Integrating animal temperament within ecology and evolution.

Area of Science:

• Behavioral Ecology
• Evolutionary Biology
• Animal Psychology

Background:

• Individual behavioral differences (temperament) are repeatable across time and situations in animals.
• Temperament traits like boldness, exploration, and sociality are pervasive but understudied in ecological and evolutionary contexts.
• Lack of standardized terminology and understanding of fitness links have hindered ecological temperament research.

Purpose of the Study:

• To propose studying animal temperament within an evolutionary ecology framework.
• To introduce a standardized terminology for ecological temperament research.
• To highlight the relevance of temperament to animal ecology and evolution.

Main Methods:

• Extensive literature reviews on temperament heritability and fitness.
• Development of a working terminology for ecological temperament studies.
• Identification of ecologically relevant measurement methods.

Main Results:

• Temperament traits are heritable and demonstrably linked to fitness.
• A proposed terminology categorizes traits into shyness-boldness, exploration-avoidance, activity, sociability, and aggressiveness.
• Ecological and evolutionary topics like phenotypic plasticity and conservation biology benefit from temperament considerations.

Conclusions:

• Temperament is a critical, yet overlooked, factor in animal ecology and evolution.
• A unified terminology and evolutionary ecology approach are essential for advancing temperament research.
• Understanding temperament is vital for addressing conservation, invasion biology, and other ecological challenges.