White mullet <scp><i>Mugil curema</i></scp> population structure from Mexico and Brazil revealed by otolith chemistry

Avigliano, Esteban; Ibáñez, Ana L.; Fabré, Nidia Noemí; Fortunato, Roberta Callicó; Méndez, Ana; Pisonero, Jorge; Volpedo, Alejandra V.

doi:10.1111/jfb.14500

Cited by 21 publications

(3 citation statements)

References 92 publications

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“…All data were tested for normality using the Shapiro-Wilk test [ 56 ], and for homoscedasticity using Levene’s test prior to using parametric or non-parametric tests. Due to the absence of normality in trace element concentrations, differences in measurement precision and accuracy between the laboratories were compared using the Wilcoxon test.…”

Section: Methodsmentioning

confidence: 99%

Natal origin and migration pathways of Mekong catfish (Pangasius krempfi) using strontium isotopes and trace element concentrations in environmental water and otoliths

et al. 2021

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To improve our knowledge of the migration pathway of a highly threatened fish species along the Mekong River, strontium isotope ratios (87Sr/86Sr) and 18 trace element concentrations were measured in the water and in the otoliths of an anadromous catfish, Pangasius krempfi, to infer its natal origin and potential migration pathways. Water was sampled at 18 locations along the mainstream, tributaries and distributaries of the Mekong River. To check for accuracy and precision, measurements of the 87Sr/86Sr ratios and trace element concentrations were then compared in two laboratories that use different analytical methods. Differences in trace element concentrations between locations were not significant and could not, therefore, be used to discriminate between migration pathways. However, the Mekong mainstream, tributaries and distributaries could all be discriminated using Sr isotopes. The 87Sr/86Sr profiles recorded in P. krempfi otoliths showed that there were three contingents with obligate freshwater hatching and variable spawning sites along the Mekong mainstream, from Phnom Penh (Cambodia) to Nong Khai (Thailand) or further. After hatching, the fish migrated more or less rapidly to the Mekong Delta and then settled for most of their lifetime in brackish water. Spawning habitats and migration routes may be threatened by habitat shifts and the increasing number of hydropower dams along the river, especially the contingents born above Khone Falls (Laos). The conservation of P. krempfi, as well as other migratory fish in the Mekong River, requires agreements, common actions and management by all countries along the Mekong River. This study highlighted the importance of using both Sr/Ca and 87Sr/86Sr ratios to understand life history of anadromous fishes as the 87Sr/86Sr ratio in the water was shown to be less effective than the Sr/Ca ratio in identifying movements between different saline areas.

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Section: Methodsmentioning

confidence: 99%

Natal origin and migration pathways of Mekong catfish (Pangasius krempfi) using strontium isotopes and trace element concentrations in environmental water and otoliths

et al. 2021

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“…6 Typically, nanosecond pulsed laser ablation units (e.g., Nd:YAG and ArF* excimer) operated in the UV region have been employed for the ablation of otoliths at micrometer scale (e.g., laser spot size B = 10-100 s mm). 8,9 Shorter pulsed duration lasers, such as femtosecond lasers (fs-LA), are considered to generate laser-induced aerosols with a broad monomodal particle size distribution in the nanometer range (nano-sized agglomerates in the range of 50 up to 250 nm), resulting in higher ion signals and more stable elemental ratios when analyzed by ICP-MS. 10,11 Nevertheless, it is considered that reduced elemental fractionation during the fs laser ablation might still be present. 12 Multi-elemental ratios (e.g., Sr/Ca, Mg/Ca, Ba/Ca or Na/Ca) or isotopic (e.g., 87 Sr/ 86 Sr) data from otolith analyses can be provided by different LA-ICP-MS systems including quadrupolebased (QMS), sector-eld-based (SFMS), or multicollector-based (MC-MS) mass spectrometers.…”

Section: Introductionmentioning

confidence: 99%

“…, laser spot size ∅ = 10–100 s μm). 8,9 Shorter pulsed duration lasers, such as femtosecond lasers (fs-LA), are considered to generate laser-induced aerosols with a broad monomodal particle size distribution in the nanometer range (nano-sized agglomerates in the range of 50 up to 250 nm), resulting in higher ion signals and more stable elemental ratios when analyzed by ICP-MS. 10,11 Nevertheless, it is considered that reduced elemental fractionation during the fs laser ablation might still be present. 12…”

Section: Introductionmentioning

confidence: 99%

Fast and high spatially resolved multielemental mapping of otoliths using IR&UV-femtosecond laser ablation-ICP-TOFMS

Pisonero,

Avigliano,

Soto-Gancedo

et al. 2024

J. Anal. At. Spectrom.

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Past and recent connectivity of white mullet between the Gulf of Mexico and the Mexican Pacific inferred through sequences of the gene cytochrome c oxidase I and microsatellites

et al. 2021

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Cytochrome c oxidase I (COI) and microsatellite markers were used to evaluate the genetic structure, connectivity, and evolutionary history of white mullet (Mugil curema), along locations in the Atlantic, Gulf of Mexico (GoM), and Pacific coasts. DNA sequences of 125 COI were obtained and identified as Mugil curema with 100% identification and coverage. COI sequences resulted in the formation of two haplogroups, one in the GoM along with a location in Oaxaca named Huave System (HU), belonging to the Pacific coast, and another one in Mexican Pacific (MP, with exception of the former). The evolutionary history of both haplogroups concur with the closure of the Isthmus of Panama (1.5 My). The MP haplogroup showed a subdivision in a northern group and a southern group, with a separation of 0.4 My that could be the result of a combination of Pleistocene factors and oceanographic changes following the closure of the Isthmus of Panama. Furthermore, microsatellites result also revealed that the GoM/HU haplogroup has larger genetic distances with other samples from the MP than with those of the GoM; this result was confirmed with the individual allocation analysis. The presence of Huave System mullets within the GoM lineage may be due to the confinement of individuals in this locality, that have retained ancestral polymorphisms of the GoM sister lineage, or to a recent connection. The genetic similarity of fish populations in both coasts of Mexico is a completely new report on a species that recently connected the Pacific and Atlantic coasts.

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White mullet Mugil curema population structure from Mexico and Brazil revealed by otolith chemistry

Cited by 21 publications

References 92 publications

Natal origin and migration pathways of Mekong catfish (Pangasius krempfi) using strontium isotopes and trace element concentrations in environmental water and otoliths

Natal origin and migration pathways of Mekong catfish (Pangasius krempfi) using strontium isotopes and trace element concentrations in environmental water and otoliths

Fast and high spatially resolved multielemental mapping of otoliths using IR&UV-femtosecond laser ablation-ICP-TOFMS

Past and recent connectivity of white mullet between the Gulf of Mexico and the Mexican Pacific inferred through sequences of the gene cytochrome c oxidase I and microsatellites

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