European Journal of Wildlife Research ( IF 2 ) Pub Date : 2022-03-15 , DOI: 10.1007/s10344-022-01567-w Melanie Marx , Yvonne R. Schumm , Kevin J. Kardynal , Keith A. Hobson , Gregorio Rocha , Pavel Zehtindjiev , Dimitris Bakaloudis , Benjamin Metzger , Jacopo G. Cecere , Fernando Spina , Marco Cianchetti-Benedetti , Sylke Frahnert , Christian C. Voigt , Hervé Lormée , Cyril Eraud , Petra Quillfeldt
Conservation of migratory birds requires knowledge of breeding and nonbreeding ranges and the connections between them. European turtle doves (Streptopelia turtur) are Palearctic-African long-distance migrants with wintering areas in the Sub-Saharan belt that are classed as vulnerable due to strong population declines. However, detailed non-breeding locations of individuals from different migratory flyways are unknown. To identify wintering regions of turtle doves, we measured stable isotopes of feathers grown on the wintering grounds and used a dual-isotope (hydrogen (δ2Hf) and carbon (δ13Cf)) probabilistic assignment to analyse origins of individuals migrating through the western and central/eastern flyways. The most probable wintering areas for turtle dove samples from both flyways were in the western and central Sub-Sahara. However, we found differences in δ2Hf and δ13Cf values between turtle doves following different migratory routes (western vs central/eastern flyway). This result suggests a higher likelihood of origins in the central Sub-Sahara for central and eastern migrants, while turtle doves using the western flyway originated primarily in the western Sub-Sahara, highlighting the importance of both regions for the future conservation of turtle doves from European breeding populations. The establishment of migratory connectivity of populations requires sampling from birds from the European as well as Asian continent; however, we provide important results that can be used to test hypotheses regarding population declines resulting from factors experienced over the full annual cycle for some populations.
中文翻译:
羽毛稳定同位素(δ2Hf 和 δ13Cf)确定了欧洲斑鸠的撒哈拉以南越冬地
候鸟的保护需要了解繁殖和非繁殖范围以及它们之间的联系。欧洲斑鸠(Streptopelia turtur)是古北-非洲的长途迁徙者,在撒哈拉以南地区越冬,由于人口急剧下降而被归类为易受伤害的地区。然而,来自不同迁徙飞行路线的个体的详细非繁殖位置尚不清楚。为了确定斑鸠的越冬区域,我们测量了在越冬地生长的羽毛的稳定同位素,并使用了双同位素(氢(δ 2 H f)和碳(δ 13 C f ))) 概率分配,以分析通过西部和中部/东部飞行路线迁移的个人的起源。来自两条飞行路线的斑鸠样本最可能越冬的地区是在撒哈拉以南的西部和中部。然而,我们发现δ 2 H f和δ 13 C f存在差异遵循不同迁徙路线(西部与中部/东部飞行路线)的斑鸠之间的值。这一结果表明,中部和东部移民起源于撒哈拉以南中部的可能性更高,而使用西部飞行路线的斑鸠主要起源于撒哈拉以南西部,突出了这两个地区对未来保护斑鸠的重要性欧洲繁殖种群。建立种群迁徙连通性需要从欧洲和亚洲大陆的鸟类中取样;然而,我们提供了重要的结果,可用于检验关于某些人口在整个年度周期中经历的因素导致的人口下降的假设。