蓝圆鲹和鲐鱼趋光行为的研究
STUDIES ON THE PHOTOTACTIC BEHAVIOR OF ROUND SCAD AND CHUB MACKEREL
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摘要: 关于鱼类趋光特性的研究,国外已有报导[1].例如,鱼在光梯度条件下选择最适照度区[2-7]、不同生理生态因素[8-12]、月光[13-15]、颜色光[16-22]对鱼类趋光性的影响等已有不少研究.蓝圆鲹(Decapterus maruadsi T.& S.)、鲐鱼(Pneumatophorus japonicus Houtt)是我国主要的中上层鱼类资源.为此,通过光梯度实验,研究这两种鱼属于哪种趋光类型及其最适照度区的范围,研究背景光(模拟月光)、不同颜色光对它们的趋光性的影响,这些都将对灯光捕捞实践中光强范围、颜色光的选择、克服月光影响的措施等提供重要的科学根据.Abstract: Phototaxis of Round scad and chub Mackerel in different photogradient is influenced by the external and internal factors,such as illuminating systen,temperature and age.Experimental results show that although the type of phototaxis and optimum illumination depend on experimental conditions,they are in agreement with the experience of production practice.
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