Boletín de Investigaciones Marinas y Costeras

Vol. 54 Núm. 2 (2025)
Articulos de investigación

Estimación de tallas de anchoveta (Engraulis ringens) mediante ecosonda en áreas pesqueras de difícil acceso en la Región de Atacama, Chile

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  • Luis Angel La Cruz Aparco,
  • Cristián Henríquez-Pastene,
  • Adrian Ibieta,
  • Francisco Leiva-Dietz
Luis Angel La Cruz Aparco
Instituto de Fomento Pesquero
Cristián Henríquez-Pastene
Instituto de Fomento Pesquero
Adrian Ibieta
Instituto de Fomento Pesquero
Francisco Leiva-Dietz
Instituto de Fomento Pesquero
DOI: https://doi.org/10.25268/bimc.invemar.2025.54.2.1321

Publicado 2025-07-01

Palabras clave

  • Pelágico,
  • anchoveta,
  • pesquerías,
  • monitoreo,
  • ecosonda

Cómo citar

1.
La Cruz Aparco LA, Henríquez-Pastene C, Ibieta A, Leiva-Dietz F. Estimación de tallas de anchoveta (Engraulis ringens) mediante ecosonda en áreas pesqueras de difícil acceso en la Región de Atacama, Chile. Bol. Investig. Mar. Costeras [Internet]. 1 de julio de 2025 [citado 4 de julio de 2025];54(2):70-89. Disponible en: https://boletin.invemar.org.co/ojs/index.php/boletin/article/view/1321

Derechos de autor 2025 Luis Angel La Cruz Aparco, Cristián Henríquez-Pastene, Adrian Ibieta, Francisco Leiva-Dietz

Creative Commons License

Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.

Resumen

Este estudio explora el uso de métodos hidroacústicos para estimar la distribución de las longitudes de anchovetas, ofreciendo una alternativa a los métodos tradicionales de muestreo biológico. Se recolectaron datos acústicos utilizando dos algoritmos: Single Target y Tracked Target, junto con un modelo de conversión de TS a longitud específico para anchoveta. Los resultados mostraron que el algoritmo Single Target estimó tamaños de 8,5 a 16 cm, con una moda de 12,0 cm, mientras que el algoritmo Tracked Target identificó un rango de 9 a 14 cm, con una moda de 11,5 cm. Las anchovetas juveniles representaron el 45,8% y el 51,2% de la población en cada algoritmo. Además, la profundidad de los ecos osciló entre 3,92 y 43,95 m, lo que sugiere que las anchovetas de mayor longitud tienden a habitar zonas costeras más profundas, posiblemente como una adaptación fisiológica a estos ambientes. El estudio demuestra la efectividad de la hidroacústica para estimar las tallas de peces, especialmente en áreas donde el muestreo tradicional es inaccesible o difícil de llevar a cabo. Este enfoque contribuye a comprender la dinámica de las poblaciones de peces y abre la puerta a futuros
estudios.

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