@article{PAR00012780, title = {{D}iet shift of {R}ed {B}elly {P}acu {P}iaractus brachypomus ({C}uvier, 1818) ({C}haraciformes : {S}errasalmidae), a {N}eotropical fish, in the {S}epik-{R}amu river basin, {P}apua {N}ew {G}uinea}, author = {{C}orrea, {S}. {B}. and {B}etancur, {R}. and {M}{\'e}rona, {B}ernard de and {A}rmbruster, {J}. {W}.}, editor = {}, language = {{ENG}}, abstract = {{I}ntroduction of fish species is a globally widespread practice that causes losses of native species and homogenization of diversity within and across continents. {D}iet assessments are important tools to depict the ecological function of species introduced into novel ecosystem and possible direct and indirect ecological effects. {I}n this study, we compare the diet of {P}iaractus brachypomus, a mainly frugivorous {N}eotropical fish, introduced into the {S}epik-{R}amu {R}iver {B}asin ({P}apua {N}ew {G}uinea) nearly two decades ago, to that of similar size individuals from {N}eotropical populations in the {A}mazon and {O}rinoco {R}iver basins ({S}outh {A}merica). {I}n contrast to native populations that feed mainly on terrestrial plants and invertebrates, the diet of introduced {P}. brachypomus is mainly composed of fish remains and aquatic plants, while terrestrial plants are frequently consumed but in relatively smaller amounts. {T}hese findings show that {P}. brachypomus has an inherently plastic diet that can be adjusted when displaced to a novel geographic area. {W}hile trophic plasticity increases the likelihood of a species to establish breeding populations after its introduction, it also reduces our ability to predict negative effects on native species.}, keywords = {{E}xotic fish ; {F}ruit-eating fish ; {S}pecies introduction ; {R}ed {B}elly {P}acu ; {S}tocking ; {PAPOUASIE} {NOUVELLE} {GUINEE}}, booktitle = {}, journal = {{N}eotropical {I}chthyology}, volume = {12}, numero = {4}, pages = {827--833}, ISSN = {1679-6225}, year = {2014}, DOI = {10.1590/1982-0224-20130212}, URL = {https://www.documentation.ird.fr/hor/{PAR}00012780}, }