Abstract
Amphorophora agathonica (Hottes) is the primary vector of aphid-transmitted viruses in red raspberry in the Pacific Northwest region of the United States. To better understand the biology of the aphid, we estimated the lower developmental threshold and studied the seasonal activity of A. agathonica in commercial fields in northern Washington state. In addition, we monitored the spread of raspberry viruses (raspberry latent virus and raspberry leaf mottle virus, RLMV) to determine how rapidly fields became infected and whether there was a relationship between aphid presence and infection. The lower developmental threshold of A. agathonica was estimated to be 2.7°C. In the field, apterous and alate aphid populations began rapidly increasing at ≍800 growing degree-days and peaked at 1,050 growing degree-days. RLMV spread rapidly, with 30-60% of plants in four different commercial fields testing positive after three growing seasons. There was no discernible relationship between the presence or abundance of aphids based on 10 leaves sampled per plant location, and the odds of that plant becoming infected with RLMV.
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Claims 5
Claim · model-written summary
The lower developmental threshold of A. agathonica was estimated at 2.7°C.
- Taxon
- A. agathonica
Amphorophora agathonicae0 - Outcome
- lower developmental thresholde0
- Value
- 2.7°Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lower developmental threshold of A. agathonica was estimated to be 2.7°C.”
Claim · model-written summary
Field aphid populations began rapidly increasing around 800 growing degree-days.
- Taxon
- A. agathonicaAmphorophora agathonicae1
- Outcome
- apterous and alate aphid populationse0
- Direction
- increasinge0
- Value
- ≍800 growing degree-dayse0
- Setting
- northern Washington statee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, apterous and alate aphid populations began rapidly increasing at ≍800 growing degree-days and peaked at 1,050 growing degree-days.”
e1“studied the seasonal activity of A. agathonica in commercial fields in northern Washington state”
Claim · model-written summary
Field aphid populations peaked at 1,050 growing degree-days.
- Taxon
- A. agathonicaAmphorophora agathonicae1
- Outcome
- apterous and alate aphid populationse0
- Direction
- peakede0
- Value
- 1,050 growing degree-dayse0
- Setting
- northern Washington statee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, apterous and alate aphid populations began rapidly increasing at ≍800 growing degree-days and peaked at 1,050 growing degree-days.”
e1“studied the seasonal activity of A. agathonica in commercial fields in northern Washington state”
Claim · model-written summary
After three growing seasons, 30-60% of raspberry plants in four commercial fields tested positive for RLMV.
- Taxon
- Red Raspberry
_Rubus_idaeus_-_Feuillage.jpg?width=60)
Rubus idaeust0 - Interactor
- raspberry leaf mottle virusRaspberry leaf mottle viruse1pathogen
- Outcome
- testing positivee0
- Value
- 30-60%e0
- Qualifier
- after three growing seasonse0
- Setting
- commercial fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Rubus_idaeus_-_Feuillage.jpg?width=500)
Verbatim
e0“RLMV spread rapidly, with 30-60% of plants in four different commercial fields testing positive after three growing seasons.”
e1“raspberry leaf mottle virus, RLMV”
t0“Red Raspberry”
Claim · model-written summary
Aphid presence or abundance had no discernible relationship with the odds of raspberry infection by RLMV under the leaf sampling scheme.
- Taxon
- Red RaspberryRubus idaeust0
- Interactor
- aphidsAphidomorphae0pest
- Second interactor
- RLMVRaspberry leaf mottle viruse0pathogen
- Outcome
- odds of that plant becoming infected with RLMVe0
- Direction
- no discernible relationshipe0
- Qualifier
- based on 10 leaves sampled per plant locatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no discernible relationship between the presence or abundance of aphids based on 10 leaves sampled per plant location, and the odds of that plant becoming infected with RLMV.”
t0“Red Raspberry”