Supersize me: Does anthropogenic food change the body condition of Silver Gulls? A comparison between urbanized and remote, non-urbanized areas
Supersize me: Does anthropogenic food change the body condition of Silver Gulls? A comparison between urbanized and remote, non-urbanized areas
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DOI：
10.1675/1524-4695(2008)31
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发表时间：
2008-03-01
期刊：
影响因子：
0.3
通讯作者：
Richardson, Alastair
中科院分区：
文献类型：
--
作者：
Auman, Heidi J.;Meathrel, Catherine E.;Richardson, Alastair
全球几种海鸥物种的城市数量正在急剧增加，这通常被认为是在城市化环境中获得更多人为食物的结果。这项研究通过比较偏远非城市化地点（弗诺岛群）和澳大利亚塔斯马尼亚城市化地点（霍巴特）的鸟类，调查了人为饮食对银鸥（Larus novaehollandiae）质量和身体状况的潜在影响。海鸥的质量、大小和身体状况与鸟类是否正在繁殖以及繁殖周期的阶段无关。来自这种城市环境的雄性海鸥比结构相同的非城市海鸥更重，身体状况也更好，但雌性之间没有发现差异。
Urban populations of several gull species worldwide are increasing dramatically and this is often assumed to be a result of greater access to anthropogenic food obtained in urbanized environments. This research investigated the potential effects of an anthropogenic diet on the mass and body condition of Silver Gulls (Larus novaehollandiae) by comparing birds at a remote, non-urbanized site (Furneaux Island Group) with those at an urbanized (Hobart) site in Tasmania, Australia. The mass, size and body condition of gulls were independent of whether or not a bird was breeding, and independent of the stage in the breeding cycle. Male gulls from this urban environment were heavier and of greater body condition than the structurally identical, non-urban gulls, but no differences were detected between females.