Surfagon Effect on Rheoreaction of Young Brown Trout Salmo trutta

Павлов, Д. С.; Pavlov, E. D.; Kostin, V. V.; Zaripov, Pavel I.; Ruchiev, M. A.

doi:10.1134/s0032945218060139

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…The contranatance index (I k ) represents the most vivid assessment of the dynamics of the migrationassociated changes in fish behavior. Table 2 shows the results of both this work and data previously obtained on individuals of the rainbow trout, brown trout, and its subspecies, the Black Sea trout (Pavlov et al, 2010(Pavlov et al, , 2018(Pavlov et al, , 2020aPavlov, Е. et al, 2016). At the beginning of starvation, all fish are characterized by an increased motivation for currentwise movement, and then, by that against the current.…”

Section: Resultsmentioning

confidence: 80%

“…This is consistent with the literature data; for example, in juvenile Alaska pollock Theragra chalcograma, the transition from active search behavior to (Pavlov et al, 2020a) -0.14 -0.57 -0.30 -0.23 -0.25 0.05 P. mykiss (=O. mykiss) (Pavlov, E. et al, 2016) 0.13 -0.21 -0.20 -0.03 -0.15 0.00 S. trutta labrax (Pavlov et al, 2010) -0.08 -0.18 -0.22 -0.09 -0.01 -S. trutta (Pavlov et al, 2018) -0.43 -0.62 -0.68 -0.58 -0.42 a decrease in motor activity occurred on days 30-54 of starvation (Sogard and Olla, 1996).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, to analyze and summarize the results, we used the initial data on control individuals, obtained by us in studies of the physiological and biochemical mechanisms of migration of the brown trout (Salmo trutta), Black Sea trout (Salmo trutta labrax), and rainbow trout (Pavlov et al, 2010(Pavlov et al, , 2018(Pavlov et al, , 2020aPavlov, E. et al, 2016). These individuals were not subjected to experimental effects (hormonal drugs or denial of access to shelters) either before or during the starvation.…”

Section: Methodsmentioning

confidence: 99%

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Changes in the Ratio of Rheoreaction Types during Fish Starvation

Павлов

Kostin

Parshina

et al. 2021

Biol Bull Russ Acad Sci

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Changes in the motivational component of rheoreaction (the ratio of rheoreaction types) during starvation in some fish species has been analyzed. The presence of fish motivation to migrate (before starvation) is the major pattern of the future changes in the motivational component of rheoreaction resulting from starvation. All fish of the families Cyprinidae and Salmonidae studied with initially behavior as resident individuals show the same type of response to starvation. Their preference for currentwise movement increases on the 2nd–5th days of starvation, then the preference for movement against the current increases on the 7th–12th days, and the ratio of rheoreaction types approaches the initial one. Juveniles of the Black Sea salmon (Salmo trutta labrax) with a motivation to downstream migration, represent a different response to starvation: the downstream movement of individuals monotonically increased from two days after starvation.

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Section: Resultsmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Changes in the Ratio of Rheoreaction Types during Fish Starvation

Павлов

Kostin

Parshina

et al. 2021

Biol Bull Russ Acad Sci

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Change of Rheoreaction and Concentration of Thyroid Hormones in Blood of Juvenile Rainbow Trout Oncorhynchus mykiss during Starvation

et al. 2020

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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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Surfagon Effect on Rheoreaction of Young Brown Trout Salmo trutta

Cited by 3 publications

References 21 publications

Changes in the Ratio of Rheoreaction Types during Fish Starvation

Changes in the Ratio of Rheoreaction Types during Fish Starvation

Change of Rheoreaction and Concentration of Thyroid Hormones in Blood of Juvenile Rainbow Trout Oncorhynchus mykiss during Starvation

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

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