Preprint volume - SIBM

More documents

Recommendations

Info

Pre-print Volume - Posters BENTHOS COMMITEE investigations on live specimens, also to exclude possible artefacts of sampling and preservation. This aspect besides demonstrated that crinoids behave not as simple support for feeding or mimetic refuge, but as a basibiont wherein facultative or more specialized symbiotic worms develops their own biological cycle. Fig. 1 - Subadyte pellucida: A) Colour pattern of the larger specimen. B) Egg mass attached to the upper notopodial surface (female, XII chaetiger). C) Magnification of the egg mass showing an oocyte nucleus (top arrow) and the attaching ‘peduncle’ (down arrow) (photo Andrea Potoschi). Subadyte pellucida: A) Colorazione caratteristica dell’esemplare più grande. B) Massa ovigera attaccata alla superficie superiore dei notopodi (femmina, XII setigero). C) Ingrandimento della massa ovigera che mostra un nucleo dell’ovocita (freccia in alto) ed il peduncolo d’attacco (freccia in basso). Conclusions – This is the first record of the association between Antedon mediterranea and Subadyte pellucida regarding to Italian seas. Moreover, this note aims to emphasize the presence of a reproductive couple of the polynoid S. pellucida on the same A. mediterranea host. The possible external brooding of (fertilized) eggs may constitute an adaptation for a more specialized ectosymbiotic life habit. References BAREL C.D.N., KRAMERS P.G.N. (1977) - A survey of the echinoderm associates of the North- East Atlantic area. Zoologische Verhandelingen, Leiden: 1-159. COPPARD S.E., CAMPBELL A.C. (2004) - Organisms associated with diadematid echinoids in Fiji. In: Heinzeller T., Nebelsick J.H. (eds), Echinoderms. London, Taylor and Francis Group: 171- 175. DALY J.M. (1972) - The maturation and breeding biology of Harmothoë imbricata (Polychaeta: polynoidae). Marine Biology, 12: 53-66. MARTIN D., BRITAYEV T.A. (1998) - Symbiotic polychaetes: review of known species. Oceanography and Marine Biology: an Annual Review, 36: 217-340. 41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010 277
Pre-print Volume - Posters BENTHOS COMMITEE M.C. MANGANO, E. PORPORATO, F. DE DOMENICO, A. PROFETA*, B. BUSALACCHI*, N. SPANÒ Dip.to di Biologia Animale ed Ecologia Marina, Università di Messina, Salita Sperone, 31 - 98166 Messina, Italia. mmangano@unime.com *Istituto Sperimentale Talassografico – CNR, Spianata San Ranieri, 86 - 98122 Messina, Italia. LEPTOMETRA PHALANGIUM (J. MÜLLER, 1841) FIELDS FROM THE SOUTHERN TYRRHENIAN SEA: PRELIMINARY DATA ON THE ASSOCIATED FAUNA FAUNA ASSOCIATA AI CAMPI A LEPTOMETRA PHALANGIUM (J. MÜLLER, 1841) NEL MAR TIRRENO MERIDIONALE: DATI PRELIMINARI Abstract – The crinoid Leptometra phalangium (Echinodermata: Crinoidea) is considered as an indicator of highly productive areas along the continental shelf capable to sustain large biomasses of benthopelagic fish. The presence of L. phalangium fields was recently recorded in the Southern Tyrrhenian Sea and the demersal associated fauna was identified. These results, according to other Authors, provide further evidence on the importance of this facies in structuring demersal communities and in enhancing the habitat heterogeneity, confirming the importance of L. phalangium field as essential fish habitat. Key-words: Leptometra phalangium, demersal fauna, southern Tyrrhenian Sea. Introduction – The suspension feeder crinoid Leptometra phalangium (J. Müller, 1841) represents a typical component of the Mediterranean benthic community of the continental shelf (DL, Pérès and Picard 1964), where can locally reach very high density (Kallianotis et al., 2000; Colloca et al., 2003). The aggregation zones of this species are considered able to sustain large biomasses of benthopelagic fish also playing an important role for their recruits (Colloca et al., 2004). In this note some information on demersal species associated with L. phalangium facies in the Southern Tyrrhenian Sea are reported. Materials and methods – Data were collected during a trawl survey carried out with CNR vessel “Dallaporta” in the Southern Tyrrhenian Sea in spring 2009. The hauls were performed using a trawl net having a 20 mm mesh size cod-end between 20 and 133 meters of depth from Brolo (ME) to Capo Raisigerbi (PA). All species collected were identified, counted and weighed. Data were elaborated in accordance with swept area of each haul to obtain the Density (n/km 2 ) and Biomass (kg/km 2 ) indices. Results – The presence of L. phalangium in facies was recorded in two localities: off Santo Stefano di Camastra (ME) from 128 to 133 meters, presenting a density of 1650 ind./Km 2 and off Finale di Pollina (PA) from 113 to 117 meters, with density of 2220 ind./km 2 . A total of 33 demersal species was collected: 23 Osteichthyes, 1 Chondrychthyes, 8 Mollusca and 1 Crustacea. The most abundant species (>3%) are reported in table 1. In this bottom we found typical demersal species already known for the L. phalangium fields from other areas of the Tyrrhenian Sea (Colloca et al., 2004; Reale et al., 2005). Conclusions – Although the L. phalangium bottoms are not rare in the Tyrrhenian Sea, this is the first official record of this facies along the Sicilian Tyrrhenian coasts. Our 41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010 278
Page 2 and 3:
41 st Congress of the Società Ital
Page 4 and 5:
Pre-print Volume ROGHI F., PARRAVIC
Page 6 and 7:
Pre-print Volume Topic 3 / Tema 3 I
Page 8 and 9:
Pre-print Volume CARLUCCI R., CAPEZ
Page 10 and 11:
Pre-print Volume PORPORATO E., MANG
Page 12 and 13:
Pre-print Volume SOCAL G., BERNARDI
Page 14 and 15:
Pre-print Volume - Opening keynote
Page 16 and 17:
Pre-print Volume - Opening keynote
Page 18 and 19:
Pre-print Volume - Introductory lec
Page 20 and 21:
Page 22 and 23:
Pre-print Volume -Lecture Topic 1:
Page 24 and 25:
Pre-print Volume -Lecture Topic 1:
Page 26 and 27:
Pre-print Volume - Invited presenta
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Pre-print Volume - Oral presentatio
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Pre-print Volume - Posters Topic 1:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Page 112 and 113:
Phytoplankton Groups kg C m -3 3.00
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Page 156 and 157:
Page 158 and 159:
Page 160 and 161:
Genoa Sestri Levante Pre-print Volu
Page 162 and 163:
Page 164 and 165:
Page 166 and 167:
Page 168 and 169:
Page 170 and 171:
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
Pre-print Volume -Invited presentat
Page 196 and 197:
Page 198 and 199:
Page 200 and 201:
Pre-print Volume -Oral presentation
Page 202 and 203:
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Page 210 and 211:
Page 212 and 213:
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Page 220 and 221:
Pre-print Volume -Posters Topic 4:
Page 222 and 223:
15 % Scyliorhinus canicula 12 GRUND
Page 224 and 225:
Page 226 and 227:
Page 228 and 229: Pre-print Volume -Posters Topic 4:
Page 240 and 241: Pre-print Volume - Posters AQUACULT
Page 258 and 259: Pre-print Volume BENTHOS COMMITEE B
Page 260 and 261: Pre-print Volume - Posters BENTHOS
Page 290 and 291: Pre-print Volume - Posters MANAGEME
Page 306 and 307: Pre-print Volume NECTON AND FISHERY
Page 308 and 309: Pre-print Volume -Posters NECTON AN
Page 328 and 329:
Pre-print Volume -Posters NECTON AN
Page 330 and 331:
Page 332 and 333:
Page 334 and 335:
Pre-print Volume - Posters PLANKTON
Page 336 and 337:
Page 338 and 339:
Page 340 and 341:
Page 342 and 343:
Page 344 and 345:
Page 346 and 347:
Pre-print Volume VARIOUS TOPICS VAR
Page 348 and 349:
Pre-print Volume - Posters VARIOUS
Page 350 and 351:
Page 352 and 353:
Page 354 and 355:
Page 356 and 357:
Page 358 and 359:
Page 360 and 361:
Page 362 and 363:
Page 364 and 365:
Page 366 and 367:
Page 368 and 369:
Page 370 and 371:
Castellano M.......................
Page 372 and 373:
Maravelias C.......................
Page 374:
Traversi I. .......................
show all

Preprint volume - SIBM

Create successful ePaper yourself

Delete template?

Save as template?