Show simple item record Ankutowicz, Eric J. Laird, Robert A. 2018-06-21T21:56:09Z 2018-06-21T21:56:09Z 2018
dc.identifier.citation Ankutowicz, E.J., & Laird, R.A. (2018). Offspring of older parents are smaller-but no less bilaterally symetrical-than offspring of younger parents in the aquatic plant Lemna turionifera. Ecology and Evolution, 8, 2018. doi:10.1002/ece3.3697 en_US
dc.description Open access provided under the terms of the Creative Commons Attribution License en_US
dc.description.abstract Offspring quality decreases with parental age in many taxa, with offspring of older parents exhibiting reduced life span, reproductive capacity, and fitness, compared to offspring of younger parents. These “parental age effects,” whose consequences arise in the next generation, can be considered as manifestations of parental senescence, in addition to the more familiar age- related declines in parent- generation survival and reproduction. Parental age effects are important because they may have feedback effects on the evolution of demographic trajectories and longevity. In addition to altering the timing of offspring life-history milestones, parental age effects can also have a negative impact on offspring size, with offspring of older parents being smaller than offspring of younger parents. Here, we consider the effects of advancing parental age on a different aspect of offspring morphology, body symmetry. In this study, we followed all 403 offspring of 30 parents of a bilaterally symmetrical, clonally reproducing aquatic plant species, Lemna turionifera, to test the hypothesis that successive offspring become less symmetrical as their parent ages, using the “Continuous Symmetry Measure” as an index. Although successive offspring of aging parents older than one week became smaller and smaller, we found scant evidence for any reduction in bilateral symmetry en_US
dc.language.iso en_US en_US
dc.publisher Wiley en_US
dc.subject Aging en_US
dc.subject Araceae en_US
dc.subject Asymmetry en_US
dc.subject Lemnoideae en_US
dc.subject Mirror image en_US
dc.subject Shape analysis en_US
dc.subject Parental age effects
dc.subject Lemna turionifera
dc.subject Offspring
dc.subject Body symmetry
dc.subject.lcsh Plants--Reproduction
dc.subject.lcsh Symmetry (Biology)
dc.title Offspring of older parents are smaller-but no less bilaterally symmetrical-than offspring of younger parents in the aquatic plant Lemna turionifera en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Biological Sciences en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Lethbridge en_US

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