Abstract

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.

中文翻译：

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鱼类饥饿期间流变反应类型比率的变化

摘要

已经分析了某些鱼类在饥饿期间流变反应的动机成分（流变反应类型的比率）的变化。鱼类迁移动机（饥饿前）的存在是未来由饥饿引起的流变反应动机成分变化的主要模式。研究了鲤科和鲑科的所有鱼类，最初的行为作为常驻个体表现出相同类型的饥饿反应。他们对顺流运动的偏好在饥饿的第 2-5 天增加，然后在第 7-12 天对逆流运动的偏好增加，并且流变反应类型的比例接近最初的。黑海鲑幼鱼 ( Salmo trutta labrax)) 以向下游迁移为动机，代表对饥饿的不同反应：个体的下游移动从饥饿后两天开始单调增加。