NDLI: Low genetic differentiation between Greenlandic and Siberian Sanderling populations implies a different phylogeographic history than found in Red Knots

Content Provider	Springer Nature Link
Author	Conklin, Jesse R. Reneerkens, Jeroen Verkuil, Yvonne I. Tomkovich, Pavel S. Palsbøll, Per J. Piersma, Theunis
Copyright Year	2015
Abstract	The Greenlandic and west-central Siberian breeding populations of Sanderlings Calidris alba are separated by ca. 2000 km during the breeding season, but mix in Europe to some extent during migration. However, the number of Siberian Sanderlings that spend the non-breeding season along the East Atlantic Flyway (extending from western Europe to South Africa), if any, is unknown. Although both populations are considered part of the nominate subspecies C. a. alba based on morphology, population structure in Sanderlings has yet to be described with molecular methods. We examined genetic differentiation at the mtDNA control region (CR) and seven microsatellite loci between Greenland- and Siberia-breeding Sanderlings in order to: (1) develop a diagnostic tool for assessing the breeding origin of Sanderlings along the East Atlantic Flyway, and (2) provide a comparison with the co-distributed and ecologically similar Red Knot, in which CR differentiation of geographically analogous populations (C. canutus islandica and C. c. canutus) has indicated isolation of lineages near the time of the last glacial maximum. By contrast, we found only weak differentiation between the Sanderling breeding populations at the CR, and no differentiation at microsatellite loci. These results suggest that the assignment of breeding origin of Sanderlings on Afro-European flyways will not be possible with simple and inexpensive genetic methods, and imply that Sanderlings and Red Knots have very different post-glacial phylogeographic histories. Geringe genetische Unterschiede zwischen grönländischen und sibirischen Sanderling-Populationen ( Calidris alba ) weisen auf eine andere phylogeographischen Herkunft als die des Knutt ( Calidris canutus ) hin Die grönländischen und die west-zentral-sibirischen Brutpopulationen des Sanderlings (Calidris alba) sind während der Brutzeit ca. 2.000 km voneinander entfernt, mischen sich aber zu einem guten Teil während der Zugzeit. Allerdings ist die Anzahl derjenigen sibirischen Sanderlinge, die sich außerhalb der Brutzeiten entlang der ostatlantischen Zugroute (reicht von Westeuropa bis nach Südafrika) aufhalten, nicht bekannt. Obwohl beide Populationen aufgrund ihrer Morphologie als Teile der Nominalform Calidris alba alba angesehen werden, steht für den Sanderling eine Beschreibung der Populations-Struktur mit molekularbiologischen Methoden noch aus. Wir bestimmten für die mtDNA Kontrollregion (CR) und für sieben Mikrosatellitenloci die genetischen Unterschiede zwischen in Grönland und in Sibirien brütenden Sanderlingen, (1) um ein Diagnose-Werkzeug zu entwickeln, mit dem der Ursprung von Sanderlingen entlang der ostatlantischen Zugroute bestimmt werden kann, und (2) um einen Vergleich mit dem verbreitungsmäßig und ökologisch ähnlichen Knutt zu ermöglichen, für die eine CR-Differenzierung der geographisch analogen Populationen (C. canutus islandica and C. c. canutus) die Aufspaltung der Abstammungslinien etwa zur Zeit des letzteiszeitlichen Maximums andeutet. Stattdessen fanden wir auf der CR nur schwache Unterschiede zwischen den Brutpopulationen des Sanderlings und gar keine Unterschiede bei den Mikrosatellitenloci. Diese Ergebnisse legen nahe, dass eine Zuordnung der Herkunftsgegend von Sanderlingen auf der afrikanisch-europäischen Zugroute nicht mit einfachen und preiswerten genetischen Methoden möglich sein wird und dass die phylogeographische Entwicklung von Sanderling und Knutt nach der Eiszeit sehr unterschiedlich verlaufen ist.
Starting Page	325
Ending Page	332
Page Count	8
File Format	PDF
ISSN	21937192
Journal	Journal für Ornithologie
Volume Number	157
Issue Number	1
e-ISSN	21937206
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-09-07
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Shorebirds Migration Sanderling Red Knot Genetics Population structure Phylogeography Zoology Ecology Fish & Wildlife Biology & Management
Content Type	Text
Resource Type	Article

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