By Letterio Guglielmo, Adrianna Ianora, M.G. Mazzocchi, G. Zagami, L. Guglielmo, N. Crescenti, J. Hure
The Antarctic represents the final of the world's nonetheless unexplored continents. on account that 1985, Italy has despatched 9 expeditions to this area, making it essentially the most scientifically lively international locations within the Antarctic. Italy has outfitted an everlasting base there and has started a scientific number of info and samples with the intention to give a contribution to our knowing of this unusual and very attention-grabbing continent. inside of this framework, Italy has additionally performed study in a sub-Antarctic sector of significant clinical curiosity, the Straits of Magellan. This sector, with its attribute oceanography and biota, represents a transition aspect among the faunal assemblages of temperate and antarctic seas. This atlas at the zooplankton is a vital contribution to the learn of the faunal assemblages of the quarter of the Straits and should expectantly be via others. The initiative is a part of an unlimited software introduced by means of the Italian Ministry of Universities and medical and Technological examine to advertise the exploration of Antarctic and sub-Antarctic seas, the purpose of that is to maintain one of many Earth's greatest and so much undisturbed average laboratories.
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Additional info for Atlas of Marine Zooplankton Straits of Magellan: Copepods
2, 12, 16, 22, 28, 36, 39. joint bearing 2 strong spines on inner margin. 00mm (20 specimens) Female. Cephalothorax elongated and ovate. Head convex on dorsal side and strongly curved in lateral view. Posterior corners of last thoracic somite with small acute apex. Al somewhat longer than last thoracic somite. Proportional lengths of cephalothorax and abdomen 65: 35; proportionallengths of abdominal somites and furca 41 :24: 16: 19 = 100. P5 uniramous, 3jointed, sometimes with defined 4th segment.
1A-G. Haloptilus acutifrons . Female: A whole animal dorsal view; B abdomen dorsal view; C pointed forehead with filiform rostrum ventral view; D pointed forehead with filiform rostrum lateral view; E mandibular palp; F mandibular blade; G P5 Fig. 2A-D. Haloptilus acutifrons. Female: A forehead ventral view; B abdomen lateral view; C P5 anterior view; D terminal part of mandibular blade. 1, I 11 9 13 15 - 50 - 100 -1 50 - 200 r---. E - 300 ::r: - 350 a. -400 0 - 450 I- w Depth range of occurrence =150·400 m Population core =300 • 400 m Temperature (T) =8,20 • 9,80 DC Oxygen =348,4· 437,21Jmol dm-3 Chi fluorescence (F) =0,04 • 0 3, 9 -250 -500 - 550 -600 T -650 F -700 0 10 10' 10) 10' 10' Fig.
20 figs. 1,3, 11, 16, 19,31, pI. 39 figs. 42, 43, 51, 52, 54. Heterorhabdus spinifrons Esterly, 1905: p. 183, fig. 37a,b; 1906: p. 77, pI. 14 fig. 93 Sars, 1925: p. 227, pI. 62 figs. 9-12-Brodskii, 1950: p. 351, fig. 246 - Grice, 1962: p. 222, pI. 24 figs. 10, 11 - Tanaka, 1964a: p. 13, fig. 179a-e - Mazza, 1965: p. 401, figs. 2c,f,g, 3-5, 6a - Arcos, 1975: p. 22, pI. 8 figs. 68-70. 59mm (9 specimens) Female. Large species, easily recognized for its prolonged forehead ending with a sharp spine.