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| Toupoint, Nicolas; Gilmore-solomon, Lisandre; Bourque, Francois; Myrand, Bruno; Pernet, Fabrice; Olivier, Frederic; Tremblay, Rejean. |
| We considered Cushing's match/mismatch theory in a heterotrophic environment and hypothesized that settlement and recruitment success in blue mussel are higher when the food supply is rich in polyunsaturated and essential fatty acids (PUFA/EFA). To test this hypothesis, we monitored larval development as well as fatty acid composition in trophic resources during two successive reproductive seasons. The decoupling we found between the presence of competent larvae in the water column and settlement rates strongly suggests that metamorphosis is delayed until conditions are suitable. In both years, the major mussel settlement peak was synchronized with a phytoplanktonic pulse rich in EFA, consisting of a large autotrophic bloom in 2007 and a short but... |
| Tipo: Text |
Palavras-chave: Fatty acids; Larval supply; Match/mismatch; Mytilus edulis; Picoeukaryotes; Recruitment; Settlement rate; Trophic settlement trigger. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00098/20923/19676.pdf |
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| Zingone, Adriana; Sarno, Diana; Siano, Raffaele; Marino, Donato. |
| The distribution of summer phytoplankton across the Straits of Magellan (SOM) was studied with the aims of tracing differences among the distinct subregions of the area and contributing to the knowledge of its biodiversity. Samples collected at 25 stations were observed and counted in light microscopy. Selected samples were observed with transmission electron microscopy. The main unifying feature of the phytoplankton in the SOM was the high abundance and numerical dominance of small-sized (<10 μm) eukaryotic species, among which coccoid cells of <3 μm size were predominant (56.2 ± 30.6 of the total phytoplankton abundance). They mostly belonged to the prasinophyte Pycnococcus provasolii, which was abundant (0.8–6,834 cells × 103 ml−1) at all stations... |
| Tipo: Text |
Palavras-chave: Lennoxia faveolata; Periantarctic areas; Picoeukaryotes; Pycnococcus provasolii; Size structure. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00026/13722/10828.pdf |
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