Abstract
A population of the common Australian frog Crinia signifera Girard, 1853 was studied over a 3.5 year
period at a site near Bridgewater in South Australia. In this population, C. signifera are long lived and
iteroparous, with some individual males and females participating in at least four consecutive breeding
seasons. Adult survivorship was high (up to about 70% per annum) for both males and females.
Metamorphosis occurred from October to January and some individuals reached maturity within a year.
However, most individuals reached maturity in the second breeding season following metamorphosis.
Survival of juveniles ranged from 5 to 72% per annum, with individuals emerging early having higher
survival than those that metamorphosed late. However, it was not clear whether increased survival was
associated with early emergence or large size at emergence. The data support the argument that iteroparity
is favoured in situations in which preadult mortality is higher and less predictable than adult mortality.
Subject
Management, Monitoring, Policy and Law,Ecology, Evolution, Behavior and Systematics
Cited by
26 articles.
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