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首页> 外文期刊>Journal of Applied Ichthyology >The recent population expansion of boarfish, Capros aper ( Linnaeus, 1758): interactions of climate, growth and recruitment
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The recent population expansion of boarfish, Capros aper ( Linnaeus, 1758): interactions of climate, growth and recruitment

机译：近期公猪（Capros aper）的种群扩张（林奈（Linnaeus），1758年）：气候，生长和募集的相互作用

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摘要

The objectives of this study were to evaluate whether temperature changes in the Northeast Atlantic influence the growth and recruitment dynamics of boarfish, Capros aper. Two geographically separate areas were examined, north' at the northern distribution range west of Ireland and south' on the main fishing grounds south of Ireland. No significant differences in length-at-age were observed between the two areas. Interannual otolith growth patterns were similar between the two areas with distinct years of faster and slower growth. In the north', no significant relationship between adult growth and temperature was observed, while growth in the south' was positively related to temperature up to approximately 16 degrees C growth rates were suppressed in the years with temperatures above that. Recruitment showed a positive correlation with adult growth the previous year for the Spanish recruitment index only, suggesting spatial connectivity between the Celtic Sea and the Bay of Biscay. The age distributions were similar in both areas and despite the boarfish's longevity of >30years, are dominated by the age classes corresponding to the years with high recruitment, suggesting that increased recruitment is responsible for the observed stock expansion.
机译：这项研究的目的是评估东北大西洋的温度变化是否影响公猪Capros aper的生长和募集动态。检查了两个地理上分开的区域，在爱尔兰以西的北部分布范围以北，在爱尔兰以南的主要渔场以南。在这两个区域之间未观察到年龄长的显着差异。这两个地区的年耳耳石生长模式相似，不同年份的生长快慢不同。在北部，没有观察到成年生长与温度之间的显着关系，而在南部，生长则与温度成正相关，直到温度升高到大约16摄氏度以下，这些年份的生长速度受到抑制。仅西班牙招聘指数的招聘人数与前一年的成年增长呈正相关，表明凯尔特海和比斯开湾之间的空间连通性。这两个地区的年龄分布都相似，尽管公猪的寿命超过30年，但其年龄类别主要是与高招聘年份相对应的，这表明增加的招聘是观察到的种群增长的原因。

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