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1.在水平光梯度内兰圆鲹(幼鱼、成鱼)自10~(-1)—10~3lux的照度区内都表现出趋光性,但随光强的增加未出现趋光性加强的趋势。 2.在因垂直照明而形成的明暗对比显著而非均匀性的光梯度内,兰圆鲹在弱照度区游动时间长,在强照度区游动时间短,其游动时间的比例为1:4。 3.兰圆鲹幼鱼的趋光性比成鱼强。 4.在水温为24.5—27℃时,鲐鱼(幼鱼)的适宜照度区为0.01—71ux范围内。 5.无论个体或群体实验,鲐鱼对光反应结果一致,而且群体反应更稳定。 6.对于五种海水鱼趋光性之比较看,兰圆鲹(幼鱼、成鱼)和鲐鱼(幼鱼)都属于对光有正反应,但不属于趋最强光的一种类型,其中兰圆鲹(幼鱼、成鱼)之趋光性比始鱼(幼鱼)强。
1. There is a tendency of phototropism in the light gradient of 10 ~ (-1) -10 ~ 3 lux in the light gradient of Nei Wan, but there is no tendency of phototropism enhancement with the increase of light intensity. In the light gradient formed by vertical illumination contrast but not uniform light gradient, Cymbidium long swimming in the weak illumination area for a long time, in the strong illumination area swimming time is short, the swimming time ratio of 1 : 4. 3. Ornithogalum juveniles phototaxis stronger than adult fish. 4. When the water temperature is 24.5-27 ℃, the suitable illuminance area of anchovy (juvenile fish) is within the range of 0.01-71ux. 5. No matter individuals or groups of experiments, the same reaction of anchovy to light, and the population more stable reaction. For the comparison of phototaxis of the five species of marine fish, Cymbidium odoratum (juvenile fish, adult fish) and mandarin fish (juvenile fish) all belong to a type that has a positive response to light but does not belong to the most intense light, Round 鲹 (juvenile, adult fish) than the light of the beginning of fish (juvenile) strong.