From The Conversation · Claire Therese Hemingway · · 1m
Too many male frogs overwhelm female choice
Female gray tree frogs struggle to pick mates when too many males call.
In brief
Female gray tree frogs struggle to pick mates when too many males call. Female gray tree frogs choose less optimal mates when faced with too many male mating calls due to cognitive overload. Originally reported by The Conversation.
Choice overload in frogs
Female gray tree frogs face decision overload when too many male mating calls are presented simultaneously.
Lab experiment setup
Researchers played one attractive call and three to seven less attractive calls to 60 female frogs in a lab.
Female decision decline
As distractor calls increased, females took longer to choose, made more errors, and defered decisions within 10 minutes.
Cognitive limits over masking
The decline wasn’t due to energetic masking but female cognitive limits preventing optimal mate selection.
Mating consequences
Females may mate with less attractive males, passing on less desirable traits to offspring.
Male strategy shift
Less attractive males might benefit from joining larger choruses where females struggle to discriminate.
The essence
Female gray tree frogs choose less optimal mates when faced with too many male mating calls due to cognitive overload.
