@article{fdi:010066195, title = {{V}ariations in reproductive strategy of the silver {A}rowana, {O}steoglossum bicirrhosum {C}uvier, 1829 from four sub-basins of the {P}eruvian {A}mazon}, author = {{D}uponchelle, {F}abrice and {A}rce, {A}. {R}. and {W}aty, {A}. and {G}arcia-{V}asquez, {A}. and {R}enno, {J}ean-{F}ran{\c{c}}ois and {C}hu-{K}oo, {F}. and {G}arcia-{D}avila, {C}. and {V}argas, {G}. and {T}ello, {S}. and {O}rtiz, {A}. and {P}inedo, {R}. and {V}asquez, {R}. {M}. and {N}unez {R}odriguez, {J}esus}, editor = {}, language = {{ENG}}, abstract = {{T}he aim of this study was to assess the variability of reproductive characteristics of the silver {A}rowana, {O}steoglossum bicirrhosum, in four sub-basins of the {P}eruvian {A}mazon: the {A}mazonas, {U}cayali, {N}apo and {P}utumayo rivers. {A}n illustrated, detailed gonadal maturation scale is proposed for a clearer determination of the reproductive status of male and female {A}rowana. {T}he breeding season occurred during the dry season and early rising waters in the {A}mazonas and {U}cayali, whereas it was restricted to the dry season in the {N}apo and {P}utumayo. {A} same female can reproduce more than once during the breeding season. {A}ge at maturity was reached during the second year, at sizes varying between 43-45cm for males and 46-50cm {SL} for females. {I}mportant variations in fecundity were observed between fish of the four sub-basins, whereas mean oocytes diameter and mass did not vary significantly, suggesting differences in reproductive investment. {T}ogether with previously reported variations of growth patterns in the same sub-basins, these results suggest the existence of distinct populations in the {P}eruvian {A}mazon, with important consequences for management and conservation, but also for future aquaculture development programs.}, keywords = {{PEROU} ; {AMAZONIE}}, booktitle = {{P}roceedings of the 4th {I}nternational {C}onference of the "{R}esearch {N}etwork on {A}mazonian {I}chthyofauna" ({RIIA})}, journal = {{J}ournal of {A}pplied {I}chthyology}, volume = {31}, numero = {no sp{\'e}cial {S}4}, pages = {19--30}, ISSN = {0175-8659}, year = {2015}, DOI = {10.1111/jai.12973}, URL = {https://www.documentation.ird.fr/hor/fdi:010066195}, }