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Guillaume de Lafontaine
University of Illinois at Urbana–Champaign
27Publications
12H-index
510Citations
Publications 27
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#1Joseph D. Napier (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
#2Guillaume de Lafontaine (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
Last.Feng Sheng Hu (UIUC: University of Illinois at Urbana–Champaign)H-Index: 44
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#1Matias FernandezH-Index: 2
#2Joseph D. NapierH-Index: 1
Last.Barbara HugH-Index: 10
view all 6 authors...
#1Guillaume de Lafontaine (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
#2Joseph D. Napier (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
Last.Feng Sheng Hu (UIUC: University of Illinois at Urbana–Champaign)H-Index: 44
view all 4 authors...
9 CitationsSource
#1Qian Hao (PKU: Peking University)H-Index: 7
#2Guillaume de Lafontaine (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
Last.LIUHongyan (PKU: Peking University)H-Index: 32
view all 8 authors...
8 CitationsSource
#1Matias Fernandez (UIUC: University of Illinois at Urbana–Champaign)H-Index: 2
#2Joseph D. Napier (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
Last.Guillaume de Lafontaine (Université du Québec)H-Index: 12
view all 5 authors...
Source
#1Guillaume de Lafontaine (Laval University)H-Index: 12
#2Jean Bousquet (Laval University)H-Index: 53
Assessing directional bias in interspecific gene flow might be important in determining the evolutionary trajectory of closely related species pairs. Using a set of 300 single nucleotide polymorphisms (SNPs) having variable propensity to cross species boundary, we evaluated the genomic extent and direction of interspecific gene flow in a progenitor-derivative spruce species pair (black spruce and red spruce). A higher rate of gene flow was found from black spruce toward red spruce purebreds than...
2 CitationsSource
#1Emile Warren (Laval University)H-Index: 1
#2Guillaume de Lafontaine (Laval University)H-Index: 12
Last.Jean Bousquet (Laval University)H-Index: 53
view all 8 authors...
Aim Tamarack (Larix laricina) is an early-successional transcontinental boreal conifer occurring within the spruce-fir dominated forest. The aim was to infer the species biogeographical history and to assess the putative genetic imprint left by interspecific competition during post-glacial migration, using cytoplasmic DNA and fossil data. Location Forty-five locations were sampled across the transcontinental range spanning the North American boreal forest. Methods A total of 621 trees were scann...
5 CitationsSource
#1Guillaume de Lafontaine (Laval University)H-Index: 12
#2Julien Prunier (Laval University)H-Index: 7
Last.Jean Bousquet (Laval University)H-Index: 53
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The genic species concept implies that while most of the genome can be exchanged somewhat freely between species through introgression, some genomic regions remain impermeable to interspecific gene flow. Hence, interspecific differences can be maintained despite ongoing gene exchange within contact zones. This study assessed the heterogeneous patterns of introgression at gene loci across the hybrid zone of an incipient progenitor–derivative species pair, Picea mariana (black spruce) and Picea ru...
21 CitationsSource
#1Luca Sitzia (University of Bordeaux)H-Index: 8
#2Pascal Bertran (University of Bordeaux)H-Index: 21
Last.Pierre VoinchetH-Index: 28
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Abstract Detailed stratigraphic analysis and numerical dating (OSL, IRSL, ESR, 14C) of Pleistocene coversands in southwest France enable the construction of a renewed chronostratigraphic framework for sand deposition. The chronological data obtained from sandsheet units testify to the development of transgressive dunefields since at least the Middle Pleistocene (MIS 10). Three main phases of accumulation occurred during the Last Glacial. The oldest one (64–42 ka) is associated with wet sandsheet...
16 CitationsSource
#1Benjamin Cinget (Laval University)H-Index: 2
#2Guillaume de Lafontaine (Laval University)H-Index: 12
Last.Jean Bousquet (Laval University)H-Index: 53
view all 4 authors...
Secondary contact between closely related taxa routinely occurs during postglacial migrations. After initial contact, the location of hybrid zones may shift geographically or remain spatially stable over time in response to various selective pressures or neutral processes. Studying the extent and direction of introgression using markers having contrasted levels of gene flow can help unravel the historical dynamics of hybrid zones. Thanks to their contrasted maternal and paternal inheritance, res...
19 CitationsSource
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