Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean
12 pages, 12 figures
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Format: | artículo biblioteca |
Language: | English |
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Consejo Superior de Investigaciones Científicas (España)
2008-12-30
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Subjects: | Merluccius merluccius, Cascading events, Spawning pattern, Fecundity, Western Mediterranean, Patrón reproductivo, Cascadas submarinas, Fecundidad, Mediterráneo occidental, |
Online Access: | http://hdl.handle.net/10261/9029 http://dx.doi.org/10.13039/501100000780 |
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dig-icm-es-10261-90292021-04-08T12:18:13Z Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean Patrón reproductivo y fecundidad de la merluza (Merluccius merluccius (Linnaeus, 1758)) en el Mediterráneo occidental Recasens, Laura Chiericoni, Velia Belcari, Paola European Commission Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental 12 pages, 12 figures [EN] The spawning cycle of the European hake (Merluccius merluccius, (Linnaeus, 1758)) was studied in two western Mediterranean areas, the Catalan Sea and the northern Tyrrhenian Sea, including observation of the monthly seasonal variation of the gonad maturity and the gonadosomatic index (GSI). The estimation of the maturity stages by GSI gave similar values in the two study areas: the spawning stage (IV) was easily distinguished from the other maturity stages and its range of variation showed a low overlap with stage III and no overlap with other stages. Although in both study areas active females were present during all the sampled months, the peak of reproductive activity was concentrated from February to May in the northern Tyrrhenian Sea but from August to December in the Catalan Sea, which was subjected to winter cascading events. Batch fecundity gave similar values in the Catalan and northern Tyrrhenian Seas: 204 and 202 eggs per gonad-free female gram, respectively. An asynchronous oocyte development is suggested for M. merluccius in the western Mediterranean [ES] Se ha estudiado el ciclo reproductivo de la merluza (Merluccius merluccius, (Linnaeus, 1758)) en dos áreas del Mediterráneo occidental, el Mar Catalán y el norte del Mar Tirreno, analizando la evolución mensual de la madurez en las gónadas y el índice gonadosomático (GSI). La estimación del estadio de madurez mediante el GSI dio resultados parecidos en ambas áreas de estudio: el estadio de puesta (IV) resultó fácil de distinguir de los otros estadios de madurez y su rango de variación mostró poca superposición con el estadio III y ninguna con los otros estadios. Aunque en ambas áreas de estudio se encontraron hembras activas durante todos los meses muestreados, el pico de actividad reproductiva se concentró entre febrero y mayo en el norte del Mar Tirreno, mientras que en el Mar Catalán es entre agosto y diciembre, esta última área sujeta en invierno a fenómenos de cascadas submarinas. La fecundidad relativa presentó valores similares en los mares Catalán y Tirreno norte: 204 huevos por gramo de hembras sin gónada y 202, respectivamente. Se sugiere un desarrollo ovocitario asíncrono para M. merluccius del Mediterráneo occidental This work was supported by the EU LLUCET Project (FAIR CT-97-3522) Peer reviewed 2008-12-06T20:50:11Z 2008-12-06T20:50:11Z 2008-12-30 artículo http://purl.org/coar/resource_type/c_6501 Scientia Marina 72(4): 721-732 (2008) 0214-8358 http://hdl.handle.net/10261/9029 10.3989/scimar.2008.72n4721 1886-8134 http://dx.doi.org/10.13039/501100000780 en https://doi.org/10.3989/scimar.2008.72n4721 open 1725705 bytes application/pdf Consejo Superior de Investigaciones Científicas (España) |
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Biblioteca del ICM España |
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English |
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Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental |
spellingShingle |
Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental Recasens, Laura Chiericoni, Velia Belcari, Paola Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
description |
12 pages, 12 figures |
author2 |
European Commission |
author_facet |
European Commission Recasens, Laura Chiericoni, Velia Belcari, Paola |
format |
artículo |
topic_facet |
Merluccius merluccius Cascading events Spawning pattern Fecundity Western Mediterranean Patrón reproductivo Cascadas submarinas Fecundidad Mediterráneo occidental |
author |
Recasens, Laura Chiericoni, Velia Belcari, Paola |
author_sort |
Recasens, Laura |
title |
Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
title_short |
Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
title_full |
Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
title_fullStr |
Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
title_full_unstemmed |
Spawning pattern and batch fecundity of the European hake (Merluccius merluccius (Linnaeus, 1758)) in the western Mediterranean |
title_sort |
spawning pattern and batch fecundity of the european hake (merluccius merluccius (linnaeus, 1758)) in the western mediterranean |
publisher |
Consejo Superior de Investigaciones Científicas (España) |
publishDate |
2008-12-30 |
url |
http://hdl.handle.net/10261/9029 http://dx.doi.org/10.13039/501100000780 |
work_keys_str_mv |
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