38 



MISC. PUB. 1178, U.S. DEPT. OF AGRICULTURE 



Table 20 Numbers in each generation in which conditional lethal 



of 2,000 insects (aabb) was overflooded in parental, F^, F 

 (AABB) with 2 conditional lethal traits 



cannot be expressed when native population 

 F3 generations by partially sterile insects 



Number Sterility Rate of 

 released increase 



Genera' 

 tion 



No offspring from matings be- 

 tween partially sterile insects 

 Survivors Total offspring 



Proportionate offspring from matings 



between partially sterile insects 

 Survivors Total offspring 



Percent 

 198,000-- 90 Fivefold- 



2,080 

 2,167 

 2,261 

 2,362 



11,881 

 23,911 

 43,048 

 84,979 



198,000-- 80 — do_. 



100 

 29 



10 



4,060 

 8,361 

 17,747 

 39,874 



43,264 

 142,302 

 486,161 

 ,020,164 



198,000-- 90 Tenfold- 



198,000-- 80 --do-- 





70 



33 



25 



l F 3 



200 



230 



373 



k 



1,219 



4,160 



9,006 



21,145 



58,609 



8,120 



34,589 



168,148 



1,135,905 



200 

 64 

 57 



123 



200 

 167 

 384 

 1031 



23,762 



85,569 



391,547 



2,870,101 



86,528 



559,111 



4,734,508 



46,207,951 



396,000-- 90 Fivefold -- 



2,040 

 2,082 

 2,125 

 2,172 



50 



21,740 

 45,037 

 81,212 

 152,918 



396,000— 80 — do — 



4,030 



8,182 



16,862 



35,787 



82,832 



274,150 



931,555 



3,847,779 



396,000-- 90 Tenfold -- 



100 



30 

 11 



4,080 



8,493 



18,416 



43,372 



100 

 27 

 21 

 39 



43,482 

 157,062 

 699,296 

 ,984,668 



396,000-- 80 —do — 



100 

 108 

 141 

 313 



8,060 

 33,206 

 148,237 

 835,211 



151 

 406 



165,664 



1,067,517 



8,984,915 



87,580,148 



Table 21. — Numbers in each generation in which conditional lethal traits cannot be expressed when native population of 

 2,000 insects (aaBBDD) was overflooded in parental, F, , Ft, and Ft generations by partially sterile insects 

 (AAbbdd) with 2 conditional lethal traits 



Number Sterility Rate of 

 released increase 



No offspring from matings be- 



Genera- tween partially sterile insects 



tion Survivors Total offspring 



Proportionate offspring from matings 



between partially sterile insects 

 Survivors Total offspring 



Percent 

 198,000-- 90 Fivefold— 



100 



12 



1 



2,080 

 2,166 

 2,260 

 2,362 



100 

 11 



11,881 

 23,911 

 43,050 

 81,936 



198,000-- 80 ..do.. 



100 

 38 



4,060 



8,365 



17,747 



39,873 



43,264 



142,301 



486,161 



2,020,176 



198,000-- 90 Tenfold— 



200 

 92 

 35 

 20 



4,160 



9,005 



21,144 



58,607 



200 

 84 

 58 

 84 



23,762 



85,571 



391,548 



2,870,116 



198,000-- 80 — do— 



200 



297 



382 



1,015 



8,120 



34,399 



168,148 



1,135,912 



200 

 215 

 326 

 642 



86,528 



559,111 



4,734,505 



46,207,856 



396,000-- 90 Fivefold. 



2,040 

 2,082 

 2,126 

 2,171 



21,740 

 45,036 

 81,210 

 152,920 



396,000— 80 — do- 



4,030 



8,182 



16,861 



35,788 



82,832 

 274,150 

 931,557 

 ,847,777 



396,000-- 90 Tenfold _ 



101 



39 

 10 

 3 



4,081 



8,494 



18,414 



43,374 



101 

 35 



20 

 23 



43,482 



157,060 



699,296 



4,984,654 



396,000-- 80 — do — 



101 

 138 

 133 

 222 



8,060 

 33,206 

 148,237 

 835,208 



101 



99 



133 



220 



165,663 



1,067,514 



8,984,898 



87,579,904 



