FN Archimer Export Format
PT J
TI Travelling in time with networks: Revealing present day hybridization versus ancestral polymorphism between two species of brown algae, Fucus vesiculosus and F. spiralis
BT 
AF MOALIC, Yann
   ARNAUD-HAOND, Sophie
   PERRIN, Cecile
   PEARSON, Gareth A.
   SERRAO, Ester A.
AS 1:1;2:1;3:2;4:2;5:2;
FF 1:PDG-REM-EEP-LEP;2:PDG-REM-EEP-LEP;3:;4:;5:;
C1 IFREMER, Inst Francais Rech Exploitat Mer, Ctr Brest, F-29280 Plouzane, France.
   Univ Algarve, CIMAR, CCMAR, P-8005139 Faro, Portugal.
C2 IFREMER, FRANCE
   UNIV ALGARVE, PORTUGAL
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 3.521
TC 20
UR https://archimer.ifremer.fr/doc/00035/14600/11921.pdf
LA English
DT Article
AB Background: Hybridization or divergence between sympatric sister species provides a natural laboratory to study speciation processes. The shared polymorphism in sister species may either be ancestral or derive from hybridization, and the accuracy of analytic methods used thus far to derive convincing evidence for the occurrence of present day hybridization is largely debated. Results: Here we propose the application of network analysis to test for the occurrence of present day hybridization between the two species of brown algae Fucus spiralis and F. vesiculosus. Individual-centered networks were analyzed on the basis of microsatellite genotypes from North Africa to the Pacific American coast, through the North Atlantic. Two genetic distances integrating different time steps were used, the Rozenfeld (RD; based on alleles divergence) and the Shared Allele (SAD; based on alleles identity) distances. A diagnostic level of genotype divergence and clustering of individuals from each species was obtained through RD while screening for exchanges through putative hybridization was facilitated using SAD. Intermediate individuals linking both clusters on the RD network were those sampled at the limits of the sympatric zone in Northwest Iberia. Conclusion: These results suggesting rare hybridization were confirmed by simulation of hybrids and F2 with directed backcrosses. Comparison with the Bayesian method STRUCTURE confirmed the usefulness of both approaches and emphasized the reliability of network analysis to unravel and study hybridization
PY 2011
PD JAN
SO Bmc Evolutionary Biology
SN 1471-2148
PU Biomed Central Ltd
VL 11
UT 000289409500002
BP 1
EP 13
DI 10.1186/1471-2148-11-33
ID 14600
ER

EF