摘要
在实验室条件下采用静水法测定了海水盐度(16、20、24、28、32、36、40、44)对紫血蛤(Sanguin-olaria violacea)耗氧率和排氨率的影响.紫血蛤按壳长分为大(50 mm以上)、中(40～50 mm)、小(小于40 mm)三种规格.结果显示,在盐度16～36范围内紫血蛤单位体重耗氧率和排氨率均随盐度升高显著增加(p<0.01),在盐度为36取得最大值,三种规格紫血蛤的耗氧率最大值分别为1.11、1.25和1.57 mg/(g.h),排氨率最大值分别为62.34、83.89和104.68μg/(g.h);其后随盐度上升,耗氧率和排氨率显著降低,表明在一定范围内,紫血蛤可通过调整生理代谢水平适应低盐或高盐环境.养殖驯化7 d后的累计死亡率以盐度44组为最高(55%),表明44可能是紫血蛤的耐盐上限.在盐度16～36范围内,紫血蛤单位体重耗氧率、排氨率和组织干重之间的关系可用幂函数表示.
The influence of different salinities （ 16,20,24,28,32,36,40 and 44） on the oxygen consumption rate and ammonia excretion rate of 3 groups （ L, M, S） of clam San,guinolaria violacea （ in size of over 50 mm, 40 - 50 mm and less than 40 mm by mean shell length） was studied under static conditions in the lab. It showed that the oxygen consumption rates of L, M and S groups were 1.11,1.25 and 1.57 rag/（ g · h） , and ammonia excretionrates were 62.34,83.89 and 104.68 μg/（ g · h） ,respectively. From salinity 16 to 36 both oxygen consumption rate and ammonia exeretion rate inereased signifieantly with the increasing salinity （p 〈 0.01 ）, reaehed a maximum at salinity 36 and then decreased rapidly with increasing salinity. It suggested that S. violaeea can,within eertain salinity range, regulate physiologieal metabolism to cope with hyposaline or hyperhaline eonditions. During acclimation the highest eumulative mortality（55% ） was observed at salinity 44 ,which suggest salinity 44 may be the upper salinity limit for the survival of S. violaeea. Regression analysis showed that, under salinity from 16 to 36, the relation between oxygen consumption rate, ammonia exeretion rate and dry tissue weight can be fixed by power correlation function.
出处
《台湾海峡》
CAS
CSCD
2012年第1期89-94,共6页
Journal of Oceanography In Taiwan Strait
基金
中央级公益性科研院所基本科研业务费专项资金资助项目(2008M05)
关键词
海洋生物学
紫血蛤
盐度
规格
耗氧率
排氨率
marine biology
Sanguinolaria violacea
salinity
body size
oxygen consumption rate
ammonia excretion rate
