Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea
11 pages, 8 figures, 5 tables
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Marine Biological Association of the United Kingdom
2015-06
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| Subjects: | Deep sea, Reproductive biology, Oogenesis, Mediterranean Sea, Ceramaster grenadensis, |
| Online Access: | http://hdl.handle.net/10261/117455 |
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dig-icm-es-10261-1174552019-03-04T13:54:38Z Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea Mechó, Ariadna Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Company, Joan B. Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis 11 pages, 8 figures, 5 tables Ceramaster grenadensis is one of the most abundant bathyal seastars in the north-western Mediterranean Sea and also presents a wide geographic distribution in the Atlantic Ocean. As with other species in this genus, little information is available on the biology and reproductive strategy of C. grenadensis. In this context, we describe for the first time the reproductive cycle of this species from bathyal depths in the north-western Mediterranean Sea. Specimens (NA = 141) were collected seasonally from 194 benthic trawls (141 Otter Trawls and 53 Agassiz trawls) conducted during 10 cruises from October 2008 to April 2013. Open slope and canyon systems were sampled at depths between 900 and 2250 m. The population distribution of C. grenadensis showed a depth-related structure, with the smaller adult specimens and juveniles present at greater depths. Sex ratio was 2:1 females per male, constant among seasons and depths. Histological analyses of the gonads showed an asynchronous ovarian organization, with previtellogenic and vitellogenic oocytes throughout the year. These oogenesis patterns suggest a continuous reproduction. However, the Pyloric Caeca Index (PCI) decreased in summer while the Gonad Index (GI) increased in autumn in males, suggesting a higher spawning capacity in autumn. In both sexes, an increasing GI and PCI trend was observed with increasing depth. © Marine Biological Association of the United Kingdom 2015 This study was supported by three projects funded by the Spanish Government: PROMETEO (CTM2007-66316-C02/MAR), PROMARES – OASIS DEL MAR (Obra Social ‘la Caixa’) and DOSMARES (CTM2010-21810-C03-03). JA was a fellow of the Spanish Ramo´n y Cajal Programme. ERLL was partially funded by a Spanish Ramón y Cajal Programme Peer Reviewed 2015-07-02T07:22:36Z 2015-07-02T07:22:36Z 2015-06 2015-07-02T07:22:36Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1017/S0025315415000065 issn: 0025-3154 e-issn: 1469-7769 Journal of the Marine Biological Association of the UK 95(4): 805-815 (2015) http://hdl.handle.net/10261/117455 10.1017/S0025315415000065 http://dx.doi.org/10.1017/S0025315415000065 none Marine Biological Association of the United Kingdom |
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España |
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Bibliográfico |
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biblioteca |
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Europa del Sur |
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Biblioteca del ICM España |
| topic |
Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis |
| spellingShingle |
Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis Mechó, Ariadna Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Company, Joan B. Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| description |
11 pages, 8 figures, 5 tables |
| format |
artículo |
| topic_facet |
Deep sea Reproductive biology Oogenesis Mediterranean Sea Ceramaster grenadensis |
| author |
Mechó, Ariadna Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Company, Joan B. |
| author_facet |
Mechó, Ariadna Fernandez-Arcaya, U. Ramírez-Llodra, Eva Aguzzi, Jacopo Company, Joan B. |
| author_sort |
Mechó, Ariadna |
| title |
Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| title_short |
Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| title_full |
Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| title_fullStr |
Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| title_full_unstemmed |
Reproductive biology of the seastar Ceramaster grenadensis from the deep north-western Mediterranean Sea |
| title_sort |
reproductive biology of the seastar ceramaster grenadensis from the deep north-western mediterranean sea |
| publisher |
Marine Biological Association of the United Kingdom |
| publishDate |
2015-06 |
| url |
http://hdl.handle.net/10261/117455 |
| work_keys_str_mv |
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