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- Title
Are mussel beds a favourable habitat for settlement of Hemigrapsus sanguineus (De Haan, 1835)?
- Authors
Pezy, Jean-Philippe; Dauvin, Jean-Claude
- Abstract
Along the French coast of the English Channel, Hemigrapsus sanguineus (De Haan, 1835) is abundant under boulders on exposed shores that have high-energy hydrodynamic conditions in the intertidal zone. However, small individuals (< 6 mm) are rare in the muddy gravel sediments under boulders and the settlement habitat for post-larvae is largely unknown. This study explored whether mussel beds could represent a settlement zone for H. sanguineus. At the end of the summer of 2013, there were many post-larvae and small crabs in some mussel beds, with up to 528 individuals/m² . However, at one location, no juveniles of H. sanguineus were found in mussel bed habitat despite the presence of adults on the same shore. We conclude that mussel beds are an important habitat for the settlement of juvenile crabs.
- Subjects
HEMIGRAPSUS; INTRODUCED species; HYDRODYNAMICS; MUSSELS; HABITATS
- Publication
Aquatic Invasions, 2015, Vol 10, Issue 1, p51
- ISSN
1798-6540
- Publication type
Article
- DOI
10.3391/ai.2015.10.1.05