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首页> 外文期刊>ICES Journal of Marine Science >Mortality of sand whiting (Sillago ciliata) released by recreational anglers in an Australian estuary
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Mortality of sand whiting (Sillago ciliata) released by recreational anglers in an Australian estuary

机译：休闲垂钓者在澳大利亚河口释放的白（Sillago ciliata）死亡率

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摘要

The mortality of hooked-and-released sand whiting (Sillago ciliata) and the key contributing factors were determined during a recreational fishing event in northern New South Wales, Australia. Participating anglers caught 124 sand whiting, of which 60 were tagged with plastic t-bar anchor tags, and then released into replicate sea cages. In all, 109 sand whiting were seined (54 were tagged) and similarly released into replicate sea cages for use as controls. All fish were monitored for mortalities over 7 days. There were no measurable effects of confinement in the sea cages on the stress (measured as concentrations of plasma glucose) of hooked or seined fish. Ten hooked-and-released (four non-tagged, six tagged) and two control (both tagged) sand whiting died during the monitoring period and mostly within 48 h of capture, providing adjusted mortality rates (i.e. accounting for mortalities of control fish) of approximately 6% for total, tagged, and non-tagged fish. Anatomical hook location (oesophagus-ingested hooks) and bait type (beach worms, Australonuphis teres) were significant predictors of mortality (p > 0.05). The results support current recreational fishing gears and practices for the catch and release of sand whiting.
机译：在澳大利亚新南威尔士州北部的一次休闲垂钓活动中，确定了钩捕和放出的白（Sillago ciliata）的死亡率和关键影响因素。参与的钓鱼者捕获了124个沙尘，其中60个被塑料T型锚标签标记，然后被释放到复制的海笼中。总共缉捕了109条沙鱼（标记了54条），并类似地释放到复制的海笼中，用作对照。在7天内监测所有鱼类的死亡率。在网箱中，封闭对钩状或围网鱼的应力（以血浆葡萄糖浓度衡量）没有可测量的影响。在监测期间，且在捕获的48小时内，有十只钩钩和释放（四只未标记，六只标记）和两粒对照（均标记）沙尘死亡，提供了适当的死亡率（即占对照鱼的死亡率）总计，带标签和不带标签的鱼大约占6％。解剖学钩的位置（食道钩）和诱饵类型（海滩蠕虫，澳洲龙）是死亡率的重要预测因子（p> 0.05）。研究结果支持了目前的休闲渔具和捕捞和释放沙尘的做法。

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