Discovery of a silicate rock-boring organism and macrobioerosion in fresh water

Ivan N. Bolotov (), Olga V. Aksenova, Torkild Bakken, Christopher J. Glasby, Mikhail Yu. Gofarov, Alexander V. Kondakov, Ekaterina S. Konopleva, Manuel Lopes-Lima, Artyom A. Lyubas, Yu Wang, Andrey Yu. Bychkov, Agniya M. Sokolova, Kitti Tanmuangpak, Sakboworn Tumpeesuwan, Ilya V. Vikhrev, J. Bruce H. Shyu, Than Win and Oleg S. Pokrovsky
Additional contact information
Ivan N. Bolotov: Northern Arctic Federal University
Olga V. Aksenova: Northern Arctic Federal University
Torkild Bakken: NTNU University Museum
Christopher J. Glasby: Museum and Art Gallery of the Northern Territory
Mikhail Yu. Gofarov: Northern Arctic Federal University
Alexander V. Kondakov: Northern Arctic Federal University
Ekaterina S. Konopleva: Northern Arctic Federal University
Manuel Lopes-Lima: University of Porto
Artyom A. Lyubas: Northern Arctic Federal University
Yu Wang: Nanyang Technological University
Andrey Yu. Bychkov: Lomonosov Moscow State University
Agniya M. Sokolova: Russian Academy of Sciences
Kitti Tanmuangpak: Loei Rajabhat University
Sakboworn Tumpeesuwan: Mahasarakham University
Ilya V. Vikhrev: Northern Arctic Federal University
J. Bruce H. Shyu: National Taiwan University
Than Win: Hpa-An University
Oleg S. Pokrovsky: UMR 5563 CNRS

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract Macrobioerosion is a common process in marine ecosystems. Many types of rock-boring organisms break down hard substrates, particularly carbonate rocks and calcareous structures such as dead corals and shells. In paleontology, the presence of rocks with boreholes and fossil macroboring assemblage members is one of the primary diagnostic features of shallow marine paleo-environments. Here we describe a silicate rock-boring organism and an associated community in submerged siltstone rock outcrops in Kaladan River, Myanmar. The rock-boring mussel Lignopholas fluminalis is a close relative of the marine piddocks, and its borings belong to the ichnospecies Gastrochaenolites anauchen. The neotectonic uplift of the area leading to gradual decrease of the sea level with subsequent shift from estuarine to freshwater environment was the most likely driver for the origin of this community. Our findings highlight that rocks with macroborings are not an exclusive indicator of marine paleo-ecosystems, but may also reflect freshwater habitats.

Date: 2018
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DOI: 10.1038/s41467-018-05133-4

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