MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Isopoda and Amphipoda (Peracarida) from the Mar del Plata Submarine Canyon: preliminary results
Autor/es:
DOTI B.L.; CHIESA, I. L.; ALBERICO, N. A.; ROCCATAGLIATA, D.
Lugar:
San José de Costa Rica
Reunión:
Encuentro; 2013 TCS Summer Meeting; 2013
Institución organizadora:
The Crustacean Society (TCS), Latin American Association of Carcinology (ALCARCINUS).
Resumen:
Peracarids are a common component of the benthic fauna, and contrary to other crustaceans, e.g., decapods, they are known to be extremely diverse in the deep sea. Most of the isopods and amphipods described from the Argentine Sea were collected in shallow waters; thus, the deep-sea fauna from this area still remain almost unknown. In order to improve our knowledge on this fauna, the isopods and amphipods from the Mar del Plata submarine canyon have been surveyed. This study area is situated in the northern part of the Argentine Continental Margin (ACM), on the eastern Buenos Aires Province. In August 2012, a total of  4 samples were taken on board the RV Puerto Deseado, using an epibenthic sledge equipped with a 1 mm mesh size, from 530 to 1500 m depth. Based on the study of a single sample (37º57.9?S, 54º31.9?W, 1144 m depth), the astonishing number of 33 species of isopods, many of them new to science, were identified. As it was expected, the Asellota shows the highest species richness among isopods, representing 67% of the isopod species recorded. The most diverse asellote families were Paramunnidae, Munnopsidae and Janiridae. Among the amphipods, from the 11 families identified, Phoxocephalidae and Lysianassidae were the most diverse ones.