Rheoreaction as a mechanism of formation of phenotypic groups of underyearlings of the Atlantic salmon Salmo salar

Павлов, Д. С.; Ponomareva, V. Yu.; Веселов, А. Е.; Kostin, V. V.

doi:10.1134/s003294521006007x

Cited by 7 publications

(3 citation statements)

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“…We also assume that this observation also reflected the activation of the biochemical mechanism maintaining the necessary functional activity of membrane-bound enzymes in response to the environment (temperature) and physiological changes in organism during growth. In the present study, the decreased TLs observed in young salmon aged 1+ and 2+ in October was also previously detected in the juveniles of Parasalmo mykiss and Oncorhynchus kisutch from the Northwest of Kamchatka in autumn [ 18 ].…”

Section: Discussionsupporting

confidence: 85%

“…It was shown that foraging conditions are more favorable for young age groups (0+) of salmon in small tributaries of the Varzuga River comparing to the mainstream [ 17 ]. The quantitative level of TAGs in fish, including fatty Salmonids, shows food supply and energetic reserve accumulation, which are important for further overwintering in the Arctic Rivers, such as the Varzuga River [ 13 , 14 , 18 ], while the qualitative profile of TAGs is tightly associated with the species composition of food objects. These storage lipids also play important roles in the adaptive reactions of organisms associated with membrane lipid modifications [ 1 ].…”

Section: Discussionmentioning

confidence: 99%

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Age-Specific Lipid and Fatty Acid Profiles of Atlantic Salmon Juveniles in the Varzuga River

Мурзина¹,

Нефедова²,

Пеккоева³

et al. 2016

IJMS

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The age-specific lipid and fatty acid profiles of juvenile Atlantic salmon at different ages (0+, 1+, and 2+ years) after hatching from nests located in the mainstream of a large Arctic River, the Varzuga River, and resettling to the favorable Sobachji shoal in autumn before overwinter are herein presented. The contemporary methods of the lipid analysis were used: thin layer chromatography and gas chromatography. The results show that the stability of the regulation of important functions in developing organisms is maintained through structural alterations in lipids. These alterations can be considered as a sequence of the modifications and changes in the ratios of certain lipid classes and fatty acids constituents. In general, changes in the lipids and fatty acids (FAs) maintained the physiological limits and controls through the adaptive systems of the organism. The mechanisms of juvenile fish biochemical adaptation to the environmental conditions in the studied biotope include the modification of the energy metabolism and anabolism, and here belongs to the energy characteristics of metabolic processes.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Age-Specific Lipid and Fatty Acid Profiles of Atlantic Salmon Juveniles in the Varzuga River

Мурзина¹,

Нефедова²,

Пеккоева³

et al. 2016

IJMS

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show abstract

“…Rheoreaction is one of the main behavioral mechanisms of distribution, dispersal, and migration of fish (Pavlov et al, 2010(Pavlov et al, , 2010a(Pavlov et al, , 2010bZvezdin, 2016). A common and easy assessment of the attitude of fish to the current is rheopreferendum, i.e., the preference or avoidance of the current by fish (Pavlov et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Rheoreaction in Danio rerio (Cyprinidae): Influence of Flow Velocity and Availability of Still Water Zones

2022

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The results of an experimental study of the influence of the flow velocity on the rheoreaction indices of Danio rerio, rheopreferendum and the ratio of the frequencies of various types of rheoreaction, are presented. At a crucial for fish flow velocity of 0.30, their rheopreferendum is positive, while at 0.80, negative. The ratio of rheoreaction types at these velocity levels was typical for resident fish. At a crucial flow velocity of 0.45, the rheopreferendum was not expressed, and the fish behavior was typical for upstream-migrating individuals. A decrease in the accessibility of the limnozone (limitation of the zone’s entrance width) in the circular tank reduces the number of fish returning to it and changes the ratio of their rheoreaction types. At the maximum width of the entrance (19 cm), the ratio of zebrafish rheoreaction types reflects the behavior characteristic of migrating individuals, while for all other variants (10, 3, and 1 cm) it is typical for resident forms. It is shown that the rheopreferendum is a less complete and reliable assessment of rheoreaction than the ratio of rheoreaction types. The applicability of rheoreaction indicators is considered.

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Comparison of Experimental Methods for Evaluating the Motivational Component of Fish Rheoreaction (Proportions of Rheoreaction Types)

et al. 2020

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Rheoreaction as a mechanism of formation of phenotypic groups of underyearlings of the Atlantic salmon Salmo salar

Cited by 7 publications

References 1 publication

Age-Specific Lipid and Fatty Acid Profiles of Atlantic Salmon Juveniles in the Varzuga River

Age-Specific Lipid and Fatty Acid Profiles of Atlantic Salmon Juveniles in the Varzuga River

Rheoreaction in Danio rerio (Cyprinidae): Influence of Flow Velocity and Availability of Still Water Zones

Comparison of Experimental Methods for Evaluating the Motivational Component of Fish Rheoreaction (Proportions of Rheoreaction Types)

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