The Arabian red shrimp (Aristeus alcocki Ramadan, 1938) is a deep-sea penaeoid shrimp that forms a major commercial fishery in the Indian coast. However, the spawning population of this species along the Indian coast is poorly known. To study this, stock structure of A. alcocki using truss morphometry was employed. A total of 1842 matured specimens were collected from five geographical locations (Tuticorin (SET), Chennai (SEC), Nagapattianam (SEN), Sakthikulangara (SWS), and Kalamuku (SWK)) along the Indian coast. Thirty-nine truss distances were extracted from each specimen and analyzed by multivariate methods (i.e., principal component analysis (PCA), discriminant functions (DF), and hierarchical cluster analysis). The results of the PCA indicated that the first two components cumulatively explained 70% (female: 72.1%; male: 71.5%) of the total morphometric variation. Stepwise DF analysis indicated that abdominal variables significantly discriminated the populations at different locations. The results clustered the five samples into a minimum of two groups: samples from SWK clustered ingroup I, whereas rest of the samples clustered in group II. Morphometric variation between the groups was significant for each sex. Significant differences between the groups may be attributed to geographical and environmental conditions, suggesting separate management strategies for resource sustainability. Key words: Aristeus alcocki, truss morphometry, PCA, deep sea shrimp, DF. Le gambon d'Arabie (Aristeus alcocki Ramadan, 1938) est une crevette peneide a la base d'une importante peche commerciale le long du littoral indien. La population reproductrice de cette espece le long du littoral indien demeure toutefois meconnue. Pour examiner cette question, la structure des stocks d'A. alcocki a ete etudiee en utilisant la morphometrie de treillis. Un total de 1842 specimens adultes a ete preleve de cinq lieux geographiques distincts (Tuticorin (SET), Chennai (SEC), Nagapattianam (SEN), Sakthikulangara (SWS) et Kalamuku (SWK)) le long du littoral indien. Trente-neuf distances de troncon de treillis ont ete mesurees pour chaque specimen et analysees par des methodes multivariees en utilisant l'analyse en composantes principales (ACP), les fonctions discriminantes (FD) et la classification hierarchique. Les resultats de l'ACP indiquent que les deux premieres composantes expliquent cumulativement 70 % (femelles : 72,1 %; males : 71,5 %) de la variation morphometrique totale. L'analyse discriminante pas-a-pas indique que les variables abdominales distinguent significativement les populations dans des lieux differents. Les resultats permettent de regrouper les cinq echantillons en un minimum de deux groupes : les echantillons de SWK forment le groupe I, alors que le reste des echantillons forment le groupe II. Les differences morphometriques entre les groupes sont significatives pour chaque sexe. Des differences significatives entre les groupes pourraient etre attribuables aux conditions geographiques et ambiantes, ce qui indiquerait que des strategies de gestion differentes pourraient etre necessaires pour assurer la perennite de la ressource. [Traduit par la Redaction] Mots-cles : Aristeus alcocki, morphometrie de treillis, ACP, crevettes d'eau profonde, FD.