Offspring of older parents are smaller-but no less bilaterally symmetrical-than offspring of younger parents in the aquatic plant Lemna turionifera

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dc.contributor.authorAnkutowicz, Eric J.
dc.contributor.authorLaird, Robert A.
dc.date.accessioned2018-06-21T21:56:09Z
dc.date.available2018-06-21T21:56:09Z
dc.date.issued2018
dc.descriptionOpen access provided under the terms of the Creative Commons Attribution Licenseen_US
dc.description.abstractOffspring 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 symmetryen_US
dc.description.peer-reviewYesen_US
dc.identifier.citationAnkutowicz, 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/ece3.3697en_US
dc.identifier.urihttps://hdl.handle.net/10133/5134
dc.language.isoen_USen_US
dc.publisherWileyen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.subjectAgingen_US
dc.subjectAraceaeen_US
dc.subjectAsymmetryen_US
dc.subjectLemnoideaeen_US
dc.subjectMirror imageen_US
dc.subjectShape analysisen_US
dc.subjectParental age effects
dc.subjectLemna turionifera
dc.subjectOffspring
dc.subjectBody symmetry
dc.subject.lcshPlants--Reproduction
dc.subject.lcshSymmetry (Biology)
dc.titleOffspring of older parents are smaller-but no less bilaterally symmetrical-than offspring of younger parents in the aquatic plant Lemna turioniferaen_US
dc.typeArticleen_US
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