Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Priapulid worms from the Cambrian of China shed light on reproduction in early animals

Abstract : In the recent years, exceptional fossil sites have revealed astonishing details on the anatomy, lifestyles and behaviour of Cambrian animals but surprisingly, very little is known about one of their most vital features, reproduction. We describe here in situ eggs (clusters of 3 to 30 oocytes) in the tube-dwelling priapulid worm Paraselkirkia sinica from the Cambrian Stage 3 Xiaoshiba Lagerstätte (ca. 514 Ma, South China). These oocytes were accommodated within paired tubular ovaries located in the posterior half of the primary body cavity as in modern meiobenthic priapulid worms, thus indicating that the general organization of female tubular gonads in priapulid worms has remained virtually unchanged for half a billion years. Our findings provide for the first time, key information on the reproductive organs and strategies of early ecdysozoans, a huge animal clade that dominated Cambrian marine ecosystems and accounts for a large part of today's biodiversity (e.g. arthropods). Moreover, we also emphasize the critical role of ecology on the reproductive strategies and lifestyles of both modern and Cambrian worms.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03455312
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Monday, November 29, 2021 - 3:54:19 PM
Last modification on : Friday, April 1, 2022 - 3:47:28 AM

File

1-s2.0-S1674987121000980-main....
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution - NoDerivatives 4.0 International License

Identifiers

Collections

Citation

Xiao-yu yang, Jean Vannier, Jie yang, Deng Wang, Xi-Guang Zhang. Priapulid worms from the Cambrian of China shed light on reproduction in early animals. Geoscience Frontiers, Elsevier, 2021, 12 (6), pp.101234. ⟨10.1016/j.gsf.2021.101234⟩. ⟨insu-03455312⟩

Share

Metrics

Record views

14

Files downloads

8