从抱卵雌虾腹部剥离的东方扁虾(Thenus orientalis Lund,1793)胚胎在四组恒温水浴(22℃±0.2℃,25℃±0.2℃,28℃±0.2℃,31℃±0.2℃)下进行的离体培养孵化实验取得成功.通过监测以胚胎眼指数来指示胚胎发育进程,建立...从抱卵雌虾腹部剥离的东方扁虾(Thenus orientalis Lund,1793)胚胎在四组恒温水浴(22℃±0.2℃,25℃±0.2℃,28℃±0.2℃,31℃±0.2℃)下进行的离体培养孵化实验取得成功.通过监测以胚胎眼指数来指示胚胎发育进程,建立了四组温度下眼指数对时间的直线回归图。在此基础上,确立了单位时间内眼指数增长值与培养温度之间的线性关系,用于预报不同温度下胚胎的孵化日期.此外,还结合亲虾抱卵孵化实验和自然水温下离体孵化实验的结果探讨了东方扁虾胚胎孵育机制及复眼形成期发育所需要的有效积温。展开更多
The fatty acid composition of "Marine" Chlorella was studied and compared with a typical green alga, Dunaliella sali na. The results showed that "Marine" Chlorella contained high abundance of the a...The fatty acid composition of "Marine" Chlorella was studied and compared with a typical green alga, Dunaliella sali na. The results showed that "Marine" Chlorella contained high abundance of the acids 16: 0, 16 (n-7) and 20: 5 (n- 3), which together accounted for 75. 8 % of total fatty acids. This composition character differs from green algae, but more similar to Nannochloropsls oculata and other specise of Eustigmatophyceae, so the "Marine" chlorella is belong to Eu- stigmatophyceae in taxonomy.展开更多
文摘从抱卵雌虾腹部剥离的东方扁虾(Thenus orientalis Lund,1793)胚胎在四组恒温水浴(22℃±0.2℃,25℃±0.2℃,28℃±0.2℃,31℃±0.2℃)下进行的离体培养孵化实验取得成功.通过监测以胚胎眼指数来指示胚胎发育进程,建立了四组温度下眼指数对时间的直线回归图。在此基础上,确立了单位时间内眼指数增长值与培养温度之间的线性关系,用于预报不同温度下胚胎的孵化日期.此外,还结合亲虾抱卵孵化实验和自然水温下离体孵化实验的结果探讨了东方扁虾胚胎孵育机制及复眼形成期发育所需要的有效积温。
文摘The fatty acid composition of "Marine" Chlorella was studied and compared with a typical green alga, Dunaliella sali na. The results showed that "Marine" Chlorella contained high abundance of the acids 16: 0, 16 (n-7) and 20: 5 (n- 3), which together accounted for 75. 8 % of total fatty acids. This composition character differs from green algae, but more similar to Nannochloropsls oculata and other specise of Eustigmatophyceae, so the "Marine" chlorella is belong to Eu- stigmatophyceae in taxonomy.
