鲥鱼的驯养与生物学研究Ⅲ.1龄鲥鱼的驯养及其生长规律

Domestication of Tenualosa reevesii and its biology Ⅲ. Domestication of yearling reeves shad and its growth performance.

对池塘条件下 1龄鲥鱼不同方式的驯养试验表明 ,1龄鲥鱼生长较快 ,月均体长增加 1 8.1 9mm ,体重增加 2 4 .0 9g ;生长指标随季节和水温而变化 ,以初夏和秋末平均水温 2 9～ 30℃时生长较快 ;生长与池塘浮游生物量呈显著正相关 .1龄鲥鱼经 8个月套养 ,体重平均达 496.3g ;以施肥和投饲为主的精养试验 ,产量分别达 1 1 70和 1 0 87.5kg·hm- 2 ,个体均重达 2 0 3.3和 2 0 1 .3g .试验表明 。

Experiments on domestication of yearling reeves shad show that after using different domestication methods, its mean monthly body length and body weight are increased 18.9 mm and 24.09 g, growth index varies with season and water temperature, being rather high during early summer and late autumn when mean water temperature is 29～30℃, and growth rate is positively correlated with the biomass of zooplankton in the pond. After 8 months extensive rearing in a large pond, its mean body weight reaches to 496.3 g, and the output of it intensively reared in two ponds reaches to 1170 and 1087.5 kg·hm -2 , with a mean body weight of 203.3 and 201.3 g, respectively. The experiments show that artificial culture of reeves shad in pond is feasible.