@article{fdi:010088118, title = {{S}trontium isotope mapping and its application to study the fish life history ({S}alminus brasiliensis) in semi-fragmented rivers ({L}a {P}lata {B}asin, {S}outh {A}merica)}, author = {{A}vigliano, {E}. and {C}hung, {M}. {T}. and {P}ouilly, {M}arc and {H}uang, {K}. {F}. and {C}asalinuovo, {M}. and {D}ominino, {J}. and {S}ilva, {N}. and {S}anchez, {S}. and {F}acetti, {J}. {F}. and {V}olpedo, {A}. {V}.}, editor = {}, language = {{ENG}}, abstract = {{S}alminus brasiliensis is one of the largest and most important commercial and sporting fish species in {S}outh {A}merica, of which little is known about its habitat use, especially in semi-fragmented rivers. {T}he aims of this study were to expand the water 87{S}r/86{S}r baseline of the {L}a {P}lata {B}asin, and to study the migratory patterns of {S}. brasiliensis from {P}aran ' a dam-free stretch and a representative tributary semi-fragmented using otolith isotopic chemistry. {W}ater samples were collected at 10 sites on the upper {P}aran ' a {R}iver and two sites on the middle and lower {C}arcaraƱa {B}asin (tributary of the lower {P}aran ' a {R}iver). {F}ourteen fish were caught in the upper {P}aran ' a {R}iver and 13 in two sites of the middle and lower {C}arcaran similar to ' a {B}asin. 87{S}r/86{S}r was measured in water and otolith core-to-edge transect by {MC}-{ICPMS} and {LA}-{MC}-{ICPMS}, respectively. {W}ater results were incorporated into a dataset with 53 other sampling points from the {L}a {P}lata {B}asin and subjected to a cluster analysis, which resulted in nine differentiable chemical signatures. {D}iscriminant analysis confirmed the presence of at least eight contrasting isotopic signals. {B}ased on the otolith core 87{S}r/86{S}r, four individuals from the upper {P}aran ' a {R}iver were classified as originating from {P}araguay sub-basin, while the rest were assigned to {P}aran ' a {R}iver. {A}ll fish from the {C}arcaran similar to a ' sub-basin were classified as originating from the {P}aran ' a {R}iver, except two individuals which were assigned to the {C}arcaran similar to ' a sub-basin. {R}esults indicated that the fish run up the {C}arcaran similar to ' a sub-basin overcoming up to three open spillways, and could live there for years and even reproduce. {H}owever, the {P}aran ' a {R}iver had the largest contribution to the fish caught in both the upper {P}aran ' a {R}iver and the {C}arcaran similar to ' a sub-basin.}, keywords = {{H}abitat use ; {H}ydrogeology ; {O}tolith microchemistry ; {M}igration ; {F}reshwater fish ; {N}atural tag ; {AMERIQUE} {DU} {SUD} ; {LA} {PLATA} {BASSIN}}, booktitle = {}, journal = {{F}isheries {R}esearch}, volume = {265}, numero = {}, pages = {106741 [10 p.]}, ISSN = {0165-7836}, year = {2023}, DOI = {10.1016/j.fishres.2023.106741}, URL = {https://www.documentation.ird.fr/hor/fdi:010088118}, }