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Monitoring the European pine sawfly with pheromone traps in maturing Scots pine stands

Lyytikainen-Saarenmaa, Päivi ; Varama, M ; Anderbrant, Olle LU ; Kukkola, M ; Kokkonen, A M ; Hedenström, Erik and Högberg, Hans-Erik (2006) In Agricultural and Forest Entomology 8(1). p.7-15
Abstract
1 During 1989-93, field studies were conducted in Finland to develop a method based on pheromone traps to monitor and forecast population levels of the European pine sawfly (Neodiprion sertifer Geoffr.) and tree defoliation.

2 Three traps per site were baited with 100 mu g of the N. sertifer sex pheromone, the acetate ester of (2S,3S,7S)-3,7-dimethyl-2-pentadecanol (diprionol), in maturing pine stands in southern and central Finland. In addition, three different dosages (1, 10 and 100 mu g) of the pheromone were tested in 1991-92.



3 The highest number of males was observed in traps baited with the highest dose. On average, there was a 10-fold increase in trap catch between lure doses.



4... (More)
1 During 1989-93, field studies were conducted in Finland to develop a method based on pheromone traps to monitor and forecast population levels of the European pine sawfly (Neodiprion sertifer Geoffr.) and tree defoliation.

2 Three traps per site were baited with 100 mu g of the N. sertifer sex pheromone, the acetate ester of (2S,3S,7S)-3,7-dimethyl-2-pentadecanol (diprionol), in maturing pine stands in southern and central Finland. In addition, three different dosages (1, 10 and 100 mu g) of the pheromone were tested in 1991-92.



3 The highest number of males was observed in traps baited with the highest dose. On average, there was a 10-fold increase in trap catch between lure doses.



4 Density of overwintering eggs was used to evaluate the effectiveness of pheromone traps in predicting sawfly populations. The proportion of healthy overwintering eggs was determined each year. A model based on the number of current shoots on sample trees, diameter at breast height and tree height was formulated to estimate eggs per hectare.



5 Linear regression analysis produced high coefficients of determination between number of males in traps and density of total eggs in the subsequent generation, when populations were at peak densities. The relationships were not significant for low population densities. The results indicate a risk of model-ate defoliation when the seasonal trap catch is 800-1000 males per trap or higher. (Less)
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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Agricultural and Forest Entomology
volume
8
issue
1
pages
7 - 15
publisher
Wiley-Blackwell
external identifiers
  • wos:000236018000002
  • scopus:33645093445
ISSN
1461-9555
DOI
10.1111/j.1461-9555.2006.00275.x
project
Chemical communication in sawflies
language
English
LU publication?
yes
id
b742c43d-c85b-4a2a-ad85-93d7778bf871 (old id 154331)
date added to LUP
2016-04-01 15:55:29
date last changed
2021-02-17 04:26:38
@article{b742c43d-c85b-4a2a-ad85-93d7778bf871,
  abstract     = {1 During 1989-93, field studies were conducted in Finland to develop a method based on pheromone traps to monitor and forecast population levels of the European pine sawfly (Neodiprion sertifer Geoffr.) and tree defoliation. <br/><br>
2 Three traps per site were baited with 100 mu g of the N. sertifer sex pheromone, the acetate ester of (2S,3S,7S)-3,7-dimethyl-2-pentadecanol (diprionol), in maturing pine stands in southern and central Finland. In addition, three different dosages (1, 10 and 100 mu g) of the pheromone were tested in 1991-92.<br/><br>
<br/><br>
3 The highest number of males was observed in traps baited with the highest dose. On average, there was a 10-fold increase in trap catch between lure doses.<br/><br>
<br/><br>
4 Density of overwintering eggs was used to evaluate the effectiveness of pheromone traps in predicting sawfly populations. The proportion of healthy overwintering eggs was determined each year. A model based on the number of current shoots on sample trees, diameter at breast height and tree height was formulated to estimate eggs per hectare.<br/><br>
<br/><br>
5 Linear regression analysis produced high coefficients of determination between number of males in traps and density of total eggs in the subsequent generation, when populations were at peak densities. The relationships were not significant for low population densities. The results indicate a risk of model-ate defoliation when the seasonal trap catch is 800-1000 males per trap or higher.},
  author       = {Lyytikainen-Saarenmaa, Päivi and Varama, M and Anderbrant, Olle and Kukkola, M and Kokkonen, A M and Hedenström, Erik and Högberg, Hans-Erik},
  issn         = {1461-9555},
  language     = {eng},
  number       = {1},
  pages        = {7--15},
  publisher    = {Wiley-Blackwell},
  series       = {Agricultural and Forest Entomology},
  title        = {Monitoring the European pine sawfly with pheromone traps in maturing Scots pine stands},
  url          = {http://dx.doi.org/10.1111/j.1461-9555.2006.00275.x},
  doi          = {10.1111/j.1461-9555.2006.00275.x},
  volume       = {8},
  year         = {2006},
}