Locomotor Activity of the Intact and Visually Deprived Senegal Bichir Polypterus senegalus (Cladistia) at Different Water Temperatures

IF 0.5 4区生物学 Q4 FISHERIES

Journal of Ichthyology Pub Date : 2024-06-25 DOI:10.1134/s0032945224700164

A. O. Kasumyan, V. V. Zdanovich, V. V. Sataeva

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Abstract

For the first time, the locomotor activity of the intact and visually deprived Senegal bichir Polypterus senegalus was assessed at different water temperatures (20, 25, 30 and 34°C). Using the open field test, it was shown that in intact fish, with increasing temperature, locomotor activity increases (most rapidly in the range of 20–25°C) and reaches a maximum at a temperature of 30°C, which can be close to the temperature optimum (or correspond to it) for the Senegal bichir. In visually deprived fish, locomotor activity is maximum at 20°C and decreases monotonically with increasing temperature; all indicators of locomotor activity (frequency of crossing test lines; time spent crossing the test line; distance covered by the fish; swimming speed) vary in visually deprived fish weaker than in intact ones. The differences in the behavior of intact and visually deprived fish indicate the presence of a functional relationship between vision and locomotor activity in evolutionarily ancient Cladistia.

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不同水温下完整和失去视觉的塞内加尔比奇鱼（Polypterus senegalus (Cladistia)）的运动活动

摘要首次评估了塞内加尔比熊鱼在不同水温（20、25、30和34°C）下的运动活动。露天野外试验表明，在完整的鱼类中，随着温度的升高，运动活动会增加（在 20-25°C 范围内增加最快），并在 30°C 时达到最大值，这可能接近塞内加尔比熊的最适温度（或与之相对应）。视觉缺失鱼的运动活动在 20°C 时达到最大值，并随着温度的升高而单调下降；视觉缺失鱼的所有运动活动指标（穿过测试线的频率、穿过测试线的时间、鱼游动的距离、游动速度）的变化都比完整鱼弱。完整鱼类和视觉缺失鱼类的行为差异表明，在进化古老的鳉鱼类中，视觉和运动活动之间存在着功能关系。

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来源期刊

Journal of Ichthyology Multiple-

CiteScore

1.00

自引率

28.60%

发文量

期刊介绍： Journal of Ichthyology is an international peer-reviewed journal published in collaboration with the Russian Academy of Sciences. It covers original studies in fish taxonomy, evolution, molecular biology, morphology, species diversity, zoological geography, genetics, physiology, ecology, behavior, reproduction, embryology, invasions, and protection. Some problems of applied ichthyology are also covered. The journal welcomes manuscripts from all countries in the English or Russian language.