Autors de l'ICTA

Projectes relationats

Últims articles publicats

2015 Payments for ecosystem services in the tropics: a closer look at effectiveness and equity[disponible en anglès]

2015 Development of urban solar infrastructure to support low-carbon mobility[disponible en anglès]

2015 Land based climate change mitigation, land grabbing and conflict: understanding intersections and linkages, exploring actions for change[disponible en anglès]

2015 Nutritional condition of two coastal rocky fishes and the potential role of a marine protected area[disponible en anglès]

Reproductive cycle and trophic ecology in deep versus shallow populations of the Mediterranean gorgonian Eunicella singularis (Cap de Creus, northwestern Mediterranean Sea)

2012, Coral Reefs - número/volum 31(3) - ISSN: 0722-4028 - Pàgines 823-837 - DOI 10.1007/s00338-012-0904-1

Autors de l'ICTA:
Sergio Rossi, Nuria Viladrich Canudas

Tots els autors:
A. Gori, N. Viladrich, J-M. Gili, M. Kotta, C. Cucio, L. Magni, L. Bramanti, S. Rossi

Abstract
The annual gonad development of a shallow (20 m depth) population of the Mediterranean gorgonian Eunicella singularis was found to be closely synchronized with that of a deep (60 m depth) population, but differences were observed in the gonadal output, with the shallow population producing more and larger sexual products. Lipid content in the shallow population showed a marked seasonality, peaking during summer. In contrast, lipid content remained persistently lower in the deep population. Fatty acids as well as C/N composition were also seasonal in the shallow population and more constant in the deep one. The isotopic composition (d15N and d13C) of the shallow colonies was similar to values observed for passive suspension feeders with symbiotic algae, whereas the deep colonies exhibited values similar to those of aposymbiotic passive suspension feeders that primarily feed on microzooplankton and particulate organic matter. These results highlight the importance of considering the depth-related variability among populations in order to achieve a better understanding of the ecology of sessile benthic suspension feeders.

© 2008 ICTA - Universitat Autònoma de Barcelona - Tots els drets reservats