Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus
9 pages, 6 figures, 3 tables
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Cambridge University Press
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| Subjects: | Seasonal cycles, NW Mediterranean, Reproductive strategies, Size-frequency distribution, Symphurus, |
| Online Access: | http://hdl.handle.net/10261/123943 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 |
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dig-icm-es-10261-1239432019-03-26T11:21:24Z Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus Bustos-Salvador, F. Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Recasens, Laura Rotllant, Guiomar Company, Joan B. Ministerio de Ciencia e Innovación (España) European Commission Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus 9 pages, 6 figures, 3 tables The population structure and reproductive biology of deep-water continental margin Cynoglossidae is poorly known. Here, we focused on two highly abundant species of the upper slope of the NW Mediterranean Sea, Symphurus nigrescens and S. ligulatus. Megafaunal sampling of 37 hauls was conducted between April 2003 and May 2004 in the Blanes canyon and the adjacent open slope between 300-1500 m depth. The differential bathymetric distribution between the two species was surveyed by standardizing catch data per unit of swept surface and by pooling resulting densities by 100 m depth interval. Females of both species were classified into a five-stage maturity scale according to their external appearance and their gonads dissected for histological analysis. The analysis of the species' bathymetric distribution revealed a differential and only partial overlap. In both species, an increase in size with depth was observed coinciding with the dominance of females in deeper depth strata. The shallower species, S. nigrescens showed a marked spawning period with a peak in summer. In contrast, the deeper-living species, S. ligulatus, presented a longer spawning period ranging from spring to autumn. Moreover, histological examination demonstrated that the ovaries of both species had an asynchronous organization. Present results on spatial-temporal size frequency distribution, spawning temporality and oocyte size are discussed assuming interspecific competition and the different environmental conditions related to their bathymetric distribution. Copyright © Marine Biological Association of the United Kingdom 2015 This study was conducted within the RECS projects funded by the Spanish Science and Innovation Ministry CICYT (REN02/04556/C02/MAR to JBC) and the EU-FP7 project HERMIONE (Grant Agreement 226354) Peer Reviewed 2015-08 2015-10-27T13:02:03Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1017/S002531541500003X issn: 0025-3154 e-issn: 1469-7769 Journal of the Marine Biological Association of the UK 95(5): 1041-1049 (2015) http://hdl.handle.net/10261/123943 10.1017/S002531541500003X http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/226354 http://dx.doi.org/10.1017/S002531541500003X Sí none Cambridge University Press |
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Biblioteca del ICM España |
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Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus |
| spellingShingle |
Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus Bustos-Salvador, F. Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Recasens, Laura Rotllant, Guiomar Company, Joan B. Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| description |
9 pages, 6 figures, 3 tables |
| author2 |
Ministerio de Ciencia e Innovación (España) |
| author_facet |
Ministerio de Ciencia e Innovación (España) Bustos-Salvador, F. Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Recasens, Laura Rotllant, Guiomar Company, Joan B. |
| format |
artículo |
| topic_facet |
Seasonal cycles NW Mediterranean Reproductive strategies Size-frequency distribution Symphurus |
| author |
Bustos-Salvador, F. Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Recasens, Laura Rotllant, Guiomar Company, Joan B. |
| author_sort |
Bustos-Salvador, F. |
| title |
Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| title_short |
Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| title_full |
Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| title_fullStr |
Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| title_full_unstemmed |
Reproductive biology of NW Mediterranean tonguefish Symphurus nigrescens and Symphurus ligulatus |
| title_sort |
reproductive biology of nw mediterranean tonguefish symphurus nigrescens and symphurus ligulatus |
| publisher |
Cambridge University Press |
| url |
http://hdl.handle.net/10261/123943 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 |
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