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Position: Home > Articles > Functional response of Coccinella septempunctata to Aphis craccivora Plant Protection 2011,37 (4) 68-71

七星瓢虫对豆蚜的功能反应

作  者:
金剑雪;李凤良;程英;李忠英
单  位:
贵州省植物保护研究所
关键词:
七星瓢虫;豆蚜;功能反应
摘  要:
[目的]测定七星瓢虫各虫态对豆蚜的捕食能力。[方法]将野外七星瓢虫(Coccinella septempunctata L.)采回并在室内饲养一代后,就其各龄幼虫及雌雄成虫对豆蚜(Aphis craccivora Koch)的捕食能力进行室内测定。[结果]七星瓢虫各龄期幼虫以及雌雄成虫对豆蚜的功能反应均属HollingⅡ型模型,1、2、3、4龄幼虫捕食反应拟合的圆盘方程分别为Na=1.121 86N/(1+0.059 92N)、Na=1.217 04N/(1+0.049 33N)、Na=0.789 92N/(1+0.008 00N)、Na=0.967 01N/(1+0.001 41N),雌、雄成虫的圆盘方程分别为Na=0.958 64N/(1+0.001 03N)、Na=0.976 20N/(1+0.001 52N),经χ2检验各虫态的捕食反应的圆盘方程理论值与实测值相符。用七星瓢虫雌成虫进行自身密度的干扰反应测定,利用Hassell模型进行拟合,所得模型方程为E=0.447 4P-0.433 7,经χ2检验雌成虫的捕食作用率实测值与理论值相符,该模型方程能很好地反映雌成虫自身密度的干扰程度。[结论]1~4龄幼虫、雄成虫和雌成虫对豆蚜的日最大捕食量分别为18.7、24.7、98.8、685.5、642.5、927.5头。
译  名:
Functional response of Coccinella septempunctata to Aphis craccivora
作  者:
Jin Jianxue,Li Fengliang,Cheng Ying,Li Zhongying(Institute of Plant Protection,Guiyang 550006,China)
关键词:
Coccinella septempunctata;Aphis craccivora;functional response
摘  要:
[Objective] To test the predation ability of Coccinella septempunctata L.of different stages to Aphis craccivora Koch.[Method] Predation of C.septempunctata to varying densities of A.craccivora feeding on Vicia faba L.was examined under laboratory conditions.All stages of C.septempunctata were isolated individually with different prey densities at(25±1)℃ and a photoperiod of 16L∶8D(h).[Result] All stages of C.septempunctata showed a functional response of HollingⅡ model: Na=1.121 86N/(1+0.059 92N) for the 1st instar larvae;Na=1.217 04N/(1+0.049 33N) for the 2nd instar larvae;Na=0.789 92N/(1+0.008 00N) for the 3rd instar larvae;Na=0.967 01N/(1+0.001 41N) for the 4th instar larvae;Na=0.958 64N/(1+0.001 03N) for the female adults,and Na=0.976 20N/(1+0.001 52N) for the male adults.The relationships between the quantity of A.craccivora preyed by seven-spotted ladybeetles and the density of A.craccivora could be represented by a negative accelerative curve.The ladybeetle individuals interfered each other.The Hassell model could reflect their functional responses.The interference equation was E=0.447 4P-0.433 7.[Conclusion] The estimated maximum of aphids predated by 1st to 4th instar larvae and the adult females and males of seven-spotted ladybeetles per day were 18.7,24.7,98.8,685.5,642.5 and 927.5,respectively.

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