Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)

Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)

It is well documented and accepted that the reproductive potential of a population is not only influenced by the abundance of spawners but also by their age, size, and condition. Most studies of maternal effects on the reproductive potential have focused on factors such as egg production and quality...

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Autores principales: Alonso-Fernández, A, Saborido-Rey, F
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2010
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1769
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institution Repositorio Institucional
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language eng
description It is well documented and accepted that the reproductive potential of a population is not only influenced by the abundance of spawners but also by their age, size, and condition. Most studies of maternal effects on the reproductive potential have focused on factors such as egg production and quality, and less attention has been paid to the maternal influence on the temporal variation of the reproductive cycle. The present study introduces and describes some possible sources of variation in the reproductive cycle of the pouting Trisopterus luscus in Galician coastal waters (northwestern Iberian Peninsula). The reproductive cycle of this species was adequately examined and defined, and seasonal variations in maternal characteristics, such as size and energy status (available energy reserves), were also studied. The reproductive cycle seems to be perfectly synchronized with changes in environmental variables that occur in the ecosystem, as reflected in the strong seasonality of the spawning period. The results showed a clear effect of size mainly on the duration of the spawning season, the spawning season of larger females beginning earlier and lasting longer than that of smaller individuals. The proportion of developing females is positively related to available energy reserves. On the other hand, energy reserves vary depending on the sexual cycle and are significantly negatively related to the proportion of females in spawning condition. The latter is an indicator of the dependence of the reproductive cycle of this species with previously stored energy reserves. 
format info:eu-repo/semantics/article
author Alonso-Fernández, A
Saborido-Rey, F
spellingShingle Alonso-Fernández, A
Saborido-Rey, F
Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
author_facet Alonso-Fernández, A
Saborido-Rey, F
author_sort Alonso-Fernández, A
title Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
title_short Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
title_full Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
title_fullStr Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
title_full_unstemmed Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae)
title_sort maternal influence on the variation of the reproductive cycle of trisopterus luscus (gadidae)
publisher Iniversidad Autónoma de Baja California
publishDate 2010
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1769
_version_ 1792609466444677120
spelling repositorioinstitucional-20.500.12930-74302023-05-09T14:30:48Z Maternal influence on the variation of the reproductive cycle of Trisopterus luscus (Gadidae) Influencia maternal en la variación del ciclo reproductivo de Trisopterus luscus (Gadidae) Alonso-Fernández, A Saborido-Rey, F It is well documented and accepted that the reproductive potential of a population is not only influenced by the abundance of spawners but also by their age, size, and condition. Most studies of maternal effects on the reproductive potential have focused on factors such as egg production and quality, and less attention has been paid to the maternal influence on the temporal variation of the reproductive cycle. The present study introduces and describes some possible sources of variation in the reproductive cycle of the pouting Trisopterus luscus in Galician coastal waters (northwestern Iberian Peninsula). The reproductive cycle of this species was adequately examined and defined, and seasonal variations in maternal characteristics, such as size and energy status (available energy reserves), were also studied. The reproductive cycle seems to be perfectly synchronized with changes in environmental variables that occur in the ecosystem, as reflected in the strong seasonality of the spawning period. The results showed a clear effect of size mainly on the duration of the spawning season, the spawning season of larger females beginning earlier and lasting longer than that of smaller individuals. The proportion of developing females is positively related to available energy reserves. On the other hand, energy reserves vary depending on the sexual cycle and are significantly negatively related to the proportion of females in spawning condition. The latter is an indicator of the dependence of the reproductive cycle of this species with previously stored energy reserves.  Está ampliamente documentado y aceptado que el potencial reproductivo de una población no está solo influenciado por la abundancia de reproductores sino también por la edad, talla y estado de condición de los mismos. La mayor parte de los estudios sobre el potencial reproductivo se han centrado en estudiar los efectos maternales sobre la producción de huevos, básicamente la fecundidad, mientras que su influencia en la variación temporal del ciclo reproductivo ha recibido menos atención. En el presente estudio se presentan y se describen algunas posibles fuentes de variación del ciclo reproductivo de la faneca (Trisopterus luscus) en aguas costeras de Galicia (Noroeste de la Península Ibérica). Se exploró y definió adecuadamente el ciclo reproductivo de esta especie y se investigaron a su vez las variaciones estacionales de características maternales como la talla y estatus energético (reservas energéticas disponibles). El ciclo reproductivo parece estar perfectamente sincronizado con los cambios en las variables ambientales que se producen en el ecosistema, reflejado en la fuerte estacionalidad del periodo de puesta. Los resultados mostraron un claro efecto de la talla principalmente en la duración de la época de puesta, las hembras más grandes comienzan la estación de puesta antes y la prolongan durante más tiempo que las de menor talla. Por otro lado las reservas energéticas varían en función del ciclo sexual y están negativamente relacionadas de forma significativa con la proporción de hembras en puesta. Esto último es indicador de la dependencia del ciclo reproductivo de esta especie con las reservas energéticas previamente almacenadas. Estos patrones nos dan idea de la importancia de la estructura de tallas de la población tanto sobre la producción total de huevos total como sobre el posterior reclutamiento del stock además de advertir de la dependencia del ciclo reproductivo de las reservas acumuladas con anterioridad. 2010-10-21 2021-06-03T03:55:17Z 2021-06-03T03:55:17Z 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/1769 10.7773/cm.v37i4B.1769 https://hdl.handle.net/20.500.12930/7430 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1769/1347 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 37 No. 4B (2011); 619-632 Ciencias Marinas; Vol. 37 Núm. 4B (2011); 619-632 2395-9053 0185-3880

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