lCf'i>l.Oc;Y, SYSTLMATI('8 A N D HVOLUTION OF AUSTRALIAN FROQS 61
EHtirnatm of population eize have been poseible for Crinia signifera
cm Kottiieet Inland where discrete populations at three localities have
been studied (Main, 1961, 1966~). The eetimatea of population were
made in March (pre-breeding) and November (post-breeding) and the
changes iri size of the extensively studied populations at Lighthouse
Soak, Rottnest Island, are shown in Table VI. In this species juveniles
grow to bexual maturity in one year and it haa been possible to age
specimens as juvenile or adult (Main, 1966c, Fig. l), whioh has allowed
the post-breeding sample to be divided into them wtegories by using
TABLE V I
Crinia inslgnifers - L i g h t b e Soak, R d t w t Island - E&imutes of population size and age structure and frequency of p k d y p e in polnJati0.n sample
(data from Main, 1965~)
~
~
~~
~
~~~
~
-~
.
YeIU
PopulaComposition of Sample
Character of
and
tion
Adult
Juvenile
winter w o n in
Season
EetiRidged Lyrate Ridged Lyrate relationtoaverege
mete
(1 in. = 2 5 4 m )
1955
1959
March
November
1960
March
November
1961
March
November
1962
March
November
1963
March
November
1964
Murch
Novembcr
1021
126
49
261
38
41
380
63
22
680
46
34
702
12
36
3
13
1341
11
114
50
11
24
69
24
27
30
10
36
3
7
9
16
27
161
73
124
364
14
22
161
60
95
26 1
Warmer, more sunshine, leea nrinfd
(-10 in.)
Colder, more sunshine, lees rainfall
( - 8 in.)
Warmer, more sunshine. lesa midall
(-4 in.)
Warmer, average
sunshine, less rainfall
(-4 in.)
Warm, leas sunmore rainfall
(+4.6 in.)
Average temperature and average
sunshine, more rsinfall
(+3.3 in.)
shine (-165 h),
EHtirnatm of population eize have been poseible for Crinia signifera
cm Kottiieet Inland where discrete populations at three localities have
been studied (Main, 1961, 1966~). The eetimatea of population were
made in March (pre-breeding) and November (post-breeding) and the
changes iri size of the extensively studied populations at Lighthouse
Soak, Rottnest Island, are shown in Table VI. In this species juveniles
grow to bexual maturity in one year and it haa been possible to age
specimens as juvenile or adult (Main, 1966c, Fig. l), whioh has allowed
the post-breeding sample to be divided into them wtegories by using
TABLE V I
Crinia inslgnifers - L i g h t b e Soak, R d t w t Island - E&imutes of population size and age structure and frequency of p k d y p e in polnJati0.n sample
(data from Main, 1965~)
~
~
~~
~
~~~
~
-~
.
YeIU
PopulaComposition of Sample
Character of
and
tion
Adult
Juvenile
winter w o n in
Season
EetiRidged Lyrate Ridged Lyrate relationtoaverege
mete
(1 in. = 2 5 4 m )
1955
1959
March
November
1960
March
November
1961
March
November
1962
March
November
1963
March
November
1964
Murch
Novembcr
1021
126
49
261
38
41
380
63
22
680
46
34
702
12
36
3
13
1341
11
114
50
11
24
69
24
27
30
10
36
3
7
9
16
27
161
73
124
364
14
22
161
60
95
26 1
Warmer, more sunshine, leea nrinfd
(-10 in.)
Colder, more sunshine, lees rainfall
( - 8 in.)
Warmer, more sunshine. lesa midall
(-4 in.)
Warmer, average
sunshine, less rainfall
(-4 in.)
Warm, leas sunmore rainfall
(+4.6 in.)
Average temperature and average
sunshine, more rsinfall
(+3.3 in.)
shine (-165 h),