干旱区生态环境知识资源中心(Arid): Flight performance of migrating juvenile Barn Swallows Hirundo rustica in relation to fat load and wing morphology

Arid

DOI	10.3161/00016454AO2020.55.2.004
	Flight performance of migrating juvenile Barn Swallows Hirundo rustica in relation to fat load and wing morphology
	Matyjasiak, Piotr; Bazzi, Gaia; Rubolini, Diego
通讯作者	Matyjasiak, P (corresponding author), Polish Acad Sci, Museum & Inst Zool, Wilcza 64, PL-00679 Warsaw, Poland.
来源期刊	ACTA ORNITHOLOGICA
ISSN	0001-6454
EISSN	1734-8471
出版年	2020
卷号	55 期号:2 页码:174-197
英文摘要	Migratory birds have evolved the ability to accumulate fat reserves to fuel their migratory journeys. However, increased fuel load leads to an increased body mass, which is expected to impair flight performance and increase predation risk. Results of previous research are contradictory, with some studies reporting detrimental effects of fat load on flight performance, while others showing no such influences. Furthermore, no studies have investigated the relationship between fat load and flight performance in obligate aerial insectivores, which are known to accumulate only moderate fat loads while migrating overland and not crossing wide ecological barriers such as oceans or deserts. In this study we investigated the inter-individual variation in short-term flight performance (flight manoeuvrability, velocity and acceleration) in juvenile Barn Swallows Hirundo rustica in relation to fat load in Poland (central Europe), during the initial stages of autumn southward migration. We evaluated individual swallow fat loads by means of a Total Body Electrical Conductivity (TOBEC) scanner. In order to evaluate short-term flight performance in a standardised manner we used flight tunnels. We controlled statistically for the independent effect of wing morphology, which can be expected to influence flight performance. Juvenile fat loads were on average 7.5% (range 0.2-20.5) of lean body mass, but we found no negative effect of the fat mass on short-term flight performance traits. Individuals with larger fat mass reached higher velocity compared to leaner ones, which is in line with theoretical expectations. However, fat mass did not significantly predict flight manoeuvrability or acceleration. The results indicate that relatively small fat loads accumulated by juvenile Barn Swallows during overland migration do not impair short-term flight performance.
英文关键词	flight performance fat load Hirundo rustica migration predation risk wing shape
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000634508400004
WOS类目	Ornithology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348682
作者单位	[Matyjasiak, Piotr] Polish Acad Sci, Museum & Inst Zool, Wilcza 64, PL-00679 Warsaw, Poland; [Bazzi, Gaia; Rubolini, Diego] Univ Milan, Dipartimento Sci & Polit Ambientali, Via Celoria 26, I-20133 Milan, Italy
推荐引用方式 GB/T 7714	Matyjasiak, Piotr,Bazzi, Gaia,Rubolini, Diego. Flight performance of migrating juvenile Barn Swallows Hirundo rustica in relation to fat load and wing morphology[J],2020,55(2):174-197.
APA	Matyjasiak, Piotr,Bazzi, Gaia,&Rubolini, Diego.(2020).Flight performance of migrating juvenile Barn Swallows Hirundo rustica in relation to fat load and wing morphology.ACTA ORNITHOLOGICA,55(2),174-197.
MLA	Matyjasiak, Piotr,et al."Flight performance of migrating juvenile Barn Swallows Hirundo rustica in relation to fat load and wing morphology".ACTA ORNITHOLOGICA 55.2(2020):174-197.