Reconstruction of the evolutionary biogeography reveal the origins and diversification of oysters (Bivalvia: Ostreidae)

Oysters (Bivalvia: Ostreidae Rafinesque, 1815) live in the intertidal and shallow subtidal areas worldwide. Despite their long evolutionary histories, abundant fossil records, global distribution, and ecological significance, a systematic time-dependent biogeographical analysis of this family is sti...

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Bibliographic Details
Published in:Molecular Phylogenetics and Evolution
Main Authors: Li, Cui, Kou, Qi, Zhang, Zhen, Hu, Lisha, Huang, Wen, Cui, Zongmei, Liu, Yumeng, Ma, Peizhen, Wang, Haiyan
Format: Report
Language:English
Published: ACADEMIC PRESS INC ELSEVIER SCIENCE 2021
Subjects:
Ostreidae
Divergence times
Fossil record
Historical biogeography
Biochemistry & Molecular Biology
Evolutionary Biology
Genetics & Heredity
FOUNDER-EVENT SPECIATION
PHYLOGENETIC ANALYSIS
MODEL SELECTION
PACIFIC
CLASSIFICATION
DIVERSITY
CRASSOSTREA
PLATE
GENUS
Arctic
Pacific
Online Access:http://ir.qdio.ac.cn/handle/337002/176549
https://doi.org/10.1016/j.ympev.2021.107268
Description
Summary:Oysters (Bivalvia: Ostreidae Rafinesque, 1815) live in the intertidal and shallow subtidal areas worldwide. Despite their long evolutionary histories, abundant fossil records, global distribution, and ecological significance, a systematic time-dependent biogeographical analysis of this family is still lacking. Using combined mitochondrial (COI and 16S rRNA) and nuclear (18S rRNA, 28S rRNA, H3 and ITS2) gene makers for 80% (70/88) of the recognized extant Ostreidae, we reconstructed the global phylogenetic and biogeographical relationships throughout the evolutionary history of oysters. The result provided a holistic view of the origin, migration and dispersal patterns of Ostreidae. The phylogenetic results and fossil evidence indicated that Ostreidae originated from the circum-Arctic region in the Early Jurassic. The widening of the Atlantic Ocean and changes in the Tethys Ocean further facilitated their subsequent diversification during the Cretaceous and the Palaeogene periods. In particular, Crassostrea and Saccostrea exhibited relatively low dispersal abilities and their major diversifications were consistent with the tectonic events. Environmental adaptations and reproductive patterns, therefore, should play key roles in the formation of oyster distribution patterners, rather than the dispersal ability of their planktonic larvae. The diversity dynamics inferred by standard phylogenetic are consistent with the fossil record, however, further systematic classification, especially for fossil genus Ostrea, would enhance our understanding on extant and fossil oysters. The present study of the historical biogeography of oysters provides new insights into the evolution and speciation of oysters. Our findings also provide a foundation for the assessment of evolutionary patterns and ecological processes in intertidal and inshore life.

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