FN Archimer Export Format
PT J
TI Locked in the icehouse: evolution of an endemic Epimeria (Amphipoda, Crustacea) species flock on the Antarctic shelf
BT 
AF VERHEYE, Marie L.
   BACKELJAU, Thierry
   D'ACOZ, Cedric d'Udekem
AS 1:1,2;2:1,3;3:1;
FF 1:;2:;3:;
C1 Royal Belgian Inst Nat Sci, OD Taxon & Phylogeny, Rue Vautier 29, B-1000 Brussels, Belgium.
   Catholic Univ Louvain la Neuve, Dept Biol, Marine Biol Lab, Croix Sud 3 Bte L7-06-04, B-1348 Louvain La Neuve, Belgium.
   Univ Antwerp, Evolutionary Ecol Grp, Univ Pl 1, B-2160 Antwerp, Belgium.
C2 ROYAL BELGIAN INST NAT SCI, BELGIUM
   CATHOLIC UNIV LOUVAIN LA NEUVE, BELGIUM
   UNIV ANTWERP, BELGIUM
IF 4.412
TC 15
UR https://archimer.ifremer.fr/doc/00386/49712/83605.pdf
LA English
DT Article
CR BIOPAPUA
   CEAMARC ICOTA 2008
   REVOLTA 2011
   SIBEX - MD 42
BO Alis
   L'Astrolabe
   Marion Dufresne
DE ;Amphipoda;Southern ocean;Historical biogeography;Phylogeny;Divergence times;Diversification
AB The Antarctic shelf’s marine biodiversity has been greatly influenced by the climatic and glacial history of the region. Extreme temperature changes led to the extinction of some lineages, while others adapted and flourished. The amphipod genus Epimeria is an example of the latter, being particularly diverse in the Antarctic region. By reconstructing a time-calibrated phylogeny based on mitochondrial (COI) and nuclear (28S and H3) markers and including Epimeria species from all oceans, this study provides a temporal and geographical framework for the evolution of Antarctic Epimeria. The monophyly of this genus is not supported by Bayesian Inference, as Antarctic and non-Antarctic Epimeria form two distinct well-supported clades, with Antarctic Epimeria being a sister clade to two stilipedid species. The monophyly of Antarctic Epimeria suggests that this clade evolved in isolation since its origin. While the precise timing of this origin remains unclear, it is inferred that the Antarctic lineage arose from a late Gondwanan ancestor and hence did not colonize the Antarctic region after the continent broke apart from the other fragments of Gondwanaland. The initial diversification of the clade occurred 38.04 Ma (95% HPD [48.46 Ma; 28.36 Ma]) in a cooling environment. Adaptation to cold waters, along with the extinction of cold-intolerant taxa and resulting ecological opportunities, likely led to the successful diversification of Epimeria on the Antarctic shelf. However, there was neither evidence of a rapid lineage diversification early in the clade’s history, nor of any shifts in diversification rates induced by glacial cycles. This suggests that a high turnover rate on the repeatedly scoured Antarctic shelf could have masked potential signals of diversification bursts. 
PY 2017
PD SEP
SO Molecular Phylogenetics And Evolution
SN 1055-7903
PU Academic Press Inc Elsevier Science
VL 114
UT 000407307000002
BP 14
EP 33
DI 10.1016/j.ympev.2017.05.013
ID 49712
ER

EF