%0 Journal Article %1 joschinski_coping_2015 %A Joschinski, Jens %A Krauss, Jochen %A Hovestadt, Thomas %D 2015 %J PeerJ %K Gent, SFB\_Timing %P e1103 %R https://dx.doi.org/10.7717/peerj.1103 %T Coping with shorter days: Do phenology shifts constrain aphid fitness? %V 3 %X Climate change has the potential to alter seasonal timing and thus lead organisms to live under different day lengths than in the past. To examine possible fitness consequences of shifts in seasonal timing, we recorded life-history traits of asexual morphs of the aphid Acyrthosiphon pisum under short and long days and under two realistically fluctuating temperature regimes with means differing by 2°C. In addition we measured the population growth of aphids on their host plant Pisum sativum. We show that short days reduce fecundity and the length of the reproductive period of aphids. Nevertheless this does not translate to differences at the population level, because fitness costs only become apparent late in the individual’s life. Warm temperature shortens the development time of aphids by 0.7 days/°C, leading to faster generation times, while life span is reduced by 1.4 days/°C in high compared to low temperature regimes. However, warm temperature does not reduce the fecundity of aphids. We conclude that day length changes cause only relatively mild costs, which may not decelerate the increase in pest status due to climate change.

@article{joschinski_coping_2015, abstract = {Climate change has the potential to alter seasonal timing and thus lead organisms to live under different day lengths than in the past. To examine possible fitness consequences of shifts in seasonal timing, we recorded life-history traits of asexual morphs of the aphid Acyrthosiphon pisum under short and long days and under two realistically fluctuating temperature regimes with means differing by 2°C. In addition we measured the population growth of aphids on their host plant Pisum sativum. We show that short days reduce fecundity and the length of the reproductive period of aphids. Nevertheless this does not translate to differences at the population level, because fitness costs only become apparent late in the individual’s life. Warm temperature shortens the development time of aphids by 0.7 days/°C, leading to faster generation times, while life span is reduced by 1.4 days/°C in high compared to low temperature regimes. However, warm temperature does not reduce the fecundity of aphids. We conclude that day length changes cause only relatively mild costs, which may not decelerate the increase in pest status due to climate change.}, added-at = {2016-09-26T15:45:29.000+0200}, author = {Joschinski, Jens and Krauss, Jochen and Hovestadt, Thomas}, biburl = {https://www.bibsonomy.org/bibtex/2e0e89e76326e4a33ad98d7e3f4f347d1/teegroup}, doi = {https://dx.doi.org/10.7717/peerj.1103}, file = {1103.pdf:/media/thomas/USBArbeit/zotero/storage/D9BS4BPS/1103.pdf:application/pdf}, interhash = {78c316b462bd8880edeea43c8560cd82}, intrahash = {e0e89e76326e4a33ad98d7e3f4f347d1}, journal = {PeerJ}, keywords = {Gent, SFB\_Timing}, pages = {e1103}, timestamp = {2016-09-26T15:45:29.000+0200}, title = {Coping with shorter days: {Do} phenology shifts constrain aphid fitness?}, volume = 3, year = 2015 }