Syrphids as natural enemies of cereal aphids in Germany: Aspects of their biology and efficacy in different years and regions

@article{Tenhumberg1995SyrphidsAN,
  title={Syrphids as natural enemies of cereal aphids in Germany: Aspects of their biology and efficacy in different years and regions},
  author={Brigitte Tenhumberg and H-M. Poehling},
  journal={Agriculture, Ecosystems \& Environment},
  year={1995},
  volume={52},
  pages={39-43}
}

Estimating Predatory Efficiency of Episyrphus balteatus (Diptera: Syrphidae) in Cereal Fields

TLDR
A model was developed to estimate the effect of predation by Episyrphus balteatus larvae on aphid populations in fields of winter wheat and isoclines derived from the model were used to estimates the abundance of syrphid larvae necessary to prevent further pest increases.

Biological control of cereal aphids in north america and mediating effects of host plant and habitat manipulations.

The predator and parasitoid fauna associated with cereal aphids is described, emphasizing the fauna associated with classical biological control efforts against the greenbug and Russian wheat aphid.

Intraguild interactions and aphid predators: biological efficiency of Harmonia axyridis and Episyrphus balteatus

TLDR
The results suggest that while the exotic ladybird was more efficient in aphid biological control, larvae and eggs of the native hoverfly species face increased IGP by H. axyridis, which would contribute, as a consequence, to the decline in E. balteatus population following invasion.

Populations of aphid natural enemies in agroecosystems, with special emphasis on the Multicoloured Asian Ladybird Harmonia axyridis Pallas (Coleoptera: Coccinellidae)

TLDR
It is shown that H. axyridis do not invade all Wallonia crops at the same rate because corn and broad bean are more invaded that wheat and potato at both larval and adult stages, and organic farming do not enhance abundance of H.Axyridis but lead to increase the total abundance of aphid natural enemies.

Microorganisms from aphid honeydew attract and enhance the efficacy of natural enemies

TLDR
This report reports the first isolation of a bacterium from the pea aphid Acyrthosiphon pisum honeydew, Staphylococcus sciuri, which acts as a kairomone enhancing the efficiency of aphid natural enemies and has a key role in tritrophic interactions.

Feeding preferences of the aphidophagous hoverfly Sphaerophoria rueppellii affect the performance of its offspring

TLDR
It was found that floral preference of the adults was linked to developmental performance of their offspring, and Sweet alyssum was the flower most frequently visited by syrphid adults, enhancing adult body size and egg-to adult survival of the F1 generation.

The enhancement of conservation biological control through targeted landscape management

TLDR
The results suggest that the most effective method of additional resources for promoting aphidophagous Syrphinae in winter wheat fields is a provision of a mixture of winter refuge and floral resources early in the season, with access to a relatively high abundance of aphids later on.

Field Abundance and Performance of Hoverflies (Diptera: Syrphidae) on Soybean Aphid

TLDR
Syrphid abundance was evaluated across two growing seasons in four soybean fields in east-central Minnesota, indicating that factors other than host suitability are limiting their potential to exert biological control on soybean aphids.

Seasonal Abundance of Aphidophagous Hoverflies (Diptera: Syrphidae) and Their Population Levels In and Outside Mediterranean Sweet Pepper Greenhouses

TLDR
The species composition and the population dynamics of aphidophagous syrphids in polyethylene-covered greenhouses of sweet pepper were studied over a 3-yr period in southeastern Spain, and S. rueppellii seems to be the most adapted to survival in the high temperatures and dry conditions.
...

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TLDR
The high rate of reproduction and the short feeding period make E. balteatus an excellent exploiter of a temporary habitat: a cereal aphid colony.

Estimating Predatory Efficiency of Episyrphus balteatus (Diptera: Syrphidae) in Cereal Fields

TLDR
A model was developed to estimate the effect of predation by Episyrphus balteatus larvae on aphid populations in fields of winter wheat and isoclines derived from the model were used to estimates the abundance of syrphid larvae necessary to prevent further pest increases.

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