| 摘要: |
| 运用一种无损伤性的生物心跳参数红外监测方法，记录分析了96只缢蛏个体在22-38℃温度变化范围内波形特征和心率数据，依据阿伦尼乌斯方程直线拟合求得每个个体心率的阿伦尼乌斯拐点温度（Arrhenius break temperatures，ABT）指标，并进一步分析了缢蛏心率ABT与其生长性状的相关关系。结果表明：缢蛏心跳在温度上升过程中不断变化，22-34℃范围内可采集获得心脏搏动的稳定波形，且心跳速度在前期呈现随温度的上升而加快，到后期随温度上升而减弱，平均心率31℃达峰值为33.65 BMP，同时缢蛏个体之间的心率差异明显，22℃时个体间差异最大，范围在13.90-27.95 BMP，平均心率为19.66 BMP，变异系数达14.06%，26-31℃时个体间的差异相对较小，但变异系数也均在8.5%以上；缢蛏所有个体中心率ABT最小值为29.74℃，最大值31.86，平均值为31.02℃。建立了缢蛏心率ABT受生长性状影响的最优回归方程。壳宽对缢蛏心率ABT的直接负作用最强，直接通径系数为-0.689 5，而壳长对心率ABT直接通径系数尽管只有为0.395 9，但它还通过壳高、壳宽间接发挥作用（间接通径系数分别为0.221 8，-0.194 1），因而总的影响最大（相关系数为0.423 6）。 |
| 关键词: 缢蛏(Sinonovacula constricta) 心率ABT 生长性状 逐步回归 通径分析 |
| DOI：10.11693/hyhz20210200039 |
| 分类号:Q955;Q789;S968.3 |
| 基金项目:财政部和农业农村部：国家现代农业产业技术体系资助，CARS-49号；宁波市“科技创新2025”重大专项，2019B10005号；浙江省属高校基本科研业务费专项资金资助，SC1032080180480号；国家海洋水产种质资源库项目。 |
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| CORRELATION AND REGRESSION ANALYSIS BETWEEN THE ARRHENIUS BREAK TEMPERATURES (ABT) OF HEART RATE AND GROWTH TRAITS OF SINONOVACULA CONSTRICTA |
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HU Ling-Wei1,2, SUN Chang-Sen2,3, DONG Ying-Hui1,2, LIN Zhi-Hua2,3
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1.Zhejiang Wanli University, College of Biological & Environmental Sciences, Ningbo 315100, China;2.Zhejiang Key Laboratory of Aquatic Germplasm Resources, Zhejiang Wanli University, Ningbo 315100, China;3.Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai 315604, China
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| Abstract: |
| In this study, by intact infrared monitoring of the biological heartbeat parameters, the waveform characteristics and heart rate data of 96 individuals of bivalve Sinonovacula constricta were recorded and analyzed in a temperature range of 22-38℃. According to the Arrhenius equation, the Arrhenius break temperatures (ABT) of each individual heart rate were obtained by linear fitting, and the relationship between heart rate ABT and growth traits was revealed. Results show that the heart rate of S. constricta constantly changed during temperature rising, and the stable waveform of heart beat occurred in the range of 22-34℃. The heart rate increased with the temperature rising in the early stage, and decreased with the temperature rising in the late stage. The average heart rate reached the peak value of 33.66 BMP at 31℃. In addition, the differences of heart rate among individuals were obvious, and the most significant differences were found at 22℃ (ranged from 13.90 to 27.95 BMP); the coefficient of variation was up to 14.06%. The differences among individuals were relatively small at 26-31℃, but the coefficients of variation were all more than 8.5%. The minimum ABT value was 29.74℃, the maximum was 31.86 among all individuals, and the average value was 31.02℃. The multiple regression equation between ABT with growth traits in S. constricta was built. The direct path coefficient of shell width on heart rate ABT was -0.689 5, while that of shell length was only 0.395 9; although it was small, it plays an indirect role via shell height and shell width (with the indirect path coefficients of 0.221 8 and -0.194 1, respectively), thus the total effect was the most significant (with the correlation coefficient of 0.423 6). |
| Key words: Sinonovacula constricta heart rate ABT growth traits stepwise regression path analysis |
