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首页> 外文期刊>Marine Ornithology >LOCAL MOVEMENTS, FORAGING PATTERNS, AND HEAVY METALS EXPOSURE IN CASPIAN TERNS HYDROPROGNE CASPIA BREEDING ON PENGUIN ISLAND, WESTERN AUSTRALIA
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LOCAL MOVEMENTS, FORAGING PATTERNS, AND HEAVY METALS EXPOSURE IN CASPIAN TERNS HYDROPROGNE CASPIA BREEDING ON PENGUIN ISLAND, WESTERN AUSTRALIA

机译：在西澳大利亚企鹅岛的Caspian Terns Hydroprogne Caspia繁殖中的本地运动，觅食模式和重金属暴露

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摘要

Caspian Terns from a breeding colony on Penguin Island in the southern metropolitan coastal waters of Perth, Western Australian, dispersed primarily onto the nearby Peel-Harvey Estuary. The terns preyed on benthic fishes associated with marine seagrass meadows and estuarine shallows. The diet was dominated by detritivores, in particular sea mullet Mugil cephalus and Perth herring Nematalosa vlaminghi. Stable isotope values from adult feathers also indicated the importance of perennial or annual seagrass habitats for foraging. Cadmium and lead levels in feathers were low. However, most breeding adults had elevated levels of mercury in their tail feathers. Mercury concentrations were strongly correlated with <5,5N, indicating a link between exposure and the mineralised nitrogen associated with the relative eutrophication of the foraging habitats. Mercury concentrations were strongly correlated with selenium in the adult feathers, suggesting that selenium was being regulated in response to mercury exposure.
机译：来自澳大利亚西部珀斯南部大都市沿海水域的企鹅岛的繁殖殖民地，主要在附近的Peel-Harvey口水上分散。在与海洋海草草甸和河口浅滩相关的底栖鱼捕食。饮食由Detritivores，特别是海洋mullet Mugil头孢菌和珀斯鲱鱼Nematalosa vlaminghi。成人羽毛的稳定同位素值也表明常年或年度海草栖息地用于觅食的重要性。羽毛中的镉和铅水平较低。然而，大多数繁殖成人在尾羽中含有汞的水平升高。汞浓度与<5,5N强烈相关，表明曝光与与觅食栖息地相对富营养化相关的矿化氮之间的联系。汞浓度与成年羽毛中的硒强烈相关，表明硒正在响应汞暴露而受到调节。

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