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Russian Journal of Marine Biology

, Volume 45, Issue 5, pp 370–376 | Cite as

The Validity of Otolith-Based Age Estimates for the Walleye Pollock Theragra chalcogramma (Pallas, 1814) from the Eastern Sea of Okhotsk

  • A. V. BuslovEmail author
  • E. E. Ovsyannikov
ORIGINAL PAPERS
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Abstract

Data on age of the walleye pollock Theragra chalcogramma (Pallas, 1814) from the eastern Sea of Okhotsk, determined by otolith analysis, are considered. A comparison of the age–length relationships, as inferred from variations in modal body size of fish of strong year-classes and from otolith-based age estimates, has shown no significant differences. This confirms the accuracy of the otolith-based estimates of walleye pollock age.

Keywords:

walleye pollock Theragra chalcogramma eastern Sea of Okhotsk otoliths age body length abundance year-classes 

Notes

ACKNOWLEDGMENTS

The authors are grateful to their colleagues who collected and processed materials during the research surveys of the Pacific Research Fisheries Center in the Sea of Okhotsk in 1997–2013.

FUNDING

The study was carried out within the framework of the Integrated Program of Fisheries Research in the Far Eastern Fisheries Basin for 2012–2016 and the Concept of Fisheries Development in the Russian Federation up to 2020 (approved by the order of the Russian Federation Government of September 2, 2003, no. 1265-r) in accordance with the thematic plan of research works of the Pacific Research Fisheries Center for 2018.

COMPLIANCE WITH ETHICAL STANDARDS

Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Pacific Branch, Russian Federal Research Institute of Fisheries and Oceanography (TINRO)VladivostokRussia

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