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Fossil insect eyes ...
Fossil insect eyes shed light on trilobite optics and the arthropod pigment screen
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- Lindgren, Johan (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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- Nilsson, Dan Eric (author)
- Lund University,Lunds universitet,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Molecular Ecology and Evolution Lab,Lund University Research Groups,Lund University, Sweden
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- Sjövall, Peter (author)
- RISE,Kemi och material,RISE Res Inst Sweden, Chem & Mat, Boras, Sweden,Research Institutes of Sweden (RISE)
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- Jarenmark, Martin (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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- Ito, Shosuke (author)
- Fujita Health University School of Health Sciences, Japan,Fujita Hlth Univ, Dept Chem, Sch Hlth Sci, Toyoake, Aichi, Japan
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- Wakamatsu, Kazumasa (author)
- Fujita Health University School of Health Sciences, Japan,Fujita Hlth Univ, Dept Chem, Sch Hlth Sci, Toyoake, Aichi, Japan
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- Kear, Benjamin P., 1975- (author)
- Uppsala universitet,Evolutionsmuseet,Uppsala University: Museum of Evolution,Uppsala University, Sweden
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- Schultz, Bo (author)
- Fur Museum, Museum Salling, Fur, Denmark
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- Sylvestersen, Rene (author)
- Fur Museum, Museum Salling, Fur, Denmark
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- Madsen, Henrik (author)
- Mo Clay Museum, Museum Mors, Nykobing, Denmark
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- LaFountain, James (author)
- University at Buffalo, USA,SUNY Buffalo, Dept Biol Sci, Buffalo, NY USA,The State University of New York
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- Alwmark, Carl (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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- Eriksson, Mats E. (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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- Hall, Stephen A. (author)
- 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
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- Lindgren, Paula (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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- Rodríguez-Meizoso, Irene (author)
- Lund 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
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- Ahlberg, Per (author)
- Lund University,Lunds universitet,Geologiska institutionen,Naturvetenskapliga fakulteten,Department of Geology,Faculty of Science,Lund University, Sweden
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(creator_code:org_t)
- 2019-08-15
- 2019
- English.
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In: Nature. - : Nature Publishing Group. - 0028-0836 .- 1476-4687. ; 573:7772, s. 122-125
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
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Nature
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- By the author/editor
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Lindgren, Johan
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Nilsson, Dan Eri ...
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Sjövall, Peter
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Jarenmark, Marti ...
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Ito, Shosuke
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Wakamatsu, Kazum ...
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show more...
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Kear, Benjamin P ...
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Schultz, Bo
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Sylvestersen, Re ...
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Madsen, Henrik
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LaFountain, Jame ...
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Alwmark, Carl
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Eriksson, Mats E ...
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Hall, Stephen A.
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Lindgren, Paula
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Rodríguez-Meizos ...
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Ahlberg, Per
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Zoology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geochemistry
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biochemistry and ...
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Nature
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RISE
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Uppsala University
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Lund University