水温对刀鲚幼鱼耗氧率、窒息点、血糖及肌肝糖元指标的影响

生态学杂志

水温对刀鲚幼鱼耗氧率、窒息点、血糖及肌肝糖元指标的影响

徐钢春¹,聂志娟¹,薄其康²,徐跑¹,顾若波^1**

（¹中国水产科学研究院淡水渔业研究中心，农业部淡水渔业和种质资源利用重点实验室，江苏无锡 214081； ^2南京农业大学渔业学院，江苏无锡 214081）

出版日期:2012-12-10 发布日期:2012-12-10

Effects of water temperature on oxygen consumption rate, asphyxiant point, blood glucose content, and muscle and liver glycogen content of juvenile Coilia nasus.

XU Gang-chun¹, NIE Zhi-juan¹, BO Qi-kang², XU Pao¹, GU Ruo-bo^1**

(¹ Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangshu, China; ²Wuxi College of Fisheries, Nanjing Agriculture University, Wuxi 214081, Jiangshu, China)

Online:2012-12-10 Published:2012-12-10

摘要/Abstract

摘要： 实验测定了不同水温条件下刀鲚（Coilia nasus）幼鱼的耗氧率和窒息点，并对耗氧率的昼夜变化规律以及水温对刀鲚幼鱼血糖及肌肝糖元指标的影响进行了研究，旨在为刀鲚运输、养殖生产中制定合理的放养密度和养殖工艺提供参考依据。结果表明：在试验水温（16 ℃～28 ℃）条件下，刀鲚幼鱼的耗氧率随水温的升高而增大，耗氧率（R）与水温（T）的回归方程为R=0.988T²-32.36T＋343.7，相关系数为0.96；刀鲚幼鱼的耗氧率具有昼夜节律性，耗氧高峰出现在7:00，低谷在21:00；刀鲚幼鱼的窒息点与水温显著相关，窒息点A（mg·L^-1）与水温T（℃）的回归关系为A=0.9397T^0.8001，R²=0.98。刀鲚幼鱼血清中血糖含量在水温16 ℃～24 ℃阶段保持相对稳定，血糖含量在17.24～19.79 mmol·L^-1，肌肉和肝脏糖元含量均呈波浪式变动；但在水温24 ℃～28 ℃阶段，血糖含量随水温上升而显著升高，而肌肉和肝脏糖元含量均显著降低。

Abstract: In order to supply reference for the rational breeding and transportation of Coilia nasus, a laboratory experiment was conducted to measure the oxygen consumption rate (OCR) and asphyxiation point (AP) of juvenile C. nasus under different water temperature, and to study the diurnal variations of the OCR as well as the effects of water temperature on the blood glucose and muscle and liver glycogen of the juveniles. At water temperature (T, ℃) 16-28 ℃, the OCR (R, mg·L^-1) of the juveniles increased with increasing temperature, and there was a linear relationship between the R and T (R=0.988T²-32.36T＋343.7, R²=0.96). The OCR revealed a diurnal rhythm, with the peak at 7:00 am and the bottom at 9:00 pm. The AP (A, mg·L^-1) was significantly correlated to T (A=0.9397T^0.8001, R²=0.98). At water temperature 16-24 ℃, the blood glucose content of the juveniles kept relatively steady and ranged from 17.24 to 19.79 mmol·L^-1, while the muscle and liver glycogen content fluctuated. At water temperature 24-28 ℃, the blood glucose content increased significantly with increasing temperature, while the muscle and liver glycogen content had a significant decrease.

徐钢春1,聂志娟1,薄其康2,徐跑1,顾若波1**. 水温对刀鲚幼鱼耗氧率、窒息点、血糖及肌肝糖元指标的影响[J]. 生态学杂志.

XU Gang-chun1, NIE Zhi-juan1, BO Qi-kang2, XU Pao1, GU Ruo-bo1**. Effects of water temperature on oxygen consumption rate, asphyxiant point, blood glucose content, and muscle and liver glycogen content of juvenile Coilia nasus.[J]. cje.