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Echography for Siberian Sturgeon (Acipenser baerii) Brood Stock Management

  • Mikhail Chebanov
  • Elena Galich
Chapter

Abstract

The lack of external sexual dimorphism in sturgeons, including Siberian sturgeon, had been hampering the brood stock establishment and caviar production for a long time. The development of noninvasive express techniques of echography diagnostics of Siberian sturgeon has allowed to optimize sex structure of the sturgeon brood stocks, and to increase considerably the efficiency of caviar production and exclusive rearing of females.

In this chapter the procedure of express noninvasive echography scanning of Siberian sturgeon specimens for early sexing and maturity staging has been considered. This has enabled the completion of full echography study of gametogenesis and preparation of detailed atlas that presents echograms of different stages of gonad maturity in Siberian sturgeon males and females.

The new trends in effective application of the echography technique in sturgeon diagnostics, being developed during past few years, as follows, are described in this chapter:
  • Identification of anomalies in the reproductive system (cysts, decreased fecundity of females, high testis lobularity, hermaphroditism) for culling of specimens with abnormalities and underdeveloped reproductive system

  • Conducting of different express measurements and calculation of gonadosomatic index, female fecundity forecast, and assessment of egg ovulation rate, aiming at identification of optimal time of egg maturity

  • Assessment of different maturity stage duration to forecast final maturation of brood fish exposed to different rearing conditions (temperature, feeding), thus enabling the development of optimal holding regimes and food diets for different age groups

  • It has been revealed that systematic functional echography diagnostics can considerably enhance efficiency of brood stock management and modern sturgeon culture technology in the course of sustainable development of caviar production from farmed breeders

Keywords

Acipenser baerii Sexing Echography Maturity staging Abnormalities 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Regional Centre for Sturgeon Gene Pool Conservation “Kubanbioresursi”KrasnodarRussian Federation
  2. 2.Department of Aquatic Biological Resources and AquacultureKuban State UniversityKrasnodarRussian Federation

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