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Confirmation of ovarian follicles in an enantiornithine (Aves) from the Jehol biota using soft tissue analyses
Bailleul, Alida M.1,2; O'Connor, Jingmai1,2; Li, Zhiheng1,2; Wu, Qian1,2; Zhao, Tao3; Monleon, Mario A. Martinez4; Wang, Min1,2; Zheng, Xiaoting5,6
2020-07-28
Source PublicationCOMMUNICATIONS BIOLOGY
Volume3Issue:1Pages:8
Abstract

The remains of ovarian follicles reported in nine specimens of basal birds represents one of the most remarkable examples of soft-tissue preservation in the Early Cretaceous Jehol Biota. This discovery was immediately contested and the structures alternatively interpreted as ingested seeds. Fragments of the purported follicles preserved in an enantiornithine (STM10-12) were extracted and subjected to multiple high-resolution analyses. The structures in STM10-12 possess the histological and histochemical characteristics of smooth muscles fibers intertwined together with collagen fibers, resembling the contractile structure in the perifollicular membrane (PFM) of living birds. Fossilized blood vessels, very abundant in extant PFMs, are also preserved. Energy Dispersive Spectroscopy shows the preserved tissues primarily underwent alumino-silicification, with minor mineralization via iron oxides. No evidence of plant tissue was found. These results confirm the original interpretation as follicles within the left ovary, supporting the interpretation that the right ovary was functionally lost early in avian evolution. Bailleul et al. employ histology, histochemistry and Energy Dispersive Spectroscopy to confirm the presence of disputed ovarian follicles in a specimen of fossil Cretaceous bird. These findings have implications for the evolution of the avian breeding system seen in birds today.

DOI10.1038/s42003-020-01131-9
Indexed BySCI
Language英语
WOS KeywordBLOOD-VESSELS ; EXCEPTIONAL PRESERVATION ; CELLULAR PRESERVATION ; COLLAGEN ; EGGS ; REPRODUCTION ; LAGERSTATTE ; EVOLUTION ; BIRDS
Funding ProjectChinese Academy of Sciences-President's International Fellowship Initiative (CAS-PIFI) program ; National Natural Science Foundation of China[41688103]
WOS Research AreaLife Sciences & Biomedicine - Other Topics ; Science & Technology - Other Topics
WOS SubjectBiology ; Multidisciplinary Sciences
WOS IDWOS:000556713200002
Funding OrganizationChinese Academy of Sciences-President's International Fellowship Initiative (CAS-PIFI) program ; National Natural Science Foundation of China
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/32155
Collection中国科学院南京地质古生物研究所
Corresponding AuthorBailleul, Alida M.
Affiliation1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
4.Charles Univ Prague, Dept Ecol, Fac Sci, CZ-12844 Prague, Czech Republic
5.Linyi Univ, Inst Geol & Paleontol, Linyi 276005, Shandong, Peoples R China
6.Shandong Tianyu Museum Nat, Linyi 273300, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Bailleul, Alida M.,O'Connor, Jingmai,Li, Zhiheng,et al. Confirmation of ovarian follicles in an enantiornithine (Aves) from the Jehol biota using soft tissue analyses[J]. COMMUNICATIONS BIOLOGY,2020,3(1):8.
APA Bailleul, Alida M..,O'Connor, Jingmai.,Li, Zhiheng.,Wu, Qian.,Zhao, Tao.,...&Zheng, Xiaoting.(2020).Confirmation of ovarian follicles in an enantiornithine (Aves) from the Jehol biota using soft tissue analyses.COMMUNICATIONS BIOLOGY,3(1),8.
MLA Bailleul, Alida M.,et al."Confirmation of ovarian follicles in an enantiornithine (Aves) from the Jehol biota using soft tissue analyses".COMMUNICATIONS BIOLOGY 3.1(2020):8.
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