North Pacific Anadromous Fish Commission

Technical Report 17

Table of Contents

Microevolution of Asian Sockeye Salmon Oncorhynchus nerka and its Link to Modern Diversity of Populations

Authors: 
Аnastasia М. Khrustaleva, Ekaterina V. Ponomareva, Marya V. Ponomareva, Oksana A. Pilganchuk, and Alexander V. Bugaev

Abstract Excerpt:
Sockeye salmon are one of the most economically valuable species in the North Pacific. Among all the Pacific salmon it is distinguished by the most pronounced philopatry and, accordingly, the temporary stability of local populations. This biological feature significantly hinders gene flow between populations and contributes to the maintenance of sophisticated intraspecific organization. The study of current diversity formation patterns and the history of sockeye salmon populations is the key point of insight into extremely complex population structures common to pacific salmon. Phylogeography and reconstruction of paleo expansion of the species against the backdrop of global climatic oscillations in the Late Pleistocene allow us to clarify the origin of sockeye salmon populations and the diversification of intrapopulation units. MtDNA is still the marker of choice for estimation of population diversity and genetic divergence, as well as for the study of the pathways of species expansion and reconstruction of the sequence of colonization of new areas in the postglacial periods. We performed an analysis of the contemporary phylogeography of sockeye salmon and considered possible scenarios for microevolution in their Asian range using mtDNA control region (D-loop) sequencing.

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DOI:
https://doi.org/10.23849/npafctr17/25.29.

Citation

Khrustaleva, A.M., E.V. Ponomareva, M.V. Ponomareva, O.A. Pilganchuk, and A.V. Bugaev.  2021.  Microevolution of Asian sockeye salmon Oncorhynchus nerka and its link to modern diversity of populations.  N. Pac. Anadr. Fish Comm. Tech. Rep. 17: 25–29.  https://doi.org/10.23849/npafctr17/25.29.