The ultrastructure of myotomal muscles of the golomianka, Cormephorus baikalensis Pallas

Abstract

An ultrastructural study of the myotomal muscles in the golomianka, Comephorus baikalensis Pallas, revealed two main and distinct muscle regions: superficial and white. They were distinguished on the basis of histological and ultrastructural organization. Only the superficial fibre region shows homogeneous organization. The principal new finding is the unique ultrastructural organization of the superficial muscle fibres. Their myofibrils occur in the form of ribbons surrounded by large mitochondria.

Characterization of Lateral Musculature in the Striped Weakfish (Cynoscion striatus Cuvier)

“…Mitochondria were found less abundantly and with a lower vascularization than in red muscle. Although a t an SDH level histochemical differences among the diverse white inuscle fibres were found, the electron microscope did not allow differentiation of white fibres between them, even though they share those features already attributed to other teleosts (Shindo et al, 1986;Kirlarski et al, 1992).…”