Elisabeth VarennesLes Transformations d'algues Seabiosis
Elisabeth Varennes
PhD
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6
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January 2010 - November 2015
Publications
Publications (6)
Benthivorous predators like sea ducks rely on abundant but low-quality food. Because they ingest whole blue mussels (Mytilus edulis L., 1758), including shells, they have to consume large quantities of food to maintain energy balance. Digestive processes may therefore limit energy assimilation in these predators, although selecting mussel types tha...
Molluscivore birds that forage on abundant but low-quality food have to ingest large quantities of food to achieve energy balance. Such a strategy is often associated with important digestive constraints limiting predator’s ingestion. Thus, these predators may use prey selection to ingest better-quality individuals among a generally low-quality pre...
Molluscivore birds that forage on abundant but low-quality food have to ingest large quantities of food to achieve energy balance. Such a strategy is often associated with important digestive constraints limiting predator’s ingestion. Thus, these predators may use prey selection to ingest better-quality individuals among a generally low-quality pre...
Despite its low energy density, the blue mussel Mytilus edulis is a regular prey of
various seaduck species. As a result, seaducks must ingest large quantities of mussels to meet
their energy requirements. In this study, we modeled the functional response curve for a large
avian molluscivore, the common eider Somateria mollissima, by measuring inta...
Shellfish aquaculture is a growing food-producing sector. The blue mussel Mytilus
edulis is the primary farmed shellfish and is also a main prey for various species of sea ducks. With
their large density of high-quality mussels, mussel farms attract these predators, and consequent
depredation by ducks represents a substantial economic loss among mu...
When engaged in behavioural games, animals can adjust their use of alternative tactics until groups reach stable equilibria. Recent theory on behavioural plasticity in games predicts that individuals should differ in their plasticity or responsiveness and hence in their degree of behavioural adjustment. Moreover, individuals are predicted to be con...
