On the relationship between hypertrophy and hyperplasia of muscle fibers in postnatal myogenesis in fish of the Cyprinid family

Author:

Shilo E. I.1

Affiliation:

1. Belgorod State Agrarian University («Belgorod SAU»)

Abstract

The concept of muscle tissue growth as a chain of successive interdependent events makes it possible to develop a system of regulatory factors influencing the nutrition and growth of fish, their health and productive qualities. In bony fish, the primary and secondary generation of muscle fibers occurs at the embryonic and postembryonic stages of development, respectively. Unlike mammals and birds, the postnatal development of fish is accompanied by hypertrophy and hyperplasia of muscle tissues throughout their life, which determines the specificity of the growth of their muscle tissue and affects the quality of fish fillets. With an increase in the fiber area over 3500 µm2 with a simultaneous increase in the density of myofibrils up to 4.901 per 1 µm2 in underyearlings and in two-year-old carp fishes (carp, grass carp and silver carp), longitudinal splitting of fibers was observed. It has been shown that the formation of muscle tissue is accompanied by sustained oscillatory processes: tension and recovery within a single hypercycle of growth processes at different levels: at the level of myofibrils and muscle fibers, thus hyperplasia and hypertrophy of muscle fibers are not separated in time and space, but naturally replace each other, providing a common myogenic task — the growth of fish and its muscle tissue. The question of their relationship requires additional research in the future.

Publisher

Russian Federal Research Institute of Fisheries and Oceanography

Subject

General Medicine

Reference22 articles.

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