欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2011, Vol. 30 ›› Issue (03): 533-538.

• 研究报告 • 上一篇    下一篇

石斑鱼工厂化育苗水体浮游原生动物种群增长与生产量

王珺,陈国华,林彬,黄宗文,王永波,郭仁湘,杨薇   

  1. 海南大学海洋学院|热带生物资源教育部重点实验室| 海口 570228
  • 出版日期:2011-03-08 发布日期:2011-03-08

Population growth performance and productivity of ciliated protozoa community under two different industrialized grouper larval rearing systems.

WANG Jun, CHEN Guo-hua**, LIN Bin, HUANG Zong-wen, WANG Yong-bo, GUO Ren-xiang, YANG Wei   

  1. Key Laboratory of Tropical Biology Resources, Ministry of Education, Ocean College, Hainan University, Haikou 570228, China
  • Online:2011-03-08 Published:2011-03-08

摘要: 设计二种石斑鱼工厂化育苗方法,测定水体的浮游原生动物种类组成、生物量,采用原位测定法研究水体原生动物的种群增长和生产量。结果表明:加菌组出现原生动物13种,总密度87.3×103 ind·L-1,总生物量502.9 mg·m-3,生物量较大的种类有阔口游仆虫(Euplotes eurystoma)、叶鞭虫(Phyllomitus sp.)、旋回侠盗虫(Strobilidium gyrans)、尖毛虫(Oxytricha sp.)等;加藻组出现原生动物9种,总密度60.8×103 ind·L-1,总生物量70.3 mg·m-3,生物量较大的种类有尖毛虫、旋回侠盗虫、叶鞭虫等。加菌组种群增长率较高的种类有拟急游虫(Strombidinopsis sp.)0.0578、弹跳虫(Halteria sp.)0.0493、周毛虫(Cyclidium litomesum)0.0405、太阳虫(Actinophrys sp.)0.0383、中缢虫(Mesodimium sp.)0.0373;加藻组种群率增长较高的种类有匕口虫(Lacrymaria sp.)0.0153、旋回侠盗虫0.0144、急游虫(Strombidium sp.)0.0117、叶鞭虫0.0100。加菌组原生动物群落总生产量10.232 mg·m-3·h-1,生产量较高的种类有阔口游仆虫6.543、旋回侠盗虫0.992、变形虫(Amoeba sp.)0.462、尖毛虫0.413 mg·m-3·h-1;加藻组原生动物总生产量1.22 mg·m-3·h-1,生产量较高的种类有太阳虫0.437、旋回侠盗虫0.350、叶鞭虫0.194、中縊虫0.159 mg·m-3·h-1。分析认为,加菌组原生动物种类更丰富、生物量较大,相同种类的种群增长率也较高,表明加菌的方法进行石斑鱼育苗能为石斑鱼仔鱼提供更丰富的开口期饵料。育苗水体中,一些种类的种群增长率较高,但生物量并不大,这些种类在育苗池中的密度被大型浮游动物所控制,暗示着这些种类在育苗人工生态系统的物质循环中具有重要的作用。

关键词: 中华蜜蜂, 栖息环境, 种间竞争, 群体分布

Abstract: An in situ experiment was conducted to study the population growth performance and productivity of protozoa community under two different industrialized grouper larval rearing systems. In the bacteria-added group, 13 new species of protozoa were recorded, and the total population density and the total biomass of protozoa community were 87.3×103 ind·L-1 and 502.9 mg·m-3; in the microalgae-added group, there were 9 new species derived, and the total population density and the total biomass of protozoa community were 60.8×103 ind·L-1 and 70.3 mg·m-3, respectively. For these two groups, Phyllomitus sp., Strobilidium gyrans, and Oxytricha sp. were the dominant species. The species with relatively high population growth rate in the bacteria-added group were Strombidinopsis sp. (0.0578),Halteria sp. (0.0493), Cyclidium litomesum (0.0405), Actinophrys sp. (0.0383), and Mesodimium sp. (0.0373), and those in the microalgae-added group were Lacrymaria sp. (0.0153), Strobilidium gyrans (0.0144), Strombidium sp. (0.0117) and Phyllomitus sp. (0.0100). The total protozoa community productivity varied with rearing-system, being 10.232 mg·m-3·h-1 in bacteria-added group and 1.22 mg·m-3·h-1 in microalgae-added group. In bacteria-added group, Euplotes eurystoma, Strobilidium gyrans, Amoeba sp., and Oxytricha sp. had higher productivity than other species; and in microalgae-added group, the species with relatively higher productivity were Actinophrys sp., Strobilidium gyrans, Phyllomitus sp., and Mesodimium sp. Overall, the ponds with bacteria added had more abundant diversity, higher biomass, and population growth rate of protozoa community than the ponds with microalgae added, and hence, the water culturing regime with bacteria added could attain more live preys during the mouth-opening period of grouper fry. In the cultured water, some species had high population growth rate, but their biomass was not large. The density of these species in breeding ponds was controlled by large zooplanktons, indicating that these plankton species probably played an important role in the balance of artificial ecosystem in the cultured water.

Key words: Apis cerana cerana, Habitat, Interspecific competition, Colony distribution