Reference : Searching and oviposition behavior of aphidophagous hoverflies (Diptera: Syrphidae): ...
Scientific journals : Article
Life sciences : Entomology & pest control
Life sciences : Environmental sciences & ecology
Searching and oviposition behavior of aphidophagous hoverflies (Diptera: Syrphidae): a review
Almohamad, Raki [ > > ]
Verheggen, François mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Haubruge, Eric mailto [Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech - Entomologie fonctionnelle et évolutive >]
Biotechnologie, Agronomie, Société et Environnement
Presses Agronomiques de Gembloux
Yes (verified by ORBi)
[en] Aphidophagous hoverflies ; foraging and oviposition behavior ; Syrphidae ; host choice ; prey patch quality ; Episyrphus balteatus ; semiochemicals
[en] Aphidophagous hoverflies forage according two different host-finding mechanisms: they forage for suitable food sources (for their energy-expensive hovering flight, and for protein to mature their reproductive system), and for suitable oviposition sites. Syrphids are highly mobile, enabling them to lay eggs over large areas, and to locate aphid colonies earlier in the season than other aphidophaga. The result is that most syrphid eggs tend to be laid close to aphid colonies. The choice of oviposition sites may be crucial for offspring performance because the neonate larvae have limited dispersal ability. Selection of aphid patches should therefore reflect nutritional value, risk of predation and competition pressure. Several factors are known to affect the choice of oviposition site: habitat, host plant, aphid species, aphid availability, semiochemicals, the presence of intra-or interspecific competitors and female age. We review here the available information on these factors in order to understand the mechanisms of decision-making by syrphid females during their egg-laying behavior, a crucial aspect of their effective use in strategies of the biological control of aphids.

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