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首页> 外文期刊>Journal of Fish Biology >Diversity in destinations, routes and timing of small adult and sub-adult striped bass Morone saxatilis on their southward autumn migration
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Diversity in destinations, routes and timing of small adult and sub-adult striped bass Morone saxatilis on their southward autumn migration

机译：小型成年和亚成年鲈鱼Morone saxatilis在南方秋季迁徙的目的地，路线和时间的多样性

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摘要

Almost three-quarters of the 46 young adult and sub-adult striped bass Morone saxatilis that were acoustically tagged in Plum Island Estuary, Massachusetts, U.S.A., in the summer of 2006 were detected in one or more southern coastal arrays during their autumn migration. On the basis of the trajectories along which these M. saxatilis moved from feeding to overwintering areas, three migratory groups emerged. After leaving Plum Island Estuary, about half of the fish were detected only in a mid-latitude array, Long Island Sound. The other half of the tagged fish were detected during autumn and winter in a more southern array, the Delaware Estuary. This latter group of fish may have used two routes. Some travelled to the Delaware Estuary through Long Island Sound while other fish may have taken a second, more direct, coastal route that did not include Long Island Sound. Consequently, a seemingly homogeneous group of fish tagged at the same time in the same non-natal feeding location exhibited a diversity of southward movement patterns that could affect population-level processes. These three groups that differed in overwintering location and migration route could be movement contingents with migratory connectivity.
机译：在2006年夏季在美国马萨诸塞州的梅花岛河口进行声学标记的46种成年和亚成年幼体低音鲈鱼Morone saxatilis中，有近四分之三是在秋季迁徙期间在一个或多个南部沿海地区发现的。根据这些虎耳草从进食区到越冬区的轨迹，出现了三个迁徙群体。离开梅花岛河口后，仅在中纬度阵列长岛湾中发现了大约一半的鱼。在秋季和冬季，在更南部的阵列特拉华河口发现了另一半带标签的鱼。后一组鱼可能使用了两条路线。一些鱼类通过长岛峡到达特拉华河口，而其他鱼类可能采取了第二条更直接的沿海路线，其中不包括长岛峡。因此，在相同的非出生喂养地点同时被标记的看似均一的鱼群表现出可能影响种群水平过程的多种向南运动方式。这三个在越冬地点和迁徙路线上有所不同的群体可能是具有迁移性的运动特遣队。

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