黄颡鱼瞬时耗氧率与窒息点的研究  

Instantaneous Oxygen Consumption Rate and Suffocation Point of Pelteobagrus fulvidraco

作　　者：杨凯 樊启学[2] 张磊[2] 杨磊[2] 周华[2] 李波 方巍[2] 

机构地区：[1]武汉市水产科学研究所,湖北武汉430207 [2]华中农业大学水产学院,农业部淡水生物多样性保护与利用重点开放实验室,湖北武汉430070

出　　处：《水生态学杂志》2012年第2期127-131,共5页Journal of Hydroecology

基　　金：国家科技支撑计划项目(No.2007BAD37B02);湖北省"十一五"重大科技攻关项目(No.2006AA203A01)

摘　　要：在水温(28.0±0.5)℃下,用封闭静水式装置测定了体长1.90～11.03 cm、体重0.17～22.99 g黄颡鱼(Pel-teobagrus fulvidraco)的瞬时耗氧率和窒息点。结果表明,黄颡鱼窒息点(Sp)为0.33～0.60 mg/L,瞬时耗氧率(IRO2)为0.0119～0.2081 mg/g.h。Sp和IRO2随规格的增加而降低,黄颡鱼窒息点(Sp)与体长(L)、体重(W)的关系式分别为:Sp=0.7795L-0.3695(R2=0.9619)、Sp=0.4897W-0.1323(R2=0.9656);瞬时耗氧率(IRO2)与体长(L)、体重(W)的回归方程为:IRO2=0.7290L-0.5709(R2=0.9580)、IRO2=0.3549W-0.2036(R2=0.9539);IRO2随水中溶解氧(DO)的下降而下降,二者之间存在明显的线性关系。黄颡鱼属低窒息点鱼类,其呼吸类型可归属于顺应型。In this experiment, size related instantaneous oxygen consumption rate （IRO2 ） and suffocation point （Sp） of yellow catfish with body length of 1.90 -11.03 cm and body weight of 0.17 -22.99 g were investigated by means of sealed-still water at （28.0 ± 0.5） ℃. The results showed that the range of Sp and IRO2 was 0.33 - 0.60 mg/L and 0. 0119 -0. 2081 mg/g · h. respectively, Both Sp and IRO2 of yellow catfish decreased with size increasing, and the power function between Sp and size, and IRO2 and size can be described as Sp=0.7795L-0.3695 （R2=0.9619）, Sp = 0.4897W-^0.1323 （R2=0.9656） and IRO2 = 0.7290L-^0.5709 （R2 =0. 9580）, IRO2 = 0. 3549W-0.2036（R2 =0.9539）, respectively. IRO2 of yellow catfish decreased with de- creasing dissolved oxygen （DO） and there was a linear correlations between IRO2 and DO. This study suggests that yellow catfish has low suffocation point and its breath relegates to compliant style.

关 键 词：黄颡鱼 瞬时耗氧率 窒息点 

分 类 号：Q175[生物学—水生生物学]