Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.
J Fish Biol. 2020 Aug;97(2):416-423. doi: 10.1111/jfb.14380. Epub 2020 Jun 8.
We assessed whether zebrafish, Danio rerio, display inhibitory control using a simple and rapid behavioural test. Zebrafish were exposed to a prey stimulus placed inside a transparent tube, which initially elicited attack behaviour. However, zebrafish showed a rapid reduction in the number of attacks towards the prey, which indicated the ability to inhibit their foraging behaviour. Zebrafish also exhibited mnemonic retention of foraging inhibition, as indicated by a reduced number of attacks in a subsequent exposure to the unreachable prey. The ability to inhibit the foraging behaviour varied across three genetically separated wild-type strains and across different individuals within strains, suggesting that zebrafish show heritable within-species differences in inhibitory control. Our behavioural test might be suitable for screening large zebrafish populations in mutational studies and assessing the effects of pharmacologically active substances on inhibitory control.
我们评估了斑马鱼（Danio rerio）是否通过一项简单而快速的行为测试来表现出抑制控制能力。斑马鱼被暴露于一个放在透明管内的猎物刺激物，这最初会引发攻击行为。然而，斑马鱼表现出对猎物攻击次数的迅速减少，这表明它们有抑制觅食行为的能力。斑马鱼还表现出对觅食抑制的记忆保留，这表现为在随后接触无法到达的猎物时攻击次数减少。抑制觅食行为的能力在三个遗传分离的野生型品系之间以及同一品系内的不同个体之间有所不同，这表明斑马鱼在抑制控制方面表现出种内可遗传的差异。我们的行为测试可能适用于在突变研究中筛选大型斑马鱼群体，并评估药理活性物质对抑制控制的影响。
