Abstract
Orius insidiosus (Say) and O. pumilio (Champion) were confirmed to be sympatric in north central Florida as the major predators of the Florida flower thrips, Frankliniella bispinosa (Morgan), on flowers of Queen Anne's lace, Daucus carota L. and false Queen Anne's lace, Ammi majus L. F. bispinosa was the predominant thrips observed on both flowers but colonized D. carota to a greater extent and earlier in the season than A. majus. Despite differences in the abundance of F. bispinosa on the two plants, neither Orius species showed host plant affinities. Population profiles for the thrips and Orius spp. followed a density dependent response of prey to predator with a large initial prey population followed by a rapid decline as the predator populations increased. The temporal increases in Orius spp. populations during the flowering season suggest that they were based on reproductive activity. As observed in a previous study, O. insidiosus had a larger population than O. pumilio and also had a predominantly male population on the flowers. By examining carcasses of the prey, there appeared to be no sexual preference of the thrips as prey by the Orius spp. as the prey pattern followed the demographics of the thrips sex ratio. Few immatures of either thrips or Orius spp. were observed on D. carota or A. majus, which suggests that oviposition and nymphal development occurred elsewhere. Based on these findings, D. carota and A. majus could serve as a banker plant system for Orius spp.
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Claims 11
Claim · model-written summary
Orius insidiosus and O. pumilio were sympatric major predators of Frankliniella bispinosa on the flowers.
- Taxon
- Daucus carota L.
Daucus carotae0 - Interactor
- Frankliniella bispinosaFrankliniella bispinosae0pest
- Second interactor
- Orius insidiosus
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Orius insidiosuse0biocontrol_agent - Outcome
- major predators of the Florida flower thripse0
- Setting
- north central Floridae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Orius insidiosus (Say) and O. pumilio (Champion) were confirmed to be sympatric in north central Florida as the major predators of the Florida flower thrips, Frankliniella bispinosa (Morgan), on flowers of Queen Anne's lace, Daucus carota L. and false Queen Anne's lace, Ammi majus L.”
Claim · model-written summary
F. bispinosa was the predominant thrips on both plants.
- Interactor
- F. bispinosaFrankliniella bispinosae0pest
- Outcome
- predominant thripse0
Verbatim
e0“F. bispinosa was the predominant thrips observed on both flowers”
t0“Apiaceae”
Claim · model-written summary
F. bispinosa colonized D. carota more extensively and earlier than A. majus.
- Taxon
- D. carotaDaucus carotae0
- Outcome
- colonized D. carotae0
- Direction
- greater extent and earliere0
- Comparator
- A. majuse0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“colonized D. carota to a greater extent and earlier in the season than A. majus”
Claim · model-written summary
Neither Orius species showed host-plant affinity.
- Outcome
- host plant affinitiese0
OriusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither Orius species showed host plant affinities”
t0“Apiaceae”
Claim · model-written summary
Thrips prey abundance declined rapidly as Orius predator populations increased.
Not reportedInteractor
Verbatim
e0“a large initial prey population followed by a rapid decline as the predator populations increased”
t0“Apiaceae”
Claim · model-written summary
Temporal Orius increases during flowering suggest reproductive activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The temporal increases in Orius spp. populations during the flowering season suggest that they were based on reproductive activity”
t0“Apiaceae”
Claim · model-written summary
O. insidiosus had a larger flower population than O. pumilio.
- Interactor
- O. insidiosusOrius insidiosuse0biocontrol_agent
- Second interactor
- O. pumilioOrius pumilioe0biocontrol_agent
- Outcome
- O. insidiosus had a larger populatione0
- Direction
- largere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“O. insidiosus had a larger population than O. pumilio”
t0“Apiaceae”
Claim · model-written summary
The O. insidiosus flower population was predominantly male.
- Outcome
- predominantly male populatione0
Verbatim
e0“a predominantly male population on the flowers”
t0“Apiaceae”
Claim · model-written summary
Orius predation showed no apparent thrips-sex preference.
- Outcome
- no sexual preference of the thrips as preye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there appeared to be no sexual preference of the thrips as prey by the Orius spp.”
t0“Apiaceae”
Claim · model-written summary
Few thrips or Orius immatures occurred on either plant, suggesting development elsewhere.
- Taxon
- D. carotaDaucus carotae0
- Outcome
- Few immatures of either thrips or Orius spp.e0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Few immatures of either thrips or Orius spp. were observed on D. carota or A. majus, which suggests that oviposition and nymphal development occurred elsewhere”
Claim · model-written summary
The authors suggest D. carota and A. majus as banker plants for Orius.
- Taxon
- D. carotaDaucus carotae0
- Outcome
- banker plant system for Orius spp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“D. carota and A. majus could serve as a banker plant system for Orius spp.”