CAJ | 학술논문

在20℃下研究了盐度0、10、20、30、40和50对天津厚蟹鳃、肝胰脏及肌肉N a＋/K＋-A T P酶活力的影响。试验结果表明，天津厚蟹鳃中Na＋/K＋-ATP酶的活力为最高，其次为肝胰脏，肌肉最低，其间显著差异（P＜0．05）。在9 d试验中，自然海水对照组（30）及40、50盐度组天津厚蟹鳃Na＋/K＋-ATP酶的活力一直较稳定，只是40、50盐度组的Na＋/K＋-ATP酶的活力略高于30盐度组，彼此间差异不显著（P＞0．05）；其他各组3 h后（20盐度3 h时除外），鳃Na＋/K＋-ATP 酶的活力与试验开始时相比显著升高（ P＜0．05），盐度越低，升高越大，其间及与对照组相比差异显著（ P＜0．05）。第24 h ，0、10、20盐度组鳃Na＋/K＋-AT P 酶的活力达到最高或次高后，趋于稳定，并一直维持在较高的水平。但肝胰脏和肌肉中Na＋/K＋-ATP 酶的活力与试验开始时及对照组（30）相比，变化很小（P＞0．05）。
재20℃하연구료염도0、10、20、30、40화50대천진후해새、간이장급기육N a＋/K＋-A T P매활력적영향。시험결과표명，천진후해새중Na＋/K＋-ATP매적활력위최고，기차위간이장，기육최저，기간현저차이（P＜0．05）。재9 d시험중，자연해수대조조（30）급40、50염도조천진후해새Na＋/K＋-ATP매적활력일직교은정，지시40、50염도조적Na＋/K＋-ATP매적활력략고우30염도조，피차간차이불현저（P＞0．05）；기타각조3 h후（20염도3 h시제외），새Na＋/K＋-ATP 매적활력여시험개시시상비현저승고（ P＜0．05），염도월저，승고월대，기간급여대조조상비차이현저（ P＜0．05）。제24 h ，0、10、20염도조새Na＋/K＋-AT P 매적활력체도최고혹차고후，추우은정，병일직유지재교고적수평。단간이장화기육중Na＋/K＋-ATP 매적활력여시험개시시급대조조（30）상비，변화흔소（P＞0．05）。
The activities of Na+ /K+-ATPase in gill ,hepatopancreas and muscle were determined in mud-flat crab Helice tientsinensis exposed to different salinities (0 ,10 ,20 ,30 ,40 and 50) for 9 days at water temperature of 20 ℃ .The results showed that the order of the activity of the Na + /K+-ATPase in differ-ent organs and tissues was ranged at the same salinity as the following :gill> hepatopancreas> muscle , with significant difference (P<0 .05) .The stable activity of the Na+ /K+-ATPase in gill was observed in 9 day salinity exposure in the control group (30) ,40 ,and 50 groups ,just the latter two being slightly higher than the former ,without significant difference (P>0 .05) .There was significant higher activities of the Na+ /K+-ATPase in gills in other groups except 20 salinity group for 3 h salinity exposure than that at the beginning of the exposure (P<0 .05) ,increase in the activity with increase in salinity ,with signifi-cant difference (P<0 .05) from the control group .In the 24 h salinity exposure ,the maximal activity of the Na+ /K+-ATPase in gill was found in 0 ,10 and 20 groups ,followed by stable ,and then at a high lev-el .But the activity of Na+ /K+-A T Pase in hepatopancreas and muscle in the crab exposed to the salinity for 9 days was kept few change compared with the crab in the control group (P>0 .05) .