@article{fdi:010086881,
  title = {{E}xceptional genetic differentiation at a micro-geographic scale in {A}pistogramma agassizii ({S}teindachner, 1875) from the {P}eruvian {A}mazon : sympatric speciation ?},
  author = {{E}stivals, {G}uillain and {D}uponchelle, {F}abrice and {G}arcia-{D}avila, {C}. and {R}omer, {U}. and {M}ariac, {C}{\'e}dric and {R}enno, {J}ean-{F}ran{\c{c}}ois},
  editor = {},
  language = {{ENG}},
  abstract = {{M}echanisms related to ecological or sexual selection have favoured sympatric speciation events in {A}frican and {C}entral {A}merican lake cichlids. {A}llopatric divergence is the predominant speciation process observed in {A}mazonia, although, to the best of our knowledge, no study to date has attempted to determine whether speciation processes could exist under sympatric conditions in {A}mazonian cichlids. {T}he {A}pistogramma agassizii species complex is an excellent model for investigating the existence of sympatric divergence events in the {A}mazon, as it shares many common life history characteristics with {A}frican {H}aplochromine cichlids in which sympatric speciation mechanisms are well documented. {T}he genetic structure of {A}. agassizii was analysed by genotyping 889 individuals with ten microsatellite loci, collected from 26 sites distributed among small streams in 11 micro-basins in a very small portion of the {P}eruvian {A}mazon. {I}t revealed 22 genetic populations identified according to panmictic criteria ({F}-{IS} estimator) and strongly differentiated: {F}-{ST} estimator (0.034 to 0.356). {S}uch a strong genetic structuring on such small geographical areas has never been demonstrated before in an {A}mazonian fish. {S}everal of these populations may have diverged sympatrically and repeatedly in small stream networks. {T}he results are discussed with respect to divergence processes, including sympatric speciation, which may be associated with the observed genetic structure.},
  keywords = {{M}icrosatellites ; {P}opulation structure ; {S}peciation ; {A}llopatry ; {S}ympatry ; {PEROU} ; {AMAZONIE}},
  booktitle = {},
  journal = {{E}volutionary {B}iology},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[17 ]},
  ISSN = {0071-3260},
  year = {2023},
  DOI = {10.1007/s11692-022-09587-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086881},
}