Molecular phylogeny in mytilids supports the wooden steps to deep-sea vents hypothesis.
Molecular data were used to study the diversity of mytilids associated with sunken-woods sampled in the Solomon Islands and discuss the 'wooden steps to deep-sea vent' hypothesis proposed by Distel et al. First, COI data used in a barcoding approach confirm the presence of four distinct species. Analyses of the 18S rDNA and COI dataset then confirmed that these sunken-wood mytilids belonged to a monophyletic group including all species from deep-sea reducing environments. Finally, we analyzed the relationships within this monophyletic group that include the Bathymodiolinae using a COI dataset and a combined analysis of mitochondrial COI and ND4 genes and nuclear rDNA 18S and 28S. Our study supported the 'wooden steps to deep-sea vent' hypothesis: one of the sunken-wood species had a basal position within the Bathymodiolionae, and all described vent and seep mussels included in our analyses were derived taxa within Bathymodiolinae.
Samadi
Sarah
S
Systématique, adaptation et évolution, UMR 7138 UPMC-IRD-MNHN-CNRS (UR IRD 148), département Systématique et évolution, Muséum national d'histoire naturelle, CP 26, 57, rue Cuvier, 75231 Paris cedex 05, France. sarah@mnhn.fr
Quéméré
Erwan
E
Lorion
Julien
J
Tillier
Annie
A
von Cosel
Rudo
R
Lopez
Philippe
P
Cruaud
Corinne
C
Couloux
Arnaud
A
Boisselier-Dubayle
Marie-Catherine
MC
D000818:Animals; D014644:Genetic Variation; D008967:Molecular Biology; D049879:Mytilidae / Q000145:classification* / Q000235:genetics*; D010802:Phylogeny; D012623:Seawater / Q000469:parasitology*; D014934:Wood / Q000469:parasitology*