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Russian Journal of Marine Biology

, Volume 44, Issue 1, pp 36–41 | Cite as

The Condition of Ovaries in Hatchery-Reared Juvenile Summer- and Fall-Run Chum Salmon, Oncorhynchus keta (Walbaum, 1792), in Sakhalin Oblast

  • V. S. Kolomytsev
  • A. E. Lapshina
  • O. V. Zelennikov
Article
  • 8 Downloads

Abstract

The condition of the ovaries in juvenile fall- and summer-run chum salmon prior to release was studied at five fish hatcheries that operate on Sakhalin Island. It has been found that juveniles released from different hatcheries, while having a similar body weight, may differ in the degree of development of their ovaries. Juvenile summer-run chum salmon showed a lower oogenesis rate at the hatchery with the warmest water and a higher oogenesis rate at the relatively cold-water hatcheries, compared to that of fall-run juveniles.

Keywords

Sakhalin chum salmon fish hatchery oogenesis oocytes 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • V. S. Kolomytsev
    • 1
  • A. E. Lapshina
    • 2
  • O. V. Zelennikov
    • 1
  1. 1.St. Petersburg UniversitySt. PetersburgRussia
  2. 2.Sakhalin Basin Agency for Fishery and Conservation of Aquatic Biological ResourcesYuzhno-SakhalinskRussia

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