极地研究

极地研究 ›› 1993, Vol. 4 ›› Issue (2-English): 11-20.

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ANALYSIS OF THE STOMACH CONTENTS OF ANTARCTIC KRILL, EUPHAUSIA SUPERBA DANA

 Zhu Genhai   

  1. Second Institute of Oceanography, SOA, Hangzhou 310012
  • 出版日期:1943-06-30 发布日期:1943-06-30
  • 通讯作者: Zhu Genhai
  • 基金资助:

    The project Supported by National Natural Science Foundation of China, No: 39000021.

ANALYSIS OF THE STOMACH CONTENTS OF ANTARCTIC KRILL, EUPHAUSIA SUPERBA DANA

 Zhu Genhai   

  1. Second Institute of Oceanography, SOA, Hangzhou 310012
  • Online:1943-06-30 Published:1943-06-30
  • Contact: Zhu Genhai
  • Supported by:

    The project Supported by National Natural Science Foundation of China, No: 39000021.

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摘要：

Diet components of Euphausia superba of 12 sexual maturity stages from the adjacent waters off the South Shetland Islands, Antarctica were analysed. The major points observed are summaried as follows: 135 taxa of nano-and microorganisms were found in stomach contents of Euphausia superba, of which, the diatoms make up 60% of the total species number. Planktonic nano-diatoms and nano-flagellates smaller than 20μm in diameter accounted for 85% of diet total number. The dominant species in the stomach contents were Nitzschia angulata f. minima, N. curta f, minima, N. curta,Chrysostomum sp., the mean cell number of these species was about 56.99 cells/ind., The stomach fullness increases gradually with the sexual mature of the krill.

关键词: the South Shetland Islands, Euphausia superba, stomach contents, nano-, microalgae

Abstract:

Diet components of Euphausia superba of 12 sexual maturity stages from the adjacent waters off the South Shetland Islands, Antarctica were analysed. The major points observed are summaried as follows: 135 taxa of nano-and microorganisms were found in stomach contents of Euphausia superba, of which, the diatoms make up 60% of the total species number. Planktonic nano-diatoms and nano-flagellates smaller than 20μm in diameter accounted for 85% of diet total number. The dominant species in the stomach contents were Nitzschia angulata f. minima, N. curta f, minima, N. curta,Chrysostomum sp., the mean cell number of these species was about 56.99 cells/ind., The stomach fullness increases gradually with the sexual mature of the krill.

Key words: the South Shetland Islands, Euphausia superba, stomach contents, nano-, microalgae