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Review
. 2019 Apr 15;374(1770):20180122.
doi: 10.1098/rstb.2018.0122.

Developmental plasticity as adaptation: adjusting to the external environment under the imprint of maternal capital

Jonathan C K Wells  1
Affiliations
Review

Developmental plasticity as adaptation: adjusting to the external environment under the imprint of maternal capital

Jonathan C K Wells. Philos Trans R Soc Lond B Biol Sci. .

Abstract

Plasticity is assumed to enable beneficial adjustment to the environment. In this context, developmental plasticity is generally approached within a two-stage framework, whereby adjustments to ecological cues in stage 1 are exposed to selection in stage 2. This conceptual approach may have limitations, because in species providing parental investment, particularly placental mammals such as humans, initial adjustments are not to the environment directly, but rather to the niche generated by parental phenotype (in mammals, primarily that of the mother). Only as maternal investment is withdrawn is the developing organism exposed directly to prevailing ecological conditions. A three-stage model may therefore be preferable, where developmental trajectory first adjusts to maternal investment, then to the external environment. Each offspring experiences a trade-off, benefitting from maternal investment during the most vulnerable stages of development, at the cost of exposure to investment strategies that maximize maternal fitness. Maternal life-history trade-offs impact the magnitude and schedule of her investment in her offspring, generating lifelong effects on traits related to health outcomes. Understanding the imprint of maternal capital on offspring is particularly important in species demonstrating social hierarchy. Interventions targeting maternal capital might offer new opportunities to improve health outcomes of both mother and offspring. This article is part of the theme issue 'Developing differences: early-life effects and evolutionary medicine'.

Keywords: adaptation; developmental plasticity; life-history theory; parental investment; parent–offspring conflict.

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Conflict of interest statement

I declare I have no competing interests.

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