Ontogeny and Sexual Differences in Swimming Proximity to Conspecifics in Response to Visual Cues in Medaka Fish
Ontogeny and Sexual Differences in Swimming Proximity to Conspecifics in Response to Visual Cues in Medaka Fish
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DOI：
10.2108/zs150213
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发表时间：
2016-06-01
影响因子：
0.9
通讯作者：
Takeuchi, Hideaki
中科院分区：
文献类型：
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作者：
Isoe, Yasuko;Konagaya, Yumi;Takeuchi, Hideaki
成年青鳉表现出复杂的社会行为，主要依赖于来自同种的视觉线索。然而，个体发育的视觉介导的社会行为从幼虫/少年到成年青鳉鱼，是未知的。在本研究中，我们建立了一个简单的行为模式，以评估游泳接近同种的视觉线索的基础上，在个体间的相互作用，两个青鳉鱼整个生命。当两条鱼被分别放置在一个圆柱形的缸与同心透明的墙壁，这两条鱼保持密切接近对方。一个正常的鱼在坦克内保持接近一个视神经切断鱼在坦克外，而匡威就不正确了。这种行为模式使我们能够量化缸内的一条鱼的视觉诱导动机。从幼鱼/幼鱼到成鱼都检测到这种接近。幼鱼，然而，保持密切的关系，不仅同种，但也heterospecific。随着生长阶段的增加，异种的接近程度下降，这表明，shoaling偏好对同种和/或视觉能力，以识别同种细化和建立根据生长阶段。此外，成年雌鱼的接近性受到其生殖状态和社会熟悉度的影响。只有在产卵前，成年女性保持更接近熟悉的男性，而不是不熟悉的男性，这表明接近的女性特定的方式受到熟悉。这个简单的行为范例将有助于我们理解的神经基础的视觉介导的社会行为的发展，使用青鳉鱼。
Adult medaka fish (Oryzias latipes) exhibit complex social behaviors that depend mainly on visual cues from conspecifics. The ontogeny of visually-mediated social behaviors from larval/juvenile to adult medaka fish, however, is unknown. In the present study, we established a simple behavioral paradigm to evaluate the swimming proximity to conspecifics based on visual cues in an inter-individual interaction of two medaka fish throughout life. When two fish were placed separately in a cylindrical tank with a concentric transparent wall, the two fish maintained close proximity to each other. A normal fish inside the tank maintained proximity to an optic nerve-cut fish outside of the tank, while the converse was not true. This behavioral paradigm enabled us to quantify visually-induced motivation of a single fish inside the tank. The proximity was detected from larval/juvenile to adult fish. Larval fish, however, maintained close proximity not only to conspecifics, but also to heterospecifics. As the growth stage increased, the degree of proximity to heterospecifics decreased, suggesting that shoaling preferences toward conspecifics and/or visual ability to recognize conspecifics is refined and established according to the growth stage. Furthermore, the proximity of adult female fish was affected by their reproductive status and social familiarity. Only before spawning, adult females maintained closer proximity to familiar males rather than to unfamiliar males, suggesting that proximity was affected by familiarity in a female-specific manner. This simple behavioral paradigm will contribute to our understanding of the neural basis of the development of visually-mediated social behavior using medaka fish.