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Integrating function across marine life cycles.

Robert D Podolsky1, Amy L Moran

  • 1Grice Marine Laboratory, College of Charleston 205 Fort Johnson, Charleston, SC 29412, USA.

Integrative and Comparative Biology
|June 16, 2011
PubMed
Summary
This summary is machine-generated.

Complex life cycles feature distinct stages with varying autonomy. Understanding how these stages integrate is crucial for life-history theory and predicting evolutionary responses to selection.

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Area of Science:

  • Evolutionary Biology
  • Developmental Biology
  • Life-History Theory

Background:

  • Complex life cycles consist of discrete stages with diverse forms and functions.
  • Transitions between life stages can vary in nature and magnitude, influencing stage autonomy.
  • Stage autonomy impacts how processes in one life-history stage affect performance and selection in others.

Purpose of the Study:

  • To investigate the functional integration across discrete stages in complex life cycles.
  • To define research questions addressing stage autonomy, implications for life-history theory, and long-term consequences of experience carryover.
  • To highlight how functionally coupled stages lead to a more integrated life cycle evolution.

Main Methods:

  • Identification of stage roles and transition types within life histories.
  • Analysis of structural, genetic/epigenetic, and experiential forces driving stage integration.
  • Distinction of persistence, amplification, and compensation scenarios for experience carryover across stages.

Main Results:

  • Defined the extent to which life-history stages function as autonomous units based on transition types and integrating forces.
  • Illustrated implications of stage integration for traditional life-history theory, which often isolates stages.
  • Differentiated carryover of state from carryover into processes using persistence, amplification, and compensation models.

Conclusions:

  • Life-history stages can be functionally coupled, leading to integrated responses to selection.
  • Understanding stage autonomy and experience carryover is essential for a comprehensive view of life cycle evolution.
  • This framework advances life-history theory by considering inter-stage dynamics and their evolutionary consequences.