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.authorConteras Herrera, Jorge
dc.contributor.authorRodriguez Valentino, Camilo
dc.contributor.authorLandaeta Díaz, Mauricio
dc.contributor.authorPlaza, Guido
dc.contributor.authorCastillo Silva, Manuel
dc.contributor.authorAlvarado Niño, Mónica
dc.coverage.spatialUniversidad de Valparaíso
dc.date.accessioned2026-10-27T19:05:18Z
dc.date.available2026-10-27T19:05:18Z
dc.date.issued2017
dc.description.abstractLarval growth, age, growth effect and instantaneous mortality were estimated in anchoveta, Engraulis ringens, collected biweekly during the austral winter of 2014 in nearshore waters off Bay of Antofagasta (23°41′W–70°30′S), northern Chile. Through measuring standard length (SL) and sagitta microstructure analysis, it was estimated 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 conspecifics 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.urihttps://repositoriobibliotecas.uv.cl/handle/uvscl/18011
dc.language.isoen
dc.publisherFisheries Oceanography
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.subjectLARVAL GROWTH
dc.subjectNORTHERN CHILE
dc.subjectENGRAULIS RINGENS
dc.subjectCOASTAL HYDROGRAPHIC CONDITIONS
dc.titleGrowth and mortality of larval anchoveta Engraulis ringens, in northern Chile during winter and their relationship with coastal hydrographic conditions
dc.typeArticle
uv.departamentoEscuela de Biología Marina
uv.notageneralTrabajo Titulación Magíster en Oceanografía.

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