Olfactory attractiveness of flowering plants to the parasitoid Microplitis mediator: potential implications for biological control

  title={Olfactory attractiveness of flowering plants to the parasitoid Microplitis mediator: potential implications for biological control},
  author={Elodie Belz and Mathias K{\"o}lliker and Oliver Balmer},
In agricultural landscapes, the lack of floral nectar can be a major difficulty for nectar feeding parasitoids. This problem can be reduced by the addition of suitable wildflowers. To date, flowers have mainly been studied in terms of effects on parasitoid fitness, not taking into account the essential role of flower attractiveness for foraging parasitoids. This study experimentally tested the olfactory attractiveness of five wildflowers (bishop’s weed, cornflower, buckwheat, candytuft, and… 

Contrasting olfactory responses of two egg parasitoids to buckwheat floral scent are reflected in field parasitism rates

It is concluded that buckwheat strips can influence intraguild competition and hypothesize that the effect was mediated by floral volatiles.

Chemical ecology meets conservation biological control: identifying plant volatiles as predictors of floral resource suitability for an egg parasitoid of stink bugs

The authors' results showed that access to buckwheat and basil flowers increased the parasitoid offspring, and integrating chemo-ecological methods into conservation biological control allowed us to identify a potential resource plant and attractive compounds for field studies.

Attractiveness and nutritional effects of flowers on the survival of a dipteran pest and its parasitoids

Flower addition is commonly used worldwide to benefit parasitoids and improve conservation biological control of pests. However, biological control enhancement via flower addition depends on both

Floral Odors Can Interfere With the Foraging Behavior of Parasitoids Searching for Hosts

Floral odors can act as background pollutants decreasing the attractiveness of chemical blends used by natural enemies to locate their hosts.

Color, odor, and species preferences of Copidosoma bakeri to prospective cover crops to enhance control of cutworms

Life expectancy was increased when the wasps were provided floral resources compared to the absence of a food source, and later planting dates and mixed‐species plantings of cover crops resulted in flowering times that better coincided with native wasp emergence.

Olfactory information use for foraging in "Microplitis mediator", a parasitoid of the cabbage moth "Mamestra brassicae"

This study has shown that cornflower is a very promising floral subsidy, and indicates that M. mediator is able to use olfactory cues to identify potential food sources and has evolved preferences that could be exploited in biological control.

Biodiversity enhancement and utilization – Pest control in brassicas

Experiments were conducted to test the olfactory attractiveness of different flowers as well as the influence of their nectar on the regulation of the cabbage moth and on the lifespan and parasitation performance of its antagonists (egg and larval parasitoids).



Selective flowers to enhance biological control of cabbage pests by parasitoids

The Sweet Tooth of Adult Parasitoid Cotesia rubecula: Ignoring Hosts for Nectar?

This work investigated the tendency of flowers and hosts to attract 1-day-old female Cotesia rubecula Marshall (Hymenoptera: Braconidae) with different feeding histories in a wind tunnel and found that well-fed wasps exhibited a preference for hosts and unfed wasps visited hosts and flowers in equal proportions.

Floral resources impact longevity and oviposition rate of a parasitoid in the field.

The longevity and per capita fecundity of naturally occurring Diadegma insulare foraging in cabbage plots with and without borders of flowering buckwheat, Fagopyrum esculentum, as well as relationships between longevity, fecundy, sugar feeding and parasitism rates on larvae of the diamondback moth, Plutella xylostella are studied.

Orientation of the parasitic wasp, Cotesia vestalis (Haliday) (Hymenoptera: Braconidae), to visual and olfactory cues of field mustard flowers, Brassica rapa L. (Brassicaceae), to exploit food sources

Results indicate that parasitoids orientate to flowers using visual and olfactory cues, respectively, depending on their own dietary state, as well as how they find and exploit food sources.