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《Oceanologia et Limnologia Sinica》 2016-01
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APPLICATION OF DIGITAL ULTRASOUND IMAGING TO COMPARE THE CIRCULATION PHYSIOLOGY BETWEEN CHLAMYS FARRERI AND PATINOPECTEN YESSOENSIS

HAO Jie-Hua;XU Qiang;RU Shao-Guo;YANG Hong-Sheng;College of Marine Life Sciences, Ocean University of China;Key Laboratory of Marine Ecology and Environment Sciences, Institute of Oceanology, Chinese Academy of Sciences;  
We applied digital ultrasonic Doppler imaging to study circulatory physiology of two scallop species Chlamys farreri and Patinopecten yessoensis. First, we quantified several indices, including heart rate(HR), acceleration of blood flow(ABF), peak systolic velocity(PS), end-diastolic velocity(ED), maximum instantaneous blood flow(Max-IBF), minimum instantaneous blood flow(Min-IBF), resistive index(RI) and systolic and diastolic velocity ratio(S/D). Difference in these indices between the two species was compared, indicating that HR, ABF, PS, ED of both species showed a positive correlation with temperature. The thresholds of eight circulatory physiological indices between 10 and 25°C for C. farreri and P. yessoensis were as followed, respectively, HR 16—39, 14—31 beat/min; ABF 1.75—15.84, 0.99—7.41 cm/s2; PS 3.54—8.09, 2.32—8.85 cm/s; ED 1.51—3.15, 1.09—4.23 cm/s; Max-IBF 0.051—0.193, 0.137—0.316 m L/s; Min-IBF 0.025—0.072, 0.022—0.131 m L/s; RI 0.49—0.69, 0.42—0.54; and S/D 2.28—2.83, 1.75—2.12. At a same temperature, C. farreri showed greater values of HR, ABF, PS, and ED, but smaller Max-IBF, Min-IBF than P. yessoensis. The two species showed a fluctuation in RI and S/D within a certain range. Therefore, P. yessoensis has a more efficient circulatory function characterized by higher blood flow with relatively lower heart rate. In other words, P. yessoensis can meet the demand of blood circulation with less energy consumption of metabolism, which fits well with its adaptation to a cold-water environment.
【Fund】: 国家科技支撑计划项目 2011BAD13B02号;; 国家自然基金委员会-山东省人民政府联合资助海洋科学研究中心项目 U1406403号;; 中国科学院战略性先导科技专项 XDA11020704号
【CateGory Index】: S917.4
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