Life-history plasticity in female threespine stickleback

Area of Science:

• Evolutionary biology
• Ecology
• Genetics

Background:

• Threespine stickleback (Gasterosteus aculeatus) show adaptive radiation, with significant divergence in behavior and morphology.
• Life-history divergence is well-studied, but plasticity's role in these traits remains less understood.
• Female reproductive traits are key to understanding life-history plasticity.

Purpose of the Study:

• To review and synthesize current knowledge on life-history plasticity in female threespine stickleback.
• To examine plasticity in age/size at maturation, reproductive effort, egg size, and clutch size.
• To consider plasticity within an ontogenetic framework and explore potential environmental cues.

Main Methods:

• Literature review synthesizing laboratory and field studies on threespine stickleback.
• Analysis of plasticity in four key reproductive traits.
• Exploration of potential environmental cues and costs/benefits of plasticity.

Main Results:

• Life-history plasticity in female threespine stickleback is evident across multiple reproductive traits.
• Laboratory and field studies often yield different insights into plasticity.
• Potential cues and trade-offs associated with expressed plasticity are identified.

Conclusions:

• Life-history plasticity is a crucial factor in threespine stickleback adaptive radiation.
• Understanding plasticity requires considering ontogenetic and environmental contexts.
• Further research is needed to fully elucidate the role of plasticity in stickleback evolution.