scholarly journals Comparative analysis of Colorado potato beetle (Leptinotarsa decemlineata Say) resistance monitoring methods

Pesticidi ◽  
2003 ◽  
Vol 18 (3) ◽  
pp. 159-173
Author(s):  
Sladjan Stankovic ◽  
Anton Zabel ◽  
Miodrag Kostic ◽  
Milorad Sestovic
Keyword(s):  
Comparative Analysis ◽  
Topical Application ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Monitoring Methods ◽  
Resistance Monitoring ◽  
Development Of Resistance ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say ◽  
Filter Papers

Insecticide efficacy for Colorado potato beetle (Leptinotarsa decemlineata Say) control rapidly decreases due to development of resistance. Resistance causes harmful impact to both, economy and ecology. Resistance monitoring has one of the most important roles in avoiding these problems. Early detection and resistance monitoring could prolong use of insecticides. Standard laboratory methods (impregnated filter papers, insect dipping glass surface spraying and topical application) for Colorado Potato Beetle resistance detection were tested. Because of it's best performances for most parameters, topical application was chosen by comparative analysis for further investigations. It is also determined, that adults are more suitable for testing.

THE EFFECT OF WATER STRESS AND LEAFLET SIZE ON THE DENSITY OF TRICHOMES AND THE RESISTANCE TO COLORADO POTATO BEETLE LARVAE (LEPTINOTARSA DECEMLINEATA [SAY]) IN SOLANUM BERTHAULTII HAWKES

1990 ◽  
Vol 122 (6) ◽  
pp. 1141-1147 ◽  
Author(s):  
Yvan Pelletier
Keyword(s):  
Water Stress ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Solanum Berthaultii ◽  
Abaxial Surface ◽  
First Instar ◽  
Potato Beetle ◽  
Resistance To Insects ◽  
Leptinotarsa Decemlineata Say ◽  
Growing Conditions

AbstractSolanum berthaultii Hawkes bears trichomes reportedly providing resistance to insects. Results indicated that the density of types A and B trichomes was linearly related to the inverse of the leaflet area. The number of trichomes on the adaxial and on the abaxial surface of terminal leaflets was not affected by two levels of water stress or by growing conditions in the greenhouse or the field. The leaflets of the water-stressed plants were generally smaller and, consequently, the density of trichomes higher.The survival of first-instar Colorado potato beetle larvae was similar on S. berthaultii grown under varying drought conditions and on leaves from field-grown plants bearing different densities of trichomes.

scholarly journals Screening test for detection of Leptinotarsa decemlineata (Say) sensitivity to insecticides

2012 ◽  
Vol 27 (1) ◽  
pp. 59-67
Author(s):  
Dusanka Indjic ◽  
Slavica Vukovic ◽  
Snezana Tanaskovic ◽  
Mila Grahovac ◽  
Tatjana Keresi ◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Screening Test ◽  
Rapid Assessment ◽  
Potato Beetle ◽  
Highly Sensitive ◽  
Leptinotarsa Decemlineata Say ◽  
Two Populations ◽  
Insight Into

In 2009, the sensitivity of 15 field populations of Colorado potato beetle (Leptinotarsa decemlineata Say.) - CPB was assessed to chlorpyrifos, cypermethrin, thiamethoxam and fipronil, four insecticides which are mostly used for its control in Serbia. Screening test that allows rapid assessment of sensitivity of overwintered adults to insecticides was performed. Insecticides were applied at label rates, and two, five and 10 fold higher rates by soaking method (5 sec). Mortality was assessed after 72h. From 15 monitored populations of CPB, two were sensitive to label rate of chlorpyrifos, one was slightly resistant, 11 were resistant and one population was highly resistant. Concerning cypermethrin, two populations were sensitive, two slightly resistant, five were resistant and six highly resistant. Highly sensitive to thiamethoxam label rate were 12 populations, while three were sensitive. In the case of fipronil applied at label rate, two populations were highly sensitive, six sensitive, one slightly resistant and six were resistant. The application of insecticides at higher rates (2, 5 and 10 fold), that is justified only in bioassays, provided a rapid insight into sensitivity of field populations of CPB to insecticides.

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