TY - JOUR

T1 - Evidence for plio-pleistocene duck mussel refugia in the Azov sea river basins

AU - Tomilova, Alena A.

AU - Lyubas, Artem A.

AU - Kondakov, Alexander V.

AU - Vikhrev, Ilya V.

AU - Gofarov, Mikhail Y.

AU - Kolosova, Yulia S.

AU - Vinarski, Maxim V.

AU - Palatov, Dmitry M.

AU - Bolotov, Ivan N.

N1 - Publisher Copyright: © 2020 by the authors.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - Freshwater mussels (Bivalvia: Unionoida) play an important role in freshwater habitats as ecosystem engineers of the water environment. Duck mussel Anodonta anatina is widely distributed throughout Europe, Siberia, andWestern and Central Asia, which makes it a convenient object for biogeographic studies. In this study, we analyzed the divergence of A. anatina populations and discovered a separate genetic lineage distributed in rivers of the Azov Sea basin. This was confirmed by the high genetic distances between this group and previously defined populations, and by the position of this clade in the Bayesian phylogeny calibrated by an external substitution rate. Based on our approximate Bayesian computation (ABC) analysis, biogeographic scenarios of A. anatina dispersal in Europe and Northern, Western, and Central Asia over the Neogene-Quaternary were simulated. The haplogroup's isolation in the rivers of the Azov Sea basin most likely occurred in the Late Pliocene that was probably facilitated by rearrangement of freshwater basins boundaries in the Ponto-Caspian Region. Population genetic indices show the stability of this group, which allowed it to exist in the river basins of the region for a long time. The discovery of a long-term refugium in the rivers of the Azov Sea led to a better understanding of freshwater fauna evolution in the Neogene-Quaternary and highlighted the importance of conservation of these freshwater animals in the region as a source of unique genetic diversity.

AB - Freshwater mussels (Bivalvia: Unionoida) play an important role in freshwater habitats as ecosystem engineers of the water environment. Duck mussel Anodonta anatina is widely distributed throughout Europe, Siberia, andWestern and Central Asia, which makes it a convenient object for biogeographic studies. In this study, we analyzed the divergence of A. anatina populations and discovered a separate genetic lineage distributed in rivers of the Azov Sea basin. This was confirmed by the high genetic distances between this group and previously defined populations, and by the position of this clade in the Bayesian phylogeny calibrated by an external substitution rate. Based on our approximate Bayesian computation (ABC) analysis, biogeographic scenarios of A. anatina dispersal in Europe and Northern, Western, and Central Asia over the Neogene-Quaternary were simulated. The haplogroup's isolation in the rivers of the Azov Sea basin most likely occurred in the Late Pliocene that was probably facilitated by rearrangement of freshwater basins boundaries in the Ponto-Caspian Region. Population genetic indices show the stability of this group, which allowed it to exist in the river basins of the region for a long time. The discovery of a long-term refugium in the rivers of the Azov Sea led to a better understanding of freshwater fauna evolution in the Neogene-Quaternary and highlighted the importance of conservation of these freshwater animals in the region as a source of unique genetic diversity.

KW - Anodonta anatina

KW - Azov sea basin

KW - Messinian salinity crisis

KW - Neogene-Quaternary

KW - Ponto-Caspian region

KW - Refugia

KW - PHYLOGEOGRAPHY

KW - ANODONTA

KW - refugia

KW - MOLLUSCA

KW - SEQUENCE

KW - FRESH-WATER MUSSELS

KW - Azov Sea basin

KW - DIVERSITY

KW - BIVALVIA UNIONIDAE

KW - INSIGHTS

KW - HISTORY

KW - SNAIL

UR - http://www.scopus.com/inward/record.url?scp=85083788986&partnerID=8YFLogxK

U2 - 10.3390/d12030118

DO - 10.3390/d12030118

M3 - Article

AN - SCOPUS:85083788986

VL - 12

JO - Diversity

JF - Diversity

SN - 1424-2818

IS - 3

M1 - 118

ER -