温度对海燕摄食、呼吸和消化的影响

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中图分类号：S968.3 文献标志码：A 文章编号：1004—6755（2025）06-0005—08

DOI：10.3969/j.issn.1004-6755.2025.06.001

Effects of temperature on feeding，respiration and digestion of Asterina pectinifera

ZHANG Weijial，WANG Shimeng1，TIAN Tao1 2， 3， YU Xiaoming1， 2，3， WU Zhongxin1，2，3，LI Qingxia1，2.3 （1.Liaoning Marine Ranch Enginering Technology Research Center，DalianOcean University，Dalianl16023，China; 2.Marine Ranch Industry Research Institute，Dalian Ocean University，Dalian 116O23，China； 3.Key Laboratory of Education Department for Facilities Fisheries，Dalian 116O23，China）

Abstract： To investigate the efects of temperature on the feeding，digestion，and respiratory physiology of the starfish Asterina pectinifera ，this study conducted controlled laboratory experiments using three size groups （small： 3～4cm ；medium： 4～5cm ;large： 5～6 cm in diameter）under three temperature gradients （ 15°C ， ，and 25°C ）.Key physiological parameters，including food intake， feeding rate，oxygen consumption rate，and digestive enzyme activity，were measured. Results showed that：No mortality was observed in any temperature group；At 20°C ，all size groups exhibited significantly higher food intake compared to 15∘C and 10∘C groups （ P<0.05 ），with a distinct diurnal feeding rhythm（daytime feeding rates were significantly lower than nighttime rates）；The 25°C group showed significantly elevated oxygen consumption rates （ P<0. 05 ），while within each temperature group，larger individuals progressively decreased their oxygen demand; No significant temperature一 dependent effects were detected in digestive enzyme activity P>0.05） . These findings indicate that 15～20∘C represents the optimal temperature range for A . pectinifera feeding. For seabed-cultivated areas，enhanced management strategies to remove this species are recommended to mitigate poten tial ecological risks.

Key words：Asterina pectinifera；temperature; feeding ；breathing ;digestion

全球气候变化引发海水温度升高，对生物的多样性、生存与繁殖以及生态系统功能造成不同程度的影响。（剩余11893字）