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Physiological condition of the Black and Azov Sea Pontic shad Alosa immaculata (Bennett) breeders in 2014–2016

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Author
Kuzina, V.F.
Sergeeva, S.G.
Bugaev, L.A.
Voikina, A.V.
Tsybulskaya, M.A.
Publication Editor
Bogachev, A.N.
Belousov, V.N.
Kornienko, G.G.
Boyko, N.E.
Date
2018

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Alternative Title
Физиологическое состояние производителей черноморско-азовской проходной сельди Alosa immaculata (Bennett) в 2014–2016 годах
Abstract
The materials of 2014–2016 are presented. They characterize the physiological state of the Pontic shad breeders that migrate for spawning from the Black and Azov Seas to the Don River. In 2014–2015, at the beginning of the spawning period, high values of condition factor, as well as of the fat and protein content in the muscles and liver were observed in shad breeders, which gives evidence of the good pre-spawning fish feeding. By the end of spawning, the values of these indicators have decreased because of significant expenditure of energy resources due to prolonged spawning. In 2016, for the first time over the entire period of our studies, certain deterioration in the physiological state of the breeders and their readiness for spawning was noted. Compared with the long-term average annual data, the content of protein and fat in muscles and liver significantly decreased. We associate the cause of the deterioration of the Pontic shad state with change in the conditions of its fattening in 2015–2016.
Представлены материалы 2014–2016 гг., характеризующие физиологическое состояние производителей черноморско-азовской проходной сельди, заходящей на нерест в р. Дон. В период 2014–2015 гг. в начале нерестового хода у производителей сельди отмечались высокие значения коэффициента упитанности, содержания жира и белка в мышцах и печени, свидетельствующие о хорошем преднерестовом нагуле рыб. К концу нереста значения этих показателей снизились, что связано со значительными тратами энергетических ресурсов на продолжительное икрометание. В 2016 г. впервые за весь период наших исследований отмечено ухудшение физиологического состояния производителей и их подготовленности к нересту. По сравнению со среднемноголетними данными значительно снизилось содержание белка и жира в мышцах и печени. Причину ухудшения состояния черноморско-азовской проходной сельди мы связываем с изменением условий ее нагула в 2015–2016 гг.
Pages
pp.160-163
Publisher or University
Azov Sea Research Fisheries Institute (AzNIIRKH)
Conference Name
Current issues of fisheries, fish breeding (aquaculture), and ecological monitoring of aquatic ecosystems
Conference Location
Rostov-on-Don, Russia
Conference Date
11-12 December 2018
URI
http://hdl.handle.net/1834/15246
Collections
AzNIIRKH Conference Proceedings 2018 (Anniversary Issue)

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