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vol.38 número2CONTRIBUCIÓN DE POLIQUETOS (ANNELIDA: POLYCHAETA) EN LA DIETA DE TRES ESPECIES DE NOTOTÉNIDOS (PERCIFORMES: NOTOTHENIOIDEI) EN LA REGIÓN DE MAGALLANESNUEVOS REGISTROS Y DISTRIBUCIÓN DE POLIQUETOS BENTÓNICOS SUBMAREALES DE FONDOS BLANDOS EN LA REGIÓN DE AISÉN, CHILE: FAMILIAS PARAONIDAE Y SPIONIDAE (ANNELIDA: POLYCHAETA) índice de autoresíndice de materiabúsqueda de artículos
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Anales del Instituto de la Patagonia

versión On-line ISSN 0718-686X

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BREMEC, Claudia; SOUTO, Valeria  y  GENZANO, Gabriel. POLYCHAETE ASSEMBLAGES IN SW ATLANTIC: RESULTS OF "SHINKAI MARU" IV, V, X AND XI (1978-1979) CRUISES IN PATAGONIA AND BUENOS AIRES. Anales Instituto Patagonia (Chile) [online]. 2010, vol.38, n.2, pp. 47-57. ISSN 0718-686X.  http://dx.doi.org/10.4067/S0718-686X2010000200005.

The aim of this paper is to study the polychaete composition from a wide area in the Argentinean shelf, between 36°S and 55°S, by means of samples collected from soft bottoms with Picard dredge, during the "Shinkai Maru" cruises developed in 1978-79. As the study area comprises both the Magellanic and Argentinean Biogeographic Provinces, we analyze if these results show differences in polychaete composition between both Provinces. A total of 816 individuals was studied; 29 families, represented by 70 taxa, were identified. The most frequent (36-57% sampling stations) and abundant families were Onuphidae, Nephtyidae and Ampharetidae, mainly represented by Kinbergonuphis dorsalis, Aglaopha-mus sp. and Ampharete kerguelensis, respectively. Cluster Analysis, SIMPER test and ANOSIM showed two different species assemblages in two well defined areas according to a nearly 60m depth boundary, in correspondence with the classical Magellanic and Argentinean Provinces.

Palabras clave : continental shelf,; Argentina; Magallanic Province.

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