Biology, predatory potential and functional response of Mallada desjardinsi (Navas) on melon aphid, Aphis gossypii glover
Biology, predatory potential and functional response of Mallada desjardinsi (Navas) on melon aphid, Aphis gossypii glover
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Mallada desjardinsi (Navas) 对瓜蚜、棉蚜的生物学、捕食潜力和功能反应
DOI：
10.1007/s42690-020-00233-5
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发表时间：
2020
影响因子：
1.2
通讯作者：
M. Gaikwad
中科院分区：
文献类型：
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作者：
D. Kumari;S. Verma;P. L. Sharma;M. Gaikwad
本研究对取食甜瓜蚜虫的大斑潜蝇幼虫的发育生物学、捕食潜力和功能反应进行了研究。实验在实验室条件下进行，温度为25 ± 1°C，相对湿度为70 ± ，光周期为12：12。新出的幼虫分别饲养在含有湿润吸墨纸和黄瓜叶片(6 × 6 cm)的培养皿中，黄瓜叶片上有2龄和3龄幼虫的混合种群。棉球。结果表明，潜伏期、总幼虫期、预蛹和蛹历期最长。天数分别为2.90天、12.50天、1.40天和9.10天。产卵前、产卵和产卵后三个时期。成虫历期分别为11.80d、32.40d和2.76d，平均每雌产卵128.58粒。第1、2、3龄为OFM。平均捕食量分别为30.98万头、107.80头和265.40头，全生命周期总消耗量为298.50头/天敌。捕食性天敌的三个幼虫阶段均表现出对蚜虫的II型功能反应。根据罗杰斯随机捕食者方程，1龄时捕食者的攻击率最低(0.092)，3龄时最高(0.118)。功能反应参数表明，随着捕食者阶段的推进，攻击率增加，处理时间减少。从生物防治的角度来看，我们的数据表明了Fm的成功使用。三龄幼虫在防治甜瓜蚜虫综合防治方案中作为贪食性食饵。
This study evaluated the developmental biology, predatory potential, and functional response ofMallada desjardinsi(Neuroptera:Chrysopidae) larval instars fed on melon aphid,Aphis gossypiiGlover. The experiment was carried out under laboratory conditions at 25 ± 1 °C, with 70 ± 5% R.H and 12:12 L:D photoperiod. The freshly emerged larvae were reared individually in the Petri plates containing moist blotting paper and cucumber leaves (6 × 6 cm) infested with assorted population of second and third instars ofA. gossypii. The results showed that incubation, total larval, pre pupal and pupal periods ofM. desjardinsiwere 2.90, 12.50, 1.40 and 9.10 days, respectively. Pre oviposition, oviposition and post oviposition period ofM. desjardinsiwas 11.80, 32.40 and 2.76 days, respectively and each female laid an average of 128.58 eggs. The 1st, 2nd and 3rd instars ofM. desjardinsion an average consumed 30.98, 107.80 and 265.40 aphids, whereas total consumption during life cycle was 298.50 aphids/predator. All the three larval stages of the predator exhibited Type II functional response to the aphid. Based on Rogers’s random predator equation, the predator’s attack rate was the lowest (0.092) in the first instar, while the 3rd instar recorded the highest rate (0.118). Functional response parameters indicate that attack rate increased and handling time decreased with the advancement of the predator stage. From biological control point of view, our data suggest the successful use ofM. desjardinsithird instar larvae as voracious feeders in IPM programmes against melon aphid.