盐度对不同规格泥螺耗氧率和排氨率的影响

生态学杂志

盐度对不同规格泥螺耗氧率和排氨率的影响

吴文广^1,2,张继红^2**,方建光²,房景辉²,魏龑伟^1,2

（¹上海海洋大学，上海 201306； ^2农业部海洋渔业可持续发展重点实验室，中国水产科学研究院黄海水产研究所，山东青岛 266071)

出版日期:2013-09-10 发布日期:2013-09-10

Effects of salinity on oxygen consumption and ammonia excretion rate of different sizes of Bullacta exarata. 

WU Wen-guang^1,2, ZHANG Ji-hong^2**, FANG Jian-guang², FANG Jing-hui², WEI Yan-wei^1,2

(¹Shanghai Ocean University, Shanghai 201306, China; ²Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, Shangdong, China)

Online:2013-09-10 Published:2013-09-10

摘要/Abstract

摘要：

于2012年7月采用静水法测定了盐度（18、23、28、33、38）对莱州湾3种规格泥螺（Bullacta exarata）耗氧率和排氨率的影响。结果表明：盐度、规格以及二者交互作用均对泥螺的耗氧率和排氨率有显著影响（P<0.05）;盐度在18～28时，耗氧率及排氨率随着盐度的增加而增大，盐度为28时达峰值，之后，随着盐度的增加而降低；泥螺的软体部干重与单位体重耗氧率及排氨率之间均符合幂函数关系；泥螺的氧氮比值范围为8.38～29.16，在盐度为33时，各实验组均有最大的氧氮比值；根据泥螺的密度计算得出，泥螺分布区氨氮的产生量达66.53 mg N·hm^-2·d^-1，可能会对同一生态位的生物及莱州湾氮循环产生影响。

Abstract: In July, 2012, a measurement was made on the oxygen consumption rate and ammonia excretion rate of three body sizes of Bullacta exarata in the Laizhou Bay of East China under effects of salinity 18, 23, 28, 33, and 38. The results showed that salinity, body size, and their interaction had significant effects on the oxygen consumption rate (OR) and ammonia excretion rate (NR) (P<0.05). Within the range of the salinity 18-28, the OR and NR increased with salinity, and peaked at salinity 28. With the further increase of the salinity, both the OR and NR decreased. The relationships between the OR and NR and the dry weight of soft-tissue could be expressed as exponential equation. The O/N mole ratio varied from 8.38 to 29.16, and reached the maximum at salinity 33. According to the calculation of individual biomass and ammonia excretion rate, the ammonia production from the B. exarata in the Bay was estimated as about 66.53 mg N·hm^-2·d^-1, which could affect the organisms of the same ecological niche and the N-cycle in the Laizhou Bay.

吴文广1,2,张继红2**,方建光2,房景辉2,魏龑伟1,2. 盐度对不同规格泥螺耗氧率和排氨率的影响[J]. 生态学杂志.

WU Wen-guang1,2, ZHANG Ji-hong2**, FANG Jian-guang2, FANG Jing-hui2, WEI Yan-wei1,2. Effects of salinity on oxygen consumption and ammonia excretion rate of different sizes of Bullacta exarata. [J]. cje.