General paper
Physiological changes in skeletal muscle by maturation-spawning of non-migrating female atlantic salmon, Salmo salar

https://doi.org/10.1016/0305-0491(92)90002-9Get rights and content

Abstract

  • 1.

    1. Physiological properties of epaxial muscle of non-migrating female Atlantic salmon (Salmo salar) were compared between non-spawning and spawning fish.

  • 2.

    2. The rise in blood plasma vitellogenin, and liver and gonadal weights confirmed the maturation-spawning condition.

  • 3.

    3. In the spawning females DNA, glycogen and acid proteinase activity were elevated per g wet weight of muscle, while protein and RNA content of the sarcoplasmic fraction and RNA of the myofibrillar fraction were diminished.

  • 4.

    4. The data suggest that characteristic changes occur in skeletal muscle by the process of maturation and spawning, which are independent of the physical load of upstream migration.

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