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Movement Patterns and Residence of Adult Winter Flounder within a Long Island Estuary

机译：长岛河口成年冬季比目鱼的运动方式和栖息地

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We implanted individually coded acoustic transmitters into 40 adult winter flounder Pseudopleuronectes americanus (mean total length = 320 mm; range = 240–423 mm) and monitored them by use of passive acoustic telemetry from September 2007 to April 2009 to classify spatial and temporal movement patterns and quantify residency in Shinnecock Bay, eastern Long Island, New York. Overall, 94,250 valid detections were received. Winter flounder remained inshore, and 89% of the total detections occurred between May and October when bottom water temperature exceeded 15°C. Residency in Shinnecock Bay was dependent on time of release and varied greatly from a few weeks to more than 6 months; total presence (number of days on which individual fish were detected within the bay) averaged 22.0 d (range = 1–132 d). Tracked winter flounder were classified as exhibiting three movement patterns: (1) inner bay movements (short term versus long term), (2) dispersal to offshore waters, and (3) connectivity to other inshore areas. The first two patterns were consistent with historical notions of spatially overlapping resident and migratory individuals, whereas fish that displayed the third pattern may have exhibited a larger home range. These results provide insight into winter flounder movements, residency, and stock structure in a coastal bay of Long Island and provide important information for management. The interaction of exploitation and divergent migration behaviors may be a factor contributing to the winter flounder's decline in Long Island bays; however, more work will be required to obtain a full understanding of the spatial behavior and stock structure of this species.
机译：我们将单独编码的声发射器植入40只成年冬季比目鱼美国假单肺ur（平均总长= 320 mm;范围= 240-423 mm），并通过使用被动声遥测技术从2007年9月至2009年4月对其进行监视，以对时空运动模式进行分类并量化在纽约长岛东部的Shinnecock湾的居留权。总共收到94,250次有效检测。冬季比目鱼仍留在近海，总检测量的89％发生在5月至10月底水温度超过15°C的时候。 Shinnecock湾的居住时间取决于释放的时间，从几周到六个月以上不等。总存在量（在海湾内检测到单条鱼的天数）平均为22.0 d（范围= 1–132 d）。追踪的冬季比目鱼被归类为表现出三种运动方式：（1）内湾运动（短期与长期），（2）扩散到近海，以及（3）与其他近海地区的连通性。前两种模式与居住和迁徙个体在空间上重叠的历史观念是一致的，而显示第三种模式的鱼则可能表现出较大的栖息地范围。这些结果提供了对长岛沿海海湾冬季比目鱼运动，居住和种群结构的深入了解，并为管理提供了重要信息。剥削和不同迁徙行为的相互作用可能是导致长岛海湾冬比目鱼下降的一个因素。然而，将需要更多的工作来全面了解该物种的空间行为和种群结构。

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