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First record of a rare deep-sea copepod, Gaussia intermedia Defaye, 1998 (Calanoida, Metridinidae), from the Atlantic Ocean

In: Crustaceana
Authors:
F. A. Alves-Júnior 1Museu de Oceanografia da Universidade Federal de Pernambuco (UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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A. Bertrand 2Institut de Recherche pour le Développement (IRD), UMR248 MARBEC IRD/IFEREMER/CNRS/UM2, Av. Jean Monnet, F-34203 Sète, France
3Departamento de Engenharia de Pesca (Depaq) da Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, Recife, PE, Brazil
4Departamento de Oceanografia da Universidade Federal de Pernambuco (Docean-UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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P. A. M. C. Melo 4Departamento de Oceanografia da Universidade Federal de Pernambuco (Docean-UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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É. P. Correia 1Museu de Oceanografia da Universidade Federal de Pernambuco (UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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L. G. P. Figueiredo 1Museu de Oceanografia da Universidade Federal de Pernambuco (UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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S. Neumann-Leitão 1Museu de Oceanografia da Universidade Federal de Pernambuco (UFPE), Av. Arquitetura, s/n, Cidade Universitária, Recife, PE, Brazil

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Copepod crustaceans of the genus Gaussia inhabit open ocean waters in epipelagic and bathypelagic zones from 0 to 5000 m. They show high-speed vertical migration and bioluminescent characteristics. In the Atlantic Ocean only the species G. asymmetrica Björnberg T. K. S. & Campaner, and G. princeps (Scott T., ) have been recorded previously. We report the first occurrence of the rarely recorded G. intermedia Defaye, for the Atlantic off Brazil. The specimens were collected around the Rocas Atoll (3°51′S 33°49′W), through the ABRAÇOS (Acoustic along the BRazilian COast) project on board R/V “Antea” in October 2015, using a micronekton net (mesh size 1 mm) and oblique hauls. Five specimens were collected at Rocas Atoll, in depths of 510-525 m. This finding expands the global distribution of G. intermedia and is the first occurrence in the Atlantic Ocean, updating the checklist of meso-bathypelagic copepods for Brazilian waters.

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