. Cranberries; : the national cranberry magazine. Cranberries. elucidated regarding the moni- toring results for 1981 and 1982: (1) The biofix occurred well before major peaks of egg deposition. (2) The biofix occurred about days before the date for 50 percent moth emergence. This relationship is probably coincidental, but it deserves further investigation. (3) Most CF eggs were depos- ited after at least 80 percent out of bloom. (4) Although peaks of moth emergence were followed closely by peaks of egg deposition, this relationship should not be expected to hold every year. After moths em
. Cranberries; : the national cranberry magazine. Cranberries. elucidated regarding the moni- toring results for 1981 and 1982: (1) The biofix occurred well before major peaks of egg deposition. (2) The biofix occurred about days before the date for 50 percent moth emergence. This relationship is probably coincidental, but it deserves further investigation. (3) Most CF eggs were depos- ited after at least 80 percent out of bloom. (4) Although peaks of moth emergence were followed closely by peaks of egg deposition, this relationship should not be expected to hold every year. After moths emerge, weather factors strongly influence when mating and egg deposition take place. Rainfall, strong winds, and cool, dry air all act to delay these processes. (5) Table 1 shows that the ratio of male to female moths newly emerged in cages ranged between Table 1. Sex ratios pertaining to cranberry fruitworm moths captured in emergenc cages. State Bog, E. Wareham, Mass. 1981-82. 1981 1982 No. moths sexed 355 48 Male/female ratio and Tomlinson obtained, ratios of (1962) and (1966) by using blacklights to capture large numbers of moihs throughout the summer months, but his samples consisted of moths of all reproductive ages. In a similar study, however, the ratio of males to females was (Tomlinson 1970), more in agreement with current findings. Knowing the sex ratio for a spe- cies and the number of individu- als emerged per unit area ena- bles one to estimate potenti egg production. When timii insecticide applications, it is al important to know whether o sex of moth greatly outnumbe the other at the beginning oft emergence period. Whe predominance occurs, a lag peri usually precedes egg depositic In 1981 and 1982, CF male a female moths emerged approximately equal numb* throughout the emergence perit Because most CF females mj. Arthur G. Carroll Crop Insurance Agency Home Office RFD 2, Box 764 Limerick, ME 04048 (207) 793-8988 New England's Largest C
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