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О составе нерестового стада балтийского шпрота.

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A.Polivaiko.1982.pdf
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Author
Polivaiko, A.G.
Date
1982

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Alternative Title
On the composition of Baltic sprat spawning stock.
Abstract
Рассматривается динамика размерно-возрастной и половой структуры нерестового стада шпрота по годам, районам и в течение нерестового сезона. Установлено, что ход нереста различается по годам и определяется суровостью зим, упитанностью шпрота в зимний и осенний периоды, а также величинами пополнения нерестового стада. В Борнхольмском районе происходит нерест старшевозрастного шпрота из Готландского района. Уменьшение роли Борнхольмского нерестилища с 1975 года является следствием снижения численности готландской популяции шпрота.
The dynamics of size-age and sexual structure of sprat spawning stock according to years, areas and during the spawning season is considered. It was determined that spawning process differed according to years and is determined by winter severity, sprat condition as well as by recruitment quantity and spawning stock. Spawning of older sprat from Gotland area takes place in Bornholm area. The decrease of Bornholm spawning ground importance since 1975 is the result of the decrease of Gotland sprat population abundance.
Journal
Fischerei-Forschung. Fischereiliche Untersuchungen der DDR und der UdSSR in der Ostsee. Рыбохозяйственные исследования ГДР и СССР в бассейне Балтийского моря
Volume
20
Issue/Article Nr
1
Page Range
pp.43-50
URI
http://hdl.handle.net/1834/15803
Collections
Publications of the Baltic Fisheries Research Institute’s Researchers (1975-1991)

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