期刊文献+

南极普里兹湾夏季边缘浮冰区两种主要浮游桡足类的代谢研究 被引量:3

METABOLISM OF TWO DOMINATING COPEPODS: - CALANOIDES ACUTUS- AND- METRIDIA GERLACHEI- IN THE MARGINAL ICE ZONE OF THE PRYDZ BAY, ANTACTICA IN SUMMER
下载PDF
导出
摘要 于 1 998年 1 2月至 1 999年 1月南极夏季 ,对南大洋普里兹湾临近海域两种主要浮游桡足类Calanoides acutus和 Metridia gerlachei的耗氧率和排氨率进行了现场调查 ,同时对其代谢产物对海洋初级生产的贡献进行了探讨。调查结果表明 ,C. acutus的体碳、氮含量占干重百分比分别为 48.4%~ 48.6%和 6.1 %~ 6.5% ;M.gerlachei分别为 47.1 %~ 50 .1 %和 5.9%~ 7.4%。C.acutus在不同海区耗氧率有一定的差异 (0 .2 2 6~ 0 .558μl O2 mg- 1h- 1)。排氨率变化范围为 0 .0 1 4~ 1 .0 58μg N mg- 1h- 1,最高值位于浮冰区 - 9站 ,在陆冰缘区 (FI站 )最小。不同海域其排氨率的高低与现场水温无相关性。不同站位上 C.acutus的 O:N比相差 5~ 6倍。M.gerlachei耗氧率为 0 .488~ 0 .644μl O2 mg- 1h- 1,排氨率为 0 .0 1 5~ 0 .0 34μg N mg- 1h- 1。根据代谢实验结果和桡足类自身碳氮含量推算 ,其维持正常代谢的碳、氮日损失率分别为 0 .59%~ 1 .99%和 0 .44%~ 3.2 7%。桡足类群体每天的碳需求量占初级生产力的 0 .6%~ 2 9.2 % ,氨氮日输出量占初级生产所需氮盐的 0 .2 %~ 38.0 %。 Metabolic rates (oxygen consumption and ammonia excretion) of two dominating copepods, Calanoides acutus and Metridia gerlachei , were measured during the austral summer (December 1998-January 1999), in the marginal ice zone of the Prydz Bay. The elemental composition (C and N) were also analysed on the specimens used in these metabolic experiments. The results showed that C. acutus was 48.4%-48.6% of dry weight in carbon content and 6.1%-6.5% of dry weight in nitrogen content. Metridia gerlachei was 47.1%-50.1% and 5.9%-7.4%, relatively. Oxygen consumption rates of C. acutus were variant in the different areas (0.226 to 0.558μl O 2mg -1 h -1 ). And its ammonia excretion rates ranged from 0.014 to 1.058μg N mg -1 h -1 . The ratio between the rates (O∶N) exhibited a large defference(5-6 times). For Metridia gerlachei , oxygen consumption rates were 0.488-0.644μl O 2mg -1 h -1 and ammonia excretion rates were 0.015-0.034μg N mg -1 h -1 . From the results of metabolic rate measuremts and elemental analyses, daily losses of body carbon and nitrogen were estimated to be 0.59% - 1.99% and 0.44% - 3.27%, respectively. The metabolic carbon requirements represented about 0.6%-29.2% of primary production per day, and their excretion of ammonia contributed 0.2%-38.0% of daily phytoplankton nitrogen demand.
出处 《极地研究》 CAS CSCD 2000年第3期183-190,共8页 Chinese Journal of Polar Research
基金 中国科学院95重大A!( KZ951 -A1 -2 0 5) 国家科技攻关!(98-927-0 1-0 2)资助项目
关键词 普里兹湾 南极 夏季 浮游桡足类 耗氧率 排氨率 Calanoides acutus, Metridia gerlachei, metabolism, Prydz Bay, Antarctica.
  • 引文网络
  • 相关文献

参考文献12

  • 1[1]Alcaraz M et al. (1998):Antarctic zooplankton metabolism: carton requirements and ammonium excretion ofsalps and crustacean zooplankton in the vicinity of the Bransfield Strait during January 1994, Journal ofMarine Systems, 17, 347-359.
  • 2[2]Alcaraz M,Saiz E and Estrada M(1994) :Excretion of ammonia by zooplankton and its potential contribution tonitrogen requirements for primary production in the Catalan Sea(NW Mediterranean), Mar. Biol. , 177,163-170.
  • 3[3]Banse K(1995) :Zooplankton.. Pivotal role in the control of ocean production, ICES d. Mar. Sci. , 52, 265277.
  • 4[4]Biggs DC(1982):Zooplankton excretion and NH4+ cycling in near-surface waters of the Southern Ocean, I. RossSea, austral summer 1977-78, Polar Biol. 1, 55-67.
  • 5[5]Calbet et al. (1996):Plankton herbivorous food webs in the Catalan Sea (NW Mediterranean) : temporalvariability and comparison of indices of phyto-zooplankton coupling based on state variables and rate processes, J. PlanktonRes. ,18, 2329-2347.
  • 6[6]Conover RJ and Huntley M (1991): Copepods in ice-covered seas-distribution, adaptations to seasonallylimited food, metabolism, growth patterns and life cycle strategies in polar seas, Journal of Marine Systems,2, 1 41.
  • 7[7]Hopkins TL(1971) :Zooplankton standing crop in the Pacific sector of the Antarctic, In:Biology of theAntarctic Seas IV, Ed. by Llano GA and Wallen IE. Washington DC, American Geophysical Union, 347-362.
  • 8[8]Ikeda T and Hing FE(1981):Metabolic activity of zooplankton from the Antarctic Ocean. Aust. J. Mar.Freshwater Res., 32, 921-930.
  • 9[9]lkeda T and Mitchell AW(1982):Oxygen uptake. ammonia excretion and phosphate excretion by krill and otherantarctic zooplankton in relation to their body size and chemical composition. Mar. Biol. ,71. 283-298.
  • 10[10]lkeda T And Bruce B(1986) :Metabolic activity and elemental composition of krill and other zooplankton fromPrydz Bay, Antarctic, during early summer (November-December), Mar. Biol. , 92, 545- 555.

同被引文献58

引证文献3

二级引证文献32

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部