Bibliographic citations
Galarza, S., (2023). Distribución espacial de los estadios juvenil y adulto que conforman el stock norte-centro de la anchoveta peruana (Engraulis ringens, J. 1842) [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/6552
Galarza, S., Distribución espacial de los estadios juvenil y adulto que conforman el stock norte-centro de la anchoveta peruana (Engraulis ringens, J. 1842) []. PE: Universidad Nacional Agraria La Molina; 2023. https://hdl.handle.net/20.500.12996/6552
@misc{renati/1114053,
title = "Distribución espacial de los estadios juvenil y adulto que conforman el stock norte-centro de la anchoveta peruana (Engraulis ringens, J. 1842)",
author = "Galarza Tirado, Segundo Gian Paul",
publisher = "Universidad Nacional Agraria La Molina",
year = "2023"
}
The Peruvian anchovy is the most important species in the Humboldt Current ecosystem, both ecologically and socio-economically, as it supports the most important fishery in Peru and one of the largest in the world. Fishery resources such as anchoveta are naturally dynamic in space and time, and it is necessary to understand this dynamism in order to strengthen conservation measures. A widely used tool to describe the spatio-temporal dynamics of fishery resources are spatial indicators. The objective of this study was to evaluate the spatial behavior of the juvenile and adult developmental stages that make up the North-Central stock of anchoveta, using indicators and multivariate statistical tests. Spatial indicators were used to synthesize the spatial location of juveniles and adults, spatial occupancy, and statistical dispersion. Multivariate statistics were used to identify distribution scenarios associated with environmental conditions and season. For this purpose, georeferenced size data collected during sixty assessment cruises conducted by the Instituto del Mar del Peru (IMARPE) between 1996 and 2022 were used. The results showed that anchoveta adults are homogeneously distributed (many areas of similar abundance), while juveniles are more heterogeneously distributed (few areas of high abundance). Multivariate statistical tests identified five spatial distribution scenarios: i) three scenarios for juveniles reflecting average, unfavorable and favorable conditions, and ii) two scenarios for adults reflecting warm and cold conditions. This study adds to the knowledge of the spatio-temporal dynamics of juveniles and adults in the north-central stock of Peruvian anchovy, so that the use of spatial indicators can be considered as an auxiliary tool for population monitoring.
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