Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna

Abstract Reduced body size and accelerated life cycle due to warming are considered major ecological responses to climate change with fitness costs at the individual level. Surprisingly, we know little about how relevant ecological factors can alter these life history trade‐offs and their consequenc...

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Autores principales:	Gustavo S. Betini, Xueqi Wang, Tal Avgar, Matthew M. Guzzo, John M. Fryxell
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2020
Materias:	Chlorella vulgaris climate change Daphnia magna demographic rates life history lifetime reproductive success Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/17f7798a5fe24a0bbae46c44043ae88a
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spelling	oai:doaj.org-article:17f7798a5fe24a0bbae46c44043ae88a2021-11-04T13:06:09ZFood availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna2045-775810.1002/ece3.5925https://doaj.org/article/17f7798a5fe24a0bbae46c44043ae88a2020-01-01T00:00:00Zhttps://doi.org/10.1002/ece3.5925https://doaj.org/toc/2045-7758Abstract Reduced body size and accelerated life cycle due to warming are considered major ecological responses to climate change with fitness costs at the individual level. Surprisingly, we know little about how relevant ecological factors can alter these life history trade‐offs and their consequences for individual fitness. Here, we show that food modulates temperature‐dependent effects on body size in the water flea Daphnia magna and interacts with temperature to affect life history parameters. We exposed 412 individuals to a factorial manipulation of food abundance and temperature, tracked each reproductive event, and took daily measurements of body size from each individual. High temperature caused a reduction in maximum body size in both food treatments, but this effect was mediated by food abundance, such that low food conditions resulted in a reduction of 20% in maximum body size, compared with a reduction of 4% under high food conditions. High temperature resulted in an accelerated life cycle, with pronounced fitness cost at low levels of food where only a few individuals produced a clutch. These results suggest that the mechanisms affecting the trade‐off between fast growth and final body size are food‐dependent, and that the combination of low levels of food and high temperature could potentially threaten viability of ectotherms.Gustavo S. BetiniXueqi WangTal AvgarMatthew M. GuzzoJohn M. FryxellWileyarticleChlorella vulgarisclimate changeDaphnia magnademographic rateslife historylifetime reproductive successEcologyQH540-549.5ENEcology and Evolution, Vol 10, Iss 2, Pp 756-762 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chlorella vulgaris climate change Daphnia magna demographic rates life history lifetime reproductive success Ecology QH540-549.5
spellingShingle	Chlorella vulgaris climate change Daphnia magna demographic rates life history lifetime reproductive success Ecology QH540-549.5 Gustavo S. Betini Xueqi Wang Tal Avgar Matthew M. Guzzo John M. Fryxell Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
description	Abstract Reduced body size and accelerated life cycle due to warming are considered major ecological responses to climate change with fitness costs at the individual level. Surprisingly, we know little about how relevant ecological factors can alter these life history trade‐offs and their consequences for individual fitness. Here, we show that food modulates temperature‐dependent effects on body size in the water flea Daphnia magna and interacts with temperature to affect life history parameters. We exposed 412 individuals to a factorial manipulation of food abundance and temperature, tracked each reproductive event, and took daily measurements of body size from each individual. High temperature caused a reduction in maximum body size in both food treatments, but this effect was mediated by food abundance, such that low food conditions resulted in a reduction of 20% in maximum body size, compared with a reduction of 4% under high food conditions. High temperature resulted in an accelerated life cycle, with pronounced fitness cost at low levels of food where only a few individuals produced a clutch. These results suggest that the mechanisms affecting the trade‐off between fast growth and final body size are food‐dependent, and that the combination of low levels of food and high temperature could potentially threaten viability of ectotherms.
format	article
author	Gustavo S. Betini Xueqi Wang Tal Avgar Matthew M. Guzzo John M. Fryxell
author_facet	Gustavo S. Betini Xueqi Wang Tal Avgar Matthew M. Guzzo John M. Fryxell
author_sort	Gustavo S. Betini
title	Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
title_short	Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
title_full	Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
title_fullStr	Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
title_full_unstemmed	Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna
title_sort	food availability modulates temperature‐dependent effects on growth, reproduction, and survival in daphnia magna
publisher	Wiley
publishDate	2020
url	https://doaj.org/article/17f7798a5fe24a0bbae46c44043ae88a
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Food availability modulates temperature‐dependent effects on growth, reproduction, and survival in Daphnia magna

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