Consulta: creatorFacets:"Tremblay, Pascale"
Registros recuperados: 2
Data/hora: 06/06/2024 14:06:18

Trophic dynamics of scleractinian corals: stable isotope evidence
Provedor de dados: 5
Autores: Tremblay, Pascale; Maguer, Jean-francois; Grover, Renaud; Ferrier-pages, Christine.
Reef-building corals form symbioses with dinoflagellates from the diverse genus Symbiodinium. This symbiotic association has developed adaptations to acquire and share nutrients, which are essential for its survival and growth in nutrient-poor tropical waters. The host is thus able to prey on a wide range of organic food sources (heterotrophic nutrition) whereas the symbionts acquire most of the inorganic nutrients (autotrophic nutrition). However, nutrient fluxes between the two partners remain unclear, especially concerning heterotrophically acquired carbon and nitrogen. We combined physiological measurements and pulse-chase isotopic labeling of heterotrophic carbon and nitrogen, as well as autotrophic carbon to track nutrient fluxes in two coral...
Tipo: Text
Palavras-chave: Autotrophy; Carbon; Heterotrophy; Irradiance; Isotopic labeling; Nitrogen; Stylophora pistillata; Symbiodinium; Symbiosis; Turbinaria reniformis.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00270/38145/73160.pdf

Heterotrophy promotes the re-establishment of photosynthate translocation in a symbiotic coral after heat stress
Provedor de dados: 5
Autores: Tremblay, Pascale; Gori, Andrea; Maguer, Jean-francois; Hoogenboom, Mia; Ferrier-pages, Christine.
Symbiotic scleractinian corals are particularly affected by climate change stress and respond by bleaching (losing their symbiotic dinoflagellate partners). Recently, the energetic status of corals is emerging as a particularly important factor that determines the corals' vulnerability to heat stress. However, detailed studies of coral energetic that trace the flow of carbon from symbionts to host are still sparse. The present study thus investigates the impact of heat stress on the nutritional interactions between dinoflagellates and coral Stylophora pistillata maintained under auto-and heterotrophy. First, we demonstrated that the percentage of autotrophic carbon retained in the symbionts was significantly higher during heat stress than under...
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00616/72835/72989.pdf