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| Dubousquet, Vaimiti; Gros, Emmanuelle; Berteaux-lecellier, Veronique; Viguier, Bruno; Raharivelomanana, Phila; Bertrand, Cédric; Lecellier, Gael J.. |
| Temperature can modify membrane fluidity and thus affects cellular functions and physiological activities. This study examines lipid remodelling in the marine symbiotic organism, Tridacna maxima, during a time series of induced thermal stress, with an emphasis on the morphology of their symbiont Symbiodinium. First, we show that the French Polynesian giant clams harbour an important proportion of saturated fatty acids (SFA), which reflects their tropical location. Second, in contrast to most marine organisms, the total lipid content in giant clams remained constant under stress, though some changes in their composition were shown. Third, the stress-induced changes in fatty acid (FA) diversity were accompanied by an upregulation of genes involved in lipids... |
| Tipo: Text |
Palavras-chave: Thermal stress; Fatty acids; Differential expression; Antioxidant; Symbiodinium; Tridacna maxima. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00361/47195/79514.pdf |
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| Guibert, Isis; Bourdreux, Flavien; Bonnard, Isabelle; Pochon, Xavier; Dubousquet, Vaimiti; Raharivelomanana, Phila; Berteaux-lecellier, Véronique; Lecellier, Gael. |
| Dimethylsulfoniopropionate (DMSP) is a key compound in the marine sulfur cycle, and is produced in large quantities in coral reefs. In addition to Symbiodiniaceae, corals and associated bacteria have recently been shown to play a role in DMSP metabolism. Numerous ecological studies have focused on DMSP concentrations in corals, which led to the hypothesis that increases in DMSP levels might be a general response to stress. Here we used multiple species assemblages of three common Indo-Pacific holobionts, the scleractinian corals Pocillopora damicornis and Acropora cytherea, and the giant clam Tridacna maxima and examined the DMSP concentrations associated with each species within different assemblages and thermal conditions. Results showed that the... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00636/74777/74951.pdf |
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| Selmoni, Oliver; Lecellier, Gaël; Ainley, Lara; Collin, Antoine; Doucet, Raimana; Dubousquet, Vaimiti; Feremaito, Hudson; Ito Waia, Edouard; Kininmonth, Stuart; Magalon, Hélène; Malimali, Siola’a; Maugateau, Ateliana; Meibom, Anders; Mosese, Stephen; René-trouillefou, Malika; Satoh, Noriyuki; Van Oppen, Madeleine J. H.; Xozamé, André; Yékawene, Maxime; Joost, Stéphane; Berteaux-lecellier, Véronique. |
| Coral reefs are under threat and innovative management strategies are urgently required. However, discoveries from innovative fields of coral reef research are rarely transposed in practical conservation actions. This is mainly due to the difficulties in knowledge exchange between scientists and conservation stakeholders. The ManaCo consortium (http://manaco.ird.nc/) is an international network federating conservation stakeholders and researchers in a common effort to preserve the coral reefs. The focus is on using modern tools to build a bridge between indigenous knowledge and scientific innovation. ManaCo aims to orientate research toward relevant conservation needs and to facilitate the transposition of research into concrete management strategies. This... |
| Tipo: Text |
Palavras-chave: Coral reef; Conservation; Climate change; Reef management; Knowledge transfer. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75528/76433.pdf |
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