Genetic structure of marine and lake forms of Pacific herring Clupea pallasii

PeerJ

article

Svetlana Yu. Orlova¹  Sergey Rastorguev³  Tatyana Bagno³  Denis Kurnosov⁴  Artem Nedoluzhko² 

[1] Russian Federal Research Institute of Fisheries and Oceanography;Shirshov Institute of Oceanology of Russian Academy of Sciences;National Research Center “Kurchatov Institute”;Russian Federal Research Institute of Fisheries and Oceanography, Pacific Branch;Nord University

关键词: Pacific herring;    Clupea pallasii;    Speciation;    Subspecies;    Ecological form;    RAD sequencing;    Marine form;    Freshwater form;    Isolation;    Russia;   

DOI  :  10.7717/peerj.12444

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The Pacific herring (Clupea pallasii) is one of the most important species in the commercial fisheries distributed in the North Pacific Ocean and the northeastern European seas. This teleost has marine and lake ecological forms a long its distribution in the Holarctic. However, the level of genetic differentiation between these two forms is not well known. In the present study, we used ddRAD-sequencing to genotype 54 specimens from twelve wild Pacific herring populations from the Kara Sea and the Russian part of the northwestern Pacific Ocean for unveiling the genetic structure of Pacific herring. We found that the Kara Sea population is significantly distinct from Pacific Ocean populations. It was demonstrated that lake populations of Pacific herring differ from one another as well as from marine specimens. Our results show that fresh and brackish water Pacific herring, which inhabit lakes, can be distinguished as a separate lake ecological form. Moreover, we demonstrate that each observed lake Pacific herring population has its own and unique genetic legacy.

【 授权许可】

CC BY