Journal of East China Normal University(Natural Sc ›› 2004, Vol. 2004 ›› Issue (1): 88-92.

• Article • Previous Articles     Next Articles

Analysis on the Contents of Protein and Amino Acids in Cherax quadricarinatus during Different Embryonic Development Stages

LUO Wen, ZHOU Zhong-fang, ZHAO Yun-long, YANG Zhi-biao, ZHANG Ming-feng   

  1. School of Life Sciences, East China Normal University, Shanghai 200062, China
  • Received:2003-01-08 Revised:2003-05-04 Online:2004-03-25 Published:2004-03-25
  • Contact: ZHAO Yun-long

Abstract: The compositions of protein and amino acids were measured and analyzed during the embryonic development of Cherax quadricarinatus. The results indicated that the contents of total protein and total amino acids were all downtrend. The total amino acid contents reduced from 58.05 % (dry weight) at the fertilized egg stage to 47.49% at the prepare-hatching stage. The correlation between the total amino acid and the essential amino acid(except methionine) was prominent, the coefficients of variation were from 8. 25 0o to
13. 34N. In the non-essential amino acid，the contents of glutamine acid and aspartic acid were relatively higher, but the content of cysteine was relatively lower. The results above indicated that protein and amino acid were not only the construction substances of embryonic development, but also the dominating energy sources.

Key words: embryonic development, protein content, amino acids composition, Gterax quadricarinatus, embryonic development, protein content, amino acids composition

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