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Optimizing the attractiveness of pheromone baits used for trapping the four-eyed spruce bark beetle Polygraphus poligraphus
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för kemiteknik.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för kemiteknik.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för kemiteknik.
SLU, Uppsala .
Vise andre og tillknytning
2019 (engelsk)Inngår i: Journal of applied entomology, ISSN 0931-2048, E-ISSN 1439-0418, Vol. 143, nr 7, s. 721-730Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Bark beetles have caused extensive damage to forests in central Sweden during the past decade, and the four-eyed spruce bark beetle, Polygraphus poligraphus, seems to be involved. However, its role in these bark beetle outbreaks is still not clear. The purpose of this study was to develop an efficient pheromone bait for P. poligraphus, which would make it possible to study the species more carefully and thereby contribute to protect exposed forests in an environmentally friendly way. Three field studies were conducted in 2015, 2016 and 2018 in Medelpad, county of Västernorrland, Sweden. The pheromone of P. poligraphus, (−)-terpinen-4-ol, was tested at different release rates and in different enantiomeric purities, to find the most attractive formulation for the beetles. It was also tested in combination with racemic frontalin, a compound which has previously been shown to produce a synergistic effect together with (−)-terpinen-4-ol of low enantiomeric purity; 52% ee. Other compounds, chosen based on responses from electroantennographic studies, were also tested in an attempt to find additional attractants and repellents for P. poligraphus. The most attractive treatment tested was enantiomerically pure (−)-terpinen-4-ol (99% ee). When the enantiomeric purity was lower (50% ee), the trap catches was lowered to levels comparable to the catches for unbaited control traps. A strong synergistic effect with frontalin was observed for (−)-terpinen-4-ol of low enantiomeric purity (50% ee) but not for the enantiomerically pure compound (99% ee). The release rate of (−)-terpinen-4-ol (99% ee) was shown to be an important factor. For the combination of frontalin and (−)-terpinen-4-ol (50% ee), the attraction seemed strongest when (−)-terpinen-4-ol was released at a higher rate than frontalin. An interesting and novel result was that a repellent compound, α-terpineol, was identified in our studies. Our results from field studies and electroantennography recordings also indicate that (+)-terpinen-4-ol is a repellent for P. poligraphus.

sted, utgiver, år, opplag, sider
2019. Vol. 143, nr 7, s. 721-730
Emneord [en]
enantiomers, field study, frontalin, pheromone, synergism, terpinen‐4‐ol
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-36659DOI: 10.1111/jen.12641ISI: 000475465300003Scopus ID: 2-s2.0-85064480153OAI: oai:DiVA.org:miun-36659DiVA, id: diva2:1335939
Tilgjengelig fra: 2019-07-08 Laget: 2019-07-08 Sist oppdatert: 2019-10-16bibliografisk kontrollert
Inngår i avhandling
1. Structure elucidation of semiochemicals related to: Polygraphus poligraphus, Polygraphus punctifrons, Trioza apicalis, Whittleia retiella, Neodiprion edulicolus, Neodiprion scutellatus, Neodiprion knereri and Neodiprion virginianus
Åpne denne publikasjonen i ny fane eller vindu >>Structure elucidation of semiochemicals related to: Polygraphus poligraphus, Polygraphus punctifrons, Trioza apicalis, Whittleia retiella, Neodiprion edulicolus, Neodiprion scutellatus, Neodiprion knereri and Neodiprion virginianus
2019 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Sundsvall: Mid Sweden University, 2019. s. 60
Serie
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 293
Emneord
Pheromone, semiochemicals, bark beetles, pest, Polygraphus poligraphus, Polygraphus punctifrons, Trioza apicalis, Whittleia retiella, Neodiprion spp., analysis
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-36850 (URN)978-91-88527-88-2 (ISBN)
Disputas
2019-03-12, O102, Sundsvall, 10:15 (engelsk)
Veileder
Merknad

Vid tidpunkten för disputationen var följande delarbeten opublicerade: delarbete 2 (accepterat), delarbete 3 (accepterat), delarbete 4 (inskickat), delarbete 5 (inskickat), delarbete 6 (manuskript).

At the time of the doctoral defence the following papers were unpublished: paper 2 (accepted), paper 3 (accepted), paper 4 (submitted), paper 5 (submitted), paper 6 (manuscript).

Tilgjengelig fra: 2019-08-14 Laget: 2019-08-14 Sist oppdatert: 2020-02-17bibliografisk kontrollert

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