Researches on Ecological and Meteorological Factors Affecting Crab Breeding
According to the ecological and meteorological observation data in crab breeding during 2011~2012 , the author ana-lyzed the mutual relations among crab’s body weight, water temperature, and crab’s age at different growth stages, and established the predictive model of crab ’ s average body weight by using multiple regression method .In addition, the predictive model of water temperature through air temperature was built based on the relationship between water temperature at various layers and air tempera -ture.The research results indicated that:(1) Under the same management measures , water temperature was a factor affecting the growth rate of crab .The crab grew fastest when the average water temperature was 25~28 ℃.( 2) There was a good correlation be-tween crab ’ s average body weight and water temperature from April to August .The predictive model of crab ’ s average body weight at various growth stages could be constructed by using regression method , and the predictive value obtained by this model was rela-tively close to the actual value in the year 2012.(3) The 3-day moving average air temperature was best correlated with the water temperature at various layers;this index could be used to predict the water temperature at various layers , and further forecast the av-erage body weight of crab at different growth stages .
CrabGrowth rateBody weightEcologyMeteorologyPredictive model
国家科技期刊平台
NSTL
万方数据
维普
