@article{fdi:010094890,
  title = {{C}ontrasting patterns of connectivity between populations of euphotic and mesophotic hydroids in {R}eunion {I}sland support the deep reef refuge hypothesis},
  author = {{O}ry, {D}. and {G}ravier-{B}onnet, {N}. and {C}habanet, {P}ascale and {B}ourmaud, {C}. {A}. {F}. and {B}oissin, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the context of coral reef decline, mesophotic coral ecosystems ({MCE}s, 30-150 m) offer hope for the recovery of degraded euphotic reefs. {T}he {D}eep {R}eef {R}efuge {H}ypothesis ({DRRH}) postulates the potential of mesophotic reefs to reseed euphotic reefs. {T}his hypothesis needs to be further tested by estimating connectivity along the depth gradient. {M}esophotic data are lacking worldwide, particularly in the southwestern {I}ndian {O}cean ({SWIO}). {H}ere, using a total of 2218 samples collected at depths ranging from 10 to 103 m, we estimated the connectivity of 7 hydroid species sampled at euphotic, upper, and lower mesophotic depths around {R}eunion {I}sland using a multi-species comparative framework. {P}opulation genetic analyses using 8-17 microsatellite markers per species (80 markers in total) as well as {B}ayesian inference were performed to estimate population structure and contemporary migration rates to highlight connectivity patterns and directionality of gene flow between depths. {T}he results revealed three main genetic patterns depending on the species: a horizontal stepping stone pattern between areas around the island, a vertical stepping stone pattern between adjacent depths, and a quasi-panmictic pattern. {E}ach species showed some specificity within these patterns, but overall, at least 4 of the 7 species support the assumption of vertical connectivity from the {D}eep {R}eef {R}efuge {H}ypothesis, highlighting the importance of studying multiple species. {T}he existence of vertical connectivity between euphotic and mesophotic depths in the southwestern {I}ndian {O}cean confirms the importance of mesophotic coral ecosystems for conservation efforts and our global understanding of coral reef ecosystem dynamics.},
  keywords = {cryptic species ; isolation by distance ; microsatellite marker ; population genetics ; southwestern {I}ndian {O}cean ; vertical connectivity ; {REUNION} ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{M}olecular {E}cology},
  volume = {[{E}arly access]},
  numero = {},
  pages = {e70089 [21 p.]},
  ISSN = {0962-1083},
  year = {2025},
  DOI = {10.1111/mec.70089},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094890},
}