dc.creator | Avigliano, Esteban | |
dc.creator | Leisen, Mathieu | |
dc.creator | Romero, Rurik | |
dc.creator | Carvalho, Barbara | |
dc.creator | Velasco, Gonzalo | |
dc.creator | Vianna, Marcelo | |
dc.creator | Barra, Fernando | |
dc.creator | Volpedo, Alejandra | |
dc.date.accessioned | 2018-11-28T17:50:06Z | |
dc.date.accessioned | 2022-10-15T12:11:37Z | |
dc.date.available | 2018-11-28T17:50:06Z | |
dc.date.available | 2022-10-15T12:11:37Z | |
dc.date.created | 2018-11-28T17:50:06Z | |
dc.date.issued | 2017-09 | |
dc.identifier | Avigliano, Esteban; Leisen, Mathieu; Romero, Rurik; Carvalho, Barbara; Velasco, Gonzalo; et al.; Fluvio-marine travelers from South America: cyclic amphidromy and freshwater residency, typical behaviors in Genidens barbus inferred by otolith chemistry; Elsevier Science; Fisheries Research; 193; 9-2017; 184-194 | |
dc.identifier | 0165-7836 | |
dc.identifier | http://hdl.handle.net/11336/65462 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4384519 | |
dc.description.abstract | Catfish Genidens barbus is a commercially fished species from the south-western Atlantic Ocean. Overfishing of this species during the last few years has caused a collapse of fisheries and in turn has led to a ban of its exploitation. In order to identify the migratory patterns of this species in four migration corridors from South America, we determined the Sr:Ca and Ba:Ca ratios in otoliths, by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS). Sr:Ca and Ba:Ca ratios range between 0.90 and 9.83 mmol/mol (mean ± standard deviation: 3.86 ± 1.05 mmol/mol) and between 0.00013 and 0.10 mmol/mol (mean ± SD: 0.0094 ± 0.0160 mmol/mol), respectively. Three types of amphidromous and cyclical (annual) patterns that include the use of freshwater, estuarine and marine environments are detected. Resident freshwater fish (6.5%) are found only in Patos Lagoon. Depending on the study site, between 18 and 45% of the analyzed fish population were spawned in freshwater, while the rest were spawned in estuarine waters. The change-point analysis shows a positive correlation between changes in the transects of Sr:Ca and Ba:Ca ratios (r = 0.63, p = 0.0001), whereas the Kruskal-Wallis test shows no significant differences in the number of changes in transects of the Sr:Ca ratio between sampling sites (H = 2.1, p = 0.53). Only for Patos Lagoon the analyses show a significantly higher number of changes for the Ba:Ca ratio (H = 9.1, p = 0.03). The data indicate that the average number of movements among environments is similar between the four corridors. The number of changes of the Ba:Ca ratio appears to be higher and more variable in relation to the Sr:Ca ratio, indicating that the former could be more sensitive to environmental changes. In conclusion, this work describes for the first time, annual amphidromous migrations and dependence on freshwater for different fluvial-marine systems. The understanding of the habitat use will help design species and estuarine-specific management actions with the ultimate goal of recovering fisheries. | |
dc.language | eng | |
dc.publisher | Elsevier Science | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.fishres.2017.04.011 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0165783617301169 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | Anadromy | |
dc.subject | Diadromy | |
dc.subject | Lapilli Otoliths | |
dc.subject | Microchemistry | |
dc.subject | Migration | |
dc.title | Fluvio-marine travelers from South America: cyclic amphidromy and freshwater residency, typical behaviors in Genidens barbus inferred by otolith chemistry | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |