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. 2014 Jul 11;9(7):e102302. doi: 10.1371/journal.pone.0102302

Table 1. Life table parameters of Bombyx mori larvae when fed pollen from Cry1C- or Cry2A-expressing Bt rice or pollen from the corresponding non-transformed varieties.

Parameter No. of pollen grains/cm2 leaf Short-term assay1 Long-term assay2
Control pollen Cry1C pollen Cry2A pollen Control pollen Cry1C pollen Cry2A pollen
Larval weight (mg) 0 400.91±14.70 a 400.91±14.70 a 400.91±14.70 a 400.91±14.70 a 400.91±14.70 a 400.91±14.70 a
50 394.98±13.42 a 399.64±17.07 a 389.49±22.92 a 404.18±12.18 a 380.03±5.31 a 384.13±22.84 a
150 410.48±10.80 a 398.88±4.62 a 383.40±10.56 a 415.31±9.41 a 366.86±8.41 a* 371.34±6.98 a*
450 396.30±12.12 a 388.54±23.64 a 375.96±25.52 a 410.00 ±11.49 a 356.02±2.64 a* 359.17±5.18 a*
1800 385.45±4.09 a 386.24±18.18 a 388.89±4.21 a 412.40±8.82 a 347.25±17.51 a* 354.32±4.69 a*
Larval developmental time (d) 0 26.99±0.37 a 26.99±0.37 a 26.99±0.37 a 26.99±0.37 a 26.99±0.37 a 26.99±0.37 a
50 26.67±0.49 a 27.00±0.21 a 27.41±0.16 a 27.33±0.24 a 27.70±0.12 a 27.27±0.12 a
150 26.97±0.28 a 27.57±0.20 a 27.67±0.15 a 27.47±0.19 a 27.83±0.09 a 28.07±0.30 b
450 27.60±0.12 a 27.83±0.13 a 27.27±0.19 a 27.57±0.24 a 28.90±0.15 b* 28.37±0.15 b
1800 27.30±0.15 a 27.53±0.07 a 27.45±0.23 a 27.90±0.40 a 29.63±0.15 b* 29.17±0.35 b
Pupation rate (%) 0 86.67±3.57 a 86.67±3.57 a 86.67±3.57 a 86.67±3.57 a 86.67±3.57 a 86.67±3.57 a
50 90.00±0.00 a 85.00±2.89 a 81.67±1.67 a 80.00±2.89 a 80.00±2.89 ab 85.00±2.89 a
150 83.33±1.67 a 83.33±4.41 a 83.33±1.67 a 81.67±1.67 a 73.33±1.67 ab 71.67±3.33 ab
450 78.33±3.33 a 80.00±5.00 a 81.67±6.01 a 76.67±1.67 a 73.33±1.67 ab 75.00±2.89 ab
1800 80.00±0.00 a 81.67±3.33 a 70.00±2.89 a 71.67±3.33 a 66.67±1.67 b 65.00±2.89 b
Eclosion rate (%) 0 73.33±2.47 a 73.33±2.47 a 73.33±2.47 a 73.33±2.47 a 73.33±2.47 a 73.33±2.47 a
50 48.33±1.67 b 53.33±1.67 b 48.33±4.41 b 45.00±2.89 b 38.33±6.01 b 41.67±4.41 b
150 41.67±4.41 b 35.00±2.89 c 28.33±3.33 c 31.67±4.41 bc 18.33±6.01 c 28.33±4.41 bc
450 41.67±6.01 b 30.00±5.00 c 31.67±4.41 c 30.00±2.89 bc 6.67±1.67 c* 25.00±2.89 c
1800 33.33±1.67 b 30.00±2.89 c - 23.33±6.01 c 1.67±1.67 c* 3.33±1.67 d*

Values are means ± SE, n = 3.

1

Neonates of B. mori were fed mulberry leaves covered with rice pollen for the first 3 d and were then fed mulberry leaves without rice pollen until pupation.

2

Neonates of B. mori were fed mulberry leaves covered with rice pollen for their entire larval stage.

“-” denotes lost data.

For each parameter, means in a column followed by different letters are significantly different (one-way ANOVAs with Tukey tests for larval weight, pupation and eclosion rate; Kruskal-Wallis Tests followed by Mann-Whitney U-Tests for larval development time).

An asterisk denotes a significant difference between the Bt pollen treatment and the corresponding non-Bt pollen treatment at the same pollen dose (Dunnett test).