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Morphology of powerful suction organs from blepharicerid larvae living in raging torrents

Kang, Victor; Johnston, Richard; van de Kamp, Thomas; Faragó, Tomáš; Federle, Walter

Background: Suction organs provide powerful yet dynamic attachments for many aquatic animals, including octopus, squid, remora, and clingfish. While the functional morphology of suction organs from some cephalopods and fishes has been investigated in detail, there are only few studies on such attachment devices in insects. Here we characterise the morphology and ultrastructure of the suction attachment organs of net-winged midge larvae (genus Liponeura; Diptera: Blephariceridae) – aquatic insects that live on rocks in rapid alpine waterways where flow speeds can reach 3ms⁻¹– using scanning electron microscopy, confocal laser scanning microscopy, and X-ray computed micro-tomography (micro-CT). Furthermore, we study the function of these organs in vivo using interference reflection microscopy.
Results: We identified structural adaptations important for the function of the suction attachment organs in L. cinerascens and L. cordata. First, a dense array of spine-like microtrichia covering each suction disc comes into contact with the substrate upon attachment, analogous to hairy structures on suction organs from octopus, clingfish, and remora fish. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000105551
Veröffentlicht am 27.02.2020
DOI: 10.1186/s40850-019-0049-6
Zitationen: 5
Web of Science
Zitationen: 4
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2019
Sprache Englisch
Identifikator ISSN: 2056-3132
KITopen-ID: 1000105551
HGF-Programm 56.03.30 (POF III, LK 01) Soft Matter, Health and Life Sciences
Erschienen in BMC zoology
Verlag BioMed Central (BMC)
Band 4
Heft 1
Seiten Article No.10
Vorab online veröffentlicht am 18.12.2019
Schlagwörter Aquatic invertebrates, Adhesion, Underwater, Morphology, Microstructures, Sealing, Micro-CT, Biomimetics
Nachgewiesen in Web of Science
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