The first evidence of bioerosion in chitinous lacustrine microfossils from glacial lakes (Late Pleistocene and holocene, Bohemian forest)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F20%3A10134959" target="_blank" >RIV/00023272:_____/20:10134959 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/20:10418427

Výsledek na webu

<a href="https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/35/8/317/590581/THE-FIRST-EVIDENCE-OF-BIOEROSION-IN-CHITINOUS?redirectedFrom=fulltext" target="_blank" >https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/35/8/317/590581/THE-FIRST-EVIDENCE-OF-BIOEROSION-IN-CHITINOUS?redirectedFrom=fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2110/palo.2020.008" target="_blank" >10.2110/palo.2020.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The first evidence of bioerosion in chitinous lacustrine microfossils from glacial lakes (Late Pleistocene and holocene, Bohemian forest)

Popis výsledku v původním jazyce

Microbioerosion structures are a common sign of microbial activity known mainly from marineenvironments and calcareous substrates, or from pollen records. However, the same phenomenon has been overlookedin animal fossils preserved in lake sediments. We studied 430 fragments of chitinous microfossils from three central European glacial lakes and detected microboring structures in approximately 10%. The microfossils belong to twosize groups: (1) spherical objects with lengths ranging from 50 to 300lm that are probably microturbelarian(Turbellaria: Rhabdocoela) cocoons, and (2) larger remnants (up to 2 mm long) of caddisfly (Insecta: Trichoptera)frontoclypeal apotomes. Four microbioerosion morphotypes were distinguished: (1) small holes (,0.6lm) orientedperpendicular to microfossil walls, likely produced by bacteria or fungi; (2) simple meandering tunnels and; (3)asterisk-like tunnel structures produced by fungi and/or fungus-like organisms; and (4) abrasions caused by biofilms.The maximum diameter of the simple holes and both tunnel structures depended on host-microfossil size: a higherdiversity of microbioerosions was found on larger chitinous fragments. We propose that the good preservation ofmicrofossils in the studied sediment samples might be due to rapid transport to the anoxic profundal zone or by rapidburial in anoxic sediments.

Název v anglickém jazyce

The first evidence of bioerosion in chitinous lacustrine microfossils from glacial lakes (Late Pleistocene and holocene, Bohemian forest)

Popis výsledku anglicky

Microbioerosion structures are a common sign of microbial activity known mainly from marineenvironments and calcareous substrates, or from pollen records. However, the same phenomenon has been overlookedin animal fossils preserved in lake sediments. We studied 430 fragments of chitinous microfossils from three central European glacial lakes and detected microboring structures in approximately 10%. The microfossils belong to twosize groups: (1) spherical objects with lengths ranging from 50 to 300lm that are probably microturbelarian(Turbellaria: Rhabdocoela) cocoons, and (2) larger remnants (up to 2 mm long) of caddisfly (Insecta: Trichoptera)frontoclypeal apotomes. Four microbioerosion morphotypes were distinguished: (1) small holes (,0.6lm) orientedperpendicular to microfossil walls, likely produced by bacteria or fungi; (2) simple meandering tunnels and; (3)asterisk-like tunnel structures produced by fungi and/or fungus-like organisms; and (4) abrasions caused by biofilms.The maximum diameter of the simple holes and both tunnel structures depended on host-microfossil size: a higherdiversity of microbioerosions was found on larger chitinous fragments. We propose that the good preservation ofmicrofossils in the studied sediment samples might be due to rapid transport to the anoxic profundal zone or by rapidburial in anoxic sediments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Palaios

ISSN

0883-1351

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

317-326

Kód UT WoS článku

000575757500001

EID výsledku v databázi Scopus

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