BACK FROM AFRICA - WHOS RUNNING AHEAD - DIFFERENTIAL MIGRATION OF SEX AND AGE CLASSES IN PALEARCTIC-AFRICAN SPRING MIGRANTS
BACK FROM AFRICA - WHOS RUNNING AHEAD - DIFFERENTIAL MIGRATION OF SEX AND AGE CLASSES IN PALEARCTIC-AFRICAN SPRING MIGRANTS
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DOI：
10.1080/00306525.1994.9639676
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发表时间：
1994-06-01
期刊：
影响因子：
1
通讯作者：
MONTEMAGGIORI, A
中科院分区：
文献类型：
--
作者：
SPINA, F;MASSI, A;MONTEMAGGIORI, A
性别和年龄组的差异迁移在16种古北极-非洲移民在其向北的春季旅程通过地中海中部已调查从一个大型数据集收集的4个意大利岛屿期间的“”Progetto Piccole岛“。研究的种属为：欧洲夜鹰Caprimulgus europaeus、家燕Hirundo rustica、黄长尾小鹰Motacilla flava、红尾红尾鸫Phoenicurus、红腹岩栖莺Whinchat Saxicola rubetra、北方小麦水芹Oenanthe、黑耳小麦水芹O. hispanica、亚高山柳莺Sylvia cantillans、白喉莺S. communis，黑顶S. atricapilla、白颈领姬鹬Ficedula albicollis、斑姬鹬F. hypoleuca、黄鹂Oriolus oriolus、红背伯劳Lanius collurio、林莺Shrike L.参议员奥图兰·邦廷·恩贝里萨·霍图拉纳。男性和女性的季节性诱捕模式进行了分析，无论是从总样本和每年的基础上。在16个物种中，有14个物种的雄性比雌性早死亡，其中13个物种的差异达到显著水平。在选定的物种，虽然一般的诱捕模式可能会有显着不同的年份，男性和女性之间的时间差距仍然是一个相当恒定的功能。在一个子样本的13个物种，成年人被发现迁移早于一岁的26例中的18（显着差异发现在12例），与成年鸟类的早期运动的女性比男性的发病率略高。这种策略似乎是春季迁徙的另一个特点，这一点得到了更详细的分析的证实，这些分析涉及在单个年份和/或地点收集的样本。
The differential migration of sex and age classes in 16 species of Palearctic-African migrants during their northward spring journey through the Central Mediterranean has been investigated from a large data set collected on 4 Italian islands during the ''Progetto Piccole Isole''. Species investigated were: European Nightjar Caprimulgus europaeus, Barn Swallow Hirundo rustica, Yellow Wagtail Motacilla flava, Common Redstart Phoenicurus phoenicurus, Whinchat Saxicola rubetra, Northern Wheatear Oenanthe oenanthe, Black-eared Wheatear O. hispanica, Subalpine Warbler Sylvia cantillans, Whitethroat S. communis, Blackcap S. atricapilla, Collared Flycatcher Ficedula albicollis, Pied Flycatcher F. hypoleuca, Golden Oriole Oriolus oriolus, Red-backed Shrike Lanius collurio, Woodchat Shrike L. senator, Ortolan Bunting Emberiza hortulana. The seasonal trapping patterns of males and females have been analysed both from the total samples and on a yearly basis. Males have been found passing earlier than females in 14 out of 16 cases, with differences reaching the level of significance in 13 out of 16 species. In the selected species, although the general trapping patterns may vary significantly among years, a temporal gap between males and females remains a fairly constant feature. In a sub-sample of 13 species, adults are found to migrate earlier than yearlings in 18 of 26 cases (significant differences found in 12 cases), with a slightly higher incidence of earlier movements of adult birds in females than males. This strategy seems to be another feature of spring migration, as confirmed by more detailed analyses referred to samples collected on single years and/or sites.