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