Siphonophora from the coast of Brazil (17ºS to 24ºS)

Abstract

• AbstTact: Tbis work is based on the analysis of 99 zooplankton samples collected during the Oceanographic Expedition "ESPÍRITo SAmO I", held along the east coast of Brazil, between Cabo Frio and Abrolhos Archipelago, an area characterized by the occurrence of coastal upwelling, from July to September 1984. Zooplankton was collected with vertical plankton net hauls of 250 Jlm mesh size in the upper 200 meters layer. A total of twenty one species of Siphonophora was observed, two of which were identified as being physonect and the other as ca1ycophorans. Specific diversity dose to the shore and at the neighborhood of the Vit6ria-Trindade Bank System, showed smaller values, in comparison with those in the oceanic regions. Factorial analysis was used in order to access the changes observed in the population of the eJeven most abundant species. The first two principal axes represented the influence of the nearshore -offshore gradient and the role of trophic interaction, accounted for 60% of the total variance of the data.

Species of Lensia (Cnidaria: Hydrozoa: Siphonophorae) from southeastern Brazilian waters

“…In South America, it occurs in the Pacific Ocean, in Chile, at 23°S off Antofagasta (Pagès et al 2001, PalMa & aPaBlaza 2004; and in the Atlantic Ocean, off French Guiana (lelouP 1934), and from Brazil to Argentina, from 0° to 38°S (alvariño 1968, 1971, cordeiro & MonTú 1991, nogueira & oliveira 1991, PugH 1999, MigoTTo et al 2002, silveira & Morandini 2011.…”

“…In South America, it occurs in the Pacific Ocean, in Chile, from 33°S (Valparaíso) to 55°S (Cape Horn) (lelouP 1932, PalMa 1973, 1994, PalMa & rosales 1997, PalMa et al 1999, 2007, ulloa et al 2000, PalMa & aravena 2001, villenas et al 2009); and in the Atlantic Ocean, off French Guiana (lelouP & HenTscHel 1935), from Brazil to Argentina, from 0° to 60°S (lelouP 1934, lelouP & HenTscHel 1935, alvariño 1968, 1971, 1981, nogueira & oliveira 1991, PugH 1999, MigoTTo et al 2002, silveira & Morandini 2011, and East of Falklands (Malvinas) Islands (Hardy & gunTHer 1935).…”

“…Totton, 1941 Figs. 4, 19 Eudoxia macra Totton, 1954: 118. (ToTTon 1941, alvariño 1968, 1971, 1981, cordeiro & MonTú 1991, nogueira & oliveira 1991, PugH 1999, MigoTTo et al 2002, silveira & Morandini 2011.…”

“…This species occurs in tropical and temperate regions of the Atlantic, Pacific, and Indian Oceans (alvariño 1971, daniel 1974). In South America, it occurs in the Pacific Ocean, in Chile, at 33°S off Valparaíso (PalMa & rosales 1995(PalMa & rosales , ulloa et al 2000, and from 47°S to 53°S in the fjords and channels of southern Chile (PalMa et al 1999); and in the Atlantic Ocean, from Brazil to Argentina, from 0° to 39°S (lelouP 1934, seguin 1965, alvariño 1971, 1981, nogueira & oliveira 1991, PugH 1999, MigoTTo et al 2002, silveira & Morandini 2011.…”

“…Brazil, Rio de Janeiro: Cabo Frio (collected at 5:45 a.m., 2721 m depth, 24°24.8'S-41°07.5'W), one specimen preserved in 4% formaldehyde, 05/09/76, collected by FINEP III campaign, station 1701 leg., LabGel (UFABC); Cabo Frio (collected at 1:00 a.m., 1120 m depth, 23°55.5'S-41°43.0'W), one specimen preserved in 4% formaldehyde, 05/10/76, collected by FINEP III campaign, station 1708 leg., LabGel (UFABC); Campos Basin (1200 m depth, 120 μm net, Upper Circumpolar Water), one specimen preserved in 4% formaldehyde, 03/17/09, collected by Habitats 12 campaign, station A10 leg., ZUEC CNI 59, Museu de Zoologia "Prof. Dr. Adão José Cardoso" (UNICAMP). (lelouP 1934, alvariño 1968, 1971, 1981, cordeiro & MonTú 1991, nogueira & oliveira 1991, PugH 1999, MigoTTo et al 2002, silveira & Morandini 2011.…”