光照强度对大口黑鲈游泳协作能力的影响

DIFFERENT LIGHT INTENSITY ON SWIMMING COORDINATION ABILITY OF MICROPTERUS SALMOIDES

文章以大口黑鲈(Micropterus salmoides)为研究对象,研究了光照强度对大口黑鲈游泳能耗及游泳协作能力的影响,测定了4种不同光照强度(0、300—500、2200—2500和3300—3900 lx)对大口黑鲈鱼群的游泳能耗、相对距离、相对位置分布和攻击次数的影响。研究发现:(1)当光照增强时,由于强光刺激和攻击行为的加剧显著制约了鱼群游泳协作能力的表达;(2)在光强≤2200—2500 lx时,随着光照强度的增大,鱼群游泳能耗显著增加(P<0.05)。结果表明:光强的增大限制了鱼群游泳协作能力的表达,从而造成了个体不必要的游泳能耗。

Regulating the light environment in factory circulating aquaculture is a current research focus,but few studies have considered the perspective of fish swimming cooperation.In this paper,we aimed to investigate the effects of different light intensities on swimming energy consumption and swimming coordination ability of largemouth bass Micropterus salmoides.Specifically,four different light intensities(0,300—500,2200—2500 and 3300—3900 lx)were examined,focusing on swimming energy consumption,relative distance,relative position distribution and attack frequency of largemouth bass.The results found that:(1)Intensified light had a significant impact on the expression of swimming cooperation ability in fish,primarily due to the stimulation of strong light and aggressive behavior;(2)When the light intensity≤2200—2500 lx,increasing light intensity led to a significant increase in fish swimming energy consumption(P<0.05).The results showed that the increase of light intensity limited the expression of swimming cooperation ability of fish,which caused unnecessary swimming energy consumption of individuals.