Growth Index and Oxygen Consumption Rate in the Period of Post-embryonic Development of Onychodactylus fischeri

[Objective] In order to reveal the relationship between body weight,length and age in the period of post-embryonic development of Onychodactylus fischeri,the relationship between oxygen consumption rate and body weight with oxygen consumption rate in different developmental stages.[Method] We observed 139 Onychodactylus fischeri in the period of post-embryonic development,measured their body weight and body length to conduct the clustering analysis by the way of using mathematical statistics;then we determined the oxygen consumption rate of larval,subadult and adult Onychodactylus fischeri in the resting state with the enclosed energy metabolism analyzer.[Result] The results showed that the average body weight and length were both positively correlated to age;In resting state,the adult Onychodactylus fischeri had the lowest oxygen consumption rate,whereas the subadult had the highest oxygen consumption rate,and negatively correlated to the body weight.[Conclusion] The growth and oxygen consumption rate of the Onychodactylus fischeri in the period of post-embryonic development shows the characteristics of the cold water streams animals.