极地研究

极地研究 ›› 1995, Vol. 6 ›› Issue (2-English): 30-42.

• 目次 • 上一篇    下一篇

Filtration rate and ingestion rate of Antarctic krill measured in vitro and in situ

 Zhong Xuefeng and Wang Rong   

  1. Institute of Oceanology, Academia Sinica, Qingdao 266071, China
  • 出版日期:1945-06-30 发布日期:1945-06-30
  • 通讯作者: Zhong Xuefeng

Filtration rate and ingestion rate of Antarctic krill measured in vitro and in situ

 Zhong Xuefeng and Wang Rong   

  1. Institute of Oceanology, Academia Sinica, Qingdao 266071, China
  • Online:1945-06-30 Published:1945-06-30
  • Contact: Zhong Xuefeng

PDF (PC)

845

摘要：

During the summer cruise of R/V JIDI in 1992/1993 filtration rate and ingestion rate of Antarctic krill Euphausta superba Dana were measured by constant volume incubation, flow-through incubation and gut fluorescence method in the southern part of the Scotia Sea and in the Prydz Bay region. The mean filtration rate obtained by different methods ranged form 189. 8 to 459. 6 ml/h for sub-adult (60.6～205. 4 mg dry weight), and 253. 6～902. 1ml/h for adult (166. 8～598. 7 mg dry weight). No significant methedological effect was found on measurement of filtration rate if suitable experimental conditions were used with special respect to animal density and vessel volume. Within the range of food concentration (0. 44～3. 05μg chl-α/l) of our experiments. The ingestion rate increased with the increasing of food concentration, while the filtration rate didn't increase. The ingestion rate obtained by gut fluorescence method had no correlation with ambient chlorophyll α concentration.

关键词: filtration rate, ingestion rate, Antarctic krill, Southern Ocean

Abstract:

During the summer cruise of R/V JIDI in 1992/1993 filtration rate and ingestion rate of Antarctic krill Euphausta superba Dana were measured by constant volume incubation, flow-through incubation and gut fluorescence method in the southern part of the Scotia Sea and in the Prydz Bay region. The mean filtration rate obtained by different methods ranged form 189. 8 to 459. 6 ml/h for sub-adult (60.6～205. 4 mg dry weight), and 253. 6～902. 1ml/h for adult (166. 8～598. 7 mg dry weight). No significant methedological effect was found on measurement of filtration rate if suitable experimental conditions were used with special respect to animal density and vessel volume. Within the range of food concentration (0. 44～3. 05μg chl-α/l) of our experiments. The ingestion rate increased with the increasing of food concentration, while the filtration rate didn't increase. The ingestion rate obtained by gut fluorescence method had no correlation with ambient chlorophyll α concentration.

Key words: filtration rate, ingestion rate, Antarctic krill, Southern Ocean