@article{fdi:010086111, title = {{T}umors alter life history traits in the freshwater cnidarian, {H}ydra oligactis}, author = {{B}outry, {J}. and {T}issot, {S}. and {M}ekaoui, {N}. and {D}ujon, {A}. and {M}eliani, {J}. and {H}amede, {R}. and {U}jvari, {B}. and {R}oche, {B}enjamin and {N}edelcu, {A}. {M}. and {T}okolyi, {J}. and {T}homas, {F}.}, editor = {}, language = {{ENG}}, abstract = {{A}lthough tumors can occur during the lifetime of most multicellular organisms and have the potential to influence health, how they alter life-history traits in tumor-bearing individuals remains poorly documented. {T}his question was explored using the freshwater cnidarian {H}ydra oligactis, a species sometimes affected by vertically transmitted tumors. {W}e found that tumorous polyps have a reduced survival compared to healthy ones. {H}owever, they also displayed higher asexual reproductive effort, by producing more often multiple buds than healthy ones. {A} similar acceleration is observed for the sexual reproduction (estimated through gamete production). {B}ecause tumoral cells are not transmitted through this reproductive mode, this finding suggests that hosts may adaptively respond to tumors, compensating the expected fitness losses by increasing their immediate reproductive effort. {T}his study supports the hypothesis that tumorigenesis has the potential to influence the biology, ecology, and evolution of multicellular species, and thus should be considered more by evolutionary ecologists.}, keywords = {}, booktitle = {}, journal = {i{S}cience}, volume = {25}, numero = {10}, pages = {105034 [17 p.]}, year = {2022}, DOI = {10.1016/j.isci.2022.105034}, URL = {https://www.documentation.ird.fr/hor/fdi:010086111}, }