Hierarchical response models: new perspectives on development

Area of Science:

• Evolutionary biology
• Human ecology
• Reproductive science

Background:

• Hierarchical response models are key to understanding facultative adjustments in development and reproduction based on environmental cues.
• Existing models highlight the significance of energetic and local mortality conditions for reproductive development and timing.

Purpose of the Study:

• To support the Tier 2 model by integrating diverse empirical data.
• To propose incorporating analyses from industrial societies to identify mechanisms linking local mortality to reproductive schedules.

Main Methods:

• Review and synthesis of a vast array of empirical data.
• Application of hierarchical response models, including a Tier 2 model.
• Analysis of data from industrial societies.

Main Results:

• Empirical data supports the Tier 2 model's emphasis on energetic and local mortality environments.
• The study highlights the critical role of these environments in reproductive development and timing.

Conclusions:

• Existing hierarchical response models provide a framework for understanding environmental influences on reproduction.
• Further research incorporating industrial society data is needed to elucidate the mechanisms of local mortality's impact on reproductive schedules.