@article{fdi:010091276, title = {{S}pawning window and fecundity in three {A}croporid corals from the environmentally variable semi-enclosed lagoon of {B}ourak{\'e}}, author = {{A}lessi, {C}inzia and {R}andall, {C}. {J}. and {D}umas, {M}. and {L}emonnier, {H}. and {R}odolfo-{M}etalpa, {R}iccardo}, editor = {}, language = {{ENG}}, abstract = {{T}he gametogenic cycle in broadcast spawning corals takes several months, with oogenesis culminating in synchronized maturation when seawater temperatures rise. {T}emperature is known for governing reproductive seasonality, yet little is known about how multiple stressors may affect spawning timing. {T}he semi-enclosed lagoon of {B}ourak{\'e} in {N}ew {C}aledonia is subjected to high fluctuations in seawater temperature, p{H}, salinity, and oxygen, representing an ideal playground to explore possible effects of extreme environmental variability on coral gametogenesis. {H}ere, the spawning window and fecundity metrics (i.e., colony- and polyp-level fecundity, and egg size) of {A}cropora tenuis, {M}ontipora digitata, and {M}. stellata from {B}ourak{\'e} were compared with four reference sites located at variable distances from {B}ourak{\'e} {R}esults suggest that {B}ourak{\'e} and its nearby control site largely spawned synchronously, but there was a spawning asynchrony between {B}ourak{\'e} and the sites further south, in all three species. {I}nterestingly, no reduction in the number of eggs per fecund polyp or number of fecund polyps was observed in {B}ourak{\'e} compared with the reference sites, in any species. {H}owever, {A}. tenuis and {M}. digitata had smaller eggs in {B}ourak {\'e} compared to reference sites, with possible repercussions for coral fitness. {I}n conclusion, some reproductive traits are maintained in coral species inhabiting a highly variable environment, but smaller gametes may alter population recovery processes. {F}urthermore, since our data are limited to 2 yrs of observations, spawning synchronization between {B}ourak{\'e} and its surroundings warrant continued investigation to determine whether coral colonies from this area harbor traits that increase fitness under future climate scenarios.}, keywords = {{E}xtreme corals ; {G}ametogenesis ; {S}pawning synchrony ; {F}ecundity ; {NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{C}oral {R}eefs}, volume = {43}, numero = {}, pages = {1469--1482}, ISSN = {0722-4028}, year = {2024}, DOI = {10.1007/s00338-024-02551-3}, URL = {https://www.documentation.ird.fr/hor/fdi:010091276}, }