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
Abstract
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).
Keywords
competition
English Channel
intertidal
Mytilus edulis
non-indigenous species
competition English Channel intertidal Mytilus edulis non-indigenous species Mots-clés : compétition espèce non-indigène intertidal Manche Mytilus edulis
non-indigenous species Mots-clés : compétition
espèce non-indigène
Manche
Domains
Environmental Sciences
Fichier principal
Pezy_and_Raoux_in_press_Relationship_between_habitat_and_recruitment_of_Hemigrapsus_sanguineus_De_Haan_1835_and_Carcinus_maenas_Linnaeus_1758_on_Normandy_seashores_An_Aod_les_cahiers_naturalistes_de_l_Observatoire_marin.pdf (1.3 Mo)
Télécharger le fichier
| Origin | Files produced by the author(s) |
|---|