浊度对鲌鱼行为的影响

IF 2.1 3区 农林科学 Q2 FISHERIES Fishes Pub Date : 2023-12-20 DOI:10.3390/fishes9010003
P. Horká, Monika Vlachova
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引用次数: 0

摘要

在群居物种中,与同类的社会互动对群体的形成和做出一致决定的能力起着至关重要的作用,并对自然种群的生态和进化过程产生深远影响。基于社会熟悉程度的个体识别和伙伴偏好是鱼类种群中个体与社会结构之间一系列相互作用的重要驱动机制。然而,群居物种的社会互动也受到个体所处生态环境的影响。本研究旨在确定鱼群结构如何受浑浊度增加的影响,浑浊度增加是受人为影响的河流中典型的环境制约因素。研究以淡水鱼类--白鲑鱼(Alburnus alburnus)--为模型生物,研究其形成鱼群、视觉定向的行为。在实验室实验中测试了 40 条个体在三种不同浊度水平(0NTU、30NTU、60NTU)下的行为。具体来说,目的是确定浊度是否会随着视觉条件的恶化而在个体距离之间降低。结果表明,即使在中等浊度水平(30 NTU)下,漂白也会增加滩涂的紧凑度,而且紧凑度会随着浊度的增加而进一步提高。这些结果表明,在受浊度增加影响的生态系统中,浊度是影响滩涂结构的一个重要现象,最终也是自然鱼类种群的一个生态过程。
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The Effect of Turbidity on the Behavior of Bleak (Alburnus alburnus)
In group-living species, social interactions with conspecifics play a crucial role in group formation and the ability to make consensus decisions, with far-reaching consequences for ecological and evolutionary processes in natural populations. Individual recognition and partner preferences based on social familiarity are important mechanisms driving a range of interactions between individual fish and social structure in fish populations. However, the social interactions of gregarious species are also influenced by the ecological environment experienced by individuals. This study aimed to determine how fish shoals’ structure is shaped by increased turbidity, a typical environmental constraint in anthropogenically impacted rivers. A freshwater, shoal-forming, visually orientated pelagic fish—bleak (Alburnus alburnus)—was used as the model organism. The behavior of 40 individuals at three different turbidity levels (0 NTU, 30 NTU, 60 NTU) was tested in the laboratory experiment. Specifically, the aim was to determine if the turbidity reduces between individual distances in response to the deteriorated visual conditions. The results showed that bleaks increased the compactness of the shoal even at the medium turbidity level (30 NTU), and compactness further increased with turbidity. Such results indicate that turbidity is an important phenomenon influencing the structure of shoals and ultimately an ecological process in natural fish populations in ecosystems affected by increasing turbidity.
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来源期刊
Fishes
Fishes Multiple-
CiteScore
1.90
自引率
8.70%
发文量
311
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