magna , the two maize varieties were not performing similarly: (1) the survival of the GM-fed animals were significantly lower than UM-fed, without predator ( p = 0.037, coxph -test), but not significantly different for the group with predator or for the total material ( p = 0.45 and p = 0.16, respectively, coxph- test); (2) the total number of eggs produced by GM-fed animals were lower as compared to animals fed on UM-maize; (3) the growth showed a trend towards larger body sizes in the UM-fed group without predator smell present (Bøhn et al. 2008 ).
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