ArticleMaterials (Basel, Switzerland)2021
Prey Capturing Dynamics and Nanomechanically Graded Cutting Apparatus of Dragonfly Nymph.
Article in Materials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Mandible composition and properties in two selected praying mantises (Insecta, Mantodea).Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- Behavioral Diversity Among Odonata Larvae Increases in Water with Greater Turbidity Under Captivity Conditions.Neotropical entomology · 2024Article
- Mandible elemental composition and mechanical properties from distinct castes of the leafcutter antInterface focus · 2024Article
- Mandible mechanical properties and composition of the larval Glossosoma boltoni (Trichoptera, Insecta).Scientific reports · 2024Article
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3 authors.
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Abstract
Aquatic predatory insects, like the nymphs of a dragonfly, use rapid movements to catch their prey and it presents challenges in terms of movements due to drag forces. Dragonfly nymphs are known to be voracious predators with structures and movements that are yet to be fully understood. Thus, we examine two main mouthparts of the dragonfly nymph (Libellulidae: Insecta: Odonata) that are used in prey capturing and cutting the prey. To observe and analyze the preying mechanism under water, we used high-speed photography and, electron microscopy. The morphological details suggest that the prey-capturing labium is a complex grasping mechanism with additional sensory organs that serve some functionality. The time taken for the protraction and retraction of labium during prey capture was estimated to be 187 ± 54 ms, suggesting that these nymphs have a rapid prey mechanism. The Young's modulus and hardness of the mandibles were estimated to be 9.1 ± 1.9 GPa and 0.85 ± 0.13 GPa, respectively. Such mechanical properties of the mandibles make them hard tools that can cut into the exoskeleton of the prey and also resistant to wear. Thus, studying such mechanisms with their sensory capabilities provides a unique opportunity to design and develop bioinspired underwater deployable mechanisms.
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