论文部分内容阅读
为获知贻贝浮筏养殖海域表层(3 m)水温的季节变化规律及其对紫贻贝生长的影响,实测多年枸杞岛贻贝养殖场表层水温,并在一个养殖周期内分7航次采集紫贻贝样获取体质量、壳长等数据。结果显示,观测期内最高、最低表层水温分别为29.2℃和4.6℃。夏季表层水温日变幅可超过4℃,而春季与秋季低于2℃。紫贻贝体质量与月龄的多项式回归方程为:W=0.000 6M4+0.006 4M3-0.132 6M2+0.859 9M+0.6568(R2=0.999 1)。紫贻贝壳长与月龄的多项式回归方程为:L=0.000 8M4+0.057 7M3-1.099 7M2+7.536 6M+20.044(R2=0.998 9)。紫贻贝生长速率与水温呈指数关系,其表达式为Rw=0.102 8e0.119 5T(R2=0.741 3),将翌年3月前后紫贻贝的生长速率与水温之间指数关系分段计算时相关性更高,秋冬季为Rw1=0.148 8e0.068 3T(R2=0.936 0),春夏季为Rw2=0.118 8e0.128 9T(R2=0.993 2)。紫贻贝壳长生长速率与水温呈指数关系,其表达式为Rl=0.548 3e0.104 3T(R2=0.952 9)。不同年份之间,枸杞岛贻贝养殖场表层水温存在明显差异。春夏季是紫贻贝生长关键时期,春夏季持续相对低温可影响紫贻贝的产量。对养殖海域的水温进行实时观测,可获取水温变化动态,以及时调整紫贻贝的养殖策略。
In order to know the seasonal variation of surface water temperature (3 m) and the effect on the growth of mussel in mussel raft aquaculture, the surface water temperature of Mus musculus farms in Mus musculus was measured for many years and collected in 7 cycles in one aquaculture cycle Mussel-like body weight, shell length and other data. The results showed that the highest and lowest surface water temperature during the observation period were 29.2 ℃ and 4.6 ℃ respectively. The daily variation of surface water temperature in summer can exceed 4 ℃, while in spring and autumn it is lower than 2 ℃. The regression equation of the body mass of blue mussel and its age was: W = 0.000 6M4 + 0.006 4M3-0.132 6M2 + 0.859 9M + 0.6568 (R2 = 0.999 1). The polynomial regression equation for the length and the age of the mussel shell was: L = 0.000 8M4 + 0.057 7M3-1.099 7M2 + 7.536 6M + 20.044 (R2 = 0.998 9). The growth rate of the purple mussel is exponential to the water temperature, and its expression is Rw = 0.102 8e0.119 5T (R2 = 0.741 3). When the exponential relationship between the growth rate of purple mussel and the water temperature is calculated in stages Rw1 = 0.148 8e0.068 3T (R2 = 0.936 0) in autumn and winter, and Rw2 = 0.118 8e0.128 9T (R2 = 0.993 2) in spring and summer. The growth rate of the mussel shell has an exponential relationship with water temperature, and its expression is Rl = 0.548 3e0.104 3T (R2 = 0.952 9). There were significant differences in surface water temperature of mussel farms in wolfberry Island between different years. Spring and summer purple mussel growth is a critical period, the relatively low temperature in spring and summer can affect the production of mussel. Real-time observation of the water temperature in the aquaculture area can be obtained dynamic changes in water temperature, and timely adjustment purple mussel farming strategy.