@article{fdi:010064111,
  title = {{D}oes natural selection explain the fine scale genetic structure at the nuclear exon {G}lu-5 ' in blue mussels from {K}erguelen ?},
  author = {{G}{\'e}rard, {K}. and {R}oby, {C}. and {B}ierne, {N}. and {B}orsa, {P}hilippe and {F}eral, {J}. {P}. and {C}henuil, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {K}erguelen archipelago, isolated in the {S}outhern {O}cean, shelters a blue mussel {M}ytilus metapopulation far from any influence of continental populations or any known hybrid zone. {T}he finely carved coast leads to a highly heterogeneous habitat. {W}e investigated the impact of the environment on the genetic structure in those {K}erguelen blue mussels by relating allele frequencies to habitat descriptors. {A} total sample comprising up to 2248 individuals from 35 locations was characterized using two nuclear markers, mac-1 and {G}lu-5, and a mitochondrial marker ({COI}). {T}he frequency data from 9 allozyme loci in 9 of these locations were also reanalyzed. {T}wo other nuclear markers ({EF}bis and {EF}prem's) were monomorphic. {C}ompared to {N}orthern {H}emisphere populations, polymorphism in {K}erguelen blue mussels was lower for all markers except for the exon {G}lu-5. {A}t {G}lu-5, genetic differences were observed between samples from distinct regions ({F}-{CT}=0.077), as well as within two regions, including between samples separated by <500m. {N}o significant differentiation was observed in the {AMOVA} analyses at the two other markers (mac-1 and {COI}). {L}ike mac-1, all allozyme loci genotyped in a previous publication, displayed lower differentiation ({J}ost's {D}) and {F}-{ST} values than {G}lu-5. {P}ower simulations and confidence intervals support that {G}lu-5 displays significantly higher differentiation than the other loci (except a single allozyme for which confidence intervals overlap). {AMOVA} analyses revealed significant effects of the giant kelp {M}acrocystis and wave exposure on this marker. {W}e discuss the influence of hydrological conditions on the genetic differentiation among regions. {I}n marine organisms with high fecundity and high dispersal potential, gene flow tends to erase differentiation, but this study showed significant differentiation at very small distance. {T}his may be explained by the particular hydrology and the carved coastline of the {K}erguelen archipelago, together with spatially variable selection at {G}lu-5.},
  keywords = {{AMOVA} ; environment ; {F}-statistics ; local adaptive differentiation ; mac-1 ; neutral structure ; {KERGUELEN} ; {OCEAN} {AUSTRAL}},
  booktitle = {},
  journal = {{E}cology and {E}volution},
  volume = {5},
  numero = {7},
  pages = {1456--1473},
  ISSN = {2045-7758},
  year = {2015},
  DOI = {10.1002/ece3.1421},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064111},
}