Visual reinforcement in the female Siamese fighting fish, Betta splendens

Area of Science:

• Behavioral science
• Ethology
• Animal behavior

Background:

• Operant conditioning in Betta splendens (Bettas) has primarily focused on males.
• Ethological studies indicate female Bettas exhibit aggressive behaviors similar to males.
• Mirror-image reinforcement is a documented phenomenon in male Bettas.

Purpose of the Study:

• To investigate the generality of mirror-image reinforcement in female Bettas.
• To determine if female Bettas acquire and maintain behaviors through mirror presentation.
• To compare operant conditioning responses between male and female Bettas.

Main Methods:

• Four experiments were conducted using female Bettas.
• A ring-swimming task was used as the operant behavior.
• Mirror presentation served as the reinforcer for successful task completion.

Main Results:

• Female Bettas acquired and maintained ring-swimming behavior when reinforced with immediate mirror presentations.
• Behavior was also acquired and maintained with delayed mirror presentations.
• Extinction procedures and response-independent mirror presentations failed to maintain responding, confirming the reinforcing properties of the mirror.

Conclusions:

• Mirror-image reinforcement is effective in female Bettas, generalizing findings from males.
• This study highlights the complementarity between behavioral ecology and the experimental analysis of behavior.
• Behavioral plasticity in Betta splendens extends to sex differences in operant conditioning.