Please use this identifier to cite or link to this item: doi:10.22028/D291-29627
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Title: Autofluorescence lifetime variation in the cuticle of the bedbug Cimex lectularius.
Author(s): Reinhardt, Klaus
Breunig, Hans Georg
König, Karsten
Language: English
Title: Arthropod Structure & Development
Volume: 46
Issue: 1
Startpage: 56
Endpage: 62
Publisher/Platform: Elsevier
Year of Publication: 2017
Publikation type: Journal Article
Abstract: The decay time of the fluorescence of excited molecules, called fluorescence lifetime, can provide information about the cuticle composition additionally to widely used spectral characteristics. We compared autofluorescence lifetimes of different cuticle regions in the copulatory organ of females of the bedbug, Cimex lectularius. After two-photon excitation at 720 nm, regions recently characterised as being rich in resilin showed a longer bimodal distribution of the mean autofluorescence lifetime τm (tau-m) at 0.4 ns and 1.0-1.5 ns, while resilin-poor sites exhibited a unimodal pattern with a peak around 0.8 ns. The mean lifetime, and particularly its second component, can be useful to distinguish resilin-rich from resilin-poor parts of the cuticle. The few existing literature data suggest that chitin is unlikely responsible for the main autofluorescent component observed in the resilin-poor areas in our study and that melanin requires further scrutiny. Autofluorescence lifetime measurements can help to characterise properties of the arthropod cuticle, especially when coupled with multiphoton excitation to allow for deeper tissue penetration.
DOI of the first publication: 10.1016/j.asd.2016.11.009
Link to this record: hdl:20.500.11880/28014
ISSN: 1467-8039
Date of registration: 7-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Systems Engineering
Professorship: NT - Prof. Dr. Karsten König
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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