Preprint volume - SIBM

Pre-print Volume –Posters
NECTON AND FISHERY COMMITEE
Longline
Trawl net
N. norvegicus
P. longirostris
P. martia
C. monstrosa
E. spinax
G. melastomus
Fig. 1 - Distribution of the fishing hauls recorded in SML fishery during the “Observer Program”.
Distribuzione delle cale di pesca registrate nella marineria di SML durante l’Observer
Program.
Fig. 2 - Catch composition from longline and trawl net recorded in SML fishery during the
“Observers’ Program”.
Composizione delle catture ottenute con palangaro e strascico nella marineria di SML
durante l’Observer Program.
Conclusions - Fishing operations of both longliner and trawlers occurred close or even
inside the northward limit of the coral area, indicating the occurrence of the “fishing
the line” phenomenon (Roberts and Hawkins, 2000). This occurs with the aim of
obtaining greater catches and larger specimens. Catch composition showed that, apart
from M. merluccius and P. blennoides, the two types of gears select different resources.
C. lucerna, fished with the greatest abundance by longline, was never collected inside
the coral area being distributed in shallower waters. Some other species, such as M.
merluccius, P. blennoides and H. dactylopterus, were collected with greater abundance
inside the coral bank than outside (D’Onghia et al., 2010). For some of them a spillover
effect, providing benefit to SML fishery, might occur. Although the present
results did not show any particular fishing pressure on this Mediterranean coral habitat,
a fishermen self-regulation appears to be fundamental even considering the new legal
category of “Deep-sea fisheries restricted area” created by the GFCM for the SML
deep-water coral bank.
References
D’ONGHIA G., MAIORANO P., SION L., GIOVE A., CAPEZZUTO F., CARLUCCI R., TURSI A.
(2010) - Effects of deep-water coral banks on the abundance and size structure of the megafauna
in the Mediterranean Sea. Deep-Sea Research II, 57: 397-411.
MASTROTOTARO F., D’ONGHIA G., CORRIERO G., MATARRESE A., MAIORANO P.,
PANETTA P., GHERARDI M., LONGO C., ROSSO A., SCIUTO F., SANFILIPPO R.,
GRAVILI C., BOERO F., TAVIANI M., TURSI A. (2010) - Biodiversity of the white coral
bank off Cape Santa Maria di Leuca (Mediterranean Sea): An update. Deep-Sea Research II, 57:
412-430.
ROBERTS C.M., HAWKINS J.P. (2000) - Fully-protected marine reserves: a guide. WWF
Endangered Seas Campaign, 1250 24 th Street, NW, Washington, DC 20037, USA and
Environment Department, University of York, York, YO10 5DD: 131 pp.
TAVIANI M., REMIA A., CORSELLI C., FREIWALD A., MALINVERNO E., MASTROTOTARO
F., SAVINI A., TURSI A. (2005) - First geo-marine survey of living cold-water Lophelia reefs
in the Ionian Sea (Mediterranean basin). Facies, 50: 409-417.
H. griseus
41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010
313
E. cirrhosa
I. coindetii
A. foliacea
A. antennatus
P. glauca
C. lucerna
C. conger
H. dactylopterus
H. mediterraneus
L. budegassa
M. merluccius
M. merluccius
P. bogaraveo
P. erythrinus
P. blennoides
P. blennoides
X. gladius
2 1 0 1 2 3 4
Longline (kg/100 hooks)
Trawl net (kg/h)