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  • Lindgren, JohanLund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden (författare)

Fossil insect eyes shed light on trilobite optics and the arthropod pigment screen

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-08-15
  • Nature Publishing Group,2019
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:ri-39862
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-39862URI
  • https://doi.org/10.1038/s41586-019-1473-zDOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-394197URI
  • https://lup.lub.lu.se/record/a72dafb0-6b95-4e45-9895-ea6c967862e0URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Funding details: Vetenskapsrådet, VR, 642-2014-3773; Funding text 1: C. Tell processed our extant tiger crane-fly samples; R. Hauff and G. Dyke provided comparative ink sacs from fossil squids; and C. Rasmussen prepared the histological sections, performed the Fontana–Masson staining, and assisted during the transmission electron microscopy analysis. Financial support for this project was provided by a Swedish Research Council Grant for Distinguished Young Researchers (642-2014-3773) to J.L.
  • Fossilized eyes permit inferences of the visual capacity of extinct arthropods1–3. However, structural and/or chemical modifications as a result of taphonomic and diagenetic processes can alter the original features, thereby necessitating comparisons with modern species. Here we report the detailed molecular composition and microanatomy of the eyes of 54-million-year-old crane-flies, which together provide a proxy for the interpretation of optical systems in some other ancient arthropods. These well-preserved visual organs comprise calcified corneal lenses that are separated by intervening spaces containing eumelanin pigment. We also show that eumelanin is present in the facet walls of living crane-flies, in which it forms the outermost ommatidial pigment shield in compound eyes incorporating a chitinous cornea. To our knowledge, this is the first record of melanic screening pigments in arthropods, and reveals a fossilization mode in insect eyes that involves a decay-resistant biochrome coupled with early diagenetic mineralization of the ommatidial lenses. The demonstrable secondary calcification of lens cuticle that was initially chitinous has implications for the proposed calcitic corneas of trilobites, which we posit are artefacts of preservation rather than a product of in vivo biomineralization4–7. Although trilobite eyes might have been partly mineralized for mechanical strength, a (more likely) organic composition would have enhanced function via gradient-index optics and increased control of lens shape.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Nilsson, Dan EricLund University,Lunds universitet,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Molecular Ecology and Evolution Lab,Lund University Research Groups,Lund University, Sweden(Swepub:lu)zool-dni (författare)
  • Sjövall, PeterRISE,Kemi och material,RISE Res Inst Sweden, Chem & Mat, Boras, Sweden,Research Institutes of Sweden (RISE)(Swepub:lu)ftf-psa (författare)
  • Jarenmark, MartinLund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden(Swepub:lu)inor-mja (författare)
  • Ito, ShosukeFujita Health University School of Health Sciences, Japan,Fujita Hlth Univ, Dept Chem, Sch Hlth Sci, Toyoake, Aichi, Japan (författare)
  • Wakamatsu, KazumasaFujita Health University School of Health Sciences, Japan,Fujita Hlth Univ, Dept Chem, Sch Hlth Sci, Toyoake, Aichi, Japan (författare)
  • Kear, Benjamin P.,1975-Uppsala universitet,Evolutionsmuseet,Uppsala University: Museum of Evolution,Uppsala University, Sweden(Swepub:uu)benke618 (författare)
  • Schultz, BoFur Museum, Museum Salling, Fur, Denmark (författare)
  • Sylvestersen, ReneFur Museum, Museum Salling, Fur, Denmark (författare)
  • Madsen, HenrikMo Clay Museum, Museum Mors, Nykobing, Denmark (författare)
  • LaFountain, JamesUniversity at Buffalo, USA,SUNY Buffalo, Dept Biol Sci, Buffalo, NY USA,The State University of New York (författare)
  • Alwmark, CarlLund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden(Swepub:lu)geol-cal (författare)
  • Eriksson, Mats E.Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden(Swepub:lu)geol-mer (författare)
  • Hall, Stephen A.Lund University,Lunds universitet,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)soli-shh (författare)
  • Lindgren, PaulaLund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden(Swepub:lu)pa7274li (författare)
  • Rodríguez-Meizoso, IreneLund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)orga-irg (författare)
  • Ahlberg, PerLund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden(Swepub:lu)geol-pah (författare)
  • Geologiska institutionenNaturvetenskapliga fakulteten (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Nature: Nature Publishing Group573:7772, s. 122-1250028-08361476-4687

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