. Bulletin of the Department of Agriculture. Agriculture. 72 BULLETIN iK32, U. S. DEPAETMENT OF AGRICULTURE. Table XLVIII.—Length of cocooning period of transforming codling moth larvce of the second brood, Grand Junction, Colo., 1916. Larvae left fruit. Num- ber of indi- viduals. Length of cocooning period in specified days, beuig the time from leaving the fruit to the time of pupation. Ave. Max. Min. 2 3 4 5 6 7 ^ ^ 10 12 14 July 23 24 25 26 27 28 29 30 31 Aug. 1 2 3 4 5 6 7 8 9 10 11 13 14 2 8 6 15 18 15 13 12 19 10 17 8 7 3 2 4 1 1 1 2 1 2 4 1 5 8 9 8 2 5 5 5 4 4 2 1 2 Days.
. Bulletin of the Department of Agriculture. Agriculture. 72 BULLETIN iK32, U. S. DEPAETMENT OF AGRICULTURE. Table XLVIII.—Length of cocooning period of transforming codling moth larvce of the second brood, Grand Junction, Colo., 1916. Larvae left fruit. Num- ber of indi- viduals. Length of cocooning period in specified days, beuig the time from leaving the fruit to the time of pupation. Ave. Max. Min. 2 3 4 5 6 7 ^ ^ 10 12 14 July 23 24 25 26 27 28 29 30 31 Aug. 1 2 3 4 5 6 7 8 9 10 11 13 14 2 8 6 15 18 15 13 12 19 10 17 8 7 3 2 4 1 1 1 2 1 2 4 1 5 8 9 8 2 5 5 5 4 4 2 1 2 Days. Days. 'Days. 4 4 2 5 8 9 3 2 3 7 2 5 1 2 3 2 2 6 5 6 6 5 5 6 14 8 5 6 5 4 12 6 10 9 10 5 4 4 4 4 3 3 3 3 3 4 4 4 2 4 4 5 6 10 9 5 2 1 2 3 7 2 1 1 3 2 5 2 2 1 1 1 1 1 1 1 1 1 1 1 1 171 ' 15 67 56 20 ' 1 ^ 2 1 1 14 2 OF THE Second Brood. began pupating July 27, when Time of pupation.—The insectary reared larvae of the second brood 2 individuals transformed. The number of larvae transforming daily increased up to August 1 and, as will be seen in Table XLIX and figure 27, 23 individuals pu- pated on this date. The last pu- pation occurred August 23. Length of the p>upal stage.— Data on the length of the pupal stage of 160 pupse of the second brood were obtained. These ob- servations are recorded in Table L, and, as shown therein, the ob- servations included pupae that transformed from July 27 to Au- gust 23. Owing to the fairly even climatic conditions during this period there was little difference in the length of the pupal stage, the range being from 11 to 16 days, with an average of Fig. 27.—Time of pupation of second brood of the codling moth, Grand Junction, Colo., Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illu
Size: 1757px × 1423px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
