{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T16:11:27Z","timestamp":1786119087593,"version":"build-2736575974"},"reference-count":48,"publisher":"Public Library of Science (PLoS)","issue":"8","license":[{"start":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T00:00:00Z","timestamp":1785974400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>\n                    <jats:italic>Drosophila suzukii<\/jats:italic>\n                    is a globally invasive pest causing substantial losses in soft fruit production systems. While diel activity has been studied under laboratory conditions, long-term high-resolution field data remain scarce. Here, we present a multi-year automated monitoring dataset from four field sites in South-West Germany (2017\u20132019) using traps sampling at 3-hour intervals, combined with high-resolution environmental data. Across the study period,\n                    <jats:italic>D. suzukii<\/jats:italic>\n                    exhibited strong seasonal dynamics, with low activity in winter and early spring, increasing in late spring and summer, and declining in autumn. Diel activity patterns were not constant but varied with seasonal abundance and environmental conditions. During periods of high activity, captures were concentrated in daylight hours and often showed bimodal peaks in the morning and late afternoon. In contrast, during low-abundance periods, diel patterns were weak or absent. Temperature effects on capture rates were season-dependent, showing positive associations in late spring and autumn but negative associations in summer. Rain consistently reduced capture rates across all seasons, whereas wind showed weaker and less consistent effects. Overall, our results show that diel activity of\n                    <jats:italic>D. suzukii<\/jats:italic>\n                    emerges under specific seasonal and environmental conditions rather than being a fixed behavioural trait. The custom-built automated trapping system proved reliable for high-frequency field monitoring and provides a scalable approach for other small insect monitoring systems. These findings emphasise the importance of considering both temporal resolution and environmental context when interpreting trap data and designing pest management strategies.\n                  <\/jats:p>","DOI":"10.1371\/journal.pone.0354134","type":"journal-article","created":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T17:31:28Z","timestamp":1786037488000},"page":"e0354134","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Automated long-term field monitoring reveals diel and seasonal activity patterns of Drosophila suzukii"],"prefix":"10.1371","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3873-8812","authenticated-orcid":true,"given":"Felix","family":"Briem","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean Fred","family":"Fontaine","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ralf","family":"Neukampf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heidrun","family":"Vogt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2026,8,6]]},"reference":[{"issue":"3","key":"pone.0354134.ref001","doi-asserted-by":"crossref","first-page":"469","DOI":"10.1007\/s10340-015-0681-z","article-title":"Invasion biology of spotted wing Drosophila (Drosophila suzukii): a global perspective and future priorities","volume":"88","author":"MK Asplen","year":"2015","journal-title":"J Pest Sci"},{"issue":"2","key":"pone.0354134.ref002","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1007\/s13744-024-01127-8","article-title":"The Economic Analyses of the Drosophila suzukii Invasions: A Mini-review","volume":"53","author":"G De Ros","year":"2024","journal-title":"Neotrop Entomol"},{"key":"pone.0354134.ref003","first-page":"149","article-title":"A review of the invasion of Drosophila suzukii in Europe and a draft research agenda for integrated pest management","volume":"65","author":"A Cini","year":"2012","journal-title":"Bull Insectology"},{"issue":"1","key":"pone.0354134.ref004","doi-asserted-by":"crossref","first-page":"18","DOI":"10.3390\/insects8010018","article-title":"Economic impact of the introduction and establishment of Drosophila suzukii on sweet cherry production in Switzerland","volume":"8","author":"D Mazzi","year":"2017","journal-title":"Insects"},{"issue":"1","key":"pone.0354134.ref005","doi-asserted-by":"crossref","DOI":"10.1603\/IPM10010","article-title":"Drosophila suzukii (Diptera: Drosophilidae): Invasive Pest of Ripening Soft Fruit Expanding its Geographic Range and Damage Potential","volume":"2","author":"DB Walsh","year":"2011","journal-title":"Journal of Integrated Pest Management"},{"key":"pone.0354134.ref006","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1007\/s10340-016-0737-8","article-title":"Current SWD IPM tactics and their practical implementation in fruit crops","volume":"89","author":"T Haye","year":"2016","journal-title":"J Pest Sci"},{"issue":"2","key":"pone.0354134.ref007","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1007\/s10340-020-01280-0","article-title":"First record of the invasive spotted wing Drosophila suzukii infesting berry crops in Africa","volume":"94","author":"A Boughdad","year":"2020","journal-title":"J Pest Sci"},{"key":"pone.0354134.ref008","first-page":"191","article-title":"Ein neuer Sch\u00e4dling, die Kirschessigfliege, Drosophila suzukii (Matsumura, 1931), bedroht Obst- und Weinkulturen (Diptera, Drosophilidae)","volume":"56","author":"H Vogt","year":"2012","journal-title":"Entomologische Nachrichten und Berichte"},{"key":"pone.0354134.ref009","first-page":"123","article-title":"Kirschessigfliege Drosophila suzukii \u2013 aktuelle Situation und Monitoring in Deutschland","volume":"450","author":"H Vogt","year":"2014","journal-title":"Julius-K\u00fchn-Archiv"},{"issue":"3","key":"pone.0354134.ref010","doi-asserted-by":"crossref","first-page":"749","DOI":"10.1007\/s10340-016-0739-6","article-title":"An invader supported by a parasite: Mistletoe berries as a host for food and reproduction of Spotted Wing Drosophila in early spring","volume":"89","author":"F Briem","year":"2016","journal-title":"J Pest Sci"},{"issue":"4","key":"pone.0354134.ref011","doi-asserted-by":"crossref","first-page":"125","DOI":"10.3390\/insects9040125","article-title":"Explorative data analysis of Drosophila suzukii trap catches from a seven-year monitoring program in Southwest Germany","volume":"9","author":"F 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