Relationship between habitat and recruitment of the Asian shore crab Hemigrapsus sanguineus (De Haan, 1835) and the indigenous shore crab Carcinus maenas (Linnaeus, 1758) on Normandy seashores - Normandie Université Accéder directement au contenu
Article Dans Une Revue An Aod - Les cahiers naturalistes de l’Observatoire marin Année : 2023

Relationship between habitat and recruitment of the Asian shore crab Hemigrapsus sanguineus (De Haan, 1835) and the indigenous shore crab Carcinus maenas (Linnaeus, 1758) on Normandy seashores

Relation habitat-recrutement du crabe sanguin Hemigrapsus sanguineus (De Haan, 1835) et du crabe vert Carcinus maenas (Linnaeus, 1758) le long des côtes Normandes

Résumé

On the French coast, Hemigrapsus sanguineus (H.s) was observed for the first time in 1999 in Le Havre. Since then, H. sanguineus adult population has been spreading along the French coast of the English Channel and have strong interaction with the indigenous crab Carcinus maenas (C.m). Juveniles populations of H. sanguineus and C. maenas are preferentially present in mussel beds (279 ± 108 ind·m−2 for H.s and 238 ± 77 ind·m−2 for C.m) and barnacles (63 ± 16 ind·m−2 for H.s and 28 ± 9 ind·m−2 for C.m). On the contrary, within macroalgae dominated habitats, only juveniles of C. maenas were observed (30 ± 11 ind·m−2).
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Dates et versions

hal-04018503 , version 1 (07-03-2023)

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  • HAL Id : hal-04018503 , version 1

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Jean-Philippe Pezy, Aurore Raoux. Relationship between habitat and recruitment of the Asian shore crab Hemigrapsus sanguineus (De Haan, 1835) and the indigenous shore crab Carcinus maenas (Linnaeus, 1758) on Normandy seashores. An Aod - Les cahiers naturalistes de l’Observatoire marin, 2023. ⟨hal-04018503⟩
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