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首页> 外文期刊>ICES Journal of Marine Science >Feels like home: homing of mature large-bodied fish following translocation from a power-station canal
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Feels like home: homing of mature large-bodied fish following translocation from a power-station canal

机译：感觉像家一样：从发电站运河转移后，归巢成年的大鱼

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摘要

Fish translocation is a common method of conservation and fisheries enhancement. Monitoring post-translocation movements and migration provides useful information to inform translocation strategies. Three species of large-bodied fish (Yellowfin Bream Acanthopagrus australis, Luderick Girella tricuspidata, and Tarwhine Rhabdosargus sarba) impounded in a cooling water canal at a power station were translocated into the adjacent estuary (Lake Macquarie, New South Wales). Translocated fish were tagged with acoustic tags ( equipped with accelerometer sensors (providing a relative measure of fish activity) and released on either an artificial reef or a natural reef. In addition, 8 freeranging Yellowfin Bream were captured and tagged on the artificial reef. Fish were tracked throughout Lake Macquarie on a dispersed array of 18 VemcoVR2W receivers, and on the artificial reef using a VR4-UWM Vemco Positioning System, for up to 11 months. Yellowfin Bream and Luderick rapidly migrated back to the power station, whereas Tarwhine remained near the release location. Translocated Yellowfin Bream showed divergent behavioural patterns to free-ranging Yellowfin Bream on the artificial reef, with much higher activity levels, elevated nocturnal activity, and different patterns of habitat usage, possibly reflecting divergent foraging behaviour. This study presents a rare example of non-natal homing to an artificial habitat in several large-bodied marine fish species. The role of low frequency sound in the homing of translocated fish, and factors contributing to the observed behavioural patterns are discussed. The presence of a homing signal which can facilitate return migration may decrease the efficacy of translocation efforts for adult marine fishes; however, these responses are speciesspecific and will require evaluation on a case-by-case basis.
机译：鱼类易位是保护和增加渔业的一种常用方法。监视易位后的移动和迁移提供有用的信息，以为易位策略提供信息。三种大体鱼（黄鳍BreAcanthopagrus australis，Luderick Girella tricuspidata和Tarwhine Rhabdosargus sarba）被困在一个发电站的冷却水渠中，并被转移到相邻的河口（新南威尔士州麦克夸里湖）。将易位的鱼贴上声学标签（配备加速度传感器（提供鱼活动的相对量度）），然后放到人工鱼礁或天然鱼礁上，另外捕获8个散养的黄鳍金枪鱼，并在人工鱼礁上加上标签。在分散的18台VemcoVR2W接收器阵列和使用VR4-UWM Vemco定位系统的人工鱼礁上追踪麦格里湖长达11个月，黄鳍Bre鱼和卢德里克迅速迁移回电站，而塔尔恩仍在附近易位的黄鳍Bre在人工礁上表现出与自由放养的黄鳍showed不同的行为模式，活动水平高得多，夜间活动增加，栖息地使用方式也不同，可能反映了不同的觅食行为。非成年归巢到几种大型海洋鱼类的人工栖息地的例子讨论了低频声音在易位鱼归巢中的作用，以及有助于观察到的行为模式的因素。可能有助于返回迁移的归巢信号可能会降低成年海鱼易位工作的效力；但是，这些响应是特定于物种的，需要根据具体情况进行评估。

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