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引用本文:周建聪,顾志峰,叶丙聪,刘闯,羊玉梅,刘春胜,王爱民,石耀华.盐度和氨氮对方斑东风螺存活和能量收支的影响[J].海洋科学,2022,46(10):104-112.
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盐度和氨氮对方斑东风螺存活和能量收支的影响
周建聪1, 顾志峰1,2, 叶丙聪1, 刘闯1, 羊玉梅1, 刘春胜1,2, 王爱民1,2, 石耀华1
1.海南大学海洋学院, 海南 海口 507228;2.海南大学 南海海洋资源利用国家重点实验室, 海南 海口 507228
摘要:
为了探究盐度和氨氮对方斑东风螺生理代谢的影响,本文采用实验生态学方法,研究了不同盐度和氨氮浓度条件下方斑东风螺(Babylonia areolata)的存活以及能量收支变化。结果显示,方斑东风螺的存活率随着盐度上升呈现先上升后下降的趋势,当盐度为25和30时,方斑东风螺的存活率为100%,低盐96hLC50为10.14,高盐为44.36;方斑东风螺存活率随氨氮浓度上升逐渐下降,当氨氮质量浓度为0~20mg/L时,存活率均为100%;氨氮96hLC50为253.83mg/L。盐度和氨氮对方斑东风螺的摄食率、排粪率、耗氧率和排氨率均具有显著影响(P<0.05)。盐度实验中,方斑东风螺的摄食率、排粪率和排氨率在盐度30时达到最大值,分别为20.50、8.62和0.07mg/(g·h),耗氧率在盐度35时达到最大值,为1.84mg/(g·h)。氨氮实验中,摄食率和排粪率在10mg/L时达到最大值,分别为23.58和10.42mg/(g·h),耗氧率和排氨率在20mg/L时达到最大值,分别为2.49和0.13mg/(g·h)。通过能量收支方程发现,随着盐度和氨氮浓度的上升,方斑东风螺生长能占比均呈现先上升后下降的趋势,其在盐度30和氨氮浓度5mg/L时达到最大值。本研究首次从能量收支角度出发,探讨了盐度和氨氮对方斑东风螺生理代谢的影响,可为其工厂化养殖提供参考。
关键词:  方斑东风螺(Babylonia areolata)  盐度  氨氮  存活率  能量收支
DOI:10.11759/hykx20210907002
分类号:
基金项目:国家重点研发计划项目(2018YFD0900704);院士团队创新中心项目(HD-YSZX-202011)
Effects of salinity and ammonia nitrogen on the survival and energy budget of ivory shell Babylonia areolate
ZHOU Jian-cong1, GU Zhi-feng1,2, YE Bing-cong1, LIU Chuang1, YANG Yu-mei1, LIU Chun-sheng1,2, WANG Ai-min1,2, SHI Yao-hua1
1.Ocean College, Hainan University, Haikou 507228, China;2.State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 507228, China
Abstract:
In order to explore the effects of salinity and ammonia nitrogen levels on its physiological metabolism, the influence of varying salinity and ammonia nitrogen levels on the survival rate and energy budget of Babylonia areolata was studied by experimental ecological methods. Results demonstrated that the survival rate of B. areolata initially augmented and then declined with the increase of salinity. When B. areolata were reared in the seawater with a salinity of 25 and 30, the survival rates reached 100%, and the low and high-salt 96 h LC50accumulation reached 10.14 and 44.36, respectively. When the ammonia nitrogen concentration was between 0 and 20mg/L, the survival rate of B. areolata attained 100% and then declined with an increase in the ammonia nitrogen concentration. The 96 h LC50 of ammonia nitrogen also reached 253.83mg/L. Salinity and ammonia nitrogen also had a substantial influence on the ingestion rate, feces production rate, oxygen consumption rate and ammonia excretion rate of snails (P <0.05). The feeding rate, feces production rate, and the ammonia exhalation rate of B. areolata also attained the utmost at the salinity of 30, measured at 20.50, 8.62 and 0.07 mg/(g·h), respectively. The oxygen consumption rate reached its maximum at a salinity of 35, measured at 1.84 mg/(g·h). Similarly, in the ammonia nitrogen experiment, the feeding rate, and feces production rate reached a maximum of 10 mg/L, measured at 23.58 and 10.42 mg/(g·h), respectively. The oxygen consumption rate and the ammonia excretion rate reached a maximum of 20 mg/L, measured at 2.49 and 0.13 mg/(g·h), respectively. According to the energy budget equation, the growth energy ratio of B. areolata elevated first and declined afterwards with augmented salinity and ammonia nitrogen concentration and reached a maximum at the salinity of 30 and the ammonia nitrogen concentration of 5 mg/L, respectively. In this study, from the perspective of energy budget, we studied the effects of salinity and ammonia nitrogen on the physiological metabolism of B. areolate for the first time, which could offer a useful reference for its factory farming.
Key words:  Babylonia areolata  salinity  ammonia nitrogen  survival rate  energy budget
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