POTENTIAL FOR GENETIC SUPPRESSION OF INSECT POPULATIONS 



15 



Table 3. — Theoretical population and genotypic trends when native population of 

 2,000 insects (aa) is overflooded by 198,000 or 396,000 partiallv sterile 

 insects (AA) during narental, T± , F 2 , and F 3 generations. Matings between 

 partiallv sterile insects are assumed to yield no offspring 



Number 

 released 



Sterilitv Rate of Genera- 

 increase tion 



198, 000- 



Percent 



90 Fivefold — 



aa 



100 



30 



9 



3 



Aa 



Genot ype 



AA 



1,980 



1,133 



636 



355 



1,005 

 1,615 



2,005 



Total 



2,080 

 2,168 

 2,260 

 2,363 



198,000— 



80 — do— 



100 

 107 

 122 

 158 



3,960 

 4,280 

 4,978 

 6,625 



3,977 

 12,646 

 33,089 



4,060 



8,364 



17,746 



39,872 



198,000— 



90 



Tenfold 



200 

 235 

 322 

 590 



3,960 



4,697 



6,546 



12,255 



4,072 

 14,275 

 45,762 



4,160 



9,004 



21,143 



58,607 



198,000— 



80 



-do- 



200 



840 



3,991 



25,685 



7,920 



17,583 



53,351 



296,629 



15,977 

 110,806 

 813,595 



8,120 



34,400 



168,148 



1,135,904 



396,000— 



90 



Fivefold ' 



50 



14 



4 



1 



1,990 



1,066 



565 



298 



1,022 

 1,557 

 1,872 



2,040 

 2,102 

 2,126 

 2,171 



396,000— 



80 



—do— 



50 

 52 

 56 

 64 



3,980 

 4,141 

 4,477 

 5,211 



3,989 

 12,328 

 30,514 



4,030 



8,182 



16,861 



35,789 



396,000— 



90 



Tenfold 



101 

 109 

 129 

 178 



3,980 

 4,346 

 5,170 

 7,242 



4,038 

 13,116 

 35,955 



4,081 



8,493 



18,415 



43,375 



396,000— 



80 



— do— 



101 



412 



1,809 



9,786 



7,960 



16,800 



42,538 



173,314 



15,994 

 103,891 

 652,111 



8,061 



33,206 



148,238 



835,211 



