Table 1 Effect of consumption of pollen from Bt corn (SK12-5 containing Cry1Ab/2Aj and BT-799 containing Cry1Ac) or from the corresponding non-transformed cultivars (ZD958 and Z58) on life table parameters of Propylea japonica.

From: Ingestion of Bt corn pollen containing Cry1Ab/2Aj or Cry1Ac does not harm Propylea japonica larvae

Parameter

Corn cultivar

SK12-5 (Cry1Ab/2Aj)

ZD958

BT-799 (Cry1Ac)

Z58

Pupation rate (%) a

82.89 (76)

84.21 (76)

89.47 (76)

81.58 (76)

Eclosion rate (%) b

75.00 (76)

73.68 (76)

78.95 (76)

77.63 (76)

Days to pupa ( ± SE)

9.87 ± 0.19 (63)*

10.11 ± 0.16 (64)

9.76 ± 0.10 (68)*

10.14 ± 0.12 (62)

Female fresh weight (mg ± SE)

6.57 ± 0.16 (31)

6.55 ± 0.18 (35)

6.31 ± 0.09 (37)

6.19 ± 0.18 (32)

Male fresh weight (mg ± SE)

5.38 ± 0.12 (26)

5.45 ± 0.14 (21)

5.16 ± 0.16 (23)

5.24 ± 0.19 (27)

  1. Number of replicates is indicated in parentheses.
  2. Each Bt corn cultivar was compared to its corresponding control. An asterisk indicates a significant difference between a Bt corn cultivar and its control (P < 0.05) according to χ2 test for pupation and eclosion rates, Mann-Whitney U–test for days to pupation, ans Student’s t-test for fresh weights.
  3. aThe percentage of larvae that advanced to the pupa stage.
  4. bThe percentage of larvae that advanced to the adult stage.
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