Scientia Agricultura Sinica ›› 2021, Vol. 54 ›› Issue (3): 573-582.doi: 10.3864/j.issn.0578-1752.2021.03.011

• SPECIAL FOCUS: GREEN CONTROL FOR POTATO TUBERWORM (PHTHORIMAEA OPERCULELLA) • Previous Articles     Next Articles

Influences of Chemical and Physical Stimuli on Oviposition Behavior of Phthorimaea operculella

XIONG Yan1(),HAN Rui1(),HU ChunHua2,WANG Jing1,XIAO Chun1()   

  1. 1College of Plant Protection, Yunnan Agricultural University, Kunming 650201
    2College of Continuing Education and Vocational Education, Yunnan Agricultural University, Kunming 650201
  • Received:2020-05-04 Accepted:2020-05-28 Online:2021-02-01 Published:2021-02-01
  • Contact: Chun XIAO E-mail:xyan891@163.com;hanrui_0228@163.com;x.chun@163.com

Abstract:

【Objective】The objective of this study is to determine the effect of combination of chemical and physical factors on oviposition behavior of potatoworm (Phthorimaea operculella), and to provide a basis for the development of behavior regulation technology of P. operculella.【Method】Tubers were treated with different methods: (1) soaked in heptanal, cineole solution and then dried, (2) wrapped with cotton gauze, or with cotton gauze loading tuber juice, respectively, then oviposition behavior parameters (including landing times, arresting time, ovipositor-probing times, amount of eggs) of mated females on the tubers were observed at the dark-phase (red light intensity: 1.0-1.5 lx) under the environment-controlled conditions of temperature (27±2)℃, relative humidity 50%-70%, and photoperiod 14L:10D.【Result】Females would arrest for longer time (arresting time), and more eggs would be deposited on the surface of the tubers when heptanal solution (0.5 mg·L-1) was applied onto the surface of tubers, but the times of ovipositor-probing and landing did not increase significantly. Significant reduction in arresting time, landing times and ovipositor-probing times, and more egg-deposition, were observed when heptanal solution at the concentration of 30 mg·L-1 was applied to the tuber surface. More eggs were laid on the surfaces of tubers, and no significant change in oviposition behavior (arresting time, landing times and ovipositor-probing times) occurred when cineole solution (6 mg·L-1) was applied. Application of cineole solution at the higher concentration (30 mg·L-1) would result in significant reduction in arresting time, landing times and ovipositor-probing times, and in more egg deposition outside the tuber. When tubers were wrapped with cotton gauze, more eggs were deposited on the tubers, the times of landing and ovipositor-probing decreased significantly, but no significant difference in arresting time appeared. Similar oviposition behaviors were observed when tubers were wrapped with cotton gauze loading tuber juice. Compared with the blank control, the treatment (tubers + cotton gauze loading heptanal (0.5 mg·L-1)) led to more eggs deposition and longer arresting time, and to significant reduction in times of ovipositor-probing and landing. Compared with the single use of heptanal (0.5 mg·L-1), it could significantly reduce ovipositor-probing times and landing times, and at the same time, it could significantly increase the amount of eggs on the tuber and the total amount of eggs. Compared with the single use of cotton gauze, there was no significant difference in each index.【Conclusion】Heptanal can stimulate mated female P. operculella to oviposit in more intensive time. At the concentration of 30 mg·L-1, heptanal will repel the females from the treated potato tuber; at the concentration of 0.5 mg·L-1, heptanal will show an attractive effect on mated female moths. Cineole (30 mg·L-1) only has repellent effect on moths, while wrapped with cotton gauze, cotton gauze soaked in tuber juice, cineole solution (6 mg·L-1) only show stimulating effect on oviposition of females. These results indicate a co-attractive of combination of the chemical stimulus (0.5 mg·L-1 heptanal) and the physical stimulus (cotton gauze).

Key words: potato tuber moth (Phthorimaea operculella), physical factor, chemical factor, oviposition behavior

Fig. 1

The schematic device for oviposition observation of P. operculella"

Table 1

The effect of low concentration of heptanal (0.5 mg·L-1) on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理 Treatment 对照 Control
滞留时间Arresting time (s) 2008.0±167.7* 1432.2±183.7
降落次数Landing times 39.0±3.3 30.0±4.3
试探产卵次数Ovipositor-probing times 156.9±13.4 124.2±25.1
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 21.5±2.0 16.0±1.9
块茎外卵量Amount of eggs outside the tuber 3.2±0.9 1.2±0.4
总卵量Total amount of eggs 24.6±2.1* 17.2±1.9

Table 2

The effect of high concentration of heptanal (30 mg·L-1) on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理 Treatment 对照 Control
滞留时间Arresting time (s) 317.3±68.6** 1318.7±163.4
降落次数 Landing times 12.5±1.9** 32.1±4.5
试探产卵次数Ovipositor-probing times 36.0±9.2** 140.1±25.9
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 5.1±1.1** 18.4±1.7
块茎外卵量Amount of eggs outside the tuber 21.5±1.8** 0.5±0.2
总卵量Total amount of eggs 26.6±2.2* 18.9±1.9

Table 3

The effect of low concentration of cineole (6 mg·L-1) on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理 Treatment 对照 Control
滞留时间Arresting time (s) 1469.5±139.8 1385.7±185.9
降落次数Landing times 32.2±4.2 30.8±4.0
试探产卵次数 Ovipositor-probing times 120.9±18.1 129.5±23.3
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 22.7±2.3* 16.3±1.9
块茎外卵量Amount of eggs outside the tuber 3.4±1.2 0.7±0.4
总卵量Total amount of eggs 26.1±2.7** 17.0±1.8

Table 4

The effect of high concentration of cineole (30 mg·L-1) on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理 Treatment 对照 Control
滞留时间 Arresting time (s) 718.2±141.4** 1370.0±168.7
降落次数Landing times 16.1±3.1** 30.7±4.2
试探产卵次数 Ovipositor-probing times 56.3±12.0** 134.6±21.2
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 9.6±2.5* 17.2±1.8
块茎外卵量Amount of eggs outside the tuber 12.3±2.0** 0.6±0.3
总卵量Total amount of eggs 21.8±1.9 17.8±1.8

Table 5

The effect of cotton gauze on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理 Treatment 对照 Control
滞留时间Arresting time (s) 1505.0±135.0 1358.8±187.0
降落次数 Landing times 13.8±2.0** 32.6±5.1
试探产卵次数 Ovipositor-probing times 65.9±10.2** 135.2±20.8
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 31.2±2.7** 17.6±1.8
块茎外卵量Amount of eggs outside the tuber 2.2±0.8* 0.1±0.1
总卵量Total amount of eggs 33.4±2.4** 17.7±1.9

Table 6

The effect of cotton gauze loading potato juice on oviposition behavior of P. operculella mated female moths"

参数 Parameter 处理Treatment 对照Control
滞留时间Arresting time (s) 1592.7±183.9 1365.0±167.3
降落次数Landing times 9.4±1.5** 31.8±4.0
试探产卵次数Ovipositor-probing times 50.3±9.9** 133.5±25.6
卵量Amount of eggs 块茎上卵量Amount of eggs on the tuber 33.4±2.3** 17.1±1.4
块茎外卵量Amount of eggs outside the tuber 0.9±0.6 0.4±0.2
总卵量Total amount of eggs 34.3±2.0** 17.5±1.2

Table 7

The effect of cotton gauze loading heptanal (0.5 mg·L-1) on oviposition behavior of P. operculella mated female moths"

不同刺激
Different stimuli
参数 Parameter
滞留时间
Arresting time (s)
降落次数
Landing times
试探产卵次数
Ovipositor-probing times
卵量 Amount of eggs
块茎上卵量
Amount of eggs on the tuber
块茎外卵量
Amount of eggs outside the tuber
总卵量
Total amount of eggs
对照 Control 1327.1±183.6b 30.9±4.3a 141.0±19.1a 17.8±2.4b 0.8±0.5b 18.6±2.5b
庚醛Heptanal (0.5 mg·L-1) 2061.0±175.6a 35.2±2.6a 153.4±13.3a 23.1±2.1b 3.0±0.6a 26.1±1.7b
纱布Gauze 1560.0±166.0ab 10.3±1.4b 50.2±6.3b 33.2±2.2a 1.0±0.6ab 34.2±2.0a
庚醛(0.5 mg·L-1)结合纱布
Combination of heptanal (0.5 mg·L-1) and gauze
2115.5±161.0a 11.2±0.9b 51.8±5.8b 33.2±2.2a 1.0±0.5ab 34.2±1.9a
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