|Mysidacea (Crustacea) des campagnes Eumeli 2, 3 et 4 (1991-1992) au large de la Mauritanie = Mysidacea (Crustacea) from the Eumeli 2, 3 and 4 cruises (1991-1992) off the Mauritanian coast|
Ledoyer, M. (1998). Mysidacea (Crustacea) des campagnes Eumeli 2, 3 et 4 (1991-1992) au large de la Mauritanie = Mysidacea (Crustacea) from the Eumeli 2, 3 and 4 cruises (1991-1992) off the Mauritanian coast. Mar. Life 8(1-2): 25-27
In: Marine Life = Vie Marine. Institut Océanographique Paul Ricard: Marseille. ISSN 1168-3430, more
Four species of Mysidacea of the genus Gnathophausia have been collected during the Eumeli cruises off the Mauritanian coasts from bottoms of 2,000 and 3,100 m. The aim of the cruises Eumeli 2, 3 and 4 was to study oceanic fluxes in three areas of the tropical Eastern Atlantic north of the Cap Vert fold (18 to 21° N). One area presents a pattern of primary production of the eutrophic type (20° N - 18° W; 1,600 to 2,100 m) and is situated 60 miles off Cap Blanc, another a primary production pattern of the mesotrophic type (18° N - 20° W; 3,100 m) and is situated 270 miles from Cap Blanc and the last, of oligotrophic type (21° N - 31° W; 4, 500 m), is 900 miles from Cap Blanc. During these three cruises, where various sample collection techniques were used, only a few trawls (CPH: pole trawl) obtained a few rare specimens of Mysidacea all belonging to the genus Gnathophausia with a very extensive geographical range. In all, 16 trawls were carried out: 5 in the eutrophic zone, 2 of them positive, 7 in the mesotrophic zone, 3 of them positive, and 4 trawls in oligotropic zones, all negative. Using the other sampling techniques (coring, nets, automatic cages), no specimens of these mobile species were caught.