Imaging and spectral analysis of autofluorescence patterns in larval head structures of mosquito vectors

Francesca Scolari; Alessandro Girella; Anna Cleta Croce

doi:10.4081/ejh.2022.3462

Authors

Francesca Scolari

https://orcid.org/0000-0003-3085-9038

Institute of Molecular Genetics, Italian National Research Council (CNR), Pavia, Italy.

Alessandro Girella

https://orcid.org/0000-0002-2443-2751

Department of Chemistry – C.S.G.I., University of Pavia; Centro Interdipartimentale di Studi e Ricerche per la Conservazione del Patrimonio Culturale (CISRiC), University of Pavia, Italy.

Anna Cleta Croce

leta@igm.cnr.it

https://orcid.org/0000-0001-8996-2895

Institute of Molecular Genetics, Italian National Research Council (CNR), Pavia, Italy.

Autofluorescence (AF) in mosquitoes is currently poorly explored, despite its great potential as a marker of body structures and biological functions. Here, for the first time AF in larval heads of two mosquitoes of key public health importance, Aedes albopictus and Culex pipiens, is studied using fluorescence imaging and spectrofluorometry, similarly to a label-free histochemical approach. In generally conserved distribution patterns, AF shows differences between mouth brushes and antennae of the two species. The blue AF ascribable to resilin at the antennal bases, more extended in Cx. pipiens, suggests a potential need to support different antennal movements. The AF spectra larger in Cx. pipiens indicate a variability in material composition and properties likely relatable to mosquito biology, including diverse feeding and locomotion behaviours with implications for vector control.

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How to Cite

Scolari, F., Girella, A., & Croce, A. C. (2022). Imaging and spectral analysis of autofluorescence patterns in larval head structures of mosquito vectors. European Journal of Histochemistry, 66(4). https://doi.org/10.4081/ejh.2022.3462

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