Geographic origin and migration phenology of European red admirals (Vanessa atalanta) as revealed by stable isotopes
Research output: Contribution to journal › Article
Background: Long-distance migration has evolved multiple times in different animal taxa. For insect migrants, the complete annual migration cycle covering several thousand kilometres, may be performed by several generations, each migrating part of the distance and reproducing. Different life-cycle stages and preferred orientation may thus, be found along the migration route. For migrating red admirals (Vanessa atalanta) it has been questioned if they reproduce in the most northern part of the range. Here we present migration phenology data from a two-year time series of migrating red admirals captured at Rybachy, Kaliningrad, in the northern part of Europe investigating time for migration, life-history stage (migration, reproduction) as well as site of origin in individual butterflies. Methods: Red admirals were captured daily at a coastal site during spring, summer and autumn in 2004 and 2005. For the sampled individuals, reproductive status and fuel content were estimated by visual inspection, and hydrogen isotopes (δ 2H) were analysed in wing samples. δ 2H values was compared with samples from two nearby reference sites in Estonia and Poland. Results: Analysis of hydrogen isotopes (δ 2H) in red admiral wings showed that the spring cohort were of a southerly origin, while those caught in August or later in the autumn were from the local region or areas further to the north. All females caught during spring had developing eggs in their abdomen, but no eggs were found in late summer/autumn. There was a male-biased sex ratio during autumn and a difference in lipid content between years. When comparing the isotopic data with inland nearby locations, it was clear that the range of δ 2H values (- 181 to - 78) was wider at Rybachy as compared to the two reference sites in Estonia and Poland (- 174 to - 100). Conclusions: During spring, migratory female red admirals arrived from the south and were ready to reproduce, while the autumn passage mainly engaged local and more northern individuals carrying large fuel deposits in preparation for long-distance migration. The phenology data suggest that individuals select to migrate in favourable weather conditions and that numbers may differ between years. Future studies should focus on individual sampling at a wide range of sites to reveal differential migration strategies and timing of migration between sexes and populations of migrating butterflies.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Publication status||Published - 2018 Dec 21|
Niklas Larsson, Atticus Pinzon-Rodriguez, Arne Hegemann, Brianne Addison, Charlie Cornwallis, Giuseppe Bianco, INGRID SASSENHAGEN, Jerker Vinterstare, Julian Melgar, Julio Neto, Lasse Jakobsen, Mikael Ekvall, Mihaela Ilieva, Natalia Annenkova, Pallavi Chauhan, Sylvie Tesson, Yannis Vardanis, Catherine Tayleur, Emily Baird, Olle Lind, Jakob Löndahl, Tina Santl-Temkiv, Anders Hedenström, Åke Lindström, Anders Nilsson, Bengt Hansson, Dennis Hasselquist, Erik Svensson, Henrik Smith, Helena Westerdahl, Jan-Åke Nilsson, Johan Bäckman, Katarina Hedlund, Lars Råberg, Maria Ingimarsdottir, Martin Green, Maria Sandell, Martin Stjernman, Nils Kjellén, Ola Olsson, Rachel Muheim, Richard Ottvall, Staffan Bensch, Xiuhong Yang, Sara Snogerup-Linse, Heiner Linke, Mikkel Brydegaard Sorensen, Patrik Lundin, Sune Svanberg, Zuguang Guan, Ann-Sofie Albrekt, Anders Hargeby, Anders Persson, Christer Brönmark, Emma Kritzberg, Karin Rengefors, Lars-Anders Hansson, Olof Berglund, Wilhelm Granéli, Alice Nicolle, Ben Chapman, Christian Skov, Johan Ahlgren, Jakob Brodersen, Jessica von Einem, Kaj Hulthén, Kelly Gutseit, Karen Lebret, Lynn Ranåker, MATTIAS EKVALL, Mercy Lard, MIKAEL JÖNSSON, PER HALLGREN, Peter Ljungberg, Samuel Hylander, Tony Fagerberg, Therese Jephson, Tomas Johansson, Bjorn Canback, Bengt Danielsson, Christoffer Johansson, Emma Ådahl, Florian Muijres, Jörgen Ripa, Melissa Bowlin, Niclas Jonzén, Per Henningsson, Roger Härdling, Andreas Nord, Arzu Gursoy, Asghar Muhammad, Anna Nilsson, Anna Runemark, Barbara Tschirren, Cecilia Nilsson, Håkan Karlsson, Irene Pala, Juliana Dänhardt, Johan Nilsson, Jens Rydell, Jonas Waldenström, Keith Larson, Kristina Karlsson, Kristin Scherman, Mikael Åkesson, Martin Andersson, Maja Tarka, Maren Wellenreuther, Max Lundberg, Miriam Liedvogel, Maj Rundlöf, Martin Wintersparv Stervander, Machteld Verzijden, Olof Hellgren, Raymond Klaassen, Roine Strandberg, Susanne Åkesson, SANDRA SKÖLD CHIRIAC, Sophia Engel, Sissel Sjöberg, Sara Naurin, Thomas Alerstam, Tom J Evans, Torbjörn von Schantz, Ulf Ottosson, Marie Dacke & Helena Osvath
2008/06/01 → 2018/12/31