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首页> 外文期刊>ICES Journal of Marine Science >Growth rates in a European eel Anguilla anguilla (L., 1758) population show a complex relationship with temperature over a seven-decade otolith biochronology
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Growth rates in a European eel Anguilla anguilla (L., 1758) population show a complex relationship with temperature over a seven-decade otolith biochronology

机译：欧洲EEL Anguilla Anguilla（L.，1758）人群的增长率显示出与七十年右侧欧特尔生物学的温度复杂的关系

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摘要

Environmental and habitat change can have profound and complex impacts on fish. We examined an unexploited population of Europeaneel (Anguilla anguilla) from a West of Ireland catchment. The population is long-lived and slow-growing compared to many other Europeaneel populations. Von Bertalanffy growth curves showed decadal changes, with a trend towards larger K, and t_0 values in both males andfemales and a smaller L_∞ in females. A growth biochronology spanning seven decades (1950s–2010s) was constructed using otolith annual incrementmeasurements. We found evidence of high variability in growth over the course of the time series. A decrease in growth occurred afterthe early 2000s, potentially driven by habitat and climatic changes. Growth was negatively correlated with early spring and wintertemperatures, providing strong evidence that the length of the growing season impacts eel growth. Growth was also positively correlatedwith summer temperatures and the number of days that exceeded 16°C (GSL16°C). The response to temperature was age-dependent; at ageone the positive relationship with GSL16°C was most pronounced and the negative relationship with winter temperatures was not evident.This study demonstrates the impact of climate change and highlights the complexities of eel growth strategies in a changing environment.
机译：环境和栖息地改变可能对鱼类产生深远和复杂的影响。我们审查了一个未开发的欧洲人口来自爱尔兰西部的鳗鱼（安圭拉安圭拉）。与许多其他欧洲相比，人口长期以来缓慢增长鳗鱼种群。 Von Bertalanffy Growth Curves显示了Decadal的变化，具有较大的K，呈趋势，以及男性和男性的T_0值女性和较小的女性较小的L_‖。跨越七十年（2010年至2010年）的生长生物学是使用欧特里斯年增量构建的测量。我们发现在时间序列过程中增长的高度变化的证据。发生的增长减少2000年代初，可能受到栖息地和气候变化的推动。生长与早春和冬季呈负相关温度，提供了强有力的证据表明，生长季节的长度会影响鳗鱼生长。增长也积极相关夏季温度和超过16°C（GSL16°C）的天数。对温度的响应是依赖的年龄;年龄与GSL16°C的正面关系最明显，与冬季温度的负面关系并不明显。本研究表明了气候变化的影响，并突出了鳗鱼生长策略在不断变化的环境中的复杂性。

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