10.5061/DRYAD.K0P2NGF63
Arntzen, Jan W.
Naturalis Biodiversity Center
López-Delgado, Julia
Naturalis Biodiversity Center
van Riemsdijk, Isolde
Naturalis Biodiversity Center
Wielstra, Ben
Naturalis Biodiversity Center
A genomic footprint of a moving hybrid zone in marbled newts
Dryad
dataset
2020
2021-06-24T00:00:00Z
2021-06-24T00:00:00Z
en
https://doi.org/10.1111/jzs.12439
1664277152 bytes
6
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
We developed a panel of 44 nuclear genetic markers and applied this to two
species of marbled newts in the north (Triturus marmoratus) and the south
(T. pygmaeus) of the Iberian Peninsula, to document pattern and process of
interspecific gene flow. The northernmost occurrence of T. pygmaeus
genetic material was in a T. marmoratus population north of the Vouga
river estuary. This suggested the past presence of a hybrid zone, possibly
coinciding with a natural river outlet at ca. 1200 A.D. Since 1808, the
species contact has moved back south to a by then completed, man-made
Vouga channel. We also found a T. marmoratus genomic footprint in T.
pygmaeus from the Serra de Sintra, near Lisbon. In combination with a
previously reported southern, relic occurrence of T. marmoratus in between
both areas, the data point to the superseding with hybridization of T.
marmoratus by T. pygmaeus. We estimate that the species hybrid zone has
moved over a distance of ca. 215 km.
Provided are the raw Ion Torrent reads and the reads processed through the
bioinformatics pipeline described in: Wielstra, B., Duijm, E., Lagler, P.,
Lammers, Y., Meilink, W.R.M., Ziermann, J.M., Arntzen, J.W. (2014).
Parallel tagged amplicon sequencing of transcriptome-based genetic markers
for Triturus newts with the Ion Torrent next-generation sequencing
platform. Molecular Ecology Resources 14(5): 1080-1089.
(https://onlinelibrary.wiley.com/doi/full/10.1111/1755-0998.12242)