Development and reproduction of Spodoptera frugiperda on four cruciferous vegetables
Author of the article:LEI Chun-Mei, XIAO Yong, WU Yu-Hong, PENG Zheng-Ke, YIN Fei, ZHOU Xiao-Mao, LI Zhen-Yu, ZHANG Jun-Ji
Author's Workplace：Institute of Biological Control, Jilin Agricultural University, Engineering Research Center of Biological Control in Jilin province, Changchun 130118, China; Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, China
Key Words：Spodoptera frugiperda; cruciferous vegetables; development; fecundity ?
Abstract：
[Objectives] To compare the development and reproduction of Spodoptera frugiperda raised on radish, broccoli, cabbage and mustard crops, in order to assess the risk this species poses to cruciferous vegetable crops. [Methods] Larvae of S. frugiperda were raised on either radish, broccoli, mustard, cabbage, or corn (control), and their developmental parameters, pupal weight and adult fecundity compared. [Results] Larvae raised on maize had the shortest development period [(16.24±0.30) d], followed by those raised on cabbage [(17.11±0.19) d], broccoli [(20.53±0.48) d], mustard [(21.32±0.36) d], and radish [(25.32±0.43) d]. The duration of the pupal stage was longest in larvae raised on maize [(10.68±0.12) d], followed by those raised on radish [(10.50±0.23) d], then broccoli [(10.29±0.32) d], then cabbage [(10.00±0.19) d], then mustard [(9.91±0.23) d]. Larvae raised on maize had lighter pupae than those raised on cruciferous vegetables: cabbage [(0.139±0.007) g] > broccoli [(0.133±0.009) g] > radish [(0.119±0.008) g] > mustard [(0.117±0.007) g] > corn [(0.112±0.006) g] . Larvae raised on cruciferous vegetables had lower survival rates than those that raised on corn: radish (36.67%) < mustard (47.18%) < broccoli (51.67%) < cabbage (68.06%) < maize (73.33%). The minimum pre-oviposition period for corn was [(1.20±0.20) d], and the maximum amount of eggs laid was (1 042.25±109.19). The maximum pre-oviposition periods of larvae raised on broccoli, radish, cabbage and mustard plants were [(2.60±0.40) d], [(2.40±0.24) d], [(1.60±0.24) d] and [(1.40±0.24) d], respectively. The minimum numbers of eggs laid by adults raised on radish, broccoli, mustard, and cabbage plants were (411.25±99.11), (903.67±185.67) , (915.00±74.23) and (973.60±70.11), respectively. [Conclusion] S. frugiperda can complete its life history on radish, mustard, broccoli and cabbage plants, and may therefore pose a risk to both these and other cruciferous, vegetable crops.