Details
| Original language | English |
|---|---|
| Pages (from-to) | 141-149 |
| Number of pages | 9 |
| Journal | Agricultural and forest entomology |
| Volume | 20 |
| Issue number | 2 |
| Publication status | Published - May 2018 |
Abstract
Most crop fields are annually cleared, including arthropod populations. Recolonization depends on the source habitat presence in the landscape and often is affected by weather conditions. The present study identified source habitats and the effects of temperature and prevailing wind direction on colonization of Brussels sprouts by pests and their natural enemies. We sampled arthropods on standardized monitoring plants in 18 landscapes with different areas of potential source habitats. Most abundant pests and antagonists were Aleyrodes proletella, Brevicoryne brassicae, Plutella xylostella and syrphid larvae. Variation in A. proletella colonization was best explained by the upwind area of oilseed rape (positive effect) and temperature (negative effect). Variation in B. brassicae colonization was best explained by the downwind area of oilseed rape (positive effect), whereas no effects on P. xylostella were found. Syrphid colonization was affected by prey abundance only (positive effect). The results of the present study suggest that A. proletella was transported downwind, whereas B. brassicae located host plants during an upwind flight for approximately 1 km. This is remarkable for aphids with often limited upwind flight ability. Consideration of prevailing wind directions improves forecasting of the colonization intensity by pests from important source habitats.
Keywords
- Brassica crop, cabbage aphid, cabbage whitefly, diamondback moth, hoverfly, landscape configuration, spillover, wind dispersal
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Forestry
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Insect Science
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In: Agricultural and forest entomology, Vol. 20, No. 2, 05.2018, p. 141-149.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Wind-modulated landscape effects on colonization of Brussels sprouts by insect pests and their syrphid antagonists
AU - Ludwig, Martin
AU - Schlinkert, Hella
AU - Meyhöfer, Rainer
N1 - Funding information: We thank the 18 farmers and their staff for support. We also thank André Brun, Sergej Gulidov, Seraphine Herrmann, Robert Lessing, Timo Michel, Nils Plump, Hans-Joachim Seelbinder, Florian Vogt, Anna Walter and Wael Yakti for their help in the field and laboratory; Péter Batáry for advice; and Hans-Michael Poehling and three anonymous reviewers for their comments and suggestions. We thank our project partners at Julius Kühn-Institut for providing the ATKIS maps. This research is part of the ‘BMBF-AgroClustEr: WeGa-Kompetenznetz Garten-bau’ and was funded by the ‘Bundesministerium für Bildung und Forschung’ (grant number 0315542A).
PY - 2018/5
Y1 - 2018/5
N2 - Most crop fields are annually cleared, including arthropod populations. Recolonization depends on the source habitat presence in the landscape and often is affected by weather conditions. The present study identified source habitats and the effects of temperature and prevailing wind direction on colonization of Brussels sprouts by pests and their natural enemies. We sampled arthropods on standardized monitoring plants in 18 landscapes with different areas of potential source habitats. Most abundant pests and antagonists were Aleyrodes proletella, Brevicoryne brassicae, Plutella xylostella and syrphid larvae. Variation in A. proletella colonization was best explained by the upwind area of oilseed rape (positive effect) and temperature (negative effect). Variation in B. brassicae colonization was best explained by the downwind area of oilseed rape (positive effect), whereas no effects on P. xylostella were found. Syrphid colonization was affected by prey abundance only (positive effect). The results of the present study suggest that A. proletella was transported downwind, whereas B. brassicae located host plants during an upwind flight for approximately 1 km. This is remarkable for aphids with often limited upwind flight ability. Consideration of prevailing wind directions improves forecasting of the colonization intensity by pests from important source habitats.
AB - Most crop fields are annually cleared, including arthropod populations. Recolonization depends on the source habitat presence in the landscape and often is affected by weather conditions. The present study identified source habitats and the effects of temperature and prevailing wind direction on colonization of Brussels sprouts by pests and their natural enemies. We sampled arthropods on standardized monitoring plants in 18 landscapes with different areas of potential source habitats. Most abundant pests and antagonists were Aleyrodes proletella, Brevicoryne brassicae, Plutella xylostella and syrphid larvae. Variation in A. proletella colonization was best explained by the upwind area of oilseed rape (positive effect) and temperature (negative effect). Variation in B. brassicae colonization was best explained by the downwind area of oilseed rape (positive effect), whereas no effects on P. xylostella were found. Syrphid colonization was affected by prey abundance only (positive effect). The results of the present study suggest that A. proletella was transported downwind, whereas B. brassicae located host plants during an upwind flight for approximately 1 km. This is remarkable for aphids with often limited upwind flight ability. Consideration of prevailing wind directions improves forecasting of the colonization intensity by pests from important source habitats.
KW - Brassica crop
KW - cabbage aphid
KW - cabbage whitefly
KW - diamondback moth
KW - hoverfly
KW - landscape configuration
KW - spillover
KW - wind dispersal
UR - http://www.scopus.com/inward/record.url?scp=85020754796&partnerID=8YFLogxK
U2 - 10.1111/afe.12237
DO - 10.1111/afe.12237
M3 - Article
AN - SCOPUS:85020754796
VL - 20
SP - 141
EP - 149
JO - Agricultural and forest entomology
JF - Agricultural and forest entomology
SN - 1461-9555
IS - 2
ER -