Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru

Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru

In this paper we analyze the standardized monthly anomalies of time series of the gonadosomatic index (GSI, 1986–2008), spawning fraction (SF, estimated by histological analysis of gonads, 1992–2008), and condition factor (1986–2008) of the Peruvian anchovy Engraulis ringens. Statistical analysis us...

Description complète

Enregistré dans:
Détails bibliographiques
Auteurs principaux: Mori, J, Buitrón, B, Perea, A, Peña, C, Espinoza, C
Format: info:eu-repo/semantics/article
Langue:eng
Publié: Iniversidad Autónoma de Baja California 2011
Accès en ligne:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1872
Tags: Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
id repositorioinstitucional-20.500.12930-7447
record_format dspace
spelling repositorioinstitucional-20.500.12930-74472023-05-09T14:30:50Z Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru Variabilidad interanual en la estrategia reproductiva de la anchoveta peruana en la región norte-centro del litoral del Perú Mori, J Buitrón, B Perea, A Peña, C Espinoza, C In this paper we analyze the standardized monthly anomalies of time series of the gonadosomatic index (GSI, 1986–2008), spawning fraction (SF, estimated by histological analysis of gonads, 1992–2008), and condition factor (1986–2008) of the Peruvian anchovy Engraulis ringens. Statistical analysis using filters showed, according to their mode of variability, the existence of three distinct periods for GSI (1986–1989, 1990–2000, and 2001–2008) and two for SF (1995–2001 and 2002–2008). Based on this, we built monthly GSI and SF patterns for each period, which showed marked and prolonged seasonal reproductive activity. The patterns found have been interpreted as changes in reproductive strategy. The condition factor showed no significant differences throughout the study period. We discuss changes in these periods and their implications for fisheries management measures.  En el presente trabajo se analizan las anomalías mensuales estandarizadas de las series temporales del índice gonadosomático (IGS, de 1986 a 2008), la fracción desovante (FD, estimada con análisis histológicos de gónadas de 1992 a 2008) y el factor de condición (de 1986 a 2008) de la anchoveta peruana, Engraulis ringens. El análisis mediante filtros estadísticos mostró, de acuerdo a sus modos de variabilidad, la existencia de tres periodos distintos para el IGS (1986–1989, 1990–2000 y 2001–2008) y dos para la FD (1995–2001 y 2002– 2008). Sobre esta base se construyeron patrones a escala mensual de IGS y FD correspondientes a cada periodo, los cuales mostraron una marcada estacionalidad y prolongada actividad reproductiva. Los distintos patrones encontrados se interpretan como cambios de estrategia reproductiva. El factor de condición no registró diferencias significativas a lo largo del periodo estudiado. Se discuten los cambios producidos dentro de estos periodos como parte de la estrategia reproductiva de la anchoveta y sus implicaciones en las medidas de manejo pesquero. 2011-09-02 2021-06-03T03:55:20Z 2021-06-03T03:55:20Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1872 10.7773/cm.v37i4B.1872 https://hdl.handle.net/20.500.12930/7447 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1872/1779 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 37 No. 4B (2011); 513-525 Ciencias Marinas; Vol. 37 Núm. 4B (2011); 513-525 2395-9053 0185-3880
institution Repositorio Institucional
collection DSpace
language eng
description In this paper we analyze the standardized monthly anomalies of time series of the gonadosomatic index (GSI, 1986–2008), spawning fraction (SF, estimated by histological analysis of gonads, 1992–2008), and condition factor (1986–2008) of the Peruvian anchovy Engraulis ringens. Statistical analysis using filters showed, according to their mode of variability, the existence of three distinct periods for GSI (1986–1989, 1990–2000, and 2001–2008) and two for SF (1995–2001 and 2002–2008). Based on this, we built monthly GSI and SF patterns for each period, which showed marked and prolonged seasonal reproductive activity. The patterns found have been interpreted as changes in reproductive strategy. The condition factor showed no significant differences throughout the study period. We discuss changes in these periods and their implications for fisheries management measures. 
format info:eu-repo/semantics/article
author Mori, J
Buitrón, B
Perea, A
Peña, C
Espinoza, C
spellingShingle Mori, J
Buitrón, B
Perea, A
Peña, C
Espinoza, C
Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
author_facet Mori, J
Buitrón, B
Perea, A
Peña, C
Espinoza, C
author_sort Mori, J
title Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
title_short Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
title_full Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
title_fullStr Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
title_full_unstemmed Interannual variability of the reproductive strategy of the Peruvian anchovy off northern-central Peru
title_sort interannual variability of the reproductive strategy of the peruvian anchovy off northern-central peru
publisher Iniversidad Autónoma de Baja California
publishDate 2011
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1872
_version_ 1792610097044652032

Documents similaires