228 



and yields of the frego strain were adequate for a nonblased test of the 

 boll weevLl resistance attributed to frego bract. 



A39. ; Parrott, W. L.; and Jones, J. W. 1975. Boll'weevil ovlpoaition 

 behavior: multiple punctured squares. Environ. Entomol. 4: 861-867. 

 We hypothesized that the 9 boll weevil, Anthonomus grandis Boheman, does not dis- 

 criminate against squares in which an egg has previously been oviposited. We call 

 this the non-discrimination hypothesis. The objective of this study was to compare 

 the observed distribution of single and multiple eggs/square over a range of in- 

 festation levels (0-100%) with theoretical values based on our hypothesis. We 

 observed 28,750 squares and classified 22,526 ovipositlon punctures in yr 1 and 

 6500 squares and 3549 oviposition punctures in yr 2. Our data support the non- 

 discrimination hypothesis - the 9 boll weevil did not detect squares containing 

 an egg and did not discriminate against squares containing an egg. Large samples 

 such as these allow a statistical approach to an understanding of some aspects of 

 insect behavior that can not be obtained from observations of a small sample or 

 of a small number of samples. 



440. ; Parrott, W. L.; and McCarty, J. C, Jr. 1973. The role of a boll 

 weevil resistant cotton in pest management research. J. Environ. Qual. 

 2: 337-340. 

 The role of the boll weevil ( Anthonomus grandis Boh.) resistant cotton ( Gossy- 

 pium hlrsutum L.) strain, frego bract, in the management of cotton pests was 

 Investigated in 22 fields in Yalobusha County, Mississippi in 1971. The objec- 

 tives were (i) to measure the boll weevil population suppression when fcego bract 

 cotton was used with and without a reproduction-diapause program the previous 

 year, and (ii) to determine if the resistant cotton strain could materially 

 aid in removing the boll weevil as the key pest in cotton fields. If so, one 

 could potentially use integrated control for other cotton pests and also con- 



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