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The plastic fly: the effect of sustained fluctuations in adult food supply on life-history traits.

van den Heuvel J, Zandveld J, Mulder M, Brakefield PM, Kirkwood TB, Shanley DP, Zwaan BJ - J. Evol. Biol. (2014)

Bottom Line: Remarkably, both the manner and extent to which life-history traits varied in relation to food depended on whether flies initially experienced high or low food after eclosion.We therefore conclude that the expression of life-history traits in adult life is affected not only by adult plasticity, but also by early adult life experiences.This is an important but often overlooked factor in studies of life-history evolution and may explain variation in life-history experiments.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Genetics, Wageningen University, Wageningen, The Netherlands; Evolutionary Biology Group, Leiden University, Leiden, The Netherlands; Institute for Ageing and Health, Newcastle University, Campus for Aging and Vitality, Newcastle Upon Tyne, UK.

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Survival curves for individual flies for the six food treatments, indicated by lines with different colours.
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fig04: Survival curves for individual flies for the six food treatments, indicated by lines with different colours.

Mentions: The hazard ratio for mortality was the highest for the CL flies, whereas it was the lowest for the CH flies (Table2, Fig.4; Z = 5.62, P < 0.001). The fast yoyo treatment flies tended to have a lower hazard ratio compared to the slow yoyo treatment, which was significant when the FYL flies were compared to the SYL flies (Table2, Z = −2.55, P < 0.05). The FYH (Z = 2.15, P < 0.05) and SYH flies (Z = 2.678, P < 0.01) had significantly lower survival rates compared to the CH, but significantly higher than the CL. Thus, these flies had a significant and intermediate survival compared to the controls, whereas those started on low food were only significantly different compared to one of the controls (Table2). These results are in line with the intermediate survival rates for ‘yoyo’ flies in Exp #1, including the higher resemblance to the CH flies.


The plastic fly: the effect of sustained fluctuations in adult food supply on life-history traits.

van den Heuvel J, Zandveld J, Mulder M, Brakefield PM, Kirkwood TB, Shanley DP, Zwaan BJ - J. Evol. Biol. (2014)

Survival curves for individual flies for the six food treatments, indicated by lines with different colours.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4263262&req=5

fig04: Survival curves for individual flies for the six food treatments, indicated by lines with different colours.
Mentions: The hazard ratio for mortality was the highest for the CL flies, whereas it was the lowest for the CH flies (Table2, Fig.4; Z = 5.62, P < 0.001). The fast yoyo treatment flies tended to have a lower hazard ratio compared to the slow yoyo treatment, which was significant when the FYL flies were compared to the SYL flies (Table2, Z = −2.55, P < 0.05). The FYH (Z = 2.15, P < 0.05) and SYH flies (Z = 2.678, P < 0.01) had significantly lower survival rates compared to the CH, but significantly higher than the CL. Thus, these flies had a significant and intermediate survival compared to the controls, whereas those started on low food were only significantly different compared to one of the controls (Table2). These results are in line with the intermediate survival rates for ‘yoyo’ flies in Exp #1, including the higher resemblance to the CH flies.

Bottom Line: Remarkably, both the manner and extent to which life-history traits varied in relation to food depended on whether flies initially experienced high or low food after eclosion.We therefore conclude that the expression of life-history traits in adult life is affected not only by adult plasticity, but also by early adult life experiences.This is an important but often overlooked factor in studies of life-history evolution and may explain variation in life-history experiments.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Genetics, Wageningen University, Wageningen, The Netherlands; Evolutionary Biology Group, Leiden University, Leiden, The Netherlands; Institute for Ageing and Health, Newcastle University, Campus for Aging and Vitality, Newcastle Upon Tyne, UK.

Show MeSH
Related in: MedlinePlus