Expanding the eggshell colour gamut : uroerythrin and bilirubin from tinamou (Tinamidae) eggshells
To date, only two pigments have been identified in avian eggshells: rusty-brown protoporphyrin IX and blue-green biliverdin IXα. Most avian eggshell colours can be produced by a mixture of these two tetrapyrrolic pigments. However, tinamou (Tinamidae) eggshells display colours not easily rationalised by combination of these two pigments alone, suggesting the presence of other pigments. Here, through extraction, derivatization, spectroscopy, chromatography, and mass spectrometry, we identify two novel eggshell pigments: yellow-brown tetrapyrrolic bilirubin from the guacamole-green eggshells of Eudromia elegans, and red-orange tripyrrolic uroerythrin from the purplish-brown eggshells of Nothura maculosa. Both pigments are known porphyrin catabolites and are found in the eggshells in conjunction with biliverdin IXα. A colour mixing model using the new pigments and biliverdin reproduces the respective eggshell colours. These discoveries expand our understanding of how eggshell colour diversity is achieved. We suggest that the ability of these pigments to photo-degrade may have an adaptive value for the tinamous.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:10 |
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| Enthalten in: |
Scientific reports - 10(2020), 1 vom: 09. Juli, Seite 11264 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Hamchand, Randy [VerfasserIn] |
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| Links: |
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| Themen: |
Bilirubin |
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| Anmerkungen: |
Date Completed 22.01.2021 Date Revised 09.07.2021 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1038/s41598-020-68070-7 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM312239955 |
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| 245 | 1 | 0 | |a Expanding the eggshell colour gamut |b uroerythrin and bilirubin from tinamou (Tinamidae) eggshells |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a To date, only two pigments have been identified in avian eggshells: rusty-brown protoporphyrin IX and blue-green biliverdin IXα. Most avian eggshell colours can be produced by a mixture of these two tetrapyrrolic pigments. However, tinamou (Tinamidae) eggshells display colours not easily rationalised by combination of these two pigments alone, suggesting the presence of other pigments. Here, through extraction, derivatization, spectroscopy, chromatography, and mass spectrometry, we identify two novel eggshell pigments: yellow-brown tetrapyrrolic bilirubin from the guacamole-green eggshells of Eudromia elegans, and red-orange tripyrrolic uroerythrin from the purplish-brown eggshells of Nothura maculosa. Both pigments are known porphyrin catabolites and are found in the eggshells in conjunction with biliverdin IXα. A colour mixing model using the new pigments and biliverdin reproduces the respective eggshell colours. These discoveries expand our understanding of how eggshell colour diversity is achieved. We suggest that the ability of these pigments to photo-degrade may have an adaptive value for the tinamous | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, U.S. Gov't, Non-P.H.S. | |
| 650 | 7 | |a Pigments, Biological |2 NLM | |
| 650 | 7 | |a Porphyrins |2 NLM | |
| 650 | 7 | |a Pyrroles |2 NLM | |
| 650 | 7 | |a uroerythrin |2 NLM | |
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| 700 | 1 | |a Hanley, Daniel |e verfasserin |4 aut | |
| 700 | 1 | |a Prum, Richard O |e verfasserin |4 aut | |
| 700 | 1 | |a Brückner, Christian |e verfasserin |4 aut | |
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