Héloïse MARTE

Individual and collective behaviors of the spider crab and the Canadian brown crab: combined use of accelerometry and acoustic telemetry to estimate and model the impact of maritime traffic anthropophony on the movements of two large crustaceans

The ENTENDRE project (Individual and Collective Behaviors of the Spider Crab and the Canadian Brown Crab) is a pioneering initiative that couples acoustic telemetry methods ('tracking') with modeling of collective movements, as well as passive and active acoustics, to estimate the impacts of anthropogenic underwater noise on the behaviors and migrations of large mobile marine crustaceans from temperate to subarctic zones (spider crabs, common crabs, etc.). It is set in the context of the growing development of maritime transport, whose associated noise is recognized as an emerging pollution. The project innovatively combines engineering tools used in coastal oceanography and animal behavioral sciences, as well as digital tools developed for the characterization and modeling of pedestrian trajectories. It will use inter-individual interaction sensors that have never been used in marine ecology before. Furthermore, the project is part of a framework of international research collaborations between France and Quebec.

Keywords: Impact of anthropophony, Acoustic telemetry, Accelerometry, Large crustaceans

Geographical areas covered by the study:

1. Sensitive metropolitan coastal and littoral ecosystems (Chausey Archipelago, Brest Harbor)
2. Overseas territories (Saint-Pierre and Miquelon Archipelago – Subarctic)
3. Gulf of Saint Lawrence.