@article{fdi:010079360, title = {{I}nfluence of larval and juvenile life history on age at first maturity in two tropical amphidromous fish species}, author = {{L}agarde, {R}. and {T}eichert, {N}. and {G}rondin, {H}. and {H}ue, {T}. and {G}audin, {P}. and {P}onton, {D}ominique}, editor = {}, language = {{ENG}}, abstract = {{T}his study investigates how age at first maturity of two tropical amphidromous species {S}icyopterus lagocephalus ({P}allas, 1770) and {C}otylopus acutipinnis ({G}uichenot, 1863) varies in relation to their larval and juvenile life history. {R}eproductive stage was estimated based on histological observation of ovaries of more than 200 females of each species caught monthly over 1 year. {T}he age of fish was estimated by interpreting the daily increments deposited on otoliths during the oceanic larval phase, and the juvenile phase in the river. {T}he age at first maturity was approximately 9 months for {S}. lagocephalus and 7 months for {C}. acutipinnis, corresponding to approximately 70-130 and 90-130 days after they returned to freshwater respectively. {F}or both species, the time spent in freshwater before maturity was significantly influenced by the duration of the pelagic larval stage at sea ({PLD}) and the season of return in freshwater. {I}ndividuals with a long {PLD}, or returning in freshwater during the warmer season, maturated faster once in freshwater. {T}his reproductive advantage may minimise the risk of extirpation due to catastrophic events at each generation and thus probably benefits amphidromous species living in very unpredictable tropical rivers.}, keywords = {{C}otylopus acutipinnis ; {D}iadromy ; {G}obiidae ; reproductive strategy ; {S}icyopterus lagocephalus ; {REUNION} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{E}cology of {F}reshwater {F}ish}, volume = {29}, numero = {1}, pages = {[11 p.]}, ISSN = {0906-6691}, year = {2020}, DOI = {10.1111/eff.12488}, URL = {https://www.documentation.ird.fr/hor/fdi:010079360}, }