Table 4. Numbers of female adult plum curculios mov- 

 ing to the treatment or control or remaining in the 

 Petri dish, and subsequent Response Indices, during 

 2 hours of exposure to extracts of whole bodies of fe- 

 males or males. 



Extracts Treatment Control 



Response 

 Dish Index 



Females 

 Males 



37 

 34 



5 

 11 



29 

 28 



45 

 31 



tor or control PCs. If findings with other 

 weevils can serve as a guide, a combina- 

 tion of host plant and pheromonal odors 

 will prove more attractive than either 

 type alone. Our next step will be confir- 

 mation of the findings reported here, fol- 

 lowed by attempts to chemically identify 

 the attractive compounds. 



Acknowledgments 



or two weeks after bloom) and odor of PCs them- 

 selves have potential value for use in traps to moni- 



This work was supported by grants 

 from the USDA Sustainable Agriculture 

 Research and Education Program 

 (SARE), the USDA Northeast Regional 

 IPM Competitive grants program, and 



the New England Tree Fruit Growers Research 



Committee. 



•Xa vL» •sl^ •sl^ •X^ 



0^ 0^ r^ ry^ 0^ 



Fruit Notes, Winter, 1996 



