CAJ | 학술논문

文章研究了盐度胁迫下魁蚶（ Anadara broughtonii）稚贝（壳长25~35 mm）血淋巴渗透压和鳃Na＋/K＋-ATP酶活力的变化。结果显示，突变胁迫下，盐度20、25、35、40组的稚贝血淋巴渗透压均在48 h内显著降低或波动升高后趋于稳定，盐度15组则需96 h完成波动调整。以日变幅5渐变至高盐40过程中，稚贝血淋巴渗透压在48 h内趋于稳定；低盐15组仅需72 h完成渗透压调节，调整时间显著小于突变组。盐度突降胁迫下，各处理组稚贝鳃Na＋/K＋-ATP酶活力12 h后显著升高，24 h分别达到最大值，随后快速回落并稳定在高于对照组水平；盐度骤升胁迫下，鳃ATP酶活力波动降低，在12~24 h达到最小值后稳定在低于对照组水平。低盐（15）和高盐（40）渐变组的鳃ATP酶活力变幅均小于突变组。盐度胁迫下鳃Na＋/K＋-ATP酶活力的响应方式不同，即低盐胁迫时活力增强，高盐胁迫时活力降低。采用盐度渐变的驯化处理更有利于魁蚶稚贝应对盐度胁迫。
문장연구료염도협박하괴감（ Anadara broughtonii）치패（각장25~35 mm）혈림파삼투압화새Na＋/K＋-ATP매활력적변화。결과현시，돌변협박하，염도20、25、35、40조적치패혈림파삼투압균재48 h내현저강저혹파동승고후추우은정，염도15조칙수96 h완성파동조정。이일변폭5점변지고염40과정중，치패혈림파삼투압재48 h내추우은정；저염15조부수72 h완성삼투압조절，조정시간현저소우돌변조。염도돌강협박하，각처리조치패새Na＋/K＋-ATP매활력12 h후현저승고，24 h분별체도최대치，수후쾌속회락병은정재고우대조조수평；염도취승협박하，새ATP매활력파동강저，재12~24 h체도최소치후은정재저우대조조수평。저염（15）화고염（40）점변조적새ATP매활력변폭균소우돌변조。염도협박하새Na＋/K＋-ATP매활력적향응방식불동，즉저염협박시활력증강，고염협박시활력강저。채용염도점변적순화처리경유리우괴감치패응대염도협박。
The study investigated the variations of hemolymph osmolality and gill Na+/K+-ATPase activity in juvenile ark shell( Anada-ra broughtonii)( shell length 25~35 mm)under different salinity stresses. The results show that the hemolymph osmolality under ab-rupt stress at salinities of 20,25,35 and 40 decreased significantly or fluctuated ascendingly then became stable in 48 h. At salinity of 15,the juveniles needed 96 h to complete the adjustment. At a changing salinity rate of 5·d-1 ,the hemolymph osmolality at salini-ty of 40 tended to be stable in 48 h but in 72 h at salinity of 15,which was faster than at salinity of 15. After an abrupt decrease in sa-linity,the Na+/K+-ATPase activity of gills increased significantly in 12 h and each treatment reached its peak in 24 h. Then the activi-ty quickly dropped and returned to a steady state higher than the control,and with an abrupt increase of salinity,it fluctuated de-scendingly and reached the bottom in 12~24 h lower than the control. The activity changed much less at salinity of 15 and 40 than at sudden-change salinity. In conclusion,the response patterns of Na+/K+-ATPase activity of gills under different salinity stresses were different,i. e. ,the activity increased under low salinity stress but decreased under high salinity stress. It is suggested that gradual sa-linity change would be helpful for A. broughtonii to adapt to salinity stress.