Increases distance of sound transmission from newly available breeding sites. Females arrive simultaneously, rather than over long period of time. Result is intense scramble competition by males for females, rather than female choice. Eggs may hatch in 2-3 days. Larvae may metamorphose in 1-2 months.
Timing depends on temperature, food, and crowding.
Respond by metamorphosing at smaller size if pond drying occurs. Delay metamorphosis if pond remains stable, grow to larger size. Cannibalistic forms have highly modified mouth parts, specialize on other larvae.