Wintering area and experience effects on spring migration strategies, timing and breeding success in Icelandic-nesting Common Scoters (Melanitta nigra)

IF 2.1 3区 生物学 Q1 ORNITHOLOGY
Ibis Pub Date : 2025-04-03 DOI:10.1111/ibi.13411
Snæþór Aðalsteinsson, Ib Krag Petersen, Anthony D. Fox
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Abstract

Earlier spring arrival of migratory birds to breeding sites and advanced breeding often bring enhanced reproductive success but demand good body-condition. When populations exhibit extensive winter distributions, the differing energetic costs associated with the quality and migration distance to each wintering area can have implications for individual breeding performance. Using light-level geolocator data from 30 female Common Scoters Melanitta nigra marked at their northeast Iceland breeding site, we explored the extent to which spring migration strategy, arrival and breeding times, and breeding success were related to minimum migration distances from wintering areas to breeding site in multiple years. Because many females produced multiple years of data, we further tested the degree to which individuals used their experience to arrive and breed earlier with increasing age. The females wintered c. 1000–4200 km from the breeding site, yet mostly (87% of 67 tracks) 1000–2000 km away. Increased distance was significantly related to earlier departure from wintering areas (c. 9 days/1000 km), longer stopover time en route and later arrival to breeding sites (c. 6 days/1000 km). Timing of breeding was unrelated to arrival time or migration distance, but significantly advanced with increasing female age (excluding one outlier). Increased migration costs associated with more distant wintering areas do not therefore seem to carry over to affect subsequent timing of breeding despite later arrival, potentially as a consequence of the higher quality of those wintering areas or adequate time after arrival to replenish depleted energy stores. However, further study is needed to elucidate potential effects of breeding time and/or migration distance on breeding success.

Abstract Image

越冬区和越冬经验对冰岛筑巢斑鹬春季迁徙策略、时间和繁殖成功的影响
候鸟早春到达繁殖地和提前繁殖往往会提高繁殖成功率,但需要良好的身体状况。当种群表现出广泛的冬季分布时,与质量和到每个越冬地区的迁徙距离相关的不同能量成本可能会影响个体的繁殖表现。利用在冰岛东北部繁殖地标记的30只雌斑鹬的光照地理定位数据,研究了从越冬区到繁殖地的多年最小迁徙距离与春季迁徙策略、到达和繁殖时间以及繁殖成功率的关系。由于许多雌性产生了多年的数据,我们进一步测试了个体利用其经验随着年龄的增长而提前到达和繁殖的程度。雌性在距离繁殖地约1000-4200公里的地方越冬,但大多数(67只中87%)在1000-2000公里的地方。距离增加与较早离开越冬地区(约9天/1000公里)、较长中途停留时间和较晚到达繁殖地(约6天/1000公里)显著相关。繁殖时间与到达时间或迁徙距离无关,但随着雌性年龄的增加而显著提前(不包括一个异常值)。因此,尽管到达时间较晚,但与越冬地较远相关的迁徙成本增加似乎不会延续到随后的繁殖时间,这可能是由于越冬地的质量较高,或者到达后有足够的时间补充耗尽的能量储备。然而,繁殖时间和/或迁徙距离对繁殖成功的潜在影响还需要进一步的研究。
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来源期刊
Ibis
Ibis 生物-鸟类学
CiteScore
4.60
自引率
9.50%
发文量
118
审稿时长
6-12 weeks
期刊介绍: IBIS publishes original papers, reviews, short communications and forum articles reflecting the forefront of international research activity in ornithological science, with special emphasis on the behaviour, ecology, evolution and conservation of birds. IBIS aims to publish as rapidly as is consistent with the requirements of peer-review and normal publishing constraints.
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