Rapid life-history evolution in a wild Daphnia pulex population in response to novel size-dependent predation

16311 9 89571 2 257593 document 89571 Wathne2020_Article_RapidLife-historyEvolutionInAW.pdf application/pdf 5ae9dea3eda21523a1a0697cf96467dc MD5 1021910 2020-02-24 09:16:38 https://pure.iiasa.ac.at/id/eprint/16311/1/Wathne2020_Article_RapidLife-historyEvolutionInAW.pdf 16311 1 1 application/pdf text en public cc_by_4

Wathne2020_Article_RapidLife-historyEvolutionInAW.pdf

published 89572 1 257599 document 89572 indexcodes.txt text/x-asm b2ef21ee641bebcff66c0cd712e6ac71 MD5 12636 2020-02-24 09:26:23 https://pure.iiasa.ac.at/id/eprint/16311/2/indexcodes.txt 16311 2 2 text/x-asm other Generate index codes conversion from text to indexcodes en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/89571 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/89571 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/89571 archive 353 disk0/00/01/63/11 2020-02-24 09:18:47 2021-08-27 17:32:39 2020-02-24 09:18:47 article show Wathne I. Enberg K. Jensen K.H. Heino M. 7602 0000-0003-2928-3940 Rapid life-history evolution in a wild Daphnia pulex population in response to novel size-dependent predation pub prog_eep Contemporary evolution; Genetically-based phenotypic changes; Life-history evolution The effect of size-selective predation on prey communities and their traits is well documented, but the relative roles of genetic adaptation and phenotypic plasticity continue to be debated. We looked for evidence of genetic adaption in a population of the water flea Daphnia pulex that faced a novel, introduced predator, Eurasian perch (Perca fluviatilis), selectively preying upon large zooplankton. Theory predicts adaptive changes towards a faster life history. We compared growth, age and length at maturation, egg size, and fecundity of two groups of clones kept in common-garden conditions, 13 clones isolated at around the time of the perch introduction and 14 isolated 3 years after. All animals were photographed daily and observed every third hour to detect maturation and measure the clutch size. Post-introduction clones matured earlier, but this was an indirect response triggered by genetic change in growth: post-introduction clones had faster growth prior to maturation than pre-introduction ones, reaching earlier the size threshold for maturation, but the threshold itself remained unchanged. Post-introduction clones showed also higher clutch size for 2nd and 3rd clutch, and slower growth from maturation (first appearance of eggs) to the moult after the release of the first clutch. Egg size did not differ between the periods. The experiment shows how life-history responses to predation involve multiple interlinked traits and both direct and indirect genetic responses. 2020-02-04 published Springer 10.1007/s10682-020-10031-7 122 public Evolutionary Ecology TRUE 0269-7653 FALSE no info:eu-repo/semantics/article