Rhynchostreon oyster assemblages across the Central European region: Three types of environment and an alternative view in the intraspecific variability of Rhynchostreon suborbiculatum (Lamarck, 1801)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10474364" target="_blank" >RIV/00216208:11310/24:10474364 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NDUD~gTO3B" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NDUD~gTO3B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cretres.2023.105747" target="_blank" >10.1016/j.cretres.2023.105747</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rhynchostreon oyster assemblages across the Central European region: Three types of environment and an alternative view in the intraspecific variability of Rhynchostreon suborbiculatum (Lamarck, 1801)

Popis výsledku v původním jazyce

The morphological variability in Rhynchostreon suborbiculatum (Lamarck, 1801) is a well-known phenomenon in the Cretaceous palaeobiology. The current study focuses on two morphotypes differentiated by the presence/absence of radial ribs on the apical part of the left valve, while the fusion of palaeoecological and morphological results allows the study of the evolution of R. suborbiculatum under specific environmental conditions. Based on analyses of grain size, concentration of major oxides and oyster taphonomy in five Cenomanian-Turonian oyster-bearing localities, three habitats that differ in substrate, energy level and salinity regime were recognised: the dynamic Cenomanian nearshore environment (environment B), the Turonian hemipelagic environment (environment C) and the Cenomanian-Turonian marginal marine environment influenced by river dynamics (environment A). An analysis of the size distribution and morphotype structures of three palaeopopulations of R. suborbiculatum shows lithofacial dependence in morphotype distribution, indicating substrate granularity and level of environmental energy. The higher prevalence of ribbed morphs in smaller size classes as well as in fine-grained deposits suggests that apical ribbing is an adaptive trait with a stabilising effect, especially during the early growth stages or when colonising low-energy environments with very soft substrates. The distribution of the large size classes, combined with the shell thickness and vaulting, suggest that the compensation provided by the ribs is insufficient in high energy environments, where strong waves, turbulent flow, and higher sedimentation rates are the main selection pressures. Thus, other adaptations, such as body size and massiveness of the shell, become more critical for the survival of individuals.

Název v anglickém jazyce

Rhynchostreon oyster assemblages across the Central European region: Three types of environment and an alternative view in the intraspecific variability of Rhynchostreon suborbiculatum (Lamarck, 1801)

Popis výsledku anglicky

The morphological variability in Rhynchostreon suborbiculatum (Lamarck, 1801) is a well-known phenomenon in the Cretaceous palaeobiology. The current study focuses on two morphotypes differentiated by the presence/absence of radial ribs on the apical part of the left valve, while the fusion of palaeoecological and morphological results allows the study of the evolution of R. suborbiculatum under specific environmental conditions. Based on analyses of grain size, concentration of major oxides and oyster taphonomy in five Cenomanian-Turonian oyster-bearing localities, three habitats that differ in substrate, energy level and salinity regime were recognised: the dynamic Cenomanian nearshore environment (environment B), the Turonian hemipelagic environment (environment C) and the Cenomanian-Turonian marginal marine environment influenced by river dynamics (environment A). An analysis of the size distribution and morphotype structures of three palaeopopulations of R. suborbiculatum shows lithofacial dependence in morphotype distribution, indicating substrate granularity and level of environmental energy. The higher prevalence of ribbed morphs in smaller size classes as well as in fine-grained deposits suggests that apical ribbing is an adaptive trait with a stabilising effect, especially during the early growth stages or when colonising low-energy environments with very soft substrates. The distribution of the large size classes, combined with the shell thickness and vaulting, suggest that the compensation provided by the ribs is insufficient in high energy environments, where strong waves, turbulent flow, and higher sedimentation rates are the main selection pressures. Thus, other adaptations, such as body size and massiveness of the shell, become more critical for the survival of individuals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GC21-30418J" target="_blank" >GC21-30418J: Korelace pozdně křídových sedimentárních archívů severní Sibiře a střední Evropy: záznam skleníkového klimatu vysokých a středních zeměpisných šířek</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Cretaceous Research

ISSN

0195-6671

e-ISSN

1095-998X

Svazek periodika

154

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

25

Strana od-do

105747

Kód UT WoS článku

001112457700001

EID výsledku v databázi Scopus

2-s2.0-85177078124