| 盐度对条石鲷幼鱼Na+/K+-ATP酶活力的影响 |
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| 引用本文： | 孙鹏,彭士明,尹飞,施兆鸿.盐度对条石鲷幼鱼Na+/K+-ATP酶活力的影响[J].水产学报,2010,34(8):1204-1209. |
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| 作者姓名： | 孙鹏 彭士明 尹飞 施兆鸿 |
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| 作者单位： | 中国水产科学研究院东海水产研究所,农业部海洋与河口渔业重点开放实验室,上海,200090 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费(东2009M05,东2008M14,东2009M08);沪农科攻字2007(4-1) |
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| 摘 要： | 研究了盐度变化对条石鲷幼鱼鳃、肾脏和肝脏中Na+/K+-ATP酶活力的影响。经不同盐度(8、18、28、38、48)的处理,条石鲷幼鱼3种组织Na+/K+-ATP酶活力均受到不同程度的影响。经低盐度(8和18)处理的幼鱼鳃Na+/K+-ATP酶活力在前6 h略微增加,然后逐渐降低,在处理24 h时下降到最低,之后又开始增加。经高盐度(38和48)处理时,鳃中Na+/K+-ATP酶活力在前6 h有所降低,然后迅速升高,并在处理24 h时达到最大,之后酶活力逐渐降低,并在处理96 h后与对照组无显著性差异(P>0.05)。所有盐度处理组幼鱼肾脏Na+/K+-ATP酶活力在处理开始6 h均稍有增加,而从处理6 h开始降低,在处理24 h下降到最低,此后酶活力又呈现增加的趋势。在盐度为8的处理组中,肝脏Na+/K+-ATP酶活力与肾脏中变化趋势相似,而其它3组则逐渐降低,在处理24 h时达到最低,之后又逐渐增加。结果表明,条石鲷幼鱼适盐范围广,具有较强的渗透压调节能力。3种组织的Na+/K+-ATP酶活力酶活性在盐度为18～38的范围内变化不明显,而在8和48的盐度下变化较大,最终酶活力均高于对照组。与肾脏相比,盐度变化对鳃和肝脏Na+/K+-ATP酶活力的影响较大。
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| 关 键 词： | 条石鲷 幼鱼 盐度 Na+/K+-ATP酶 |
| 收稿时间： | 2010/1/10 0:00:00 |
| 修稿时间： | 2010/4/12 0:00:00 |
Effects of salinity on activity of Na+/K+-ATPase in juvenile Oplegnathus fasciatus |
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| PEHG Shiming,YIN Fei and SHI Zhaohong.Effects of salinity on activity of Na+/K+-ATPase in juvenile Oplegnathus fasciatus[J].Journal of Fisheries of China,2010,34(8):1204-1209. |
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| Authors: | PEHG Shiming YIN Fei and SHI Zhaohong |
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| Affiliation: | East China Sea Fisheries research Institute, Chinese Academy of fishery Sciences,East China Sea Fisheries research Institute, Chinese Academy of fishery Sciences,East China Sea Fisheries research Institute, Chinese Academy of fishery Sciences,East China Sea Fisheries research Institute, Chinese Academy of fishery Sciences |
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| Abstract: | Effects of salinity on activity of Na+/K+-ATPase in gill,kidney and liver of Oplegnathus fasciatus were studied.The activity of Na+/K+-ATPase changed when Oplegnathus fasciatus was treated with different salinity of 8,18,28,38 and 48.Following fish treated with low salinity(8 and 18),the activity of Na+/K+-ATPase in gill increased a little during first 6 h,then it dropped and reached minimum at 24 h.Afterwards,it increased again.As to fish treated with high salinity of 38 and 48,the activity of Na+/K+-ATPase in gill decreased a little during first 6 h,then increased and reached maximum at 24 h.After that,it dropped slowly again,and had no significant difference from that in control groups at 96 h(P>0.05).The activity of Na+/K+-ATPase in kidney of all treated groups increased a little during first 6 h.After that,it dropped gradually and reached minimum at 24 h.Then,it increased again.The activity of Na+/K+-ATPase in liver had similar trend with that in kidney when treated with the lowest salinity of 8.But as to juvenile in other 3 salinity groups,the activity of Na+/K+-ATPase decreased gradually and reached minimum at 24 h,then it increased again.Our result indicated that Oplegnathus fasciatus is a highly euryhaline fish and a very strong osmoregulator,salinity with the range from 18 to 38 had only a little influence on the activity of Na+/K+-ATPase in gill,kidney and liver.But extreme salinity(8 and 48)could exert a more obvious influence.And change of salinity had more influence on the activity of Na+/K+-ATPase in gill and liver than that in kidney. |
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