推荐回答(2个)
生物趋光性是一种生物对光靠近或远离的习性,也是生物应激性的一种,是长期自然选择的结果。有趋光性的淡水鱼如竹刀鱼、沙丁鱼、脂眼鲱、圆鰕、鲐、竹荚鱼、斑葵、银汉鱼、颚针鱼、鲙条鱼等。
一、竹刀鱼
竹刀鱼是约四种细长海鱼的统称。体型小,但也可长到35厘米(14吋)长;两腭呈喙状,牙细小,背、臀鳍後各另具一行小鳍。分布于热带和温带海域,生活接近海面,常跃出并飞掠水面。代表性种类有大西洋竹刀鱼(Scomberesox saurus)和太平洋竹刀鱼(Cololabis saira)。
二、沙丁鱼
沙丁鱼(Sardine)是硬骨鱼纲鲱形目鲱科沙丁鱼属、小沙丁鱼属和拟沙丁鱼属及鲱科某些食用鱼类的统称。也指制成油浸鱼罐头的普通鲱(Clupea harengus)以及其它小型的鲱或鲱状鱼。
沙丁鱼在香港被人们称沙甸鱼,又称萨丁鱼、鳁和鰯。小者长二寸,大者尺许,下颚较上颚略长,齿不显,背苍腹白,肉美,多用来制为罐头食品。最初在意大利萨丁尼亚捕获而得名,古希腊文称其“sardonios”意即“来自萨丁尼亚岛”。分布于南北纬度6~20度的等温带海洋区域中。
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三、脂眼鲱
生活于1~10米深的海域,属暖海性的表层洄游鱼类,喜爱高温、高盐的黑潮系统。活动力强,常在水质清澈的表层成群快速游泳,边游边忽左忽右的张口滤取浮游动物为食,属肉食性。产浮性卵。
四、斑葵
眼斑双锯鱼(学名:Amphiprion ocellaris),背鳍硬棘被橘黄色斑块分割为5-6枚,第4枚最长,约为头长的2.1-2.9倍。胸鳍、臀鳍、背鳍、尾鳍被橘黄色斑块分割部分都具黑缘,黑缘之外还有一透明外缘。体侧3块白斑明显可见,形状不规则,约在鳃盖外缘,身体中段及尾柄部各有一块。
五、鲐
鲐。也称鲭、油筒鱼、青花鱼chubmackerel。见干大多数暖海区的小型鲭科鱼(Pneumalopphorusgre×)。背青腹白。体侧上部有深蓝色波状条纹。生活在海中。黄海、渤海盛产。如:鲐文徵鱼样的斑纹)代称老年人oldman。
如:鲐颜倦迈的容颜、鲐稚倦幼、鲐叟倦人。鲐背(背上生鲐鱼般的斑纹)鲐,身体呈纺锤形、背青蓝色,头顶浅黑色,生活在海中,为中上层洄游性鱼类。供食用,肝可制鱼肝鱼。亦称“鲐巴鱼”、“鲭”、“油筒鱼”、“青花鱼”。
参考资料来源:百度百科-趋光性
参考资料来源:百度百科-沙丁鱼
参考资料来源:百度百科-竹刀鱼
参考资料来源:百度百科-脂眼鲱
参考资料来源:百度百科-眼斑双锯鱼
参考资料来源:百度百科-鲐
转自:鱼友之家
光性使鱼类对光刺激产生定向行为反应的特性。趋向光源的定向行为称正趋光性,背离光源的行为称负趋光性。许多鱼类具有正趋光性,如竹刀鱼、沙丁鱼、脂眼鲱、圆鯵、鲐、竹荚鱼、斑葵、银汉鱼、颚针鱼、鱀条鱼等。
鱼类对光刺激的反应有好奇性、适宜照度、索饵集群、条件反射、强制运动、迷惑和本能等种种假说。鱼类的趋光过程大致可以分为两个阶段:第一阶段是鱼受光刺激后,游近光源周围;第二阶段是鱼滞留在光源下游动。但趋光的鱼类在过了一段时间后,会因对光的适应、疲劳以及环境的变化等而离开光源游走。某些无趋光性成鱼,其幼鱼也有趋光反应,如香鱼、鳗鲡等的幼鱼。同一种鱼类,其趋光性随着发育阶段、雌雄性别、摄食量和鱼鳔结构而异,如幼鱼期比成鱼期趋光明显,摄食量少时容易被光诱集,有的鱼类如竹刀鱼在怀卵期的趋光性减弱。此外,鱼群被诱集后的起浮程度与鱼鳔结构有关。
趋光性有刺激相称性、保目标性和保留性三种类型。刺激相称性是由于两眼受光面的光量之差引起的刺激。而保目标性和保留性是鱼眼受光面部分受光量之差引起的刺激。鱼类为保持受光量没有差异而产生趋光。鱼眼对不同波长光的敏感曲线是不相同的,底层鱼类感受光谱范围很窄,约为410-650毫微米,而上层鱼类则具有较宽的光谱范围,约为400-750毫微米。
鱼类有一定的适宜照度范围,并且在这种照度的水层内集群。鱼类的适宜集群照度随环境条件的变化而改变,如竹刀鱼在水上灯照射下,集群于光源下方约2米处,并滞留相当长的时间。而在水下灯照射下,尽管光量小于水上灯,鱼类能围绕并游向光源,但滞留不久即离开光源。趋光性强的鱼也是集群性强的鱼种,如沙丁鱼、鯵、鲐、竹刀鱼、玉筋鱼等。在夜间鱼为了防御、索饵或发现同伴而长时间滞留于光源下,从而产生集群反应。
鱼类的趋光性与水温和月光有关。一般情况下,水温越高,趋光性越弱;反之,趋光性增强。月光明亮,趋光集群效果较差,如果增强光的照度,可以提高集群效果。
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