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首页> 外文期刊>Journal of Behavioral and Brain Science >Four-Week Fluoxetine (SSRI) Exposure Diminishes Aggressive Behaviour of Male Siamese Fighting Fish (Betta splendens)
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Four-Week Fluoxetine (SSRI) Exposure Diminishes Aggressive Behaviour of Male Siamese Fighting Fish (Betta splendens)

机译：四周氟西汀（SSRI）暴露可减少雄性暹罗斗鱼（Betta splendens）的攻击行为

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Aggression, especially territorial is a serious problem in farmed and ornamental fish. Especially the tropical species like Siamese fighting fish Betta splendens or marine species like blu head Thalassoma bifasciatum. Also farmed species of Salmoniformes (Coho salmon Oncorhynchus kisutch, rainbow trout Oncorhynchus mykiss) exhibit territorial aggression which is correlated with growth rate of the fish. In these species native territorial aggression occurs, and in ethology it is called stereotypical agonistic behaviour or conspecific aggression. In this type modulation of aggression serotonin (5-HT) plays a main role. A decrease of 5-HT in brain intensifies these type of aggression and in opposite an increase of 5-HT reduces it. The purpose of this study was to examine the effects of different doses of fluoxetine on male aggressive behaviors of Betta splendens fish. It was concluded that fluoxetine added to aquarium water in the doses of 4, 40 and/or 100 μg·ga–1 BW during 14 - 28 days increased synaptic levels of 5-HT what in turn resulted in the reduction of the specific aggressive behaviors. Fluoxetine caused periodic, and sometimes even total weakening of male-male type fight, which is a standard trial applied in ethological research on Siamese fighting fish. In current study, the most effective was the dose of 40 μg·g–1 BW. The mechanism of this antiaggressivity depended on an increase of serotonergic system activity in animal brain (especially, in raphe nuclei), however synaptic levels of 5-HT in brain were not measured in this experiment. Thus, the hypothesis that exposure from day 1 - 21 would reduce aggression was rejected; as was the hypothesis that exposure on fluoxetine from day 10 (16) - 14 - 28 would rapidly reduce aggression in teleost fishes. The results obtained suggests that a complex role of serotonin in the expression of aggression in teleost fish because acute treatment with 5-HT1A receptor agonist WAY-100635 did not increase aggression in fish [1]. We emphasize the physiological concepts that can be addressed with this experiment, including the role of the serotonergic system in regulation of aggression, and the interplay of environmental contaminants and physiology in regulating the expression of behavior of fishes.
机译：侵略性，特别是领土问题，在养殖和观赏鱼中是一个严重的问题。特别是热带物种，例如暹罗斗鱼Betta splendens或海洋物种，例如蓝头海藻Thalassoma bifasciatum。养殖的鲑鱼种类（鲑科鲑，虹鳟鱼鲑）也表现出领土侵略性，与鱼类的生长速度有关。在这些物种中，发生了自然的领土侵略，在人类学上，这被称为刻板的激动行为或同种侵略。在这种类型中，攻击性5-羟色胺（5-HT）的调节起主要作用。大脑中5-HT的降低会加剧这类攻击，相反，5-HT的升高会降低攻击。这项研究的目的是检查不同剂量的氟西汀对Betta splendens鱼雄性侵略行为的影响。结论是，在14至28天内以4、40和/或100μg·ga-1 BW的剂量向水族箱水中添加氟西汀增加了5-HT的突触水平，进而降低了特定的攻击行为。氟西汀会周期性或有时甚至完全削弱雄性-雄性战斗，这是一项在暹罗斗鱼的行为学研究中应用的标准试验。在目前的研究中，最有效的剂量是40μg·g–1 BW。这种抗侵略性的机制取决于动物脑（特别是在缝核中）血清素能系统活性的增加，但是在该实验中未测量脑中5-HT的突触水平。因此，关于从第1天到第21天的接触会减少侵略性的假设被驳斥;假说是从第10（16）-14-28天开始接触氟西汀会迅速减少硬骨鱼的侵略性。获得的结果表明5-羟色胺在硬骨鱼的侵略性表达中起着复杂的作用，因为用5-HT1A受体激动剂WAY-100635进行的急性处理不会增加鱼类的侵略性[1]。我们强调了可以通过该实验解决的生理学概念，包括血清素能系统在侵略性调节中的作用，以及环境污染物和生理学在调节鱼类行为表达中的相互作用。

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