1968; low density; cf. Table 1 1 1
Sample
number
138
and date
8July
139
10 July
140
14 July
Summaryof
141
samples
15 July
138-141
-
-
-
-
4
-
-
-
-
hatched
9
30
76.0
20
26
92.6
29
29
100
33
36
94-7
120
89.6
-
10
7.5
parasitized
8
9
22.6
1
1
3.7
-
2
1-5
unfertilized
-
1
2.6
-
1
3.7
-
- -
1
1
2.6
1
0.7
-
-
-
1
2.6
1
0.7
empty
embryo dead
unhatched
23
-
-
6
-
-
-
- - -
-
-
- - -
-
-
-
- -
-
-
-
-
- -
-
-
Sum
40
40
27
27
29
29
38
38
134
9 = number of egga 88 found in the samples;
R = number after rearing of unhatched eggs in glass tubes;
% = peroentages of preceding column R. See the text.