TABLE XI11
Estimates of Survival and Mortality Rates of Eggs
Categories
of eggs
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
hatched
63.0
58.7 39.6 81.9 48.0
68.4 69.2
21.8 89.6 69.1 69.4 66.0
77.3
63.7 40.7
parasitized
37.0
38.0 59.4 11.9 46.6
28.1 28.1 69.2
7.5 20.8 26.8
22.3
15.9 22.8 40.7
unfertilized
- 0.3 0.3
2.0
0.7
0.2
0.4
-
1.5
0.3
0.8
- 3.5 3.0
0.6
empty
-
2.5
0.7
2.5
3.6
1-9
2.0
8-7
0.7
4.0
0.8
9.0
1.9
9.7
17.2
embryo dead
-
0.5
- 1.7 1.1
1.4
0.3
0.3
0.7
5.7
2.3
2.7
1.4
0.8
0.8
Totals
378 3016
999
177
962
577 1042
643
134
489
526
659 1016 1173
484
The line “Totah” givea the numbera of egga collected in the fleld earnplea. The ratea are expreaaed in % of thwe totals.
Estimates of Survival and Mortality Rates of Eggs
Categories
of eggs
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
hatched
63.0
58.7 39.6 81.9 48.0
68.4 69.2
21.8 89.6 69.1 69.4 66.0
77.3
63.7 40.7
parasitized
37.0
38.0 59.4 11.9 46.6
28.1 28.1 69.2
7.5 20.8 26.8
22.3
15.9 22.8 40.7
unfertilized
- 0.3 0.3
2.0
0.7
0.2
0.4
-
1.5
0.3
0.8
- 3.5 3.0
0.6
empty
-
2.5
0.7
2.5
3.6
1-9
2.0
8-7
0.7
4.0
0.8
9.0
1.9
9.7
17.2
embryo dead
-
0.5
- 1.7 1.1
1.4
0.3
0.3
0.7
5.7
2.3
2.7
1.4
0.8
0.8
Totals
378 3016
999
177
962
577 1042
643
134
489
526
659 1016 1173
484
The line “Totah” givea the numbera of egga collected in the fleld earnplea. The ratea are expreaaed in % of thwe totals.