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首页> 美国卫生研究院文献>PLoS Clinical Trials >Spatial Segregation within the Spawning Migration of North Eastern Atlantic Mackerel (Scomber scombrus) as Indicated by Juvenile Growth Patterns
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Spatial Segregation within the Spawning Migration of North Eastern Atlantic Mackerel (Scomber scombrus) as Indicated by Juvenile Growth Patterns

机译：少年生长模式表明东北大西洋鲭鱼（Scomber scombrus）产卵移徙内的空间隔离

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A comparison of growth data (fish length) with latitude shows that southern juvenile mackerel attain a greater length than those originating from further north before growth ceases during their first winter. A similar significant relationship was found between the growth in the first year (derived from the otolith inner winter ring) and latitude for adult mackerel spawning between 44°N (Bay of Biscay) and 54°N (west of Ireland). These observations are consistent with spatial segregation of the spawning migration; the further north that the fish were hatched, the further north they will tend to spawn. No such relationship was found in mackerel spawning at more northerly latitudes, possibly as a consequence of increased spatial mixing in a more energetic regime with stronger currents. This study provides previously lacking support for spawning segregation behaviour among North East Atlantic mackerel – an important step towards understanding the migratory behaviour of mackerel and hence the spatiotemporal distribution dynamics around spawning time.
机译：将生长数据（鱼长）与纬度进行比较后发现，南部鲭鱼的长度要比来自更北端的鲭鱼长得多，然后才在第一个冬季停止生长。在第一年的生长（取自耳石内部的冬季环）与成年鲭鱼产卵纬度在北纬44°（北比斯开湾）和北纬54°（爱尔兰西部）之间发现了相似的显着关系。这些观察结果与产卵移徙的空间隔离是一致的。鱼越往北孵化，它们越趋向于产卵。在北纬更高的鲭鱼产卵中未发现这种关系，这可能是由于在充满活力的海流中，海流越强，空间混合增加了。这项研究为东北大西洋鲭鱼之间的产卵隔离行为提供了以前缺乏的支持，这是了解鲭鱼迁移行为的重要一步，因此了解了产卵时间周围的时空分布动态。

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