CN107509668A - 一种确定达氏鲟繁殖时间的方法 - Google Patents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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Abstract
本发明一种确定达氏鲟繁殖时间的方法,步骤包括:(1)、在水温达到16℃后对达氏鲟雌鱼鱼卵发育情况,以极化率作为参考指标;(2)、从检查日开始每天早8点、中午14点、晚20点测量水温,每次测量3次,将一天水温均值作为该天平均温度,将平均温度作为该天积温;(3)、根据检查后距离繁殖的时间与总积温公式:y=0.4765X2‑6.5724X+43.678确定具体繁殖日期。本方法首次提供了一种科学的、量化的确定达氏鲟人工繁殖时间方法;利用该种方法,准确确定繁殖时间,适时进行催产繁殖,提高鱼卵和受精率,为达氏鲟人工繁殖提供科学技术支持;通过准确提高繁殖和受精等方面的技术改进,为达氏鲟种群复壮打下基础。
Description
技术领域
本发明涉及水产养殖技术领域,具体来说是一种确定达氏鲟繁殖时间的方法。
背景技术
达氏鲟是我国国家一级重点保护动物,目前处于极度濒危状况。人工繁殖技术已成为目前恢复达氏鲟资源迫切需要解决的问题。在人工繁殖过程中,根据达氏鲟繁殖的特性,科学、准确的确定繁殖时间是繁殖的关键技术。
目前达氏鲟繁殖时间的确定是根据生产经验进行估计,无法准确的确定达氏鲟准确的繁殖时间。这就可能出现“人为”确定的繁殖时间不甚科学,常常出现鱼卵发育尚未成熟或鱼卵发育过度成熟,导致受精和鱼苗质量低下,从而影响达氏鲟繁殖。
针对存在的问题和亟待解决问题,根据实验研究结果,提出了较为科学的繁殖时间确定方法。
发明内容
本发明主要针对达氏鲟人工繁殖过程中存在的技术问题,提供一种科学的、量化的确定达氏鲟繁殖时间的方法,为达氏鲟的人工繁殖提供技术支持。
为实现上述目的,本发明采用的技术方案是:一种确定达氏鲟繁殖时间的方法,
(1)、在水温达到16℃后对达氏鲟雌鱼鱼卵发育情况,以极化率作为参考指标;
(2)、从检查日开始每天早8点、中午14点、晚20点测量水温,每次测量3次,将一天水温均值作为该天平均温度,将平均温度作为该天积温;
(3)、根据检查后距离繁殖的时间与总积温公式:y=0.4765X2-6.5724X+43.678确定具体繁殖日期,其中y为总体积,X为亲鱼检查后距离繁殖的天数。
进一步的,步骤(1)中,所述极化率为动物极与植物极的距离比值。
本发明的有益技术效果是:本方法首次提供了一种科学的、量化的确定达氏鲟人工繁殖时间方法;利用该种方法,准确确定繁殖时间,适时进行催产繁殖,提高鱼卵和受精率,为达氏鲟人工繁殖提供科学技术支持;通过准确提高繁殖和受精等方面的技术改进,为达氏鲟种群复壮打下基础。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种确定达氏鲟繁殖时间的方法,
(1)、在水温达到16℃后对达氏鲟雌鱼鱼卵发育情况,以极化率作为参考指标;
(2)、从检查日开始每天早8点、中午14点、晚20点测量水温,每次测量3次,将一天水温均值作为该天平均温度,将平均温度作为该天积温;
(3)、根据检查后距离繁殖的时间与总积温公式:y=0.4765X2-6.5724X+43.678确定具体繁殖日期,其中y为总体积,X为亲鱼检查后距离繁殖的天数。
其中,极化率为动物极与植物极的距离比值。
实施例2
以2015年为例,3月23日进行了检查,日积温为18,根据极化率计算,第一批编号为918和3903的亲鱼将在3月24凌晨至晚上产卵,实际产卵时间为3月24日早上九点,符合预测时间。同样,第二批、第三批、第四批和第五批都在预测的时间范围内进行了产卵。随后对2012-2017年实验数据的进行计算,均很好的符合这个规律,提取完善了公式方程。
最后所应说明的是:以上实施例仅用以说明而非限制本发明的技术方案,尽管参照上述实施例对本发明进行了详细说明,本领域的普通技术人员应该理解:依然可以对本发明进行修改或者等同替换,而不脱离本发明的精神和范围的任何修改或局部替换,其均应涵盖在本发明的权利要求范围当中。
Claims (2)
1.一种确定达氏鲟繁殖时间的方法,其特征在于,步骤包括:
(1)、在水温达到16℃后对达氏鲟雌鱼鱼卵发育情况,以极化率作为参考指标;
(2)、从检查日开始每天早8点、中午14点、晚20点测量水温,每次测量3次,将一天水温均值作为该天平均温度,将平均温度作为该天积温;
(3)、根据检查后距离繁殖的时间与总积温公式:y=0.4765X2-6.5724X+43.678确定具体繁殖日期,其中y为总体积,X为亲鱼检查后距离繁殖的天数。
2.根据权利要求1所述确定达氏鲟繁殖时间的方法,其特征在于,步骤(1)中,所述极化率为动物极与植物极的距离比值。
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Citations (5)
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CN103210864A (zh) * | 2013-04-25 | 2013-07-24 | 山东省海洋水产研究所 | 一种基于生长积温划分短蛸胚胎发育阶段的方法 |
CN103891678A (zh) * | 2012-12-31 | 2014-07-02 | 中国农业科学院植物保护研究所 | 一种昆虫发育有效积温、溢出积温计算的方法 |
CN105123575A (zh) * | 2015-07-27 | 2015-12-09 | 珠海市现代农业发展中心 | 一种可持续性观察大刺鳅胚胎发育的方法 |
CN105145424A (zh) * | 2015-08-04 | 2015-12-16 | 厦门大学 | 一种青蟹抱卵蟹阶段的培育方法 |
CN105284676A (zh) * | 2015-09-24 | 2016-02-03 | 中国水产科学研究院长江水产研究所 | 一种长鳍吻鮈亲鱼的人工培育方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN103891678A (zh) * | 2012-12-31 | 2014-07-02 | 中国农业科学院植物保护研究所 | 一种昆虫发育有效积温、溢出积温计算的方法 |
CN103210864A (zh) * | 2013-04-25 | 2013-07-24 | 山东省海洋水产研究所 | 一种基于生长积温划分短蛸胚胎发育阶段的方法 |
CN105123575A (zh) * | 2015-07-27 | 2015-12-09 | 珠海市现代农业发展中心 | 一种可持续性观察大刺鳅胚胎发育的方法 |
CN105145424A (zh) * | 2015-08-04 | 2015-12-16 | 厦门大学 | 一种青蟹抱卵蟹阶段的培育方法 |
CN105284676A (zh) * | 2015-09-24 | 2016-02-03 | 中国水产科学研究院长江水产研究所 | 一种长鳍吻鮈亲鱼的人工培育方法 |
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