环境温度和盐度对墨吉明对虾(Fenneropenaeus merguiensis)胚胎发育的影响
Oceanologia et Limnologia Sinica(2014)
Abstract
以自然成熟的亲虾为材料,观察并描述了墨吉明对虾(Fenneropenaeus merguiensis)从受精卵到幼体孵化出膜的胚胎发育过程.结果显示,在水温29℃,盐度28的条件下,墨吉明对虾整个胚胎发育过程需要11h左右.水温和盐度对幼体出膜时间和受精卵的孵化率均有显著的影响(P<0.05).孵化水温从32℃下降到23℃时,幼体出膜时间由555min (9.25h)增加到1108min (18.46h).胚胎发育的最适水温为26-32℃,在此温度范围内,墨吉明对虾的幼体出膜时间与水温呈负相关.胚胎发育的最适盐度25-35,在此范围内,墨吉明对虾的幼体出膜时间和孵化率均无显著差异(P>0.05),说明墨吉明对虾的胚胎发育的盐度范围较广.
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Key words
embryonic development, temperature,Fenneropenaeus merguiensis, salinity
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