Monitoring and discrimination of Pandemis moths in apple orchards using semiochemicals, wing pattern morphology and DNA barcoding

Herrera, Sebastian Larsson; Tha, Cristina; Vetukuri, Ramesh R.; Knight, A. L.; Grenville‐Briggs, Laura J.

doi:10.1016/j.cropro.2020.105110

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Attractants comprised both constitutive plant compounds such as pear ester and induced volatiles released upon feeding damage by leafroller larvae, such as 2-PET, benzyl alcohol and benzyl cyanide. However, plant volatiles only significantly attracted when combined with AA 36,38 .…”

Section: A Two-component Blend Alone Can Selectively Attract L Botramentioning

confidence: 92%

Designing a species-selective lure based on microbial volatiles to target Lobesia botrana

Herrera¹,

Rikk

Köblös

et al. 2020

Sci Rep

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Sustainable, low impact control methods, including mating disruption and microbial insecticides against L. botrana have been available for decades. Yet, successful implementation has been restricted to only a few grapevine districts in the world. A limiting factor is the lack of a female attractant to either monitor or control the damaging sex. Volatile attractants for both female and male insects can be used to assess when L. botrana populations exceed economic thresholds, and to decrease the use of synthetic pesticides within both conventional and pheromone programs. Rather than using hostplant volatiles, which are readily masked by background volatiles released by the main crop, we tested the attractiveness of volatiles that signify microbial breakdown and more likely stand out against the background odour. A two-component blend of 2-phenylethanol (2-PET) and acetic acid (AA) caught significant numbers of both sexes. Catches increased with AA and, to a minimal extent, 2-PET loads. However, a higher load of 2-PET also increased bycatches, especially of Lepidoptera and Neuroptera. Major (ethanol, ethyl acetate, 3-methyl-1-butanol) or minor (esters, aldehydes, alcohols and a ketone) fermentation volatiles, did surprisingly not improve the attraction of L. botrana compared to the binary blend of 2-PET and AA alone, but strongly increased bycatches. The most attractive lure may thus not be the best choice in terms of specificity. We suggest that future research papers always disclose all bycatches to permit evaluation of lures in terms of sustainability.

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Section: A Two-component Blend Alone Can Selectively Attract L Botramentioning

confidence: 92%

Designing a species-selective lure based on microbial volatiles to target Lobesia botrana

Herrera¹,

Rikk

Köblös

et al. 2020

Sci Rep

Self Cite

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“…Significant progress in the development of effective non‐pheromone lures for codling moth began when the microbial volatile AA was combined with PE (Landolt et al., 2007). Additional studies have suggested that AA is important in several HPV‐based blends for other tortricids (Jósvai et al., 2016b; Knight et al., 2014, 2017; Larsson Herrera et al., 2020; Mujica et al., 2018; Tasin et al., 2018) and for species in other Lepidoptera families (Jósvai et al., 2016a; Landolt, 2005; Landolt et al., 2013). Further improvements in lure development for codling moth included the addition of DMNT (Knight & Light, 2012; Knight et al., 2019b), but DMNT is relatively short‐lived compared with PE and is costly to synthesize (Knight et al., 2014).…”

Section: Discussionmentioning

confidence: 99%

Development of multi‐component non‐sex pheromone blends to monitor both sexes of Cydia pomonella (Lepidoptera: Tortricidae)

Preti

Knight²,

Mujica³

et al. 2021

J Applied Entomology

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Nineteen host plant volatiles (HPVs) were screened for attractivity to adult codling moth Cydia pomonella (L.) as a fourth component of core blends (3K) including (E,Z)‐2,4‐ethyl decadienoate, (E)‐4,8‐dimethyl‐1,3,7‐nonatriene and acetic acid. Each new quaternary combination was compared with a previously reported attractive bisexual lure (4K), consisting of the 3K blend plus 6‐ethenyl‐2,2,6‐trimethyloxan‐3‐ol (pyranoid linalool oxide, pyrLOX). All lure evaluations were conducted in apple, Malus domestica (Borkhausen). Several compounds were found to significantly lower total and/or female catches when added to the 3K blend, including (Z)‐3‐hexenol, (E)‐2‐hexanal and hexyl butanoate (female and total moths), and (Z)‐3‐hexenyl acetate and linalool (female moths). Other compounds when added to the 3K blend did not increase or decrease moth catches, including methyl salicylate, (E)‐β‐ocimene, limonene, β‐caryophyllene, butyl hexanoate, farnesol, terpineol, terpinen‐4‐ol and α‐pinene. A few added compounds significantly increased moth catches compared with the 3K blend, including β‐pinene (male moths), (Z)‐jasmone (male and total moths), (E)‐β‐farnesene and β‐myrcene (female and total moths), and (E,E)‐α‐farnesene (male, female, and total moths). In addition, each of these five compounds when added to the 3K core blend performed similarly to the 4K lure (male, females, and total moths). Further studies should expand these results through tests of these and other new blends with a range of component ratios and total loading amounts. Field trials should also be replicated within all host crops of codling moth and across major geographical production regions.

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Species-Specific Induction of Plant Volatiles by Two Aphid Species in Apple: Real Time Measurement of Plant Emission and Attraction of Lacewings in the Wind Tunnel

et al. 2021

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Upon damage by herbivores, plants release herbivory-induced plant volatiles (HIPVs). To find their prey, the pest’s natural enemies need to be fine-tuned to the composition of these volatiles. Whereas standard methods can be used in the identification and quantitation of HIPVs, more recently introduced techniques such as PTR-ToF–MS provide temporal patterns of the volatile release and detect additional compounds. In this study, we compared the volatile profile of apple trees infested with two aphid species, the green apple aphid Aphis pomi, and the rosy apple aphid Dysaphis plantaginea, by CLSA-GC–MS complemented by PTR-ToF–MS. Compounds commonly released in conjunction with both species include nonanal, decanal, methyl salicylate, geranyl acetone, (Z)-3-hexenyl acetate, (Z)-3-hexenyl butanoate, (Z)-3-hexenyl 2-methyl-butanoate, (E)-β-caryophyllene, β-bourbonene and (Z)-3-hexenyl benzoate. In addition, benzaldehyde and (E)-β-farnesene were exclusively associated with A. pomi, whereas linalool, (E)-4,8-dimethyl-1,3,7-nonatriene were exclusively associated with D. plantaginea. PTR-ToF–MS additionally detected acetic acid (AA) and 2-phenylethanol (PET) in the blends of both trees attacked by aphid species. In the wind tunnel, the aphid predator, Chrysoperla carnea (Stephens), responded strongly to a blend of AA and PET, much stronger than to AA or PET alone. The addition of common and species-specific HIPVs did not increase the response to the binary blend of AA and PET. In our setup, two host-associated volatiles AA + PET appeared sufficient in the attraction of C. carnea. Our results also show the importance of combining complementary methods to decipher the odor profile associated with plants under pest attack and identify behaviourally active components for predators.

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Monitoring and discrimination of Pandemis moths in apple orchards using semiochemicals, wing pattern morphology and DNA barcoding

Cited by 5 publications

References 17 publications

Designing a species-selective lure based on microbial volatiles to target Lobesia botrana

Designing a species-selective lure based on microbial volatiles to target Lobesia botrana

Development of multi‐component non‐sex pheromone blends to monitor both sexes of Cydia pomonella (Lepidoptera: Tortricidae)

Species-Specific Induction of Plant Volatiles by Two Aphid Species in Apple: Real Time Measurement of Plant Emission and Attraction of Lacewings in the Wind Tunnel

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