Changes in Gametogenesis and Sexual Maturation of the Young Muksun (Coregonus muksun) Under the Influence of Surfagon

About the authors:

Leonid A. Shuman, Cand. Sci. (Biol.), Assistant, Department of Anatomy and Physiology of Humans and Animals, University of Tyumen; leonidshuman@yandex.ru

Katerina V. Efremova, Cand. Sci. (Biol.), Head of the Laboratory, Sobsk Fish Farm (Labytnangi); katerinaef@yandex.ru

Kristina A. Dedul, Master Student, University of Tyumen; dedul.kristina@list.ru

Abstract:

Reducing the number of many valuable fish species increases the importance of technologies for their artificial reproduction. For muksun (Coregonus muksun), the process of creating broodstocks is resource-intensive because of its late sexual maturation. Hormonal exposure during the early stages of gametogenesis is potentially capable of accelerating puberty of fishes.

In this paper, the authors describe the effect of a synthetic analogue of the gonadotropin releasing hormone-surfagon on gametogenesis, rates of puberty, and the internal organs of muksun’s juveniles. The results show an acceleration in the rate of gametogenesis in the fish exposed to the hormone.

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