共查询到20条相似文献，搜索用时 31 毫秒
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银鱼科鱼类的分类分布和种群生态 总被引：16，自引：0，他引：16
本论及了银鱼科鱼类的分类、分布和种群生态特点。现知世界银鱼科鱼类共6属17种，分布于中国、韩国、朝鲜、日本、俄罗斯远东地区和越南北部湾的沿海。按分布地域和水温状况可把17种鱼类划分为暖温种、冷温种、温水和广温种4种类型。银鱼种群的共同生态特点是：（1）广盐性；（2）对温度适应范围广，多数种适低温；（3）栖息于水域中上层，以浮游动物为主要食物；（4）繁殖适应力强；（5）生命周期短，种群结构简单，群体数量消长变化快。 相似文献
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Jacqueline Wilson Craig W. Osenberg Colette M. St. Mary Craig A. Watson William J. Lindberg 《Aquarium Sciences and Conservation》2001,3(1-3):95-105
Artificial reefs may provide a useful tool to enhance production of marine ornamentals and to divert detrimental harvesting activities from sensitive natural habitat. The efficacy of this strategy depends, in part, on the extent to which artificial reefs contribute to new production (vs. attract fishes from natural habitat) and therefore benefit harvested populations on a local and regional basis. Here the attraction and production hypotheses and their application to marine ornamentals are presented. Specifically, it is discussed how the strength and timing of density dependence can affect the response of fish population dynamics to artificial reefs. In addition to this discussion, examples of density dependence in marine ornamentals and related reef fishes are provided. Based on this information, a simple conceptual model is presented to clarify the role of density dependence, and this is followed by a discussion on the use of artificial reefs in the management and production of marine ornamentals. Finally, unresolved scientific issues that remain to be addressed are provided. 相似文献
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江苏省鳑鮍属(Rhodeus)鱼类的研究 总被引：2，自引：1，他引：2
作者对4000多尾从江苏各地采集的鳑鮍属(Rhodeus)鱼类标本进行了研究,通过内部特征(下咽齿、肠长度、鳃耙数)和外部特征(斑纹、色泽等)的比较,认为(1)中华鳑鮍RhodeussinensisG櫣nther(1868)是有效种,它与高体鳑鮍Rhodeusocellatus(Kner,1866)在鳃耙数、肠长度和鳃孔后上方黑点有无等方面的区别是明显的;(2)过去一直被认为是有效种的彩石鳑鮍Rhodeuslighti(Wu,1931)是中华鳑鮍的同物异名;(3)江苏已知产三种,即方氏鳑鮍Rhodeusfangi(Miao,1934)、中华鳑鮍和高体鳑鮍。 相似文献
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