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本文根据11a来中国对虾越冬亲虾生产性培育试验资料的统计分析结果得出:亲虾性腺发育的起点温度为7.9±0.3℃,性腺发育成熟的有效积温为250.4±33.6日度,预测性腺发育成熟所需日期公式为。升高或降低越冬期间的基础水温可控制亲虾产卵时间迟早。产卵期间间歇升降温或连续升温,可控制亲虾集中产卵的次数和亲虾产卵持续时间。亲虾越冬期间,有利于提高亲虾存活率的水温,宜控制在8.0-13.0℃,不宜超过13.5℃,升降温幅度不宜超过1.5℃,以1.0℃左右为好。亲虾产卵期间,有利于亲虾存活率、产后卵子孵化率和亲虾再次产卵率的适宜水温为12.0-15.0℃,不宜超过16.0℃,升降温幅度不宜超过1.0℃,以1.0℃以下为好。
According to the statistical analysis of the experimental data of 11 days of prawn overwintering production of broodstock shrimp, the starting temperature of gonad development in broodstock was 7.9 ± 0.3 ℃ and the effective accumulated temperature of gonadal maturity was 250.4 ± 33 On the 6th, the formula for predicting the development of gonadal maturity is Increasing or decreasing the basal water temperature during winter can control the spawning time of spawning. Intermittent cooling or continuous warming during spawning can control the number of broodstock laying eggs and broodstock laying duration. During the winter, broodstock is conducive to raising the water temperature of the survival of broodstock, should be controlled at 8.0-13.0 ℃, should not exceed 13.5 ℃, heating and cooling rate should not exceed 1.5 ℃ to about 1.0 ℃ As well During the spawning period of broodstock, the suitable water temperature for the survival rate of broodstock, the hatching rate of postpartum eggs and the rate of re-spawning of broodstock were 12.0-15.0 ° C, not more than 16.0 ° C, not more than 1 ° C. 0 ℃, 1.0 ℃ below is better.