@article{fdi:010084741, title = {{I}mpact of near-future ocean warming and acidification on the larval development of coral-eating starfish {A}canthaster cf. solaris after parental exposure}, author = {{H}ue, {T}. and {C}hateau, {O}. and {L}ecellier, {G}ael and {M}arin, {C}. and {C}oulombier, {N}. and {L}e {D}ean, {L}. and {G}ossuin, {H}. and {A}djeroud, {M}ehdi and {D}umas, {P}ascal}, editor = {}, language = {{ENG}}, abstract = {{O}utbreaks of crown-of-thorns starfish {A}canthaster spp. ({COTS}) are among the most severe local threats to {I}ndo{P}acific coral reefs. {D}espite intensive research, the factors triggering outbreaks remain unclear, though could involve enhanced {COTS} larval fitness due to ocean warming and acidification. {N}evertheless, the effect of these combined stressors has never been tested on larval development and survivorship after parental exposure. {W}e investigated the effects of ocean warming (+2 ? above ambient) and/or acidification (p{H} 7.75) on early {COTS} life-history stages of offspring after exposing the parental generation for 20 weeks to the same treatments. {W}e hypothesized that prior adult exposure would modulate the effects measured in previous studies that omitted this phase, providing a more realistic scenario. {O}ur results showed detrimental effects of elevated temperature towards lower gastrulation success and smaller advanced bipinnaria. {B}oth elevated temperature and lower p{H} produced developmental delay from early to advanced bipinnaria, eventually translating into retarded achievement of mid-late brachiolaria. {O}n average, larvae were significantly bigger in low p{H} treatments, independent of stages. {W}e suggest a link between developmental delay and larger larvae due to acidification, where larvae could be blocked at a developmental stage but continue growing. {F}inally, we found that larval mortality was not impacted by treatments, potentially due to prior adult exposure. {I}f adult {COTS} were able to acclimatize their reproductive physiology in 15 weeks to produce larvae withstanding warming and/or acidification, slow climatic changes might not affect survival at this life stage. {H}owever, the developmental delays displayed might elongate their fragile pelagic phase, potentially decreasing their chances to reach recruitment. {W}e specified the natural spawning peak in {N}ew {C}aledonia, and show caution in directly linking high fertilisation rates with high larval success. {O}ur study reinforces the need to include parental exposure when investigating climate change effects on echinoderm larvae, as punctual stress over single-life stages may produce misleading results.}, keywords = {{C}rown-of-thorns starfish ; {L}arvae ; {A}dult exposure ; {O}cean warming ; {O}cean acidification ; {NOUVELLE} {CALEDONIE} ; {PACIFIQUE}}, booktitle = {}, journal = {{J}ournal of {E}xperimental {M}arine {B}iology and {E}cology}, volume = {548}, numero = {}, pages = {151685 [13 p.]}, ISSN = {0022-0981}, year = {2022}, DOI = {10.1016/j.jembe.2021.151685}, URL = {https://www.documentation.ird.fr/hor/fdi:010084741}, }