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Challenges of pheromone-based mating disruption of Cydia strobilella and Dioryctria abietella in spruce seed orchards

Svensson, Glenn P. LU ; Wang, Hong Lei LU ; Jirle, Erling V. LU ; Rosenberg, Olle; Liblikas, Ilme; Chong, J. Michael; Löfstedt, Christer LU and Anderbrant, Olle LU (2018) In Journal of Pest Science 91. p.639-650
Abstract

Seed orchards function as the primary source of high-quality seeds for reforestation in many European countries, but their seed yields can be severely reduced due to seed- and cone-feeding insects. We evaluated various parameters of pheromone-based mating disruption for control of the moths Cydia strobilella and Dioryctria abietella, which are major pests in European Picea abies seed orchards. We applied different types of pheromone dispensers (rubber septa or wax droplets) at different densities and heights, and with different amounts of active components, covering whole orchards or part of an orchard. The efficacy of the treatment was evaluated by analysing male captures in pheromone-baited assessment traps, and... (More)

Seed orchards function as the primary source of high-quality seeds for reforestation in many European countries, but their seed yields can be severely reduced due to seed- and cone-feeding insects. We evaluated various parameters of pheromone-based mating disruption for control of the moths Cydia strobilella and Dioryctria abietella, which are major pests in European Picea abies seed orchards. We applied different types of pheromone dispensers (rubber septa or wax droplets) at different densities and heights, and with different amounts of active components, covering whole orchards or part of an orchard. The efficacy of the treatment was evaluated by analysing male captures in pheromone-baited assessment traps, and presence of larvae in cones. A dramatic decrease (94–100%) in capture of males in traps occurred in all pheromone-treated plots compared to control plots for both moth species. In contrast, a subsequent reduction in larval numbers in cones was only achieved when wax droplets were used as the dispensing formulation at high density and at the highest pheromone dose tested, and only in half of the trials for each pest species. Electrophysiological recordings using antennae of male C. strobilella indicated elevated pheromone concentrations in a treated plot versus a control plot. Our results show that mating disruption has potential to reduce cone damage in spruce seed orchards caused by C. strobilella and D. abietella, but optimisation of the technique is required to achieve consistent and efficient population suppression of these pests.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cone damage, Lepidoptera, Pest management, Picea, SPLAT, Mating distruption
in
Journal of Pest Science
volume
91
pages
639 - 650
publisher
Springer Verlag
external identifiers
  • scopus:85033492305
ISSN
1612-4758
DOI
10.1007/s10340-017-0929-x
language
English
LU publication?
yes
id
6957208a-fde8-4bb1-9e5a-452a7a7af128
date added to LUP
2017-11-20 11:01:33
date last changed
2018-05-22 03:00:08
@article{6957208a-fde8-4bb1-9e5a-452a7a7af128,
  abstract     = {<p>Seed orchards function as the primary source of high-quality seeds for reforestation in many European countries, but their seed yields can be severely reduced due to seed- and cone-feeding insects. We evaluated various parameters of pheromone-based mating disruption for control of the moths <i>Cydia strobilella</i> and <i>Dioryctria abietella</i>, which are major pests in European <i>Picea abies</i> seed orchards. We applied different types of pheromone dispensers (rubber septa or wax droplets) at different densities and heights, and with different amounts of active components, covering whole orchards or part of an orchard. The efficacy of the treatment was evaluated by analysing male captures in pheromone-baited assessment traps, and presence of larvae in cones. A dramatic decrease (94–100%) in capture of males in traps occurred in all pheromone-treated plots compared to control plots for both moth species. In contrast, a subsequent reduction in larval numbers in cones was only achieved when wax droplets were used as the dispensing formulation at high density and at the highest pheromone dose tested, and only in half of the trials for each pest species. Electrophysiological recordings using antennae of male <i>C. strobilella</i> indicated elevated pheromone concentrations in a treated plot versus a control plot. Our results show that mating disruption has potential to reduce cone damage in spruce seed orchards caused by <i>C. strobilella</i> and <i>D. abietella</i>, but optimisation of the technique is required to achieve consistent and efficient population suppression of these pests.</p>},
  author       = {Svensson, Glenn P. and Wang, Hong Lei and Jirle, Erling V. and Rosenberg, Olle and Liblikas, Ilme and Chong, J. Michael and Löfstedt, Christer and Anderbrant, Olle},
  issn         = {1612-4758},
  keyword      = {Cone damage,Lepidoptera,Pest management,Picea,SPLAT,Mating distruption},
  language     = {eng},
  month        = {03},
  pages        = {639--650},
  publisher    = {Springer Verlag},
  series       = {Journal of Pest Science},
  title        = {Challenges of pheromone-based mating disruption of <i>Cydia strobilella</i> and <i>Dioryctria abietella</i> in spruce seed orchards},
  url          = {http://dx.doi.org/10.1007/s10340-017-0929-x},
  volume       = {91},
  year         = {2018},
}