Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific

Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific

The Peruvian moonfish (Selene peruviana) is an important fisheries resource that is landed in the main fishing harbors of Ecuador. At the local level, little information is available regarding the biology of this species, which hinders the development of management plans. The present study evaluates...

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Autores principales: Mendoza-Nieto, Kléver, C-Soriguer Escofet, Mila, Carrera-Fernández, Maribel
Formato: Online
Lenguaje:eng
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Publicado: Iniversidad Autónoma de Baja California 2023
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363
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institution Ciencias Marinas
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language eng
spa
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author Mendoza-Nieto, Kléver
C-Soriguer Escofet, Mila
Carrera-Fernández, Maribel
spellingShingle Mendoza-Nieto, Kléver
C-Soriguer Escofet, Mila
Carrera-Fernández, Maribel
Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
author_facet Mendoza-Nieto, Kléver
C-Soriguer Escofet, Mila
Carrera-Fernández, Maribel
author_sort Mendoza-Nieto, Kléver
title Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
title_short Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
title_full Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
title_fullStr Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
title_full_unstemmed Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific
title_sort reproductive cycle and sexual maturity size of landed selene peruviana (perciformes: carangidae) on the coasts of the ecuadorian pacific
description The Peruvian moonfish (Selene peruviana) is an important fisheries resource that is landed in the main fishing harbors of Ecuador. At the local level, little information is available regarding the biology of this species, which hinders the development of management plans. The present study evaluates the reproductive characteristics of S. peruviana such as the size at sexual maturity and reproductive cycle. Specimens were obtained from artisanal and industrial catches from January 2017 to December 2018. The morphometric characteristics, sex, and maturity stage of 886 specimens were determined, and the gonadosomatic index (GSI), hepatosomatic index (HSI), and relative condition factor (Kn) were estimated. The length-weight relationship and length at sexual maturity (L50) were evaluated with an allometry equation and multi-model analyses, respectively. The mean capture size (total length, TL) was 23.62 cm for males and 22.97 cm for females. A sex ratio (M:F) of 0.70:1.00 (χ2 = 26.28, P < 0.05) was obtained. The allometric factor of the length-weight relationship for both sexes (b) was 2.63 (t = 12.16, P < 0.05), and the coefficient of determination (r2) was 0.89, which suggests that negative allometric growth was present. The L50 (TL) was estimated to be 22.61, 23.86, and 23.27 cm for males, females, and sexes combined, respectively. The monthly GSI, HSI, and Kn values were significantly different (K-W, P < 0.05) among study months. The maximum GSI values were observed in February and March, which constituted the period of highest reproductive activity. The HSI and Kn values exhibited similar trends. The size at sexual maturity was similar to the average catch size, which could indicate that S. peruviana is currently at the limit of its optimal catch size.
publisher Iniversidad Autónoma de Baja California
publishDate 2023
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363
_version_ 1792095485276717056
spelling oai:cienciasmarinas.com.mx:article-33632024-02-08T22:54:21Z Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific Ciclo reproductivo y talla de madurez sexual de Selene peruviana (Perciformes: Carangidae) desembarcadas en las costas del Pacífico ecuatoriano Mendoza-Nieto, Kléver C-Soriguer Escofet, Mila Carrera-Fernández, Maribel condition factor hepatosomatic index gonadosomatic index allometry Selene peruviana factor de condición índice hepatosomático índice gonadosomático alometría Selene peruviana The Peruvian moonfish (Selene peruviana) is an important fisheries resource that is landed in the main fishing harbors of Ecuador. At the local level, little information is available regarding the biology of this species, which hinders the development of management plans. The present study evaluates the reproductive characteristics of S. peruviana such as the size at sexual maturity and reproductive cycle. Specimens were obtained from artisanal and industrial catches from January 2017 to December 2018. The morphometric characteristics, sex, and maturity stage of 886 specimens were determined, and the gonadosomatic index (GSI), hepatosomatic index (HSI), and relative condition factor (Kn) were estimated. The length-weight relationship and length at sexual maturity (L50) were evaluated with an allometry equation and multi-model analyses, respectively. The mean capture size (total length, TL) was 23.62 cm for males and 22.97 cm for females. A sex ratio (M:F) of 0.70:1.00 (χ2 = 26.28, P < 0.05) was obtained. The allometric factor of the length-weight relationship for both sexes (b) was 2.63 (t = 12.16, P < 0.05), and the coefficient of determination (r2) was 0.89, which suggests that negative allometric growth was present. The L50 (TL) was estimated to be 22.61, 23.86, and 23.27 cm for males, females, and sexes combined, respectively. The monthly GSI, HSI, and Kn values were significantly different (K-W, P < 0.05) among study months. The maximum GSI values were observed in February and March, which constituted the period of highest reproductive activity. The HSI and Kn values exhibited similar trends. The size at sexual maturity was similar to the average catch size, which could indicate that S. peruviana is currently at the limit of its optimal catch size. El pez luna peruano, Selene peruviana, es un importante recurso desembarcado en las principales caletas pesqueras del Ecuador. A nivel local, existe poca información sobre la biología de esta especie, lo cual dificulta el desarrollo de planes de manejo. El presente estudio evalúa aspectos reproductivos de S. peruviana como la talla de madurez sexual y el ciclo reproductivo. Se obtuvieron muestras de capturas artesanales e industriales desde enero de 2017 hasta diciembre de 2018. Las características morfométricas, el sexo y la etapa de madurez de 886 especímenes fueron registrados y se estimó el índice gonadosomático (IGS), el índice hepatosomático (IHS) y el factor de condición relativo (Kn). La relación talla-peso y la talla de madurez sexual (L50) se evaluaron mediante la ecuación de alometría y análisis multimodelos, respectivamente. La talla media de captura (longitud total, LT) fue de 23.62 cm para los machos y 22.97 cm para las hembras. Se obtuvo una proporción de sexos (M:H) de 0.70:1.00 (χ2 = 26.28, P < 0.05). El factor alométrico de la relación longitud-peso para sexos combinados (b) fue 2.63 (t = 12.16, P < 0.05) y el coeficiente de determinación (r2) fue 0.89, lo que sugiere una relación alométrica negativa. La L50 (LT) se estimó en 22.61, 23.86 y 23.27 cm para machos, hembras y sexos combinados, respectivamente. Los valores mensuales de IGS, IHS y Kn mostraron diferencias significativas (K-W, P < 0.05) entre los meses de estudio. Los valores máximos de IGS se observaron durante febrero y marzo, siendo el periodo de mayor actividad reproductiva. Los índices de IHS y Kn mostraron tendencias similares. La talla de madurez sexual fue similar a la talla media de captura, lo que podría indicar que S. peruviana se encuentra en el límite de su talla óptima de captura. Iniversidad Autónoma de Baja California 2023-06-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363 10.7773/cm.y2023.3363 Ciencias Marinas; Vol. 49 (2023) Ciencias Marinas; Vol. 49 (2023) 2395-9053 0185-3880 eng spa https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363/420420731 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363/420420887 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3363/420420888 Copyright (c) 2023 Kléver Mendoza-Nieto, Mila C-Soriguer Escofet, Maribel Carrera-Fernández https://creativecommons.org/licenses/by/4.0

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