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Mesocosms

Chironomids are a useful group for investigating body size responses to warming temperature, due to their high local abundance, sensitivity to environmental change and trophic position as fundamental prey for other invertebrates, fish and birds. We collected specimens of six species of chironomids every two weeks over a two-year period (2017-2018) from mesocosm experiments using five ponds at ambient temperature and five ponds at 4℃ higher than ambient temperature. We investigated 1) wing length responses to temperature within species and between sexes using a regression analysis, 2) interspecific body size responses to test whether the body size of species influences sensitivity to warming temperature, and 3) the correlation between emergence date and wing length. We found a significantly shorter wing length with warming temperature in both sexes of Procladius crassinervis and Tanytarsus nemorosus, in males of Polypedilum sordens, but no significant relationship in the other three species studied. The average body size of a species affects the magnitude of the temperature-size responses in both sexes, with larger species shrinking disproportionately more with increasing temperature. There is a significant decline in wing length with emergence date across most species studied (excluding Polypedilum nubeculosum and P. sordens), indicating that individuals emerging later in the season tend to be smaller. The reduction in body size under the predicted global warming scenario tested here has the potential to affect trophic interactions.

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Cite this as

Rungtip Wonglersak; Phillip Fenberg; Peter Langdon; Stephen J Brooks; Benjamin Price (2020). Mesocosms [Data set]. Natural History Museum. https://doi.org/10.5519/0003569
Retrieved: 03:14 17 Sep 2026 (UTC) BibTeX

Additional Info

Field Value
Affiliation 1. Department of Ocean and Earth Sciences, University of Southampton, Southampton, SO14 3ZH, United Kingdom, 2. Department of Life Sciences, Natural History Museum, London, SW7 5BD, United Kingdom, 3. Department of Geography and Environment, University of Southampton, Southampton, SO17 1BJ, United Kingdom
Primary contributors
Wonglersak, Rungtip ( 0000-0002-0583-8334);
Fenberg, Phillip ( 0000-0003-4474-176X);
Langdon, Peter ( 0000-0003-2724-2643);
Brooks, Stephen J;
Price, Benjamin ( 0000-0001-5497-4087)
Other contributors
Temporal extent 2017-2018
تاریخ آخرین به‌روز رسانی 24 ژوئن 2020
Last resource update 24 ژوئن 2020 (Datasheet-Procladius crassinervis (wing length).csv)
Created 17 فوریهٔ 2020
لایسنس Creative Commons Attribution