气候变化领域集成服务门户(CCPortal): Environmental drivers of annual population fluctuations in a trans-Saharan insect migrant

CCPortal

DOI	10.1073/pnas.2102762118
	Environmental drivers of annual population fluctuations in a trans-Saharan insect migrant
	Hu G.; Stefanescu C.; Oliver T.H.; Roy D.B.; Brereton T.; Van Swaay C.; Reynolds D.R.; Chapman J.W.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:26
英文摘要	Many latitudinal insect migrants including agricultural pests, disease vectors, and beneficial species show huge fluctuations in the year-to-year abundance of spring immigrants reaching temperate zones. It is widely believed that this variation is driven by climatic conditions in the winter-breeding regions, but evidence is lacking. We identified the environmental drivers of the annual population dynamics of a cosmopolitan migrant butterfly (the painted lady Vanessa cardui) using a combination of long-term monitoring and climate and atmospheric data within the western part of its Afro- Palearctic migratory range. Our population models show that a combination of high winter NDVI (normalized difference vegetation index) in the Savanna/Sahel of sub-Saharan Africa, high spring NDVI in the Maghreb of North Africa, and frequent favorably directed tailwinds during migration periods are the three most important drivers of the size of the immigration to western Europe, while our atmospheric trajectory simulations demonstrate regular opportunities for wind-borne trans-Saharan movements. The effects of sub-Saharan vegetative productivity and wind conditions confirm that painted lady populations on either side of the Sahara are linked by regular mass migrations, making this the longest annual insect migration circuit so far known. Our results provide a quantification of the environmental drivers of large annual population fluctuations of an insect migrant and hold much promise for predicting invasions of migrant insect pests, disease vectors, and beneficial species. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Insect migration; Lepidoptera; Painted lady butterfly; Population dynamics
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238705
作者单位	Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China; Natural Sciences Museum of Granollers, Granollers, Catalonia, E08402, Spain; Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; School of Biological Sciences, University of Reading, Reading, RG6 6AS, United Kingdom; UK Centre for Ecology and Hydrology, Crowmarsh Gifford, OX10 8BB, United Kingdom; Butterfly Conservation, Wareham, BH20 5QP, United Kingdom; Dutch Butterfly Conservation, Wageningen, NL-6700 AM, Netherlands; Natural Resources Institute, University of Greenwich, Chatham, ME4 4TB, United Kingdom; Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden, AL5 2JQ, United Kingdom; Centre for Ecology and Conservation, University of Exeter, Penryn, TR10 9FE, United Kingdom; Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, United Kingdom
推荐引用方式 GB/T 7714	Hu G.,Stefanescu C.,Oliver T.H.,et al. Environmental drivers of annual population fluctuations in a trans-Saharan insect migrant[J],2021,118(26).
APA	Hu G..,Stefanescu C..,Oliver T.H..,Roy D.B..,Brereton T..,...&Chapman J.W..(2021).Environmental drivers of annual population fluctuations in a trans-Saharan insect migrant.Proceedings of the National Academy of Sciences of the United States of America,118(26).
MLA	Hu G.,et al."Environmental drivers of annual population fluctuations in a trans-Saharan insect migrant".Proceedings of the National Academy of Sciences of the United States of America 118.26(2021).