368 



Journal of Agricultural Research 



Vol. Ill, No. 5 



they cease to oviposit. Fly No. 9 in Table II is an exception, as she de- 

 posited but 3 eggs in one puncture during her life of 68 days and lived 

 without ovipositing for 35 days before she died. The data in Table II 

 give the capacity for oviposition possessed by females up to 18 weeks 

 of age. Those in Table III show that this capacity is fairly well main- 

 tained by certain females at least during the fifth month after emergence. 

 Thus fly No. 5 of Table II deposited on an average 4.5 eggs per day 

 after she began ovipositing, while fly No. i of Table III deposited an 

 average of 4.6 eggs per day for the first 24 days of the fifth month of 

 her life. 



Table II. — Daily rate of oviposition of the Mediterranean fruit fly. Females emerged 

 on April 4, IQ14, and were placed with fruit on April 14, IQ14 



Date of o\nposition.'» 



Number of eggs deposited. 



Fly 

 No. I. 



Fly- 

 No. 2. 



Fly 



No. 3- 



Fly 

 No. 4. 



Fly 

 No. 5. 



Fly 

 No. 6. 



Fly 



No. 7. 



Fly 



No. 8. 



Fly 



No. 9. 



Apr. 16 



17 to 20. 



20 to 22 . 



22 to 25. 



25 to 27. 



27 to 29. 



29 to 30 . 

 May I to 3 . . . 



3 to 5 . . . 



6 



7 



8 



9 



10 



II 



12 



13 



14 



IS 



16 



17 



18 



19 



20 



21 



22 



23 



24 



2S 



26 



27 



28 



29 



30 



31 



June I 



2 



3 



3 



14 



II 

 o 

 o 



25 

 2 

 8 

 9 

 9 



3 

 10 



4 

 S 

 o 

 o 

 o 

 9 

 I 

 o 

 o 



II 

 o 

 7 



13 

 6 

 o 



24 



19 



13 

 16 



17 

 25 



12 



O 



19 



9 



7 

 o 



7 

 10 



7 

 10 



5 

 II 

 o 

 3 

 5 

 6 



<» Dates on which none of the 

 l> Died on this date. 

 « Escaped on this date. 



o 



4 

 18 



4 

 9 



IS 

 3 

 9 



12 



9 

 8 



13 

 9 

 flies oviposited are 



6 

 9 

 3 

 3 

 o 

 6 

 3 

 S 

 12 



14 

 o 



15 

 16 



19 

 o 



12 



3 

 7 

 6 



5 



14 

 8 



13 



10 



6 



4 



omitted from 



o 



5 

 o 



14 

 o 



23 

 19 



o 



9 

 2 



o 



8 



II 



9 

 6 

 8 



3 



4 

 4 

 3 

 o 



5 



3 



7 



10 



21 



5 



14 



7 ' 



the table. 



o 

 O 



2 

 O 



20 

 O 



13 



o 



o 



3 

 o 

 o 

 o 

 o 

 o 

 I 



14 



9 

 II 

 8 

 

 4 

 7 

 3 

 3 

 8 



4 

 7 

 4 

 8 



S 

 6 

 2 



