Abstract
Abstract Understanding the cues used by insects to select their hosts is essential for developing sustainable control strategies, particularly for plant disease vectors. Pear psyllids ( Cacopsylla pyri ) are vectors of the bacterial disease pear decline caused by ‘ Candidatus Phytoplasma pyri’. Yellow sticky traps are typically used to monitor pest insects, but they are non‐specific and capture many beneficial insects, too. Against the background of improving visual traps, this research aimed to investigate the colour choice behaviour of C. pyri . Our first approach was to screen insect colour preferences by performing choice assays with different LED colour wavelengths in a small‐scale choice arena under controlled conditions. Over six LEDs tested, there was a strong significant preference of C. pyri for green 1 (532 nm) followed by green 2 (549 nm). Yellow (576 nm), orange (593 nm), red 1 (619 nm) and red 2 (633 nm) were less attractive than green. Subsequently, the trapping of pear psyllids was tested in the field using newly developed traps covered with transparent‐coloured PVC sheets with a similar wavelength of the preferred LEDs. Red and completely transparent traps have been used as control and combined in randomized blocks in a pear orchard. Field trials revealed that green traps ranging from 525 to 537 nm attracted significantly more pear psyllids than longer wavelength green (543 nm), red and transparent ones. The construction of specific green‐coloured sticky traps seems promising for improving psyllid trapping, especially during an early infestation at low population densities. Thus, these visual traps should be considered in future and integrated into psyllid monitoring as part of integrated pest management.
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Claims 5
Claim · model-written summary
C. pyri significantly preferred green 1 LED at 532 nm.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- green 1 (532 nm)e0
- Interactor
- C. pyri
Cacopsylla pyrie0pest - Outcome
- preferencee0
- Value
- 532 nme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“there was a strong significant preference of C. pyri for green 1 (532 nm) followed by green 2 (549 nm).”
t0“pear psyllid”
Claim · model-written summary
Green 2 at 549 nm ranked second in C. pyri preference.
- Taxon
- pearPyrus communist0
- Treatment
- green 2 (549 nm)e0
- Interactor
- C. pyriCacopsylla pyrie0pest
- Outcome
- preferencee0
- Value
- 549 nme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a strong significant preference of C. pyri for green 1 (532 nm) followed by green 2 (549 nm).”
t0“pear psyllid”
Claim · model-written summary
Yellow, orange and two red LED wavelengths were less attractive than green to C. pyri.
- Taxon
- pearPyrus communist0
- Interactor
- pear psyllidt0pest
- Outcome
- attractivee0
- Direction
- lesse0
- Comparator
- greene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yellow (576 nm), orange (593 nm), red 1 (619 nm) and red 2 (633 nm) were less attractive than green.”
t0“pear psyllid”
Claim · model-written summary
Field traps at 525 to 537 nm attracted significantly more pear psyllids than 543 nm green, red or transparent traps.
- Taxon
- pearPyrus communist0
- Treatment
- green traps ranging from 525 to 537 nme0
- Interactor
- pear psyllidse0pest
- Outcome
- pear psyllidse0
- Direction
- moree0
- Comparator
- longer wavelength green (543 nm), red and transparent onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green traps ranging from 525 to 537 nm attracted significantly more pear psyllids than longer wavelength green (543 nm), red and transparent ones.”
t0“pear psyllid”
Claim · model-written summary
The authors recommend integrating green visual traps into psyllid monitoring.
- Taxon
- pearPyrus communist0
- Outcome
- integrated into psyllid monitoring as part of integrated pest managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these visual traps should be considered in future and integrated into psyllid monitoring as part of integrated pest management.”
t0“pear psyllid”
The same questions in other papers
trap barrier · pest · Pyrus communis (pear)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.