Počet záznamů: 1
Early developmental stages of a Lower Ordovician marrellid from Morocco suggest simple ontogenetic niche differentiation in early euarthropods
- 1.
SYSNO ASEP 0575964 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Early developmental stages of a Lower Ordovician marrellid from Morocco suggest simple ontogenetic niche differentiation in early euarthropods Tvůrce(i) Laibl, Lukáš (GLU-S) RID, ORCID, SAI
Gueriau, P. (CH)
Saleh, F. (CH)
Pérez-Peris, F. (US)
Lustri, L. (CH)
Drage, H. B. (CH)
Bath Enright, O. G. (DE)
Potin, G. J.-M. (CH)
Daley, A. C. (CH)Číslo článku 1232612 Zdroj.dok. Frontiers in Ecology and Evolution. - : Frontiers Research Foundation - ISSN 2296-701X
Roč. 11, 25 September (2023)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova Euarthropoda ; development ; niche differentiation ; Ordovician ; Morocco ; marrellida Obor OECD Paleontology CEP GJ20-23550Y GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora GLU-S - RVO:67985831 UT WOS 001079834800001 EID SCOPUS 85173731869 DOI https://doi.org/10.3389/fevo.2023.1232612 Anotace Early developmental stages of euarthropods are exceptionally rare in the fossil record. This hampers our understanding of the biology, phylogeny, and development of this extremely diverse metazoan group. Herein, we use classical paleontological methods in combination with synchrotron X-ray microtomography to explore the morphology in ca. 480 million-year-old early developmental stages of the Lower Ordovician Fezouata Shale marrellid euarthropod. These stages range between 3.8 and 5.3 mm in length and are characterized by three distinct pairs of gently curved spines that projects from the head shield. The first pair of cephalic appendages are represented by uniramous antenullae of a sensory function. The second pair of cephalic appendages is robust, and had an anchoring or stabilizing function. The third cephalic appendage pair is composed of long cylindrical podomeres and was used for walking. The trunk appendages are biramous and consist of an endopod and a lamellate exopod. Two anterior trunk endopods are composed of long slender podomeres and were used for walking, while the more posterior trunk endopods bear robust endites and associated setae and were used for food gathering. The trunk of the earliest developmental stages is composed of thirteen segments, in contrast to more than 22 segments in the adult trunk. The similar appendage morphology and differentiation along the body is evident in adult individuals of the Fezouata marrellid, suggesting these different developmental stages shared similar methods of locomotion and food processing. Given that adults and juveniles are often preserved in the same or nearby sites, the niche differentiation between these life stages would be the result of the absolute smaller appendage size in immature stages compared to larger adults, effectively differentiating the size of food resources consumed by each. In addition, the delicate setae present in the posterior trunk appendages of early developmental stages might have been used to capture smaller food particles. This simple mode of ontogenetic niche differentiation might have been common in the early diverging euarthropod groups. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Rok sběru 2024 Elektronická adresa https://www.frontiersin.org/articles/10.3389/fevo.2023.1232612/full
Počet záznamů: 1