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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Depth preference in released juvenile turbot Psetta maxima
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Depth preference in released juvenile turbot Psetta maxima

机译：释放出的幼年大菱P最大深度

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摘要

Hatchery-reared juvenile turbot Psetta maxima were tagged with Passive Integrated Transponder (PIT) tags and released at three different depths in a sandy bay in Denmark. About 2-7% of the released fish were registered daily to monitor their distribution using a tag antenna mounted on a modified beam trawl, thus avoiding actually sampling the fish. The change in distribution of the three groups was adequately represented by a two-dimensional movement model. Movement along the shore was described by a Brownian motion with group specific drift. Movement perpendicular to the shore line was described by a Cox-Ingersoll-Ross process with a group specific attraction point. All three groups exhibited similar depth preferences of 1.7 m. Immediately after the release, fish were concentrated around the release points but after one day, fish had moved to the preferred depth and subsequently maintained their position at this depth. Farmed turbot exhibited strong site fidelity and an innate behaviour for selecting a preferred depth.
机译：孵化场饲养的幼年大尾P Psetta maxima用被动集成应答器（PIT）标签标记，并在丹麦的一个沙湾中以三个不同深度释放。每天大约有2-7％的释放鱼被记录下来，以便使用安装在改良的拖网拖缆上的标签天线来监视其分布，从而避免实际对鱼进行采样。三个组的分布变化可以通过二维运动模型充分表示。沿岸运动是由布朗运动描述的，具有特定于组的漂移。垂直于海岸线的运动由具有特定组吸引力的Cox-Ingersoll-Ross过程描述。所有三个组都表现出相似的1.7 m深度偏好。释放后，立即将鱼集中在释放点附近，但一天后，鱼移至首选深度，随后将其位置保持在该深度。养殖的大菱t表现出强烈的场地保真度，并具有与生俱来的行为来选择首选深度。

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