@article{fdi:010079346, title = {{T}he {A}mazonian dwarf cichlid {A}pistogramma agassizii ({S}teindachner, 1875) is a geographic mosaic of potentially tens of species : conservation implications}, author = {{E}stivals, {G}uillain and {D}uponchelle, {F}abrice and {R}omer, {U}. and {G}arcia-{D}avila, {C}. and {A}irola, {E}. and {D}eleglise, {M}. and {R}enno, {J}ean-{F}ran{\c{c}}ois}, editor = {}, language = {{ENG}}, abstract = {{A}ssessing biodiversity and understanding how it works is a prerequisite for species conservation. {T}he {A}mazon basin is one of the main biodiversity hotspots where fish are heavily exploited for ornamental purposes. {T}he ornamental trade heavily exploits the genus{A}pistogramma, which is one of the most species-rich among {N}eotropical cichlids with 94 formally described species. {T}his number is certainly underestimated owing to the limitations of conventional taxonomy, which is still too often based solely on morphological criteria and sometimes on few individuals. {M}ost species of this genus have a high degree of endemism and are highly prized on the ornamental market, which could put them at risk. {A} few species are supposed to have extensive distributions, and in particular{A}pistogramma agassizii, present from the {A}mazon estuary up to the {U}cayali and {M}aranon rivers in {P}eru. {T}his study assessed the taxonomic status of 1,151 specimens of{A}. agassiziicollected from 35 sites around {I}quitos in the {P}eruvian {A}mazon. {O}n the basis of molecular analyses (nuclear and mitochondrial {DNA}) and mate choice experiments, at least three biological species within the nominal{A}. agassiziiwere evidenced in the sampling area, which is extremely small compared with the known distribution of the species as initially described. {A}ccording to the molecular calibrations, these three species would have diverged during the {P}lio-{P}leistocene. {T}wo of them seem to be endemic from small sub-basins, one from the {N}anay {R}iver and the other from the {A}payacu/{A}mpiyacu systems. {A} possible scenario that may explain the evolutionary history of these species is proposed. {T}he conservation implications of these results on the estimation of the diversity of{A}. agassizii, of{A}pistogrammaspecies in general, and of other {A}mazonian cichlids are discussed.}, keywords = {biodiversity ; biogeography ; fish ; fishing ; floodplain ; genetics ; river ; {PEROU} ; {AMAZONIE} ; {UCAYALI} {COURS} {D}'{EAU} ; {MARANON} {COURS} {D}'{EAU} ; {AMAZONE} {COURS} {D}'{EAU} ; {NANAY} {COURS} {D}'{EAU}}, booktitle = {}, journal = {{A}quatic {C}onservation : {M}arine and {F}reshwater {E}cosystems}, volume = {30}, numero = {8}, pages = {1521--1539}, ISSN = {1052-7613}, year = {2020}, DOI = {10.1002/aqc.3373}, URL = {https://www.documentation.ird.fr/hor/fdi:010079346}, }