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Étude morphométrique basée sur les points homologues du crabe marbré Pachygrabsus marmoratus (Fabricius, 1787) au niveau de la côte de Mostaganem

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dc.contributor.author Ameur, Abederrahmane
dc.contributor.author Belkhira, Mohammed
dc.date.accessioned 2018-12-03T09:07:43Z
dc.date.available 2018-12-03T09:07:43Z
dc.date.issued 2018
dc.identifier.uri http://e-biblio.univ-mosta.dz/handle/123456789/4076
dc.description.abstract Our study is part of a Analysis based on landmark of the ‹‹marbled crab››Pachygrapsus marmoratus (Fabricus, 1787). We sampled 72 individuals from three stations: Salamander (SL), Sidi Medjdoub (SM) and Sidi Lakhdar (SK). Each individual was photographed in dorsal view for the purpose of performing the morphometric study, and then measured [Length (L),Width (R), Height (H) and Inter-Ocular Distance (Io)]. Other parameters such as the ratios H/L,L/R and Io/R were added together with the geometric mean (GM) to perform a biometric study. The PCA based on the L/R, H/L,Io/R and (GM) parameters showed us that the thicker the carapace is (H/L higher values) and the more it becomes rectangular (L/R low values). In addition, the correlation between (GM) and the two H/L and L/R ratios showed that there were several stages of carapace development involving individuals of different size. The CVA based on the coordinates of 27 landmark fixed on the back of the carapaces of P. marmoratus showed us that there was a morphometric dissmilarity between the populations of the three stations SL, SM and SK separating them into three distinct groups. In addition, there is a sexual dimorphism that may be related to the biological role of P. marmoratus females such as incubation of eggs. Finally, Ward's classification based on the coordinates of the landmark showed us that hydrodynamism could have an important role in the connectivity between different P. marmoratus populations of the coast Mostaganem. en_US
dc.language.iso fr en_US
dc.subject Pachygrapsus marmoratus en_US
dc.subject Points homologues en_US
dc.subject Côte de Mostaganem en_US
dc.subject ACP en_US
dc.subject ACV en_US
dc.subject Hydrodynamisme. en_US
dc.subject Mostaganem coast en_US
dc.subject hydrodynamism en_US
dc.subject landmark en_US
dc.title Étude morphométrique basée sur les points homologues du crabe marbré Pachygrabsus marmoratus (Fabricius, 1787) au niveau de la côte de Mostaganem en_US
dc.type Other en_US


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