The cockle Cerastoderma edule is one of the most common macrofauna species in Wadden Sea areas North Sea. Cockle population dynamics are influenced by various abiotic and biotic factors such as temperature, food availability, inter- intraspecific competition. Cockles play an important role web Sea, for instance, large shellfish-eating birds, oystercatchers eiders, use C. blue mussel Mytilus edu...

The common cockle (Cerastoderma edule) plays an important role in marine ecosystems and represents a valuable socioeconomic resource for coastal communities. In 2012, the beds from Rı́a de Arousa (Galicia, NW Spain) were seriously decimated by protozoan Marteilia cochillia responsible marteiliosis. We aimed to identify single nucleotide polymorphisms (SNP) markers potentially associated with res...

-1. Amino acid, keto acid and imino acid substrate specificities of octopine dehydrogenase (ODH) from seven marine invertebrate sources were investigated. 2. Three groups of ODH enzymes were identified determined, largely, by their use of L-lysine as an alternative amino acid substrate, 3. The broadly specific ODH from the sea anemone, Calliactes parasitica, utilized L-arginine and L-lysine at ...

The high degree of physical factors in intertidal estuarine ecosystem increases material processing between benthic and pelagic compartments. In these ecosystems, microphytobenthos resuspension is a major phenomenon since its contribution to higher trophic levels can be highly significant. Understanding the sediment and associated microphytobenthos resuspension and its fate in the water column ...

Habitat-modifying organisms that impact other organisms and local functioning are important in determining ecosystem resilience. However, it is often unclear how the outcome of interactions performed by key species varies depending on the spatial and temporal disturbance context which makes the prediction of disturbance-driven regime shifts difficult. We investigated the strength and generality...

Stable carbon and nitrogen isotope ratios were used to define the trophic base of the infaunal suspension-feeding bivalve Cerastoderma edule (L.) living on an intertidal muddy sandflat in Marennes-Oleron Bay, France. Suspended particulate organic matter (POM) collected from adjacent marine channels had a mean 6I3C value of -22 2 * 1.1 %O (n = 19). Benthic primary producers on Ronceles-Bains tid...

Selective predation can lead to natural selection in prey populations and may alleviate competition among surviving individuals. The processes of selection and competition can have substantial effects on prey population dynamics, but are rarely studied simultaneously. Moreover, field studies of predator-induced short-term selection pressures on prey populations are scarce. Here we report measur...