64
A. R. MAIN
Intra-popuhtion c m n p r i s m : Total populations and recruitment:
all populations are similar from year to year. Differential survival of
frogs: all populations show a decline in frequency of frogs of the lyrate
morph between March and November 1961. When these results are
poled the larger sample shows the change to be significant almost at
the p
1959
1960
19Cl
1962
n
ll I963 {
1964
FIG. 6. Bas diagrams showing frequency of juvenih, adults and polymorphs rn percent
of total sample for three populetions of CtirM. iMisnifcra on Rottnest Island during
y e w 1969 to 1964. (a) Lighthouse Seep; (b) Negri Seep; (0) Bagdad Seep. Left-hand
k-Ridgea phenotype; right-hsnd bar-Lyrste phenot.ype. Juveniles ( J) ripper part,
Adults ( A ) lower pert of emch bar.