Syrphus balteatus (Syrphidae) - Eiablageverhalten

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Syrphus balteatus (Syrphidae) - Eiablageverhalten
Alternative Title
Syrphus balteatus (Syrphidae) - Egg-Laying Behaviour
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E 2935
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Silent film
IWF (Göttingen)
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Film, 16 mm, 64 m ; F, 6 min

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Weibchen der Schwebfliege suchen Blattlauskolonien zur Eiablage auf. Nach optischer und olfaktorischer Orientierung während des Freifluges erfolgen das Betasten der Läuse mit den Beinen und das Betupfen mit dem Rüssel. Mit der Legeröhre werden Freiräume zwischen den Läusen ertastet und die Eier dort abgelegt. 25 B/s, 50 B/s, 100 B/s.
Syrphus balteatus females which are ready to oviposit manoeuvre between bean plants (Vicia), which are densely infested with black bean lice (Aphis fabae). Rotations of up to 360 degrees made in whirring flight serve as visual orientation and the whirring flights underneath the colonies of plant-lice serve as olfactory orientation. The stream of scent from the plant-lice is drawn in. The following egg-laying behaviour is demonstrated with a number of examples.
Keywords Ackerbohne Laus / Bohnenlaus Blattlaus Schwarze Bohnenlaus Fliege / Schwebfliege Schwebfliege Vicia faba Aphis fabae Syrphus balteatus Flug / Insecta Eiablage / Diptera Schädlingsbekämpfung / biologische biologische Schädlingsbekämpfung biological pest control pest control / biological egg-laying / Diptera flight / Insecta Syrphus balteatus Aphis fabae Vicia faba hover fly black bean aphid aphid broad bean Encyclopaedia Cinematographica

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