The second edition of the manual on ultrasound diagnostics of the sturgeon reproductive system contains several significant additions based both on the appearance of new equipment for ultrasound diagnostics and on the results of recent studies of the authors.
The new edition describes in detail the features of various types of ultrasonic sensors, including previously not used for sturgeon diagnostics. At the request of readers of the first edition, the features of the analysis of echograms obtained using a convex sensor are considered. The section describing the diagnosis of pathologies of the reproductive system of fish, including hermaphroditism, has been substantially expanded.
The guide provides basic principles of ultrasound diagnostic and recommendations for the sturgeon ultrasound diagnostic equipment and workplace arrangements. There is a detailed description of ultrasound diagnostic procedure for identification of sex and maturity stage of sturgeon gonads. There is also a detailed instruction on ultrasound images analysis and description of specific diagnostic features.
Annual sexual cycles with various inter-spawn intervals were for the first time analysed specifying the duration of each maturity stage in heat-reserve units. The principles of controlling linear and generative growth of sturgeons contained in replacement and breeding stocks of sturgeon farms had been defined.
The Atlas contains more than a hundred illustrations, provided with detailed descriptions and notes which allow even a novice fish farmer to independently learn ultrasound diagnostic of sex and maturity stage of sturgeon gonads. The book is addressed to specialists and chief managers of sturgeon farms, the farmers involved in sturgeon breeding, scientists and students.
