{"title":"Spinetoram exposure disrupts survival of flower bugs and leads to population collapse in orchards","authors":"Tao Lin, Yong Chen, Yixin Chen, Jinfeng Hu, Shuo Lin, Jianwei Zhao, Guang Yang, Fenghua Yang, Hui Wei","doi":"10.1127/entomologia/2023/2350","DOIUrl":null,"url":null,"abstract":"The increasing use of reduced-risk insecticides in orchard management has raised concerns regarding their potential risk to beneficial arthropods. Depending solely on acute short-term effects tends to underestimate the risks posed by spinetoram to natural enemies. Limited information is available on the long-term consequences of low exposure to spinetoram on natural enemies. The survival and predation of Orius strigicollis gradually decreased with the increase in spinetoram exposure rate, and the preoviposition periods were prolonged above 0.208 g a.i. ha-1. However, the adult lifespan, reproductive rate, population parameters, intrinsic rate of increase, finite rate of increase, and net reproductive rate were reduced, while the transformation rate was increased with the increase in spinetoram exposure rate. The population size and predation potential of O. strigicollis at 0.104 g a.i. ha-1 were higher than other treatments but did not differ from those of the control. Field residue monitoring showed that the peak residue levels of spinetoram on Eriobotrya japonica and Bidens alba flowers were 0.525–0.589 g ha-1 and 0.139–0.148 g ha-1, respectively, and it required at least 28 and 9 days, respectively, for the residue levels to dissipate to a level with no toxic effect on O. strigicollis. Therefore, the sublethal effects resulting from trace residues is the primary factor responsible for O. strigicollis population collapse. We provide insights for mitigating the negative impacts of spinetoram on O. strigicollis and for integrated pest management development.","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"31 1","pages":""},"PeriodicalIF":5.6000,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Entomologia Generalis","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1127/entomologia/2023/2350","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENTOMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The increasing use of reduced-risk insecticides in orchard management has raised concerns regarding their potential risk to beneficial arthropods. Depending solely on acute short-term effects tends to underestimate the risks posed by spinetoram to natural enemies. Limited information is available on the long-term consequences of low exposure to spinetoram on natural enemies. The survival and predation of Orius strigicollis gradually decreased with the increase in spinetoram exposure rate, and the preoviposition periods were prolonged above 0.208 g a.i. ha-1. However, the adult lifespan, reproductive rate, population parameters, intrinsic rate of increase, finite rate of increase, and net reproductive rate were reduced, while the transformation rate was increased with the increase in spinetoram exposure rate. The population size and predation potential of O. strigicollis at 0.104 g a.i. ha-1 were higher than other treatments but did not differ from those of the control. Field residue monitoring showed that the peak residue levels of spinetoram on Eriobotrya japonica and Bidens alba flowers were 0.525–0.589 g ha-1 and 0.139–0.148 g ha-1, respectively, and it required at least 28 and 9 days, respectively, for the residue levels to dissipate to a level with no toxic effect on O. strigicollis. Therefore, the sublethal effects resulting from trace residues is the primary factor responsible for O. strigicollis population collapse. We provide insights for mitigating the negative impacts of spinetoram on O. strigicollis and for integrated pest management development.
期刊介绍:
Its scope covers all aspects of basic and applied research dealing with insects and more broadly with arthropods inhabiting wild, agricultural and/or urban habitats. The journal also considers research integrating various disciplines and issues within the broad field of entomology and ecology.
Entomologia Generalis publishes high quality research articles on advances in knowledge on the ecology and biology of arthropods, as well as on their importance for key ecosystems services, e.g. as biological control and pollination. The journal devotes special attention to contributions providing significant advances (i) on the fundamental knowledge and on sustainable control strategies of arthropod pests (including of stored products) and vectors of diseases, (ii) on the biology and ecology of beneficial arthropods, (iii) on the spread and impact of invasive pests, and (iv) on potential side effects of pest management methods.
Entomologia Generalis welcomes review articles on significant developments in the field of entomology. These are usually invited by the editorial board, but proposals may be sent to the Editor-in-Chief for preliminary assessment by the editorial board before formal submission to the journal. The journal also considers comments on papers published in Entomologia Generalis, as well as short notes on topics that are of broader interest.