苹小卷叶蛾在四种寄主植物上的生长发育及繁殖

Growth,development and reproduction of the summer fruit tortrix moth,Adoxophyes orana beijingensis( Lepidoptera: Tortricidae),on four host plants

【目的】研究阐明不同寄主对苹小卷叶蛾Adoxophyes orana生长发育及繁殖的影响。【方法】在室温26±1℃,RH 80%±5%和光周期16L∶8D条件下,以桃Amygdalus persica、苹果Malus pumila、李Prunus salicina和杏Armeniaca vulgaris 4种果树叶片为食料,观察苹小卷叶蛾实验种群生长发育特性和繁殖能力,组建实验种群生命表。【结果】苹小卷叶蛾在桃、苹果、李、杏上生长发育和繁殖存在显著差异。全世代的发育历期在苹果上最短,为34.44 d;在李上最长,为38.37 d。取食桃的蛹重最重(28.25 mg/蛹),取食李的蛹重最轻(17.93 mg/蛹)。世代存活率在桃和苹果上较高(≥60.00%),在李和杏上较小(分别为45.00%和50.00%)。在桃上产卵最多(96.15粒/雌),在杏上最少(68.15粒/雌)。生命表参数表明,净增殖率以桃上为最高(23.20),杏上最低(11.66);内禀增长率也以桃上为最高(0.0953);世代平均周期则以李上最长(35.72 d);种群加倍时间以桃上最短(7.29 d),杏上最长(9.79 d)。【结论】4种寄主植物中,桃和苹果较适宜苹小卷叶蛾幼虫的发育及繁殖。

【Aim】This study aims to ascertain the influence of different host plants on development and reproduction of the summer fruit tortrix moth,Adoxophyes orana. 【Methods】The developmental duration and reproduction of the pest feeding on four host plants including peach( Amygdalus persica),apple( Malus pumila),plum( Prunus salicina) and apricot( Armeniaca vulgaris) were observed under laboratory conditions of 26 ± 1℃,80% ± 5% RH and a photoperiod of 16L∶ 8D,and the life tables were constructed. 【Results 】 The results showed that A. orana exhibited significant differences in the development and reproduction among the four host plants. The developmental duration of A. orana from egg to adult was the shortest on the apple( 34. 44 d) and the longest on the plum( 38. 37 d). The heaviest pupa was on the peach( 28. 25 mg / pupa) and the lightest was on the plum( 17. 93 mg / pupa).The higher survival rates of A. orana from egg to adult were found on the peach and apple( ≥60. 00%),while the lower survival rates were found on the plum and apricot,which were 45. 00% and 50. 00%,respectively. Female adults reared on the peach laid more eggs( 96. 15 eggs / female) than on the other host plants,and those reared on the apricot laid the fewest eggs( 68. 15 eggs / female). The net reproduction rate( R0) of A. orana was the highest on the peach( 23. 20) and the lowest on the apricot( 11. 66). The intrinsic rate of increase( rm) of A. orana was the highest on the peach( 0. 0953). The mean generation time( T) of A. orana was the longest on the plum( 35. 72 d). The doubling time of A. orana was the longest on the apricot( 9. 79 d),and the shortest on the peach( 7. 29 d). 【Conclusion】The development and reproduction of A. orana are better on the peach and apple among the four host plants.