Foraging in larvae of Aeshna juncea (L.): patch use and learning (Anisoptera: Aeshnidae)
Odonatologica , Volume 19 - Issue 1 p. 39- 45
Three laboratory experiments demonstrated that (I) larvae were able to detect patches of high prey density in small aquaria; — (2) an immobile foraging mode was adopted when prey were abundant, and an active mode when prey was absent and larvae were starved; and — (3) larvae learned to prey on dead Chaoborus larvae (Dipt.) after 2 days "training”. Some larvae consumed dead Chaoborus larvae without previous training. — The observations indicate that A. juncea larvae are versatile predators, capable of modifying their foraging behaviour.
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