Mussel growth in the Donuzlav Lake
Lake Donuzlav (Crimea, Ukraine) is a closed narrow arm of the Black Sea 27 km long located in the southwestern Kerch Peninsula. Its hydrologicul regime differs in many respects from the adjacent coastal areas, thus determining the peculiarities of the local mussel Mytilus galloprovincialis population and culture techniques. The triennial investigations showed annual recurrence of the main peculiarities of mussel growth by seasons, governed primarily by the temperature factor. The most intensive linear and weight growth rate in smaller groups occurred in April-May, whereas in seniors they were shifted to June-July. Mussel growth in Lake Donuzlav is primarily governed by the water temperature regime and also by the reproductive activity of the molluscs; the growth pattern can be described as a sequence of the annually recurrent cyclic periods of active growth, stunted growth, and termination of growth. Mussel growth rate in Lake Donuzlav is at its highest in the temperature range of 14 to 20 degree C; the lower temperature limit of growth is 5 degree C, the upper temperature limit is 25 degree C, which is 2 degree C higher than that in the Kerch Strait. During gonad maturation period the linear growth rate sharply slows down. Highest rates of linear and weight growth in mussels are observed at the early ontogenetic stages; they gradually slow down with age, whereas the body mass growth can even increase with age.
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
1994
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| Subjects: | Mussel culture, Mussel growth, Marine molluscs, Temperature effects, Growth rate, Body weight, Ontogenesis, Gonad maturation, Культивирование мидий, Линейный рост, Вес тела, Онтогенез, Гонады, |
| Online Access: | http://hdl.handle.net/1834/15826 |
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