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首页> 外文期刊>ICES Journal of Marine Science >Geographic and environmental drivers of fecundity in the European lobster (Homarus gammarus)
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Geographic and environmental drivers of fecundity in the European lobster (Homarus gammarus)

机译：地理和环境因素在欧洲龙虾中繁殖繁殖力（Homarus gammarus）

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摘要

Fecundity in the European lobster (Homarus gammarus) has been shown to exhibit extensive spatial variation across northern Europe. Previously, this has been attributed to a lack of methodological standardization among samples. Instead, we show significant correlations between fecundity and both geographical and environmental drivers. Weuse linear mixed-effect models to assess the contribution of latitude, longitude, and measures of sea surface temperatures on the size-fecundity relationships of 1058 ovigerous females from 11 locations in the UK, Ireland, and Norway. We include new data for 52 lobsters from Falmouth, UK, the southwest limit of existing samples. Fecundity at mean female size correlated positively with eastings and greater annual ranges in sea surface temperature, but not with mean temperature or latitude. This contradicts the established latitudinal and mean temperature dependence reported for the closely related H. americanus. We postulate that proximity to stable Atlantic currents is the most likely driver of the relationship between fecundity and longitude. Mechanisms are discussed by which egg production or retention may be influenced by temperature range rather than by mean temperature. With further validation, we propose that temperature-correlated fecundity predictions will provide a valuable tool in ensuring that management thresholds are appropriate for the reproductive characteristics of lobster populations.
机译：事实证明，欧洲龙虾的繁殖力在整个北欧表现出广泛的空间变化。以前，这归因于样品之间缺乏方法学标准化。相反，我们显示了繁殖力与地理和环境驱动因素之间的显着相关性。我们使用线性混合效应模型来评估纬度，经度和海表温度对英国，爱尔兰和挪威11个地区的1058雌雄同体大小与生殖力关系的贡献。我们包括来自英国法尔茅斯的52只龙虾的新数据，这是现有样品的西南极限。雌性平均大小下的生殖力与东面和较大的海表温度年际呈正相关，但与平均温度或纬度无关。这与密切相关的美洲嗜血杆菌报道的确定的纬度和平均温度依赖性相矛盾。我们假设接近稳定的大西洋洋流是产力与经度之间关系的最可能驱动因素。讨论了蛋的产生或保留可能受温度范围而不是平均温度影响的机制。通过进一步的验证，我们建议与温度相关的繁殖力预测将为确保管理阈值适合龙虾种群的繁殖特征提供有价值的工具。

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