Table 1. SUMMARY OF OFFSPRING SEX RATIOS FROM STUDIES USING CONSTANT 
TEMPERATURES OF INCUBATION 
The number of males and females presented in this table were, in some cases, calculated from 
percentages provided in the sources indicated. In other cases, percentages were calculated from 
sample sizes. Question marks (?) denote data that were not presented in the source. 
Males Females 
# eggs/# 
Taxa Temp (C) # 63 (%) #29 (%) — clutches Comments Source 
TESTUDINES 
CRYPTODIRA 
CARETTOCHELYIDAE 
Carettochelys insculpta 
28 12(100) O¢ 0) 12/3 Eggs in 2nd group at 98 
30 20(100) Oc 0) 24/5 32° were collected 
32 Oc 0) 9(100) 12/3 _ late in development 
32. 23( 50) 23( 50) 46/5 
CHELONIIDAE 
Caretta caretta 
26 20(100) Oc 0) 20/5 89% hatching success 38 
32 O( =O) 20(100) 20/5 83% hatching success 
25 2(100) O( 0) 10/1 53 
26 2(100) O¢ 0) 10/1 
oF fi 2( 80) 2( 20) 10/1 
29 2( 50) ?( 50) 10/1 
30.5 O( 0) 2(100) 10/1 
32 O( 0) 2(100) 10/1 
25 8(100) O¢ 0) 10/1 2 unsexable 54 
25 7(100) O¢ 0) 10/1 
26 16(100) O( 0) 16/2 
26 6( 67) 3¢733) 10/1 
26 10(100) O( 0) 10/1 
26 7( 88) G2) 10/1 1 unsexable 
27 8( 80) 2( 20) 10/1 
Di 6( 86) 1( 14) 10/1 2 unsexable 
27.5 5( 56) 4( 44) 10/1 
205 3( 30) 7( 70) 10/1 
DTS 8( 80) 2( 20) 10/1 
28 4( 44) 5( 56) 10/1 
28 2(100) O( 0) 10/1 
29 1( 11) 8( 89) 10/1 
