Mechanisms of reproductive allocation as drivers of developmental plasticity in reptiles

James U. Van Dyke, Oliver W. Griffith

    Research output: Contribution to journalReview articlepeer-review

    15 Citations (Scopus)

    Abstract

    Developmental plasticity in offspring phenotype occurs as a result of the environmental conditions embryos experience during development. The nutritional environment provided to a fetus is an important source of developmental plasticity. Reptiles are a particularly interesting system to study this plasticity because of their varied routes of maternal nutrient allocation to reproduction. Most reptiles provide their offspring with all or most of the nutrients they require in egg yolk (lecithotrophy) while viviparous reptiles also provide their offspring with nutrients via a placenta (placentotrophy). We review the ways in which both lecithotrophy and placentotrophy can lead to differences in the nutrients embryonic reptiles receive, and discuss how these differences lead to developmental plasticity in offspring phenotype. We finish by reviewing the ecological and conservation consequences of nutritional-driven developmental plasticity in reptiles. If nutritional-driven developmental plasticity has fitness consequences, then understanding the basis of this plasticity has exciting potential to identify how reptile recruitment is affected by environmental changes in food supply. Such knowledge is critical to our ability to protect taxa threatened by environmental change.
    Original languageEnglish
    Pages (from-to)275-286
    Number of pages12
    JournalJournal of Experimental Zoology Part A: Ecological and Integrative Physiology
    Volume329
    Issue number6-7
    Early online dateMay 2018
    DOIs
    Publication statusPublished - Jul 2018

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