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• W2928666789 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 617-618:7-24 (2019) - DOI: https://doi.org/10.3354/meps12948 Vertical distribution, specific gravity, and free amino acids in anchoveta Engraulis ringens eggs under contrasting spawning habitat conditions L. R. Castro1,*, G. Claramunt2, R. Espinoza1, C. Azocar2, S. Soto-Mendoza1, M. C. Krautz1,4, S. Pantoja3 1Laboratorio de Oceanografía Pesquera y Ecología Larval (LOPEL), Departamento de Oceanografía y Centro COPAS Sur Austral, Universidad de Concepción, Concepción, Chile 2Laboratorio de Biología Reproductiva, Universidad Arturo Prat, Iquique, Chile 3Laboratorio de Geoquímica Marina, Departamento de Oceanografía y Centro COPAS Sur Austral, Universidad de Concepción, Concepción, Chile 4Present address: Laboratorio de Investigación en Ecosistemas Acuáticos (LInEA), Universidad de Concepción, Concepción, Chile *Corresponding author: lecastro@udec.cl ABSTRACT: We determined whether maternally influenced early life history traits varied for anchoveta eggs spawned in 2 contrasting environments: off northern (Iquique 23°S) and central (Talcahuano 36°S) Chile. Using eggs collected in the field, we showed that free amino acid contents, specific gravity, and vertical distributions of eggs in the water column changed as eggs developed. Specific gravity correlated negatively with free amino acid content. At the inter-population level, differences were determined in free amino acid egg contents (higher in Iquique), specific egg gravity (lower in Iquique), and vertical egg distributions (shallower in Iquique). Specific egg density along with the seawater density distribution and vertical mixing must be taken into account in both areas to explain the observed vertical distributions, as depicted by different egg buoyancy models. Overall, the results of this study suggest that free amino acids might play a role in egg development, potentially modulating specific gravity and egg position in the water column. The observed vertical distribution of eggs at each location and their changes throughout the season seemed to benefit young offspring, allowing them to avoid layers of stressful conditions especially in northern Chile, where a layer of minimum oxygen concentrations occurs near the surface. KEY WORDS: Anchovies · Humboldt Current · Fish eggs · Vertical distribution · Amino acids · Egg buoyancy Full text in pdf format PreviousNextCite this article as: Castro LR, Claramunt G, Espinoza R, Azocar C, Soto-Mendoza S, Krautz MC, Pantoja S (2019) Vertical distribution, specific gravity, and free amino acids in anchoveta Engraulis ringens eggs under contrasting spawning habitat conditions. Mar Ecol Prog Ser 617-618:7-24. https://doi.org/10.3354/meps12948 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 617-618. Online publication date: May 16, 2019 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2019 Inter-Research." @default.
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• W2928666789 title "Vertical distribution, specific gravity, and free amino acids in anchoveta Engraulis ringens eggs under contrasting spawning habitat conditions" @default.
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