Autors de l'ICTA

Projectes relationats

Últims articles publicats

2015 The unresolved controversy over nuclear power: A new approach from complexity theory[disponible en anglès]

2015 Triggering Community Conservation Through the Trade of Carbon Offsets: The Case of the Ejido Felipe Carrillo Puerto, Mexico[disponible en anglès]

2015 Boron isotope evidence for oceanic carbon dioxide leakage during the last deglaciation[disponible en anglès]

2015 Valuing nature, paying for ecosystem services and realizing social justice: A response to Matulis (2014)[disponible en anglès]

Characterization of the zooxanthellate and azooxanthellate morphotypes of the Mediterranean gorgonian Eunicella singularis

2012, Marine Biology - DOI DOI 10.1007/s00227-012-1928-3

Autors de l'ICTA:
Sergio Rossi

Tots els autors:
Andrea Gori, Lorenzo Bramanti, Pablo López-González, Jana N Thoma, Josep-Maria Gili, Jordi Grinyó, Vanessa Uceira, Sergio Rossi

Abstract
The gorgonian Eunicella singularis (Esper, 1794) is abundant on rocky bottoms at Cap de Creus (42"1804900 N; 003"1902300 E) in the western Mediterranean, and this study compared zooxanthellate colonies from relatively shallow depths with azooxanthellate colonies living at depths to 60 m. The goal was to determine the taxonomic status of a previously described subspecies, E. singularis aphyta. Sampling at 10-m intervals from 20 to 60 m using scuba or a remotely operated vehicle (ROV) in 2004 and 2010 allowed examination of colony shape, sclerite variability, genetic variability, and the presence/absence of zooxanthellae. Two morphotypes were identified: a shallow morphotype with candelabra-like colonies at 20–30 m has zooxanthellae, while a deep morphotype
with more ramified colonies at 40–60 m lacks symbionts. Sclerite differences among colonies were also identified along the depth gradient. The mitochondrial marker msh1 did not discriminate between the two morphotypes and indeed did not discriminate among several Mediterranean
species of Eunicella. Other genetic markers will be needed to firmly establish the taxonomic status of the two depth-related morphotypes.

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