水生生物学报2016，Vol.40Issue(6)：1187-1193,7.DOI:10.7541/2016.154
鲢幼鱼在不同水流速度下的暴发-滑行行为策略
STRATEGIES OF BURST-COAST SWIMMING BEHAVIOR OF JUVENILE SILVER CARP AT DIFFERENT FLOW VELOCITIES
摘要
Abstract
At the water temperature of (18±1)°C, the current study investigated the strategies of burst-coast swimming behavior of juvenile Silver carpsHypophthalmichthys molitrix (at full length of 11.70±0.57 cm) such as swimming du-ration, percentage of turned-around, burst time, distance and speed in the burst-coast performance at different flow ve-locities (16.5, 22.0, 27.5, 33.0, 38.5, 44.0, 49.5 and 55.0 cm/s). Results showed that the average swimming duration of silver carps first decreased and then increased with the increasing flow velocity. The shortest duration time is 118.6min when fish swim at 33.0 cm/s. The maximum duration of swimming in each group was more than 200min. The percen-tage of turned-around quickly decreased with the increasing flow velocity, while no turned-around behavior occurred at the flow velocity≥44.0 cm/s. The average burst time of burst-coast swimming of silver carp were positively associa-ted with flow velocity (y=0.03x+2.64,R2=0.92,P<0.05). Average burst distances relative to the ground for each group were at the range of 30—45 cm without significant difference (P>0.05). However, the average absolute burst distances increased significantly with the increase of flow velocity (y=4.98x–5.63,R2=0.98,P<0.001). The average mean burst velocities relative to the ground and average maximum burst velocities relative to the ground had no significant diffe-rence (P>0.05), which were at the range of 9—12 cm/s and 12—16 cm/s, respectively. There was a positive linear rela-tionship between average absolute burst velocity and flow velocity (absolute average mean burst speed:y=0.98x+10.74, R2=1.00,P<0.001. The absolute average maximum burst speed formulated byy=1.02x+13.75,R2=0.99,P<0.001). These data proved that silver carp took different burst-coast behavior strategies at different flow velocities.关键词
鲢/水流速度障碍/持续游泳时间/行为策略/暴发-滑行Key words
Silver carp/Velocity barrier/Swimming duration/Behavior strategy/Burst-coast分类
生物科学引用本文复制引用
梁园园,林晨宇,陈廷,张秋生,刘国勇,刘德富,高柱,石小涛..鲢幼鱼在不同水流速度下的暴发-滑行行为策略[J].水生生物学报,2016,40(6):1187-1193,7.基金项目
国家自然科学基金(51579136) （51579136）
国家科技支撑计划项目(2012BAC06B01) （2012BAC06B01）
三峡库区生态环境教育部工程研究中心开放基金(2015KF-03)资助[Supported by the National Natural Science Foundation of China (51579136) （2015KF-03）
the National Science and Technology Support Project of China (2012BAC06B01) （2012BAC06B01）
Open Fund of Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education (2015KF-03) （2015KF-03）
