Estimation of heritability of vertebral number in chum salmon Oncorhynchus keta

Daisei Ando, Mizue Murooka, Kazutaka Shimoda, Hirofumi Hayano, Yoshitaka Sasaki, Yasuyuki Miyakoshi, Masamichi Nakajima

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Hereditary causes of variation in the vertebral number of chum salmon were analyzed to estimate heritability for populations in the Chitose and Shikiu Rivers, Hokkaido Island, northern Japan. A total of 70 families were produced by diallel cross mating and then heritability was estimated using two statistical tests: a two-way ANOVA and a parent-offspring regression. Heritability estimates ranged from 0.26 to 1.91 and showed a strong correlation between the values from the two different tests. Estimates from female components were substantially higher than those from male components, which can be attributed to the maternal effect. Heritability in the Shikiu River population was shown to be higher than that in the Chitose River population. These results indicate that the heritability of vertebral number in chum salmon is generally high, and also that vertebral number is controlled by hereditary causes.

    Original languageEnglish
    Pages (from-to)413-423
    Number of pages11
    JournalFisheries Science
    Volume83
    Issue number3
    DOIs
    Publication statusPublished - 2017 May 1

    Keywords

    • Local population
    • Maternal effect
    • Meristic characters
    • Salmon hatchery
    • Stock enhancement

    ASJC Scopus subject areas

    • Aquatic Science

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