@article{fdi:010096514, title = {{C}hanges in age-related sexual selection in a humpback whale population recovering from exploitation}, author = {{E}ichenberger, {F}. and {C}arroll, {E}. {L}. and {G}arrigue, {C}laire and {J}arman, {S}. and {S}teel, {D}. {J}. and {R}obbins, {J}. and {R}endell, {L}. and {G}arland, {E}. {C}.}, editor = {}, language = {{ENG}}, abstract = {{W}haling, one of the most extensive and prolonged global commercial hunting operations, pushed many large whales to the brink of extinction. {T}o understand how evolutionary processes may be directly impacted by the consequences of exploitation, we assessed age-dependent population dynamics, reproductive tactics, and reproductive success of 485 male humpback whales ({M}egaptera novaeangliae) from a recovering breeding ground in {N}ew {C}aledonia. {O}ver 19 years (2000-2018), the population age structure switched from a left-skewed, rapidly increasing low-density population toward a more evenly distributed age structure when abundance was higher in later years. {C}oncurrent with the change in population age structure across time, there was a shift in age-related male mating tactics. {M}ost strikingly, during years of higher abundance, the key reproductive tactics of singing and escorting were over-represented by older age categories when compared with the underlying age structure, suggesting age-and/or density-related tactic choice in males. {T}his behavioral shift corresponded with an increase in the relative reproductive success of the oldest males during periods of higher abundance compared with lower abundance. {O}verall, our work suggests that at lower population densities, young males were less constrained by age-related restrictions on reproductive success. {A} reduction of age-related sexual selection could have acted to buffer genetic diversity loss during a time of lower abundance, when this was most critical. {I}ntegrating these changes in the pattern of sexual selection with population dynamics provides critical insights into the evolutionary consequences of exploitation and recovery in long-lived species.}, keywords = {{NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{C}urrent {B}iology}, volume = {36}, numero = {5}, pages = {1115--1127}, ISSN = {0960-9822}, year = {2026}, DOI = {10.1016/j.cub.2026.01.018}, URL = {https://www.documentation.ird.fr/hor/fdi:010096514}, }