Synthetic host volatiles increase efficacy of trap cropping for management of Colorado potato beetle, <i>Leptinotarsa decemlineata</i> (Say)

Martel, John W.; Alford, A. R.; Dickens, Joseph C.

doi:10.1111/j.1461-9555.2005.00248.x

Cited by 47 publications

(33 citation statements)

References 31 publications

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“…Previous results have suggested that diff erential production of volatile compounds may control attraction of insects to specifi c genotypes (Reddy et al, 2004;Martel et al, 2005). Piesik et al (2008) showed that wheat stems reliably produce several volatile compounds that infl uence attraction of female WSS for oviposition.…”

Section: Discussionmentioning

confidence: 99%

Identification of Novel QTL for Sawfly Resistance in Wheat

et al. 2010

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The wheat stem sawfly (WSS) (Cephus cinctus Nort.) is an important pest of wheat (Triticum aestivum L. em. Thell.) in the Northern Great Plains. This paper reports the genetic analysis of antixenosis for egg‐laying WSS females in recombinant inbred lines (RIL) of hard red spring wheat. Female WSS preferentially choose certain wheat genotypes for egg‐laying, with the cultivar Reeder being preferred and Conan being less preferred. We measured percent stem infestation and percent stem cutting for 91 RIL from a Reeder–Conan cross in four sawfly‐infested locations in Montana. Heritability based on means over environments was h2 = 0.86 for infestation and h2 = 0.75 for cutting. Percent infestation was negatively correlated with heading date (r = −0.57, P < 0.001) and degree of stem solidness (r = −0.31, P < 0.01). A molecular map was created with 431 markers. Quantitative trait loci (QTL) for infestation and cutting were identified as cosegregating with QTL for heading date (controlled by Ppd‐D1 on chromosome 2D) and stem solidness (controlled by Qss.msub.3BL). Additionally, significant QTL for infestation and cutting on chromosomes 2D and 4A were present in several environments, and did not cosegregate with heading date, plant height, or solid stems. These QTL may complement the use of solid stems for host plant resistance by developing wheat lines that vary for attractiveness to the wheat stem sawfly.

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Section: Discussionmentioning

confidence: 99%

Identification of Novel QTL for Sawfly Resistance in Wheat

et al. 2010

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“…This knowledge may be used to improve trapping devices that have already been tested on CPBs (Martel et al, 2005;Kuhar et al, 2006), such as those baited with the aggregation pheromone of CPB (Dickens et al, 2002) or an attractive kairomone (Dickens, 2000). This knowledge may be used to improve trapping devices that have already been tested on CPBs (Martel et al, 2005;Kuhar et al, 2006), such as those baited with the aggregation pheromone of CPB (Dickens et al, 2002) or an attractive kairomone (Dickens, 2000).…”

Section: Discussionmentioning

confidence: 99%

Spectral preference and temporal modulation of photic orientation by Colorado potato beetle on a servosphere

Otálora-Luna

Dickens

2010

Entomologia Experimentalis Et Applicata

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The Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), is a diurnal insect that strongly relies on visual cues to guide its walk. In the present study, we investigated the orientation behavior of non-diapausing walking CPB in response to emissive colors produced by light emitting diodes (LEDs) in a dual choice arena adapted to a servosphere, where the only illumination available came from the photo-stimuli. Our results demonstrate that CPB show positive phototactic behavior when stimulated with different wavelengths of light; they preferred to orient towards white (420-775 nm), ultraviolet (UV) (351 nm), blue (472 nm), green (570 nm), yellow (585 nm), orange (590 nm), and red (660 nm) over darkness when both alternatives were offered, but no orientation responses were elicited by infrared (940 nm). Both males and females preferred yellow and green over other colors, but did not show any particular preference between them, thus correlating with their preference for wavelengths reflected by vegetation. Sexual differences were noted in that male CPB preferred white over either red or UV, whereas female CPB did not show any preferences when offered these colors. Female CPB preferred UV and blue over red, whereas males showed no preferences when these colors were offered. Colorado potato beetles turned at higher angles and performed more tortuous walks in complete darkness and when infrared vs. darkness were offered compared with the rest of the colored lights. Both sexes preferred continuous over pulsed yellow light. Colorado potato beetles subjected to pulsed yellow light showed a temporal alteration of their walking performance by walking less, slower, and turning at a higher rate. The results are discussed with regard to the role of color in the CPB attraction to host plants and conspecifics as well as the role of intermittent photic stimuli in their orientation behavior. The information provided here provides a basis for the improvement of trapping devices for detection and survey of incipient or invasive CPB, and development of alternate control strategies for this important pest of potatoes and other solanaceous crops.

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“…and Scapanes autralis ( Oehlschlager et al , 2002 ). The use of host plant compounds that act as semiochemicals influencing insect behaviour is a promising method of crop protection ( Agelopoulos et al , 1999;Reddy et al , 2004;Martel et al , 2005a ). Exploitation of semiochemicals for pest management can be achieved using various strategies.…”

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confidence: 99%

Behavioural responses of wheat stem sawflies to wheat volatiles

Piesik

Weaver

Runyon

et al. 2008

Agri and Forest Entomology

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Abstract1 Adult wheat stem sawflies Cephus cinctus, pests of cultivated cereals that also infests wild grasses, migrate into wheat fields where they oviposit in elongating, succulent stems.2 Volatiles released by wheat plants at susceptible stages were analyzed to determine potential semiochemical compounds. Seven major compounds were identified and quantified.3 A Y‐tube bioassay was developed to evaluate upwind orientation of adult sawflies in response to an airstream that passed over elongated wheat plants. The bioassay was also conducted with synthetic volatile compounds. The compounds were tested using a range of concentrations spanning those identified in the airstream passing over wheat plants.4 A significant number of adult females were attracted to wheat plants when given a choice of either purified air or the air passing over plants.5 A significant number of female C. cinctus were attracted to (Z)‐3‐hexenyl acetate, β‐ocimene, and (Z)‐3‐hexen‐1‐ol, but were repelled by 6‐methyl‐5‐hepten‐2‐one. Females did not respond to (E)‐2‐hexenal, or (E)‐2‐hexenyl acetate. The behavioural responses were concentration dependent; the highest tested concentration of (Z)‐3‐hexenyl acetate was repellent to females of this species.6 Adult males did not discriminate between air passing over wheat plants and air from a purified airstream. Males did not respond to any tested synthetic compound at any concentration.7 The present study demonstrates for the first time that adult females of wheat stem sawfly display innate behaviours in response to synthetic volatiles. These results provide a basis for the potential development of resistant wheat varieties and for the development of semiochemically‐based pest management.

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Synthetic host volatiles increase efficacy of trap cropping for management of Colorado potato beetle, Leptinotarsa decemlineata (Say)

Cited by 47 publications

References 31 publications

Identification of Novel QTL for Sawfly Resistance in Wheat

Identification of Novel QTL for Sawfly Resistance in Wheat

Spectral preference and temporal modulation of photic orientation by Colorado potato beetle on a servosphere

Behavioural responses of wheat stem sawflies to wheat volatiles

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