Abstract: Experimental studies on the respiration, feeding, growth and energy budget of pacific abalone (Haliotis discus hannai Ino) indicate that its oxygen consumption rate was correlated with shell length, body weight, temperature and alternate change of day and night.The relationships of oxygen consumption rate with shell length and body weight were all power function.The oxygen consumption between16 o'clock and 4 o'clock (night time) was higher than4 o'clock to 16 o'clock(day time), with a peak at 18～20 o'clock.At same temperature, the daily feeding rate of abalone and its body weight showed a relationship of power function.The daily relative feeding rate was increased with temperature.The rates of daily relative feeding and growth were decreased with increasing shell length and body weight.The total conversing efficiency of abalone on kelp (Laminaria japonica) was 53.0% at 14～20℃.The energy contents of abalone flesh, kelp and abalone's dry feces were 19.2, 8.57 and 7.23kJ·g^-1, respectively.At 14～20℃, among the assimilation energy by abalone, the feces accounted for 34.6～48.6 %, the metabolism by abalone self about 22.0～38.2%, and about 5.6～28.2% was used to accumulation for the flesh of body.

Key words: Haliotis discus hannai Ino, Feeding, Respiration, Growth, Energy budget, alpine meadow, community structure, fertilization, redundancy analysis