Claim · model-written summary
Estimated intrinsic increase for S. avenae ranged from 0.0015 to 0.13 on ears.
- Taxon
- winter wheat
Triticum aestivume2 - Organ / stage
- earse0
- Interactor
- S. avenae
Sitobion avenaee0pest - Outcome
- intrinsic rate of increasee1
- Value
- 0.0015–0.13e0
Not reportedMaterialGeneCompoundSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.00078–0.0061 and 0.0015–0.13 for S. avenae , on leaves and ears respectively”
e1“intrinsic rate of increase”
e2“on winter wheat”
Title
Natural enemy ravine revisited: the importance of sample size for determining population growth
Vojtěch Jarošík; Alois Honěk; Anthony F. G. Dixon Ecological Entomology 2003. doi:10.1046/j.1365-2311.2003.00485.x
Other claims from this paper (10)
- Observation At low aphid densities, growth was undetectable in individual plots.
- Observation At high densities, aphid populations grew exponentially in individual plots.
- Association At high densities, aphid growth rates did not decline as density increased in individual plots.
- Observation Pooled plot data consistently showed significant aphid growth.
- Association Growth rates in pooled data declined significantly at the highest densities.
- Observation Estimated intrinsic increase for M. dirhodum ranged from 0.010 to 0.026.
- Observation Estimated intrinsic increase for R. padi ranged from 0.0071 to 0.011.
- Observation Estimated intrinsic increase for S. avenae ranged from 0.00078 to 0.0061 on leaves.
- Mechanism The authors attributed apparent absent growth at low plot densities to small samples.
- Mechanism The authors concluded that the natural enemy ravine reflects undetectable increase at low densities unless samples are very large.