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首页> 外文期刊>Environmental Biology of Fishes >Modifying mosquito impoundment management to enhance nursery habitat value for juvenile common Snook (Centropomus undecimalis) and Atlantic tarpon (Megalops atlanticus)
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Modifying mosquito impoundment management to enhance nursery habitat value for juvenile common Snook (Centropomus undecimalis) and Atlantic tarpon (Megalops atlanticus)

机译：修改蚊子蓄水管理，加强幼儿园栖息地价值（Centropomus Undecimalis）和大西洋蒲公（Megalops Atlanticus）

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Coastal wetlands function as nurseries for juveniles of many fishes, including common snook (Centropomus undecimalis) and Atlantic tarpon (Megalops atlanticus). Thousands of hectares of mangrove habitat in the Indian River Lagoon (IRL), Florida (USA) have been impounded for mosquito control, limiting connectivity and potentially decreasing nursery habitat value. Many impoundments are managed to provide connectivity through culverts to the IRL from October through April (non-breeding season for mosquitos), with the impoundments isolated and filled with water to control mosquito breeding from May through September. To determine whether seasonality of impoundment-estuary connectivity affected nursery habitat value, we conducted a quantitative assessment of the emigration of juvenile snook and tarpon from Bee Gum Point, a mosquito impoundment in the IRL. A total of 305 snook and 103 tarpon were captured within the impoundment and marked with passive integrated transponder (PIT) tags. Pairs of tag-detecting antennas were established at culverts in two basins within the impoundment and monitored for 2years. Only four tagged snook, and no tagged tarpon, were physically recaptured, while nearly 71% of the tagged snook and 77% of the tagged tarpon were detected at least once by antennas on the inside of the impoundment. Antennas on the outside of the culverts detected only 18 snook and eight tarpon emigrating through the culverts during 418days of two open seasons. When culverts were experimentally opened for a total of 21days in three periods during two summers, both snook (n=49) and tarpon (n=22) emigrated at far higher rates that they did during the normal open season. This significant increase in emigration indicates the importance of managing habitat connectivity to correspond to natural seasonal emigration patterns to increase the productivity of these fish nurseries.
机译：沿海湿地用作许多鱼类幼虫的托儿所，包括普通的斯诺克（Centropomus Undecimalis）和大西洋蒲公英（巨大的Atlanticus）。在印度河泻湖（IRL），佛罗里达州（美国）的数千公顷的红树林栖息地已被忽视蚊子控制，限制连接，潜在地减少苗圃栖息地价值。许多蓄水量管理通过10月至4月（蚊子的非繁殖季节）通过涵洞来提供连接到IRL的连接，其中蓄水池被隔绝，充满了水5月至9月从5月控制蚊子繁殖的水。为了确定蓄水休息的季节性是否影响苗圃栖息地价值，我们对蜂胶点的少年休止和蒲公英的移民进行了定量评估，在iRL中是一种蚊子淤积。在蓄水中共捕获305个Snook和103个Tarpon，并用被动集成的转发器（PIT）标记标记。在蓄水池内的两个盆地中的涵洞中建立了成对标签检测天线，并监测2年的2年。只有四个标记的阵列，没有标记的篷布，在物理上重新覆盖，而在蓄水池内部，至少一次将近71％的标记拍摄和77％的标记的篷布检测到至少一次被检测一次。在两个开放季节的418天中，涵洞外部的天线仅检测到18个冲锋和八个篷布，通过涵洞迁移到涵洞。当在两个夏天在三个时期进行三个时期进行了一定数上21天的时候，斯诺克（n = 49）和TARPON（n = 22）以普通开放季节在正常开放季节的速度下搬迁。移民的显着增加表明，管理栖息地连接与自然季节性移民模式相对应的重要性，以提高这些鱼苗的生产率。

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