Preprint volume - SIBM

Pre-print Volume - Posters
BENTHOS COMMITEE
results are not comparable with other L. phalangium fields, from other areas, in term of
occurrence, density and extension, nevertheless the associated demersal species seem
to be very similar. These preliminary results provide further evidence on the
importance of this facies in structuring demersal communities and in enhancing the
habitat heterogeneity (Gili and Coma, 1998; Colloca et al., 2004). Moreover, the
knowledge about an essential fish habitat, as L. phalangium field, should be considered
priority in fisheries management of the Southern Tyrrhenian Sea.
Tab. 1 – List of most frequent species and their density and biomass values in the 3C and 31C
stations.
Lista delle specie più frequenti e loro valori di densità e biomassa nelle stazioni 3C e 31C.
3 C 31 C
SPECIES kg/km 2 n/km 2 kg/km 2 n/km 2
Aspitrigla cuculus (Linnaeus, 1758) 0,25 33,33 3,20 60,00
Boops boops (Linnaeus, 1758) 8,67 100,00 1,20 20,00
Cepola macrophthalma (Linnaeus, 1758) 1,00 50,00 0,20 20,00
Lepidotrigla cavillone (Lacepède, 1801) 0,17 16,67 24,80 2140,00
Lophius budegassa (Spinola, 1807) 0,00 0,00 10,00 60,00
Macroramphosus scolopax (Linnaeus, 1758) 0,17 83,33 0,00 0,00
Merluccius merluccius (Linnaeus, 1758) 33,33 1766,67 12,40 440,00
Mullus barbatus (Linnaeus, 1758) 3,33 83,33 43,20 760,00
Pagellus acarne (Risso, 1826) 8,00 116,67 0,00 0,00
Pagellus erythrinus (Linnaeus, 1758) 10,83 50,00 0,00 0,00
Phycis blennoides (Brünnich, 1768) 2,67 33,33 0,80 20,00
Serranus hepatus (Linnaeus, 1766) 0,17 33,33 0,00 0,00
Spicara flexuosa (Rafinesque, 1810) 12,67 283,33 14,80 180,00
Spicara smaris (Linnaeus, 1758) 0,00 0,00 3,20 100,00
Trachurus trachurus (Linnaeus, 1758) 63,33 1550,00 19,00 2100,00
Zeus faber (Linnaeus, 1758) 0,33 16,67 0,00 0,00
Parapenaeus longirostris (Lucas, 1846) 0,25 50,00 16,00 40,00
Alloteuthis media (Linnaeus, 1758) 15,00 1133,33 7,60 800,00
Alloteuthis subulata (Lamarck, 1798) 0,08 33,33 0,40 160,00
Eledone cirrhosa (Lamarck, 1798) 0,42 100,00 0,00 0,00
Illex coindetii (Verany, 1839) 31,67 116,67 2,40 20,00
Scaeurgus unicirrhus (Orbigny, 1840) 0,00 0,00 0,40 40,00
Sepia elegans (Blainville, 1827) 0,50 66,67 0,40 100,00
Sepia orbignyana (Férussac, 1826) 0,25 66,67 0,00 0,00
References
COLLOCA F., CARDINALE M., BELLUSCIO A., ARDIZZONE G. (2003) - Pattern of distribution
and diversity of demersal assemblages in the central Mediterranean Sea. Estuar. Coast. Shelf
Sci., 56: 469-480.
COLLOCA F., CARPENTERI P., BALESTRI E., ARDIZZONE G.D. (2004) - A critical habitat for
Mediterranean fish resources: shelf-break areas with Leptometra phalangium (Echinodermata:
Crinoidea). Mar. Biol., 145: 1129-1142.
GILI J.M., COMA R. (1998) - Benthic suspension feeders: their paramount role in littoral marine
food webs. Trends Ecol. Evol., 13: 316–321.
KALLIANOTIS A., SOPHRONIDIS K., VIDORIS P., TSELEPIDES A. (2000) - Demersal fish and
megafaunal assemblages on the Cretan continental shelf and slope (NE Mediterranean): seasonal
variation in species density, biomass and diversity. Progr. Oceanog., 46: 429-455.
PÉRÈS J.M., PICARD J. (1964) - Nouveau manuel de bionomie benthique de la mer Méditerranée.
Recl. Trav. Stn. Mar. Endoume, 31: 1-137.
REALE B., SARTOR P., LIGAS A., VIVA C., BERTOLINI D., DE RANIERI S., BELCARI P.
(2005) – Demersal species assemblage on the Leptometra phalangium (J. Müller, 1841)
(Echinodermata; Crinoidea) bottoms of the Northern Tyrrhenian Sea. Biol. Mar. Mediterr., 12
(1): 571-574.
41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010
279