera: Alydidae). 肠道共生细菌Caballeronia杀虫剂对昆虫宿主Riptortus walstris繁殖能力和交配行为的影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-05-28 DOI: 10.1093/ee/nvaf052

Minhyung Jung, Doo-Hyung Lee

{"title":"Effects of gut symbiotic bacteria, Caballeronia insecticola, on reproductive capacity and mating behaviors of insect host, Riptortus pedestris (Hemiptera: Alydidae).","authors":"Minhyung Jung, Doo-Hyung Lee","doi":"10.1093/ee/nvaf052","DOIUrl":"https://doi.org/10.1093/ee/nvaf052","url":null,"abstract":"This study addresses how gut symbiont, Caballeronia insecticola, could change reproductive capacity, mating behaviors, and copulation success of host insect, Riptortus pedestris (Fabricius) (Hemiptera: Alydidae). First, we evaluated symbiotic effects on the female reproductive capacity with varying numbers of males available to a female. Overall, symbiotic females displayed on average a 1.8-fold increase in egg production compared to aposymbiotic individuals. However, eggs from symbiotic females were on average 42% less viable, compared to those from the aposymbiotic, when paired with single male. The decrease in the hatchability was alleviated to 12% when paired with 3 males. Consequently, this yielded significant increase in the number of viable offspring by symbiotic females when multiple males were available. Second, we evaluated symbiotic effects on male morphometric characteristics including hind legs used as weapon, and found significant increases in hind leg sizes associated with symbiosis. Finally, we investigated mating behaviors between a female and 2 males of different symbiotic status. Symbiotic females displayed on average a 1.4-fold increase in the number of copulations compared to the aposymbiotic. From both female types, however, no significant difference was observed in their mate choice and copulation success rate between aposymbiotic and symbiotic males. However, symbiotic females exhibited on average 17% reduction in copulation duration compared to the aposymbiotic. Copulation failure was caused more frequently by female's rejection than by intruder male's disruption for both female types. Our study demonstrates that symbiotic females benefit from the symbiosis increasing their reproductive capacity and copulation frequency.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144157570","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

Impact of planting date on rice water weevil (Coleoptera: Curculionidae) and stemborer (Lepidoptera: Crambidae) infestations in drill-seeded rice. 播期对水稻水象甲（鞘翅目：瓢虫科）和蒸蛾（鳞翅目：瓢虫科）侵染的影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-05-25 DOI: 10.1093/ee/nvaf043

James M Villegas, Muhammad D Khan, Blake E Wilson, Michael J Stout

{"title":"Impact of planting date on rice water weevil (Coleoptera: Curculionidae) and stemborer (Lepidoptera: Crambidae) infestations in drill-seeded rice.","authors":"James M Villegas, Muhammad D Khan, Blake E Wilson, Michael J Stout","doi":"10.1093/ee/nvaf043","DOIUrl":"https://doi.org/10.1093/ee/nvaf043","url":null,"abstract":"The rice water weevil, Lissorhoptrus oryzophilus (Kuschel), is the most widely distributed and destructive early-season pest of rice in the United States. Injury caused by feeding of weevil larvae on rice roots results in significant yield losses. In Louisiana, a complex of stem-boring lepidopteran pests also attacks rice. Of this complex, the Mexican rice borer, Eoreuma loftini (Dyar), has recently invaded Louisiana and now poses a consistent threat to rice production. To study the effects of planting date on rice water weevil density and stem borer damage (whiteheads), field experiments were conducted in Louisiana from 2018 to 2020. Six rice cultivars (CL152, Cheniere, Cocodrie, Jazzman-2, Jupiter, and PVL01) were drill-planted in small plots across 6 planting date ranges per year. Weevil densities on rice roots were evaluated 3 and 4 weeks after permanent flood establishment, and stem borer infestations were assessed by recording the total number of whiteheads in each plot at 100% heading. At grain maturity, entire plots were harvested. Weevil infestation levels remained high throughout all planting dates; however, densities were slightly lower in the later planting dates. The rice cultivar 'Jupiter' supported higher weevil densities compared to 'Cheniere'. Whitehead densities increased with later planting. The rice cultivar 'PVL01' consistently had the highest number of whiteheads. In addition, yields were lower at late planting dates. Results from this study suggest that rice water weevil poses a consistent threat throughout the range of typical planting dates, whereas the stem borer incidence tends to become more problematic in later-planted rice.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144141818","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

Bumble bees (Bombus spp., Hymenoptera: Apidae) of Rhode Island: species richness, relative abundance, and floral visitation. 罗德岛大黄蜂（蜂科，膜翅目：蜂科）：物种丰富度、相对丰度和访花行为。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-05-24 DOI: 10.1093/ee/nvaf006

Elizabeth M Varkonyi, Casey L Johnson, Julia J Vieira, Howard S Ginsberg, Steven J Sipolski, Gary Casabona, Jason B Oliver, Steven R Alm

{"title":"Bumble bees (Bombus spp., Hymenoptera: Apidae) of Rhode Island: species richness, relative abundance, and floral visitation.","authors":"Elizabeth M Varkonyi, Casey L Johnson, Julia J Vieira, Howard S Ginsberg, Steven J Sipolski, Gary Casabona, Jason B Oliver, Steven R Alm","doi":"10.1093/ee/nvaf006","DOIUrl":"https://doi.org/10.1093/ee/nvaf006","url":null,"abstract":"Historical records (1900 to 1999) indicate that 12 bumble bee species occurred in Rhode Island, however, baseline data of current bee fauna are limited. To assess the status of bumble bee species in Rhode Island, a statewide survey was conducted by visual observations of bees visiting flowers and using vane traps. Floral observations in 2020 and 2021 were conducted to document flowering plant visitations and bumble bee species richness and abundance. Bees were collected using vane traps at farms, golf courses, and residential areas throughout the state from 2019 to 2021. Non-Bombus bees collected in vane traps were also identified. Pollen from historical and modern bumble bee specimens were analyzed to establish a floral association species record. Among 12 historical Bombus species documented from Rhode Island, B. affinis Cresson, B. citrinus Smith, B. pensylvanicus DeGeer, B. ternarius Say, or B. terricola Kirby were not found, suggesting rarity or current absence. Bombus impatiens Cresson was the most abundant survey species, while B. auricomus Robertson, a new state record, was least abundant. Bombus species richness was highest on Monarda fistulosa L., Trifolium pratense L., and Lavandula angustifolia Mill, and M. fistulosa had the highest bee visitations. Blue vane traps purchased in different years from the same company differed significantly in bee captures (both Bombus and non-Bombus), indicating that caution is needed when assessing bee populations with seemingly standardized trapping methods. This study provides baseline data regarding the current status of Rhode Island bumble bees that will be critical to implementing conservation practices for declining species.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136096","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 effects of clothianidin exposure on metabolic rates across life stages of Danaus plexippus (Lepidoptera: Nymphalidae). 噻虫胺暴露对丛田鼠（鳞翅目：蛱蝶科）各生命阶段代谢率的差异影响。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-05-24 DOI: 10.1093/ee/nvaf041

Staci Cibotti, Jared G Ali, Rudolf J Schilder

{"title":"Differential effects of clothianidin exposure on metabolic rates across life stages of Danaus plexippus (Lepidoptera: Nymphalidae).","authors":"Staci Cibotti, Jared G Ali, Rudolf J Schilder","doi":"10.1093/ee/nvaf041","DOIUrl":"https://doi.org/10.1093/ee/nvaf041","url":null,"abstract":"The restoration of milkweed to agricultural landscapes is thought to be essential for bolstering declining monarch butterfly (Danaus plexippus) populations. However, the rise of neonicotinoid seed treatments in recent decades has severely increased the toxicity of these landscapes for insects. It is therefore crucial that we understand how monarchs utilize neonicotinoid-contaminated plants and their impacts on monarch health to better inform conservation efforts. We monitored monarch usage of milkweed (Asclepias syriaca) plantings adjacent to clothianidin-treated and untreated cornfields and found both were utilized with equal frequency. We then examined how plant-mediated larval clothianidin exposure affected monarch development, morphology, and energetics by tracking mortality rates, development times, body metrics, and metabolic rates across life stages. We found no difference in mortality rates or body metrics between the 2 treatment groups. Larvae feeding on clothianidin-treated plants required less time to reach pupation than those feeding on control plants, but there was no difference in the time between pupation and eclosion. Larval clothianidin exposure did not affect the resting metabolic rates of monarchs at any life stage; however, it lowered both the average and peak flight metabolic rates of adults, with the effects being stronger in males than females. These findings suggest that larval exposure to clothianidin-contaminated plants can have carry-over sublethal effects in adulthood, which may adversely affect flight capacity, particularly in males. Further studies are needed to elucidate the possible impacts on crucial aspects of monarch ecology, including their foraging, migratory, and reproductive potential.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136110","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

The role of pheromones and temporal mechanisms in the reproductive isolation of Monochamus maculosus, Monochamus notatus, and Monochamus scutellatus (Coleoptera: Cerambycidae). 信息素在斑田鼠、野田鼠和褐田鼠生殖隔离中的作用及其时间机制（鞘翅目：天牛科）。

IF 1.8 3区农林科学

Environmental Entomology Pub Date : 2025-04-17 DOI: 10.1093/ee/nvaf017

Samara M M Andrade, Michael J McTavish, Sandy M Smith, Jeremy D Allison

{"title":"The role of pheromones and temporal mechanisms in the reproductive isolation of Monochamus maculosus, Monochamus notatus, and Monochamus scutellatus (Coleoptera: Cerambycidae).","authors":"Samara M M Andrade, Michael J McTavish, Sandy M Smith, Jeremy D Allison","doi":"10.1093/ee/nvaf017","DOIUrl":"10.1093/ee/nvaf017","url":null,"abstract":"The mechanisms used to facilitate mate location among insects-such as pheromones-can inhibit interspecific attraction and confer reproductive isolation. However, pheromone components seem conserved within the genus Monochamus (Coleoptera: Cerambycidae) with the compound 2-(undecyloxy)ethanol (referred to as monochamol) being identified as the sex-aggregation pheromone or putative pheromone attractant for at least 15 species in this genus. This pheromone parsimony suggests the existence of additional isolating mechanisms. Here we describe the results of laboratory and field assays of additional mechanisms, including laboratory volatile collections and field trapping experiments that assessed the potential presence of additional pheromone components, diel rhythms of pheromone production, and phenological/diel flight activity in the reproductive isolation of sympatric populations of three species of Monochamus in the Great Lakes Forest Region of Ontario, Canada. Chemical analyses of volatile extractions indicate that monochamol is produced by male Monochamus maculosus and Monochamus scutellatus, but no qualitative differences were observed in male extracts of these two species suggesting that there are no additional pheromone components that confer specificity. No quantitative differences were found in the production of monochamol by male M. scutellatus during the photophase and scotophase suggesting there is no diel rhythm in pheromone production. Our results indicate that M. scutellatus flies earlier in the season and day than M. maculosus and Monochamus notatus, which could partially contribute to their reproductive isolation. Overall, no obvious differences in pheromone composition were observed but minor differences in flight times were observed, suggesting other isolating mechanisms may exist.","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"233-242"},"PeriodicalIF":1.8,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12005948/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143556191","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}

引用次数: 0