The effect of temperature, salinity and body length on ammonia excretion rate of Daphniopsis tibetana Sars PRELIMINARY STUDY ON POPULATION STRUCTURE OF TRACHYPENAEUS CURVIROSTRIS(STIMPSON) IN HUANGHAI AND BOHAI SEAS Effects of host stage of Phenacoccus solenopsis Tinsley on the fitness of the offspring of Aenasius bambawalei Hayat. The effect of salinity,temperature and body length on oxygen consumption of Daphniopsis tibetana Sars