@article{fdi:010077817,
  title = {{P}hylogeographical patterns and a cryptic species provide new insights into {W}estern {I}ndian {O}cean giant clams phylogenetic relationships and colonization history},
  author = {{F}auvelot, {C}{\'e}cile and {Z}uccon, {D}. and {B}orsa, {P}hilippe and {G}rulois, {D}. and {M}agalon, {H}. and {R}iquet, {F}. and {A}ndr{\'e}fou{\¨e}t, {S}erge and {B}erumen, {M}. {L}. and {S}inclair-{T}aylor, {T}. {H}. and {G}elin, {P}. and {B}ehivoke, {F}. and ter {P}oorten, {J}. {J}. and {S}trong, {E}. {E}. and {B}ouchet, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}im {T}he unique biodiversity in the {R}ed {S}ea is the result of complex ecological and evolutionary processes driven by {P}leistocene climatic change. {H}ere we investigate the species diversity, phylogenetic relationships and phylogeographical patterns of giant clams in the {W}estern {I}ndian {O}cean ({WIO}) and the {R}ed {S}ea to explore scenarios of marine speciation in this under-studied region. {L}ocation {M}ozambique {C}hannel, {M}adagascar, and the {M}ascarene {I}slands ({WIO}); the {F}arasan {I}slands ({R}ed {S}ea). {T}axon {G}iant clams of the genus {T}ridacna ({C}ardiidae: {T}ridacninae). {M}ethods {G}iant clams were sampled as complete organisms or through underwater biopsies. {N}uclear (28{S}) and mitochondrial (16{S} and {COI}) {DNA} sequences were subjected to {B}ayesian and maximum likelihood analyses to generate a phylogenetic hypothesis for all known species within the genus {T}ridacna. {B}ayesian inference with molecular and fossil calibration was used to infer their colonization history. {R}esults {F}rom the 10 genetically distinct clades recovered from the analyses of 253 sequenced specimens, five distinct {T}ridacna lineages were sampled, three of which were endemics of the {WIO} and the {R}ed {S}ea. {E}ach lineage corresponded to a distinct species, except one grouping the two formerly known {WIO} endemics, {T}. lorenzi and {T}. rosewateri. {T}his lineage clustered with two other well-supported lineages: the {R}ed {S}ea endemic {T}. squamosina, and a previously unrecognized lineage, restricted to the {WIO}, for which we resurrect the long-forgotten name {T}. elongatissima {B}ianconi, 1856. {F}or the two other species sampled ({T}. maxima and {T}. squamosa), contrasting phylogeographical patterns were observed. {M}ain conclusions {O}ur data confirm the validity of the species {T}. rosewateri, a {WIO} endemic genetically indistinguishable from {T}. lorenzi, which should be considered a junior synonym. {T}he phylogenetic placement of the newly resurrected {T}. elongatissima provides insights into the probable origin of {T}. squamosina, which split from its sister species no later than 2 {M}a, likely during {M}iddle {P}leistocene glacial periods. {T}wo scenarios are discussed. {O}ur results also suggest that {T}. maxima invaded the {R}ed {S}ea more recently and that contemporary gene flow between {R}ed {S}ea and {WIO} {T}. maxima is highly restricted. {T}he deep {R}ed {S}ea partition observed in {T}. squamosa suggests a much older divergence and raises the question of a possible cryptic lineage.},
  keywords = {biodiversity ; biogeographical barriers ; cardiidae ; population genetics ; {R}ed {S}ea ; species distribution ; systematics ; {MER} {ROUGE} ; {OCEAN} {INDIEN} {OUEST}},
  booktitle = {},
  journal = {{J}ournal of {B}iogeography},
  volume = {47},
  numero = {5},
  pages = {1086--1105},
  ISSN = {0305-0270},
  year = {2020},
  DOI = {10.1111/jbi.13797},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077817},
}