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Size and stage-dependent vertical migration patterns in reef-associated fish larvae off the eastern coast of Australia

机译：澳大利亚东部海岸的珊瑚礁相关鱼类幼虫中的大小和阶段依赖的垂直迁移模式

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Larval fish have been shown to vertically migrate with ontogeny, a behaviour that influences their dispersal by exposing the larvae to currents with different velocities at different stages of development. Most studies have focused on studying the vertical migration of tropical reef fishes, that have been shown in general to migrate downwards with ontogeny. Here we investigated if similar ontogenetic vertical migration patterns also occur for seven families of temperate reef fish along the eastern coast of Australia, sampling at three depth ranges (0-1 m, 5-50 m, 51-100 m) across sixteen stations along the continental shelf, and eight within cold-core eddies. Larval fish were identified to the lowest taxonomic level possible, their standard length measured, and ontogenetic stage classified to preflexion, flexion or post-flexion. Generalised linear models were used to determine if the larval fish exhibited patterns of vertical migration with ontogeny and length. Four families (Labridae, Serranidae, Scorpaenidae, and Synodontidae) exhibited a downwards migration with ontogeny similar to vertical distribution patterns seen in tropical reef fish studies, Mullidae displayed different vertical migration patterns within eddies compared to coastal waters, and two families showed no ontogenetic vertical migration (Pomacentridae and Scaridae). For all families other than Scaridae, the larvae inside an eddy were longer suggesting larval retention. The vertical migration patterns observed, while varying among taxa, show that reef-associated larval fish off the eastern Australian coast do change their depth with ontogeny. The results of this study will be useful in parameterising connectivity modelling studies for these temperate reef-associated families.
机译：已经显示幼虫鱼与组织发生，这种行为是通过在不同发展阶段的不同速度下暴露幼虫来影响它们的分散的行为。大多数研究侧重于研究热带礁鱼的垂直迁移，这一般已被迁移以便向下迁移。在这里，我们调查了澳大利亚东部海岸的温带礁鱼的七个温带礁鱼的类似组织垂直迁移模式，在十六站的三个深度范围内取样（0-1米，5-50米，51-100米）大陆架，八个在冷核漩涡中。幼虫鱼被鉴定为可能的最低分类水平，其标准长度测量，并分类为前屈光度，屈曲或屈曲后的植入阶段。广义的线性模型用于确定幼虫鱼是否表现出垂直迁移的模式，具有组织化和长度。四个家庭（Labridae，Serranidae，Scorpaenidae和司法瘤）表现出与在热带礁鱼类研究中看到的垂直分布图案相似的心底发生器的向下迁移，与沿海水域相比，Mullidae在漩涡中展示了不同的垂直迁移模式，两个家庭没有显示无植物垂直迁移（Pomacentridae和Scaridae）。对于Scaridae以外的所有家庭，涡流内的幼虫更长的表明幼虫潴留。观察到的垂直迁移模式，同时在分类群中变化，表明东部澳大利亚海岸的珊瑚礁相关的幼虫鱼确实将他们的深度变化。该研究的结果将可用于这些温带珊瑚礁相关系列的连接性建模研究。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2203-2203|共1页
  • 作者

    S. Hawes; T. Miskiewicz; V. Garcia; W. Figueira;

  • 作者单位

    Coastal & Marine Ecosystems Group The University of Sydney Sydney NSW 2006 Australia;

    Coastal & Marine Ecosystems Group The University of Sydney Sydney NSW 2006 Australia;

    Coastal & Marine Ecosystems Group The University of Sydney Sydney NSW 2006 Australia;

    Coastal & Marine Ecosystems Group The University of Sydney Sydney NSW 2006 Australia;

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