| 引用本文: | 张涛,平洪领,史会来,付铁中,卢斌,何杰,李彬.不同盐度梯度和规格体重对横带髭鲷(Hapalogenys mucronatus)幼鱼耗氧率(RO)及排氨率(RN)的影响.海洋与湖沼,2023,54(2):566-572. |
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| 摘要: |
| 采用实验生态学方法研究了不同盐度梯度（10、15、20、25、30和35）和规格体重[S组（1.55±0.37） g，M组（3.92±0.74） g，L组（9.08±1.38） g]对横带髭鲷（Hapalogenys mucronatus）幼鱼耗氧率（RO）和排氨率（RN）的影响，以及氧氮比（O：N）对横带髭鲷幼鱼能源物质的分析。结果表明，当盐度恒定时，横带髭鲷幼鱼的耗氧率和排氨率均随体重（W）的增加而下降，体重与单位体重的耗氧率之间呈一元三次函数关系，体重与单位体重的排氨率之间呈幂函数关系；盐度和体重对横带髭鲷幼鱼的耗氧率、排氨率均有显著影响（P<0.05），但盐度和体重的交互作用对耗氧率、排氨率影响均不显著（P>0.05）。随着盐度的升高，三种规格横带髭鲷幼鱼耗氧率和排氨率均呈先升高后降低的趋势，耗氧率在盐度20时出现相对最大值，而排氨率则在盐度25时出现相对最大值。三种规格横带髭鲷幼鱼O：N值均随盐度的上升呈波动趋势，O：N值波动范围在5.035~7.533之间，其总平均值为5.916；同一规格不同盐度间O：N值差异不显著（P>0.05），而三种规格O：N平均值表现为S组（6.908）显著高于M组（5.426）和L组（5.414）（P<0.05），L组和M组差异不显著（P>0.05）。三种规格横带髭鲷幼鱼在盐度10~35时主要以蛋白质作为主要能源物质。 |
| 关键词: 横带髭鲷(Hapalogenys mucronatus) 盐度梯度 规格体重 耗氧率(RO) 排氨率(RN) |
| DOI：10.11693/hyhz20220700186 |
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| 基金项目:舟山市科技计划项目，2021C31012号，2022C31056号；浙江省“三农九方”科技协作计划项目，2022SNJF073号；国家重点研发计划“蓝色粮仓科技创新”重点专项，2020YFD0900804号，2019YFD0901205号，2019YFD0901204号；浙江省科技厅院所专项，HYS-CZ-004号，HYS-CZ-202208号。 |
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| INFLUENCE OF SALINITY AND BODY WEIGHT ON OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF JUVENILE HAPALOGENYS MUCRONATUS |
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ZHANG Tao, PING Hong-Ling, SHI Hui-Lai, FU Tie-Zhong, LU Bin, HE Jie, LI Bin
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Zhejiang Marine Fisheries Research Institute, Zhejiang Province Key Laboratory of Mariculture and Enhancement, Zhoushan 316021, China
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| Abstract: |
| The effects of salinity (10, 15, 20, 25, 30 and 35) and body weight[Group S (1.55±0.37) g, Group M (3.92±0.74) g, Group L (9.08±1.38) g] on oxygen consumption rate (RO) and ammonia excretion rate (RN) of juvenile Hapalogenys mucronatus were studied in experimental ecology method in laboratory. Results show that at a given salinity, RO and RN decreased with the increase of body weight (W). The relationship of RO and RNbetween body weight and per body weight could be represented by a regression equation. Salinity and body weight on RO and RN had significant effect (P<0.05), but the interaction between salinity and body weight had no significant effect on RO and RN (P>0.05). With the increase of salinity, RO and RN of all the three sizes showed a trend from increase to decrease, and RO showed a relative maximum at salinity 20, while RN appeared a relative maximum at salinity 25. The O/N value of the three sizes of juvenile H. mucronatus showed a fluctuating trend with the increase of salinity. The O/N value ranged from 5.035 to 7.533, on average of 5.916. There was no significant difference in the O/N value (P>0.05) of the same size in different salinities, while the average O/N value showed that the Group S (6.908) was significantly higher than those of the Group M (5.426) and the Group L (5.414) (P<0.05). There was no significant difference between Group M and L (P>0.05). The three sizes of juvenile H. mucronatus used mainly protein as energy when the salinity was 10~35. |
| Key words: Hapalogenys mucronatus different salinity weight sizes oxygen consumption rate ammonia excretion rate |
