Eggs of pink salmon Oncorhynchus gorbuscha as additional nontraditional food of juvenile atlantic salmon Salmo salar in rivers of the Kola Peninsula

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• 作者：E. N. Rasputina ; Yu. A. Shustov ; I. A. Tyrkin
• 关键词：Atlantic salmon ; pink salmon ; feeding
• 刊名：Russian Journal of Biological Invasions
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：7
• 期：3
• 页码：294-296
• 全文大小：93 KB
• 刊物主题：Ecology; Freshwater & Marine Ecology; Plant Sciences; Developmental Biology;
• 出版者：Springer US
• ISSN：2075-1125
• 卷排序：7

文摘

Pink salmon was intentionally introduced into the rivers of the Kola Peninsula in the past century. It regularly goes to the rivers to spawn, which are always used by Atlantic salmon, and this leads to a certain competition between the species. It is reported in published work that smolts of Atlantic salmon feed on juveniles of pink salmon, but there is no information on the consumption of pink salmon eggs by young salmon. In the salmon rivers of the Far East, the consumption of eggs of one salmon species by another Far Eastern salmon, for example, chum or coho salmon, is registered. The analysis of feeding of young salmon from the Indera and Pulonga rivers (Kola Peninsula) shows that juvenile Atlantic salmon intensely consume eggs of pink salmon, which increases significantly the index of stomach fullness.