title: Morphological and mechanical characterisation of the hindwing nodus from the Libellulidae family of dragonfly (Indonesia).
abstract: In this communication, the morphologies and mechanical characteristics of nodi from the hindwings of seven Indonesian Libellulidae dragonfly species are identified. Geometrical analyses reveal that in all species, the shape of dorsal face resilin is relatively long and thin while ventral face resilin covers a greater surface area than dorsal face resilin, and is shaped like a hook. Finite element analyses reveal that the magnitude of strain energy may differ considerably between species, even though the locations of highest strain energy are usually the same. Importantly, a correlation is found to exist between the mechanical forces that build up in the resilin, the face under investigation (dorsal or ventral) and the elongational shape factor of the resilin.
authors.affiliation: Laboratory of Entomology, Faculty of Biology, Gadjah Mada University, Jl. Teknika Selatan, Sekip Utara, Yogyakarta 55281, Indonesia; Laboratory of Paper Coating and Converting, Centre for Functional Materials, Abo Akademi University, Porthaninkatu 3, Turku 20500, Finland.
authors.forename: Siti
authors.initials: S
authors.lastname: Fauziyah
authors.affiliation: Department of Biosciences, Cell Biology, Abo Akademi University, Biocity, Tykistökatu 6, Turku, Finland.
authors.forename: Catharina
authors.initials: C
authors.lastname: Alam
authors.affiliation: Laboratory of Entomology, Faculty of Biology, Gadjah Mada University, Jl. Teknika Selatan, Sekip Utara, Yogyakarta 55281, Indonesia.
authors.forename: R C H
authors.initials: RC
authors.lastname: Soesilohadi
authors.affiliation: Laboratory of Animal Structure and Development, Faculty of Biology, Gadjah Mada University, Jl. Teknika Selatan, Sekip Utara, Yogyakarta 55281, Indonesia.
authors.forename: Bambang
authors.initials: B
authors.lastname: Retnoaji
authors.affiliation: Laboratory of Paper Coating and Converting, Centre for Functional Materials, Abo Akademi University, Porthaninkatu 3, Turku 20500, Finland. Electronic address: parvez.alam@abo.fi.
authors.forename: Parvez
authors.initials: P
authors.lastname: Alam
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D007214:Indonesia; D019476:Insect Proteins / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence; D063191:Odonata / Q000033:anatomy & histology* / Q000648:ultrastructure; D014921:Wings, Animal / Q000033:anatomy & histology* / Q000648:ultrastructure
chemical_list: D019476:Insect Proteins; C030951:resilin
keywords: Biomechanics; Composite joint; Dragonfly wing; Nodus; Odonata; Resilin