Growth and mortality of larval anchoveta Engraulis ringens, in northern Chile during winter and their relationship with coastal hydrographic conditions

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dc.contributor.advisorHormazábal Fritz, Samuel
dc.contributor.authorHenríquez Pastene, Cristián Alfredo
dc.coverage.spatialValparaíso
dc.date.accessioned2026-10-26T14:45:05Z
dc.date.available2026-10-26T14:45:05Z
dc.date.issued2016
dc.description.abstractLarval growth, age, growth effect and instantaneous mortality were estimated inanchoveta, Engraulis ringens, collected biweekly during the austral winter of 2014 innearshore waters off Bay of Antofagasta (23°410 W –70°300 S), northern Chile.Through measuring standard length (SL) and sagitta microstructure analysis, it wasestimated that the growth rate of E. ringens larvae decreased from June (0.85 mm day 1) to August (0.50 mm day 1). However, the water temperature was homogeneous during the sampling dates (14.6, 15.2, 14.4, and 14.6°C), suggesting that the decelerating larval growth was not linked to changes in sea temperature. Additionally, larvae with slow growth have larger otoliths compared with con specifics with fast growth (growth effect). Larval mortality rates tended to decrease until the middle of July (0.18 per day) but increased to 0.25 per day in early August, which coincided with lower food availability (i.e., chlorophyll-a, 2.7–5.6 mg m 3) and a high occurrence of smaller larvae (1.58–11.5 mm). Partial least squares analysis indicates low covariance between the biological and oceanographic variables (PLS: 11.71%), suggesting that other factors, such as parental effects, may explain the abrupt decrease in the larval growth rates.
dc.facultadFacultad de Ciencias del Mar y Recursos Naturales
dc.identifier.doihttps://doi.org/10.1111/fog.12219
dc.identifier.urihttps://repositoriobibliotecas.uv.cl/handle/uvscl/17977
dc.language.isoen
dc.publisherUniversidad de Valparaíso
dc.rightsAtribución-NoComercial-CompartirIgual 3.0 Chile (CC BY-NC-SA 3.0 CL)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/cl/
dc.subjectENGRAULIS RINGENS
dc.subjectGROWTH EFFECT
dc.subjectNORTHERN CHILE
dc.subjectOTOLITH
dc.titleGrowth and mortality of larval anchoveta Engraulis ringens, in northern Chile during winter and their relationship with coastal hydrographic conditions
dc.typeArticle
uv.catalogadorJCR
uv.departamentoEscuela de Biología Marina
uv.notageneralTrabajo títulación Magíster en Oceanografía.

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