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Georgios Tsounis

Alfred Wegener Institute for Polar and Marine Research

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Featured researches published by Georgios Tsounis.

Coral Reefs | 2016

Variation in lipid and free fatty acid content during spawning in two temperate octocorals with different reproductive strategies: surface versus internal brooder

Núria Viladrich; Lorenzo Bramanti; Georgios Tsounis; Blanca Chocarro; Angela Martínez-Quitana; Stefano Ambroso; Teresa Madurell; Sergio Rossi

AbstractThis study investigates the energetic investment during spawning of two Mediterranean gorgonians characterized by different reproductive strategies: Corallium rubrum (internal brooder) and Paramuricea clavata (surface brooder). Sexual products (number of oocytes and spermatic sacs) were quantified, and biochemical characteristics (lipid content and free fatty acid content and composition) were determined to investigate the parental energetic investment and demand in reproduction. Results suggested that the majority of the energetic cost was due to reproductive activity (i.e., gametogenesis and spawning). The two species exhibited different life history strategies, with P. clavata investing more energy in reproduction than C. rubrum. However, P. clavata is reproductively more sensitive to inter-annual changes in environmental conditions.

Oceanography and Marine Biology | 2010

The Exploitation and Conservation of Precious Corals

Georgios Tsounis; Sergio Rossi; Richard Grigg; Giovanni Santangelo; Lorenzo Bramanti; Josep Maria Gili

Marine Biology | 2006

Effects of spatial variability and colony size on the reproductive output and gonadal development cycle of the Mediterranean red coral (Corallium rubrum L.)

Georgios Tsounis; Sergio Rossi; Maria Aranguren; Josep Maria Gili; Wolf Arntz

Marine Biology | 2006

Population structure of an exploited benthic cnidarian: the case study of red coral (Corallium rubrum L.)

Georgios Tsounis; Sergio Rossi; Josep Maria Gili; Wolf Arntz

Marine Ecology Progress Series | 2011

Long-term growth rates of four Mediterranean cold water coral species maintained in aquaria

Covadonga Orejas; Christine Ferrier-Pagès; Stéphanie Reynaud; Andrea Gori; Eric Beraud; Georgios Tsounis; Denis Allemand; Josep Maria Gili

Marine Biology | 2006

Diet and seasonal prey capture rates in the Mediterranean red coral (Corallium rubrum L.)

Georgios Tsounis; Sergio Rossi; Jürgen Laudien; Lorenzo Bramanti; Neus Fernández; Josep Maria Gili; Wolf Arntz

Journal of Experimental Marine Biology and Ecology | 2012

Patterns of variation in recruitment and post-recruitment processes of the Mediterranean precious gorgonian coral Corallium rubrum

G. Santangelo; Lorenzo Bramanti; Sergio Rossi; Georgios Tsounis; Ilaria Vielmini; C. Lott; Josep Maria Gili

Marine Ecology Progress Series | 2012

Anthropogenic effects on reproductive effort and allocation of energy reserves in the Mediterranean octocoral Paramuricea clavata

Georgios Tsounis; Lucia Martinez; Lorenzo Bramanti; Núria Viladrich; Josep Maria Gili; Ángela Martinez; Sergio Rossi

Aquatic Biology | 2013

Sexual reproductive cycle of the epibiotic soft coral Alcyonium coralloides (Octocorallia, Alcyonacea)

Elena Quintanilla; Josep Maria Gili; Pablo J. López-González; Georgios Tsounis; Teresa Madurell; Ida Fiorillo; Sergio Rossi

Archive | 2010

Fishery Management of the Mediterranean Red Coral: A Call for a Paradigm Shift

Georgios Tsounis; Sergio Rossi; Josep Maria Gili

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Sergio Rossi

Spanish National Research Council

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Josep Maria Gili

Spanish National Research Council

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Lorenzo Bramanti

University of Paris

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Núria Viladrich

Autonomous University of Barcelona

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Teresa Madurell

Spanish National Research Council

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Wolf Arntz

Alfred Wegener Institute for Polar and Marine Research

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Ida Fiorillo

Spanish National Research Council

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Pablo J. López-González

University of Seville

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G. Santangelo

University of Pisa

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Ilaria Vielmini

University of Pisa

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