Environmental Entomology最新文献

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Effects of temperature on the development of Rachiplusia nu (Lepidoptera: Noctuidae) and Chrysodeixis includens (Lepidoptera: Noctuidae) and implications on population growth in Brazil. 温度对 Rachiplusia nu(鳞翅目:夜蛾科)和 Chrysodeixis includens(鳞翅目:夜蛾科)发育的影响以及对巴西种群增长的影响。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-17 DOI: 10.1093/ee/nvae097
Larissa Pasqualotto, Juarez da Silva Alves, Helene Pedó, Michele de Souza Trombim, Mireli de Souza Trombim, Vanessa Nogueira Soares, Renato Jun Horikoshi, Leonardo Miraldo, Ramiro Ovejero, Geraldo Berger, Daniel Bernardi
{"title":"Effects of temperature on the development of Rachiplusia nu (Lepidoptera: Noctuidae) and Chrysodeixis includens (Lepidoptera: Noctuidae) and implications on population growth in Brazil.","authors":"Larissa Pasqualotto, Juarez da Silva Alves, Helene Pedó, Michele de Souza Trombim, Mireli de Souza Trombim, Vanessa Nogueira Soares, Renato Jun Horikoshi, Leonardo Miraldo, Ramiro Ovejero, Geraldo Berger, Daniel Bernardi","doi":"10.1093/ee/nvae097","DOIUrl":"https://doi.org/10.1093/ee/nvae097","url":null,"abstract":"<p><p>Temperature is an elementary component in mathematical models for predicting the biotic potential of insects. In this study, the objective was to evaluate the impact of different constant temperatures of 8, 10, 15, 20, 25, 30, and 32°C on the biological parameters, lower temperature thresholds (TT), and estimating the number of annual generations (NAG) of Rachiplusia nu and Chrysodeixis includens, both pests associated with the soybean crop in Brazil. There was no development of the immature stages of R. nu at 8°C, as was also found for C. includens at 8 and 10°C. However, at 10°C all stages of R. nu developed. In general, temperatures of 20 and 25°C were the most suitable for the development of R. nu and C. includens, providing egg to adult viability of over 60% and the highest total fecundities. However, the temperature of 32°C negatively affected the parameters of the fertility life table. Rachiplusia nu showed the lowest TT (eggs: 4.9°C; larvae: 10.8°C; pupa: 14.1°C; and egg to adult: 8.9°C) when compared with C. includens (eggs: 7.5°C; larvae: 15.3°C; pupa: 16.1°C; and egg to adult: 11.3°C). Based on TT values, the NAG varied from 3.9 in cold regions to 7.5 in warm regions. However, for C. includens, we can infer that the species can reach up to 8.8 generations in warm regions. The results of the present study are important for understanding the occurrence of R. nu and C. includens in field conditions and can help with the implications of management strategies.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460880","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
Antennal sensilla of Cyclocephala barrerai (Coleoptera: Melolonthidae): morphology, sexual dimorphism, allometric relationships, and function. Cyclocephala barrerai(鞘翅目: Melolonthidae)的触角感觉器:形态、性双态性、同源关系和功能。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-16 DOI: 10.1093/ee/nvae087
Abraham Sanchez-Cruz, Daniel Tapia-Maruri, Patricia Villa-Ayala, Norma Robledo, Angel A Romero-López, Julio C Rojas, Alfredo Jiménez-Pérez
{"title":"Antennal sensilla of Cyclocephala barrerai (Coleoptera: Melolonthidae): morphology, sexual dimorphism, allometric relationships, and function.","authors":"Abraham Sanchez-Cruz, Daniel Tapia-Maruri, Patricia Villa-Ayala, Norma Robledo, Angel A Romero-López, Julio C Rojas, Alfredo Jiménez-Pérez","doi":"10.1093/ee/nvae087","DOIUrl":"https://doi.org/10.1093/ee/nvae087","url":null,"abstract":"<p><p>Scarab beetles use pheromones and volatiles to search for their partners and host plants. The perception of these compounds occurs in the beetle antennae, particularly in the sensilla. Relatively few studies have morphologically and physiologically characterized the sensilla of scarab beetles. Cyclocephala barrerai Martínez is a beetle distributed in Mexico. Male beetles have larger antennal lamellae than females, and in both cases, the size of this structure is related to their weight. Previous studies have reported that both sexes are attracted to bacterial volatiles isolated from the female genital chambers. Female cuticular hydrocarbons may act as a sexual contact pheromone. However, antennal sensilla and their electrophysiological responses to behaviorally relevant compounds remain to be investigated. Here, we describe and report the types, allometric relationships, and functions of sensilla found in the lamellae of both C. barrerai sexes. Sensilla were identified, classified, measured, and counted to identify intra and intersexual relationships. The single sensillum recordings showed that plant volatiles, hydrocarbons, and heat stimulated receptor neurons. We identified 2 new types of sensilla basiconica in the scape. Males have more and larger antennal sensilla placodea IV, which specializes in detecting pheromones, plant volatiles, and heat. Females have a greater diversity of sensilla.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460876","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: New contributions to the knowledge of two riparian mosquitoes in northwestern Spain: Anopheles petragnani and Culex mimeticus (Diptera: Culicidae). 更正:对西班牙西北部两种河岸蚊子知识的新贡献:Anopheles petragnani and Culex mimeticus (Diptera: Culicidae).
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-16 DOI: 10.1093/ee/nvae105
{"title":"Correction to: New contributions to the knowledge of two riparian mosquitoes in northwestern Spain: Anopheles petragnani and Culex mimeticus (Diptera: Culicidae).","authors":"","doi":"10.1093/ee/nvae105","DOIUrl":"https://doi.org/10.1093/ee/nvae105","url":null,"abstract":"","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460878","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 water deprivation tolerances of adult Rhagoletis indifferens and Rhagoletis pomonella (Diptera: Tephritidae) as a possible factor affecting their distributional abundances in Washington State, USA. 成虫 Rhagoletis indifferens 和 Rhagoletis pomonella(双翅目:Tephritidae)对缺水的不同耐受性可能是影响其在美国华盛顿州分布丰度的一个因素。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-16 DOI: 10.1093/ee/nvae096
Wee L Yee, Alexander C Rose, Joshua M Milnes, Jeffrey L Feder
{"title":"Differential water deprivation tolerances of adult Rhagoletis indifferens and Rhagoletis pomonella (Diptera: Tephritidae) as a possible factor affecting their distributional abundances in Washington State, USA.","authors":"Wee L Yee, Alexander C Rose, Joshua M Milnes, Jeffrey L Feder","doi":"10.1093/ee/nvae096","DOIUrl":"https://doi.org/10.1093/ee/nvae096","url":null,"abstract":"<p><p>Insects that evolved in mesic regions may have difficulty establishing in xeric regions. Rhagoletis pomonella (Walsh) (Diptera: Tephritidae) was introduced into drier western North America from mesic eastern North America while Rhagoletis indifferens Curran is native to western North America. Here, we predicted that R. indifferens survives water deprivation longer than R. pomonella, as R. indifferens is more abundant than R. pomonella in dry central Washington (WA) State, USA. Sweet and bitter cherry-origin R. indifferens and apple- and hawthorn-origin R. pomonella from xeric central or mesic western WA were provided water throughout or were water-deprived at 2-4 and 14-18 d old and held at 20°C or 30/31°C and daily survival recorded. At 20°C and 30°C, western WA apple-origin R. pomonella provided water survived longer than sweet cherry-origin R. indifferens. When water-deprived, however, 2-4 d old R. indifferens, although smaller, survived significantly longer than western WA apple-origin R. pomonella of the same age. This was also generally true for 14-18 d old flies, although differences were less often significant. Central WA large-thorn hawthorn-origin R. pomonella survived water deprivation significantly longer than western WA apple-origin R. pomonella, and as long as R. indifferens. Water-deprived flies of both species survived longer at 20°C than 30/31°C. Survival analyses suggest that low water availability rather than high temperature contributes to lower R. pomonella than R. indifferens abundances in central WA, with R. pomonella populations in that region differing from western WA R. pomonella with respect to tolerance of xeric climates.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460879","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
Automated lepidopteran pest developmental stages classification via transfer learning framework. 通过迁移学习框架实现鳞翅目害虫发育阶段的自动分类。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-14 DOI: 10.1093/ee/nvae085
Wei-Bo Qin, Arzlan Abbas, Sohail Abbas, Aleena Alam, De-Hui Chen, Faisal Hafeez, Jamin Ali, Donato Romano, Ri-Zhao Chen
{"title":"Automated lepidopteran pest developmental stages classification via transfer learning framework.","authors":"Wei-Bo Qin, Arzlan Abbas, Sohail Abbas, Aleena Alam, De-Hui Chen, Faisal Hafeez, Jamin Ali, Donato Romano, Ri-Zhao Chen","doi":"10.1093/ee/nvae085","DOIUrl":"https://doi.org/10.1093/ee/nvae085","url":null,"abstract":"<p><p>The maize crop is highly susceptible to damage caused by its primary pests, which poses considerable challenges in manually identifying and controlling them at various larval developmental stages. To mitigate this issue, we propose an automated classification system aimed at identifying the different larval developmental stages of 23 instars of 4 major lepidopteran pests: the Asian corn borer, Ostrinia furnacalis (Guenée; Lepidoptera: Crambidae), the fall armyworm, Spodoptera frugiperda (J.E. Smith; Lepidoptera: Noctuidae), the oriental armyworm, Mythimna separata (Walker; Lepidoptera: Noctuidae), and the tobacco cutworm, Spodoptera litura (Fabricius; Lepidoptera: Noctuidae). Employing 5 distinct Convolutional Neural Network architectures-Convnext, Densenet121, Efficientnetv2, Mobilenet, and Resnet-we aimed to automate the process of identifying these larval developmental stages. Each model underwent fine-tuning using 2 different optimizers: stochastic gradient descent with momentum and adaptive moment estimation (Adam). Among the array of models tested, Densenet121, coupled with the Adam optimizer, exhibited the highest classification accuracy, achieving an impressive 96.65%. The configuration performed well in identifying the larval development stages of all 4 pests, with precision, recall, and F1 score evaluation indicators reaching 98.71%, 98.66%, and 98.66%, respectively. Notably, the model was ultimately tested in a natural field environment, demonstrating that Adam_Densenet121 model achieved an accuracy of 90% in identifying the 23 instars of the 4 pests. The application of transfer learning methodology showcased its effectiveness in automating the identification of larval developmental stages, underscoring promising implications for precision-integrated pest management strategies in agriculture.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460877","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
A test method for assessing chronic oral toxicity of a pesticide to solitary nesting orchard bees, Osmia spp. (Hymenoptera: Megachilidae). 评估杀虫剂对独巢果园蜜蜂茭白(膜翅目:Megachilidae)慢性口服毒性的试验方法。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-14 DOI: 10.1093/ee/nvae098
Ana R Cabrera, Joshua Zuber, Niklas Hamaekers, Allen Olmstead, Pamela Jensen, Prema Karunanithi, Daniel R Schmehl, Nina Exeler
{"title":"A test method for assessing chronic oral toxicity of a pesticide to solitary nesting orchard bees, Osmia spp. (Hymenoptera: Megachilidae).","authors":"Ana R Cabrera, Joshua Zuber, Niklas Hamaekers, Allen Olmstead, Pamela Jensen, Prema Karunanithi, Daniel R Schmehl, Nina Exeler","doi":"10.1093/ee/nvae098","DOIUrl":"https://doi.org/10.1093/ee/nvae098","url":null,"abstract":"<p><p>Orchard bees of the genus Osmia Panzer are important pollinators of fruit trees in various regions of the world, with some species commercially available in the United States and Europe. In addition to their pollination services, Osmia lignaria, Osmia cornifrons, Osmia bicornis, and Osmia cornuta have been identified as potential model species for solitary bees in pesticide risk assessment and have been used for the development of new methods to test acute lethal effects via contact and oral routes of exposure. Our goal was to expand the available methodology to characterize the toxicity of pesticides for these solitary bees through a chronic oral test for adult bees. Chronic oral toxicity of pesticides to orchard bees has been reported, but methods differ among research groups. In our study, O. lignaria, O. cornifrons, O. bicornis, and O. cornuta female bees had access to sucrose solution ad libitum in separate, species-specific 10-day tests. Mean body mass, mean daily consumption, and survival differed among the studied bee species. The dose-response test design was validated with dimethoate, a reference toxic compound, and chronic toxicity endpoints were estimated for the 4 Osmia species. The median lethal daily doses normalized by weight for O. lignaria, O. bicornis, O. cornuta, and O. cornifrons were within the same order of magnitude at 0.23, 0.26, 0.49, and 0.61 µg dimethoate/g bee/day, respectively. The methodology described here was aligned as much as possible with the available honey bee and bumble bee standard methods to facilitate the comparison of chronic toxicity profiles among bee species.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142460875","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
Competition between brown stink bug (Hemiptera: Pentatomidae) and corn earworm (Lepidoptera: Noctuidae) in field corn. 田间玉米中褐蝽(半翅目:五蝽科)与玉米穗虫(鳞翅目:夜蛾科)之间的竞争。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-11 DOI: 10.1093/ee/nvae065
Tim B Bryant, Jeremy K Greene, Francis P F Reay-Jones
{"title":"Competition between brown stink bug (Hemiptera: Pentatomidae) and corn earworm (Lepidoptera: Noctuidae) in field corn.","authors":"Tim B Bryant, Jeremy K Greene, Francis P F Reay-Jones","doi":"10.1093/ee/nvae065","DOIUrl":"10.1093/ee/nvae065","url":null,"abstract":"<p><p>Interspecific competition is an important ecological concept which can play a major role in insect population dynamics. In the southeastern United States, a complex of stink bugs (Hemiptera: Pentatomidae), primarily the brown stink bug, Euschistus servus (Say), and corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), are the 2 most common pests of field corn, Zea mays L. (Poales: Poaceae). Stink bugs have the greatest potential for economic injury during the late stages of vegetative corn development when feeding can result in deformed or \"banana-shaped\" ears and reduced grain yield. Corn earworm moths lay eggs on corn silks during the first stages of reproductive development. A 2-year field study was conducted to determine the impact of feeding by the brown stink bug during late-vegetative stages on subsequent corn earworm oviposition, larval infestations, and grain yield. Brown stink bug feeding prior to tasseling caused deformed ears and reduced overall grain yield by up to 92%. Across all trials, varying levels of brown stink bug density and injury reduced the number of corn earworm larvae by 29-100% and larval feeding by 46-85%. Averaged across brown stink bug densities, later planted corn experienced a 9-fold increase in number of corn earworm larvae. This is the first study demonstrating a competitive interaction between these major pests in a field corn setting, and these results have potential implications for insect resistance management.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"860-869"},"PeriodicalIF":1.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141534024","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
Wireworm species associated with corn and soybean agroecosystems in Ontario, Canada. 与加拿大安大略省玉米和大豆农业生态系统相关的线虫种类。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-11 DOI: 10.1093/ee/nvae063
Jocelyn L Smith, Willem G van Herk, Timothy Schwinghamer, Tracey Baute, Victor Limay-Rios, Andrew Frewin, Mika Sevcik, Bob Vernon
{"title":"Wireworm species associated with corn and soybean agroecosystems in Ontario, Canada.","authors":"Jocelyn L Smith, Willem G van Herk, Timothy Schwinghamer, Tracey Baute, Victor Limay-Rios, Andrew Frewin, Mika Sevcik, Bob Vernon","doi":"10.1093/ee/nvae063","DOIUrl":"10.1093/ee/nvae063","url":null,"abstract":"<p><p>Wireworms, the larvae of click beetles (Coleoptera: Elateridae), are often the target of insecticide seed treatments commonly used in corn (Zea mays L.) and soybean (Glycine max (L.) Merr.) production in North America. Nevertheless, there is a lack of knowledge of the species, life history, and economic impact of wireworms present in these agroecosystems. An extensive survey of wireworms was conducted in corn and soybean fields in Ontario, Canada, from 2014 to 2017 to document species distribution and co-occurrence and to identify risk factors related to their abundance. In total, 4,332 specimens were collected from 1,245 different sampling records. The dominant species collected was Limonius agonus (Say) (Coleoptera: Elateridae) comprising 71.5% of the specimens. The remaining wireworm specimens were identified as Hypnoidus abbreviatus (Say), Melanotus similis (Kirby), M. cribulosus (LeConte), M. depressus (Melsheimer), M. communis (Gyllenhal), Agriotes mancus (Say), Aeolus mellillus (Say), and Hemicrepidius spp (Germar). Multiple wireworm species were found to commonly occur within the same field and the same sample. Path analysis was conducted to investigate whether site, soil, and agronomic characteristics influenced wireworm distribution and abundance. Several significant relationships were found between wireworm species and geographic factors, soil texture, and agronomic practices. The results of this survey provide critical information that can be used to improve integrated pest management of the major wireworm genera found in corn and soybean agroecosystems in Ontario.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"760-770"},"PeriodicalIF":1.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11469084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733829","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
Evidence for an adult summer diapause in mountain pine beetle (Coleoptera: Curculionidae) that varies geographically and among haplogroups. 山松甲虫(鞘翅目:Curculionidae)成虫夏季休眠的证据,这种休眠在地域上和单倍群之间存在差异。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-11 DOI: 10.1093/ee/nvae068
E Matthew Hansen, Barbara J Bentz, L Scott Baggett
{"title":"Evidence for an adult summer diapause in mountain pine beetle (Coleoptera: Curculionidae) that varies geographically and among haplogroups.","authors":"E Matthew Hansen, Barbara J Bentz, L Scott Baggett","doi":"10.1093/ee/nvae068","DOIUrl":"10.1093/ee/nvae068","url":null,"abstract":"<p><p>Identifying dormancy traits is important for predicting insect population success, particularly in a changing climate that could disrupt evolved traits. The mountain pine beetle (Dendroctonus ponderosae Hopkins) is native to North America, is responsible for millions of acres of tree mortality, and is expanding northward in Canada. Research has identified thermal traits important to epidemic-phase ecology that vary among populations. Genomic research identified 3 mountain pine beetle haplogroups representing Pleistocene glacial refugia. Significant variation in generation timing aligning with the haplogroups has been observed. The adult stage was previously identified as the likely cause of differences among populations, although the mechanism(s) remain unclear. We tested for an adult summer diapause that varies among populations from 2 haplogroups, southern Colorado (CO) (central haplogroup) and southern Idaho (ID) (eastern haplogroup) using respirometry and reproduction experiments. Warm temperatures (25 °C) resulted in reduced respiration rates of central haplogroup mountain pine beetle compared to a cool temperature treatment (15 °C), whereas respiration of the eastern haplogroup did not differ between the treatments. Mated pairs of central haplogroup mountain pine beetle reared/held at 15 °C were more likely to be classified with a higher reproductive success rating compared to pairs reared/held at 25 °C. These results support a facultative summer adult diapause in southern CO central haplogroup mountain pine beetle. Manifestation of this diapause was low/absent among adults from the northerly ID location. This diapause likely serves to maintain univoltinism shown to be important for mountain pine beetle epidemic-phase ecology. The variation occurring among haplogroups highlights the long-term, evolved processes driving local adaptations in mountain pine beetle.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"837-848"},"PeriodicalIF":1.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141757875","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
Dietary oxyclozanide influences antioxidant enzyme activities and damages DNA in Galleria mellonella (Lepidoptera: Pyralidae). 膳食氧环扎腈会影响瘿蚊(鳞翅目:稚虫科)的抗氧化酶活性并破坏其 DNA。
IF 1.8 3区 农林科学
Environmental Entomology Pub Date : 2024-10-11 DOI: 10.1093/ee/nvae070
Cihat Çelik, David Stanley, Ender Büyükgüzel
{"title":"Dietary oxyclozanide influences antioxidant enzyme activities and damages DNA in Galleria mellonella (Lepidoptera: Pyralidae).","authors":"Cihat Çelik, David Stanley, Ender Büyükgüzel","doi":"10.1093/ee/nvae070","DOIUrl":"10.1093/ee/nvae070","url":null,"abstract":"<p><p>Oxyclozanide (OXY) is an anthelmintic widely used in the treatment of flatworm infection and fasciolosis. It also has antiadenovirus, antibiofilm, antifungal, and antibacterial activities. Various chemicals have been suggested as alternative chemicals in insect pest management. Here, the oxidative and genotoxic effects of OXY on 7th instars, pupae and adults of the model organism Galleria mellonella (Linnaeus) (Lepidoptera: Pyralidae) were examined. First-instar larvae were reared on 0.003, 0.03, 0.3, and 1.5 g OXY per 100 g artificial diets. Compared with all tested OXY concentrations and controls without OXY, dietary OXY led to increased antioxidant capacity and genotoxic effects. Concentrations of malondialdehyde, an oxidative stress marker, were significantly increased in adults of larvae reared on OXY-charged diets at 0.3 and 1.5 g/100 g compared to the adult control group. We also recorded a significant increase in the genotoxic test data (Tail length, Tail DNA %, Tail moment) at the same stages and concentrations. We recorded significant increases in glutathione-S-transferase, superoxide dismutase (SOD) and glutathione peroxidase activities in larvae fed high OXY concentrations. SOD and catalase activities were also significantly increased at the concentration of 0.03 g/100 g of OXY in the pupal and adult stages. Cytochrome P450 monooxygenase activity was significantly increased at the highest concentration of OXY in the larval and pupal stages. Also, our regression analysis indicates a correlation between the markers of oxidative stress, antioxidant enzymes and comet parameters. These data indicate that OXY induces oxidative stress and antioxidative enzyme response.</p>","PeriodicalId":11751,"journal":{"name":"Environmental Entomology","volume":" ","pages":"789-800"},"PeriodicalIF":1.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909828","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}
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