Effect of host plants on development and reproduction of <Emphasis Type="Italic">Rhynchophorus ferrugineus</Emphasis> (Olivier) (Coleoptera: Curculionidae) |
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| Authors: | Rui-Ting Ju Feng Wang Fang-Hao Wan Bo Li |
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| Institution: | (1) Shanghai Institute of Landscape Gardening Science, 200232 Shanghai, People’s Republic of China;(2) Coastal Ecosystems Research Station of the Yangtze River Estuary, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 200433 Shanghai, People’s Republic of China;(3) State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection (South Campus), Chinese Academy of Agricultural Sciences, 100081 Beijing, People’s Republic of China; |
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| Abstract: | The development, survivorship and reproduction of red palm weevil Rhynchophorus ferrugineus, reared on five ornamental palm slices, were studied in the laboratory at constant temperature of 26°C. The developmental
time of R. ferrugineus was 68.8 days on Washington palm (Washingtonia filifera), 74.1 days on Canary Island date palm (Phoenix canariensis), 82.1 days on Chusan palm (Trachycarpus fortunei), 85.4 days on pindo palm (Butia capitata) and 90.6 days on silver date palm (Phoenix sylvestris), respectively, and the developmental time on silver date palm was significantly longer than that on the other plants. The
survival of immature R. ferrugineus ranged from 25.0 to 38.3%. Most mature larvae began to pupate at eighth-instar on Canary Island date palm and Washington
palm, while on Chusan palm, Pindo palm and silver date palm, most of them began to pupate at ninth-instar. The mean lifetime
fecundity of R. ferrugineus on Canary Island date palm, Chusan palm, Pindo palm, Washington palm and silver date palm was 267.8, 134.0, 109.8, 216.0,
and 131.4 eggs, respectively, and lifetime fecundity on Canary Island date palm and Washington palm was significantly greater
than that on the other plants. The intrinsic rate of natural increase (r
m
), net reproductive rate (R
0) and mean generation time (T) were 0.038, 78.3 and 115.0 days on Canary Island date palm, 0.028, 33.1 and 125.5 days on Chusan palm, 0.029, 40.9 and 128.2 days
on Pindo palm, 0.041, 64.0, 101.4 days on Washington palm, and 0.025, 30.6, 135.6 days on silver date palm, respectively.
Based on population growth parameters, it is concluded that Canary Island date palm and Washington palm were the more suitable
host plants and silver date palm was the least suitable host plant for R. ferrugineus. |
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