Growth and terms of obtaining marketable triploid oysters in Donuzlav Liman (Black Sea, Crimea)

• Published in: Marine Biological Journal
• Main Author: O. Yu. Vyalova
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS 2019
• Subjects: Pacific oyster; Crassostrea gigas; growth; mariculture; Donuzlav; Black Sea; Biology (General); QH301-705.5; Pacific
• Online Access: https://doi.org/10.21072/mbj.2019.04.1.03; https://doaj.org/article/dc4d5555267e454a9f3666fb3c0fbfb7

The rate of linear and weight growth of triploid spat of oyster Crassostrea gigas in Donuzlav Liman (Black Sea, Crimea) was investigated. A quantitative relationship between the mass (W, g) of the whole oyster and the height of the shell (H, mm) is given (it is described by the equation W = 7 · 10-5 · Н3.1, R² = 0.78), as well as a quantitative relationship between the mass (W, g) of the whole oyster and the length of the shell (L, mm) (W = 3 · 10-4 · L3.12, R² = 0.65). The maximum rates of linear growth of triploid oysters T20 were registered in April (1.15 mm per day), of weight growth – in June (0.50 g per day) and August (0.61 g per day). It was shown that 27 % of triploid oysters T20 can reach commercial size after 6 months. It is recommended to use Pacific oysters of T20 size as a planting material on the shellfish farms in the Black Sea region.